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blabla/PATSTAT/CPC_data/CPCSchemeXML202302/cpc-scheme-G01J.xml

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<?xml version="1.0" encoding="UTF-8"?>
<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="G01J" definition-exists="true" date-revised="2018-08-01" status="published"><classification-symbol>G01J</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT</text></title-part><title-part><text>COLORIMETRY</text></title-part><title-part><text>RADIATION PYROMETRY </text><reference><text>light sources <class-ref scheme="cpc">F21</class-ref>, <class-ref scheme="cpc">H01J</class-ref>, <class-ref scheme="cpc">H01K</class-ref>, <class-ref scheme="cpc">H05B</class-ref>; investigating properties of materials by optical means <class-ref scheme="cpc">G01N</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>This subclass <u>covers</u> the detection of the presence or absence of infra-red, visible, or ultra-violet light, not otherwise provided for.</note-paragraph><note-paragraph>Attention is drawn to the Notes following the title of class <class-ref scheme="cpc">G01</class-ref>.</note-paragraph></note><note type="warning"><note-paragraph>In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="G01J1/00" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/00</classification-symbol>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/0238" definition-exists="false" ipc-concordant="G01J1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0238</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>making use of sensor-related data, e.g. for identification of sensor or optical parts</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J1/0276" definition-exists="false" ipc-concordant="G01J1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/0276</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Protection</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/0285" definition-exists="false" ipc-concordant="G01J1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/0285</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>against laser damage</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/029" definition-exists="false" ipc-concordant="G01J1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/029</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Multi-channel photometry</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/0295" definition-exists="false" ipc-concordant="G01J1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0295</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Constructional arrangements for removing other types of optical noise or for performing calibration</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/04" definition-exists="true" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>G01J1/04</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Optical or mechanical part </text><CPC-specific-text><text>supplementary adjustable parts</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/0403" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0403</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mechanical elements; Supports for optical elements; Scanning arrangements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/0407" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0407</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0411" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0411</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using focussing or collimating elements, i.e. lenses or mirrors; Aberration correction</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0414" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0414</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using plane or convex mirrors, parallel phase plates, or plane beam-splitters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0418" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0418</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using attenuators</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0422" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0422</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using light concentrators, collectors or condensers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0425" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0425</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using optical fibers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0429" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0429</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using polarisation elements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0433" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0433</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using notch filters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0437" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0437</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using masks, aperture plates, spatial light modulators, spatial filters, e.g. reflective filters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/044" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/044</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using shutters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0444" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0444</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using means for replacing an element by another, e.g. for replacing a filter or grating</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0448" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0448</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Adjustable, e.g. focussing</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0451" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0451</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using means for illuminating a slit efficiently, e.g. entrance slit of a photometer or entrance face of fiber</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0455" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0455</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having a throughhole enabling the optical element to fulfil an additional optical function, e.g. a mirror or grating having a through-hole for a light collecting or light injecting optical fibre</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0459" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0459</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using an optical amplifier of light or coatings to improve optical coupling</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0462" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0462</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Slit arrangements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0466" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0466</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a sighting port</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/047" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using extension/expansion of solids or fluids, change of resonant frequency or extinction effect</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0474" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0474</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Diffusers </text><reference><text>cavities <class-ref scheme="cpc">G01J2001/0481</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0477" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0477</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Prisms, wedges</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/0481" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/0481</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Preset integrating sphere or cavity</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/0485" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/0485</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cosinus correcting or purposely modifying the angular response of a light sensor</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/0488" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0488</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with spectral filtering</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/0492" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/0492</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using at least two different filters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/0496" definition-exists="false" ipc-concordant="G01J1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/0496</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using fiber Bragg gratings</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/06" definition-exists="true" ipc-concordant="G01J1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Restricting the angle of incident light</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/061" definition-exists="false" ipc-concordant="G01J1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/061</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Baffles</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/062" definition-exists="false" ipc-concordant="G01J1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by fibre-optic packed bundle</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/063" definition-exists="false" ipc-concordant="G01J1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with selectable field of view</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/065" definition-exists="false" ipc-concordant="G01J1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by changing elements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/066" definition-exists="false" ipc-concordant="G01J1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with an aiming optical device</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/067" definition-exists="false" ipc-concordant="G01J1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/067</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for angle scan</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/068" definition-exists="false" ipc-concordant="G01J1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/068</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by diaphragm or the like</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/08" definition-exists="true" ipc-concordant="G01J1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements of light sources specially adapted for photometry </text><CPC-specific-text><text>standard sources, also using luminescent or radioactive material</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/083" definition-exists="false" ipc-concordant="G01J1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/083</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Testing response of detector</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/086" definition-exists="false" ipc-concordant="G01J1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/086</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Calibrating drift correction</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J1/10" definition-exists="false" ipc-concordant="G01J1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by comparison with reference light or electric value </text><CPC-specific-text><text>provisionally void</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/12" definition-exists="false" ipc-concordant="G01J1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using wholly visual means </text><reference><text><class-ref scheme="cpc">G01J1/20</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/122" definition-exists="false" ipc-concordant="G01J1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/122</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Visual exposure meters for determining the exposure time in photographical recording or reproducing</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/124" definition-exists="false" ipc-concordant="G01J1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/124</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>based on the comparison of the intensity of measured light with a comparison source or comparison illuminated surface</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G01J1/126" definition-exists="false" ipc-concordant="G01J1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for enlarging apparatus</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G01J1/128" definition-exists="false" ipc-concordant="G01J1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/128</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for copy- or printing apparatus</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/14" definition-exists="false" ipc-concordant="G01J1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using comparison with a surface of graded brightness, </text><CPC-specific-text><reference><text>e.g. for view taking; for analytical applications <class-ref scheme="cpc">G01N21/293</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/16" definition-exists="true" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using electric radiation detectors </text><reference><text><class-ref scheme="cpc">G01J1/20</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/1605" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1605</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Null method</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/161" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/161</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ratio method, i.e. Im/Ir</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1615" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1615</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Computing a difference/sum ratio, i.e. (Im - Ir) / (Im + Ir)</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1621" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1621</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Comparing a duty ratio of pulses</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/1626" definition-exists="true" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/1626</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements with two photodetectors, the signals of which are compared</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1631" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1631</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Bridge circuit</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1636" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1636</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>one detector directly monitoring the source, e.g. also impulse time controlling</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/1642" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1642</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and acting on the detecting circuit</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1647" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1647</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>one signal maintained constant</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1652" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1652</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>one detector being transparent before the other one</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1657" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1657</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>one signal being spectrally modified, e.g. for UV</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1663" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1663</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>two detectors of different sensitivity</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/1668" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1668</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the measuring signal itself varying in time, e.g. periodic, for example blood pulsation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/1673" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1673</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using a reference sample</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/1678" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1678</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Comparing time separated signals, i.e. chopped</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1684" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1684</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and selecting also a DC level from the signal</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1689" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1689</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>one separated signal being processed differently</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/1694" definition-exists="false" ipc-concordant="G01J1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/1694</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a signal from on/off switched light source</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/18" definition-exists="true" ipc-concordant="G01J1/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using comparison with a reference electric value</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/182" definition-exists="false" ipc-concordant="G01J1/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/182</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with SH sample and hold circuits</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/184" definition-exists="false" ipc-concordant="G01J1/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/184</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>on a succession of signals</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/186" definition-exists="false" ipc-concordant="G01J1/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/186</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Comparison or correction from an electric source within the processing circuit</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/188" definition-exists="false" ipc-concordant="G01J1/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/188</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>on pulse train</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/20" definition-exists="false" ipc-concordant="G01J1/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/22" definition-exists="true" ipc-concordant="G01J1/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a variable element in the light-path, e.g. filter, polarising means </text><reference><text><class-ref scheme="cpc">G01J1/34</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/24" definition-exists="false" ipc-concordant="G01J1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using electric radiation detectors</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/242" definition-exists="false" ipc-concordant="G01J1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/242</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Filter wheel, i.e. absorption filter series graduated</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/245" definition-exists="false" ipc-concordant="G01J1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/245</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with two or more separate attenuated steps</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/247" definition-exists="false" ipc-concordant="G01J1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/247</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of spectral wedge type</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G01J1/26" definition-exists="true" ipc-concordant="G01J1/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adapted for automatic variation of the measured or reference value </text><reference><text>regulation of light intensity <class-ref scheme="cpc">G05D25/00</class-ref></text></reference></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/28" definition-exists="false" ipc-concordant="G01J1/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using variation of intensity or distance of source </text><reference><text><class-ref scheme="cpc">G01J1/34</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/30" definition-exists="false" ipc-concordant="G01J1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using electric radiation detectors</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G01J1/32" definition-exists="true" ipc-concordant="G01J1/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>adapted for automatic variation of the measured or reference value </text><reference><text>regulation of light intensity <class-ref scheme="cpc">G05D25/00</class-ref></text></reference></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/34" definition-exists="true" ipc-concordant="G01J1/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using separate light paths used alternately or sequentially, e.g. flicker</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J1/36" definition-exists="true" ipc-concordant="G01J1/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using electric radiation detectors</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/363" definition-exists="false" ipc-concordant="G01J1/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/363</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Chopper stabilisation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/366" definition-exists="false" ipc-concordant="G01J1/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/366</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Balancing two paths</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J1/38" definition-exists="false" ipc-concordant="G01J1/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using wholly visual means </text><reference><text><class-ref scheme="cpc">G01J1/10</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/40" definition-exists="false" ipc-concordant="G01J1/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using limit or visibility or extinction effect</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J1/42" definition-exists="true" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using electric radiation detectors </text><reference><text>optical or mechanical part <class-ref scheme="cpc">G01J1/04</class-ref>; by comparison with a reference light or electric value <class-ref scheme="cpc">G01J1/10</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/4204" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/4204</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with determination of ambient light </text><reference><text>solar light <class-ref scheme="cpc">G01J2001/4266</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/4209" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/4209</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Photoelectric exposure meters for determining the exposure time in recording or reproducing</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/4214" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/4214</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially adapted for view-taking apparatus</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/4219" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/4219</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially adapted for enlargers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/4223" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/4223</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>specially adapted for copy - or printing apparatus</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/4228" definition-exists="true" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/4228</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>arrangements with two or more detectors, e.g. for sensitivity compensation</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/4233" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4233</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with selection of detector</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J1/4238" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4238</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pulsed light</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J1/4242" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4242</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Modulated light, e.g. for synchronizing source and detector circuit</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J1/4247" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4247</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for testing lamps or other light sources</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/4252" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4252</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for testing LED&apos;s</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/4257" definition-exists="true" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/4257</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam </text><reference><text>monitoring arrangements for lasers in general <class-ref scheme="cpc">H01S3/0014</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/4261" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4261</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Scan through beam in order to obtain a cross-sectional profile of the beam</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J1/4266" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4266</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for measuring solar light</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/4271" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4271</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pyrrheliometer</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/4276" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4276</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Solar energy integrator over time</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/428" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/428</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for sunlight scattered by atmosphere</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/4285" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4285</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Pyranometer, i.e. integrating over space</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/429" definition-exists="true" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/429</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>applied to measurement of ultraviolet light </text><reference><text>using counting tubes <class-ref scheme="cpc">G01T</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J1/4295" definition-exists="false" ipc-concordant="G01J1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4295</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using a physical effect not covered by other subgroups of <class-ref scheme="cpc">G01J1/42</class-ref></text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/44" definition-exists="true" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Electric circuits </text><CPC-specific-text><reference><text>for command of an exposure part <class-ref scheme="cpc">G03B7/02</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/4406" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4406</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Plural ranges in circuit, e.g. switchable ranges; Adjusting sensitivity selecting gain values</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/4413" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4413</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Type</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/442" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/442</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Single-photon detection or photon counting</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/4426" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4426</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with intensity to frequency or voltage to frequency conversion [IFC or VFC]</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J1/4446" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4446</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Type of detector</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/4453" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4453</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>PMT</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/446" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/446</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Photodiode</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J1/4466" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4466</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Avalanche</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/4473" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4473</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Phototransistor</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/448" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/448</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Array [CCD]</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/4486" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4486</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Streak tube</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J1/4493" definition-exists="false" ipc-concordant="G01J1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2001/4493</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with image intensifyer tube [IIT]</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J1/46" definition-exists="true" ipc-concordant="G01J1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using a capacitor</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J1/48" definition-exists="false" ipc-concordant="G01J1/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/48</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using chemical effects</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/50" definition-exists="true" ipc-concordant="G01J1/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using change in colour of an indicator, e.g. actinometer</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/52" definition-exists="false" ipc-concordant="G01J1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using photographic effects</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J1/54" definition-exists="false" ipc-concordant="G01J1/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by observing photo-reactions between gases</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J1/56" definition-exists="false" ipc-concordant="G01J1/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using radiation pressure or radiometer effect</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J1/58" definition-exists="true" ipc-concordant="G01J1/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/58</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using luminescence generated by light</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J1/60" definition-exists="false" ipc-concordant="G01J1/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J1/60</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by measuring the pupil of the eye</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="G01J3/00" definition-exists="true" ipc-concordant="G01J3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>G01J3/00</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Spectrometry</text></title-part><title-part><text>Spectrophotometry</text></title-part><title-part><text>Monochromators</text></title-part><title-part><text>Measuring colours</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J3/003" definition-exists="false" ipc-concordant="G01J3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Comparing spectra of two light sources</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J3/006" definition-exists="false" ipc-concordant="G01J3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fundamentals or review articles</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J3/02" definition-exists="true" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Details</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/0202" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0202</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mechanical elements; Supports for optical elements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/0205" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>G01J3/0205</classification-symbol><class-title date-revised="2016-11-01"><title-part><CPC-specific-text><text>Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0208" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0208</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/021" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/021</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using plane or convex mirrors, parallel phase plates, or particular reflectors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0213" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0213</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using attenuators</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0216" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0216</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using light concentrators or collectors or condensers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0218" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0218</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using optical fibers</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J3/0221" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0221</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the fibers defining an entry slit</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0224" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0224</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using polarising or depolarising elements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0227" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0227</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using notch filters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0229" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0229</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using masks, aperture plates, spatial light modulators or spatial filters, e.g. reflective filters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0232" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0232</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using shutters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0235" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0235</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using means for replacing an element by another, for replacing a filter or a grating</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0237" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0237</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Adjustable, e.g. focussing</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/024" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/024</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using means for illuminating a slit efficiently (e.g. entrance slit of a spectrometer or entrance face of fiber)</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0243" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0243</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having a through-hole enabling the optical element to fulfil an additional optical function, e.g. a mirror or grating having a throughhole for a light collecting or light injecting optical fiber</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0245" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0245</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using an optical amplifier of light, e.g. doped fiber</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0248" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0248</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using a sighting port, e.g. camera or human eye</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0251" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0251</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Colorimeters making use of an integrating sphere</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/0254" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0254</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Spectrometers, other than colorimeters, making use of an integrating sphere</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/0256" definition-exists="false" ipc-concordant="G01J3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/0256</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Compact construction</text></CPC-specific-text></title-part></class-title>
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<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/1256" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/1256</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using acousto-optic tunable filter; </text><reference><text>acousto-optic elements or systems <class-ref scheme="cpc">G02F1/11</class-ref>, <class-ref scheme="cpc">G02F1/33</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/126" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Focal isolation type</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/1265" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the wavelengths being separated in time, e.g. through optical fibre array</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/1269" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1269</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Electrooptic filter</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/1273" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1273</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Order selection</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/1278" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1278</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mask with spectral selection</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/1282" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1282</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Spectrum tailoring</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/1286" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1286</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Polychromator in general</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/1291" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1291</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>polarised, birefringent</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/1295" definition-exists="false" ipc-concordant="G01J3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1295</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Plural entry slits, e.g. for different incidences</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/14" definition-exists="true" ipc-concordant="G01J3/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/14</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using refracting elements, e.g. prisms </text><reference><text><class-ref scheme="cpc">G01J3/18</class-ref>, <class-ref scheme="cpc">G01J3/26</class-ref> take precedence </text><CPC-specific-text><text>prisms <u>per se</u> <class-ref scheme="cpc">G02B5/04</class-ref></text></CPC-specific-text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/145" definition-exists="false" ipc-concordant="G01J3/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/145</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Prism systems for straight view</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/16" definition-exists="true" ipc-concordant="G01J3/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with autocollimation</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/18" definition-exists="true" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using diffraction elements, e.g. grating </text><reference><text>gratings <u>per se</u> <class-ref scheme="cpc">G02B</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/1804" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/1804</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Plane gratings</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/1809" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/1809</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Echelle gratings</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/1814" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1814</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Double monochromator</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/1819" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1819</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Double pass monochromator</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/1823" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1823</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>substractive</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/1828" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1828</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with order sorter or prefilter</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/1833" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/1833</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Grazing incidence</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/1838" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/1838</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Holographic gratings</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/1842" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1842</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Types of grating</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/1847" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1847</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Variable spacing</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/1852" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1852</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Cylindric surface</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/1857" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1857</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Toroid surface</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/1861" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1861</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Transmission gratings</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/1866" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1866</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Monochromator for three or more wavelengths</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/1871" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1871</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Duochromator</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/1876" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1876</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Polychromator</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/188" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/188</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Constant deviation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/1885" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/1885</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Holder for interchangeable gratings, e.g. at different ranges of wavelengths</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/189" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/189</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using at least one grating in an off-plane configuration</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/1895" definition-exists="false" ipc-concordant="G01J3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/1895</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using fiber Bragg gratings or gratings integrated in a waveguide</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/20" definition-exists="false" ipc-concordant="G01J3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Rowland circle spectrometers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/22" definition-exists="false" ipc-concordant="G01J3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2016-11-01" status="published"><classification-symbol>G01J3/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Littrow mirror spectrometers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/24" definition-exists="false" ipc-concordant="G01J3/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using gratings profiled to favour a specific order</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/26" definition-exists="true" ipc-concordant="G01J3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using multiple reflection, e.g. Fabry-Perot interferometer, variable interference filters</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/262" definition-exists="false" ipc-concordant="G01J3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/262</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Double pass; Multiple pass</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/265" definition-exists="false" ipc-concordant="G01J3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Read out, e.g. polychromator</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/267" definition-exists="false" ipc-concordant="G01J3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/267</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of the SISAM type</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J3/28" definition-exists="true" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/28</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Investigating the spectrum </text><reference><text>using colour filters <class-ref scheme="cpc">G01J3/51</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/2803" definition-exists="true" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/2803</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using photoelectric array detector</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2806" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2806</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Array and filter array</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/2809" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2809</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Array and correcting filter</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2813" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2813</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>2D-array</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2816" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2816</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Semiconductor laminate layer</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/282" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/282</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Modified CCD or like</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/2823" definition-exists="true" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/2823</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Imaging spectrometer</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2826" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2826</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Multispectral imaging, e.g. filter imaging</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/283" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/283</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>computer-interfaced</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2833" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2833</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and memorised spectra collection</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2836" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2836</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Programming unit, i.e. source and date processing</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/284" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/284</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Spectral construction</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2843" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2843</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Processing for eliminating interfering spectra</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/2846" definition-exists="true" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/2846</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using modulation grid; Grid spectrometers</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/285" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/285</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Hadamard transformation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/2853" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2853</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Averaging successive scans or readings</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2856" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2856</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and calculation of standard deviation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/2859" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2859</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Peak detecting in spectrum</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2863" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2863</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and calculating peak area</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/2866" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2866</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Markers; Calibrating of scan</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2869" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2869</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Background correcting</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2873" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2873</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Storing reference spectrum</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2876" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2876</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Correcting linearity of signal</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2879" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2879</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Calibrating scan, e.g. Fabry Perot interferometer</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2883" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2883</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Correcting overlapping</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/2886" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2886</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Investigating periodic spectrum</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/2889" definition-exists="true" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/2889</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Rapid scan spectrometers; Time resolved spectrometry</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/2893" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2893</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with rotating grating</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/2896" definition-exists="false" ipc-concordant="G01J3/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/2896</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Vidicon, image intensifier tube</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/30" definition-exists="false" ipc-concordant="G01J3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>G01J3/30</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Measuring the intensity of spectral lines directly on the spectrum itself </text><reference><text><class-ref scheme="cpc">G01J3/42</class-ref>, <class-ref scheme="cpc">G01J3/44</class-ref> take precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/32" definition-exists="true" ipc-concordant="G01J3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Investigating bands of a spectrum in sequence by a single detector</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/323" definition-exists="false" ipc-concordant="G01J3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/323</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Comparing line:background</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/326" definition-exists="false" ipc-concordant="G01J3/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/326</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Scanning mask, plate, chopper, e.g. small spectrum interval</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/36" definition-exists="true" ipc-concordant="G01J3/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Investigating two or more bands of a spectrum by separate detectors</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/40" definition-exists="false" ipc-concordant="G01J3/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measuring the intensity of spectral lines by determining density of a photograph of the spectrum</text></title-part><title-part><text>Spectrography </text><reference><text><class-ref scheme="cpc">G01J3/42</class-ref>, <class-ref scheme="cpc">G01J3/44</class-ref> take precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/42" definition-exists="true" ipc-concordant="G01J3/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Absorption spectrometry</text></title-part><title-part><text>Double beam spectrometry</text></title-part><title-part><text>Flicker spectrometry</text></title-part><title-part><text>Reflection spectrometry </text><reference><text>beam switching arrangements <class-ref scheme="cpc">G01J3/08</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/421" definition-exists="false" ipc-concordant="G01J3/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/421</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Single beam</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/423" definition-exists="false" ipc-concordant="G01J3/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/423</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Spectral arrangements using lasers, e.g. tunable</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/425" definition-exists="false" ipc-concordant="G01J3/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/425</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Reflectance</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/427" definition-exists="false" ipc-concordant="G01J3/427" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/427</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Dual wavelengths spectrometry</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/4275" definition-exists="false" ipc-concordant="G01J3/427" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/4275</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Polarised dual wavelength spectrometry</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/433" definition-exists="true" ipc-concordant="G01J3/433" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/433</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Modulation spectrometry</text></title-part><title-part><text>Derivative spectrometry</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/4332" definition-exists="false" ipc-concordant="G01J3/433" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2018-01-01" status="published"><classification-symbol>G01J2003/4332</classification-symbol><class-title date-revised="2018-01-01"><title-part><CPC-specific-text><text>frequency-modulated</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/4334" definition-exists="false" ipc-concordant="G01J3/433" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/4334</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by modulation of source, e.g. current modulation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/4336" definition-exists="false" ipc-concordant="G01J3/433" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/4336</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by magnetic modulation, e.g. Zeeman effect</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J3/4338" definition-exists="true" ipc-concordant="G01J3/433" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/4338</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Frequency modulated spectrometry</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/44" definition-exists="true" ipc-concordant="G01J3/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>G01J3/44</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>Raman spectrometry</text></title-part><title-part><text>Scattering spectrometry </text><CPC-specific-text><text>; Fluorescence spectrometry</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/4406" definition-exists="true" ipc-concordant="G01J3/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/4406</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fluorescence spectrometry</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/4412" definition-exists="true" ipc-concordant="G01J3/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/4412</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Scattering spectrometry </text><reference><text>particle sizing by light scattering <class-ref scheme="cpc">G01N15/0205</class-ref>; optical velocimetry of particles <class-ref scheme="cpc">G01P5/20</class-ref>, <class-ref scheme="cpc">G01P5/26</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/4418" definition-exists="false" ipc-concordant="G01J3/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/4418</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Power spectrum</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/4424" definition-exists="false" ipc-concordant="G01J3/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/4424</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fluorescence correction for Raman spectrometry</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/443" definition-exists="true" ipc-concordant="G01J3/443" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/443</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Emission spectrometry</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/4435" definition-exists="false" ipc-concordant="G01J3/443" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/4435</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Measuring ratio of two lines, e.g. internal standard</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/447" definition-exists="true" ipc-concordant="G01J3/447" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/447</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Polarisation spectrometry</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/45" definition-exists="true" ipc-concordant="G01J3/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/45</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Interferometric spectrometry</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/451" definition-exists="false" ipc-concordant="G01J3/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/451</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Dispersive interferometric spectrometry</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/452" definition-exists="false" ipc-concordant="G01J3/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/452</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with recording of image of spectral transformation, e.g. hologram</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/453" definition-exists="true" ipc-concordant="G01J3/453" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/453</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by correlation of the amplitudes</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J3/4531" definition-exists="false" ipc-concordant="G01J3/453" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/4531</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices without moving parts</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J3/4532" definition-exists="false" ipc-concordant="G01J3/453" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/4532</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices of compact or symmetric construction </text><reference><text><class-ref scheme="cpc">G01J3/4531</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/4534" definition-exists="false" ipc-concordant="G01J3/453" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/4534</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Interferometer on illuminating side</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J3/4535" definition-exists="false" ipc-concordant="G01J3/453" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/4535</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices with moving mirror </text><reference><text><class-ref scheme="cpc">G01J3/4532</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J3/4537" definition-exists="false" ipc-concordant="G01J3/453" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/4537</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices with refractive scan</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J3/4538" definition-exists="false" ipc-concordant="G01J3/453" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/4538</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Special processing</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/457" definition-exists="true" ipc-concordant="G01J3/457" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/457</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Correlation spectrometry, e.g. of the intensity </text><reference><text><class-ref scheme="cpc">G01J3/453</class-ref> takes precedence</text></reference></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J3/46" definition-exists="true" ipc-concordant="G01J3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measurement of colour</text></title-part><title-part><text>Colour measuring devices, e.g. colorimeters </text><reference><text>measuring colour temperature <class-ref scheme="cpc">G01J5/60</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/461" definition-exists="true" ipc-concordant="G01J3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/461</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with colour spinners</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/462" definition-exists="true" ipc-concordant="G01J3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/462</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Computing operations in or between colour spaces; Colour management systems</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/463" definition-exists="true" ipc-concordant="G01J3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/463</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Colour matching</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/465" definition-exists="true" ipc-concordant="G01J3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/465</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>taking into account the colour perception of the eye; using tristimulus detection</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/466" definition-exists="false" ipc-concordant="G01J3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/466</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Coded colour; Recognition of predetermined colour; Determining proximity to predetermined colour</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/467" definition-exists="false" ipc-concordant="G01J3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/467</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Colour computing</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J3/468" definition-exists="false" ipc-concordant="G01J3/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/468</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of objects containing fluorescent agent</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/50" definition-exists="true" ipc-concordant="G01J3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/50</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using electric radiation detectors</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/501" definition-exists="true" ipc-concordant="G01J3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/501</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Colorimeters using spectrally-selective light sources, e.g. LEDs</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/502" definition-exists="false" ipc-concordant="G01J3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/502</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using a dispersive element, e.g. grating, prism</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/503" definition-exists="false" ipc-concordant="G01J3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/503</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Densitometric colour measurements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/504" definition-exists="false" ipc-concordant="G01J3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/504</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Goniometric colour measurements, for example measurements of metallic or flake based paints</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/505" definition-exists="false" ipc-concordant="G01J3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/505</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>measuring the colour produced by lighting fixtures other than screens, monitors, displays or CRTs</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/506" definition-exists="false" ipc-concordant="G01J3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/506</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>measuring the colour produced by screens, monitors, displays or CRTs</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J3/507" definition-exists="false" ipc-concordant="G01J3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/507</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the detectors being physically selective</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/508" definition-exists="false" ipc-concordant="G01J3/50" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/508</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>measuring the colour of teeth</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/51" definition-exists="true" ipc-concordant="G01J3/51" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/51</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using colour filters</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J3/513" definition-exists="true" ipc-concordant="G01J3/51" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/513</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having fixed filter-detector pairs</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="12" additional-only="true" sort-key="G01J3/516" definition-exists="false" ipc-concordant="G01J3/51" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2003/516</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with several stacked filters or stacked filter-detector pairs</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J3/52" definition-exists="true" ipc-concordant="G01J3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using colour charts</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/522" definition-exists="true" ipc-concordant="G01J3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/522</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>circular colour charts</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/524" definition-exists="true" ipc-concordant="G01J3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/524</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Calibration of colorimeters</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J3/526" definition-exists="true" ipc-concordant="G01J3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/526</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for choosing a combination of different colours, e.g. to produce a pleasing effect for an observer</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J3/528" definition-exists="true" ipc-concordant="G01J3/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J3/528</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using colour harmony theory</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="G01J4/00" definition-exists="true" ipc-concordant="G01J4/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J4/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measuring polarisation of light </text><reference><text>investigating or analysing materials by measuring rotation of plane of polarised light <class-ref scheme="cpc">G01N21/21</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J4/001" definition-exists="false" ipc-concordant="G01J4/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2004/001</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Devices</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J4/002" definition-exists="false" ipc-concordant="G01J4/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2004/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Selecting polarisation direction</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J4/004" definition-exists="false" ipc-concordant="G01J4/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2004/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>sequential, i.e. time-divided</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J4/005" definition-exists="false" ipc-concordant="G01J4/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2004/005</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>simultaneous, i.e. space-divided</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J4/007" definition-exists="false" ipc-concordant="G01J4/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2004/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mechanical mounting</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J4/008" definition-exists="false" ipc-concordant="G01J4/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2004/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Polarisation rate</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J4/02" definition-exists="true" ipc-concordant="G01J4/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J4/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Polarimeters of separated-field type</text></title-part><title-part><text>Polarimeters of half-shadow type</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J4/04" definition-exists="true" ipc-concordant="G01J4/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J4/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Polarimeters using electric detection means </text><reference><text><class-ref scheme="cpc">G01J4/02</class-ref> takes precedence</text></reference></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="G01J5/00" definition-exists="true" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/00</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Radiation pyrometry, e.g. infrared or optical thermometry</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">Group <class-ref scheme="cpc">G01J5/00</class-ref> is impacted by reclassification into group <class-ref scheme="cpc">G01J5/90</class-ref>. <br/>Groups <class-ref scheme="cpc">G01J5/00</class-ref> and <class-ref scheme="cpc">G01J5/90</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/0003" definition-exists="true" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0003</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for sensing the radiant heat transfer of samples, e.g. emittance meter</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0007" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of wafers or semiconductor substrates, e.g. using Rapid Thermal Processing</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0011" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0011</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Ear thermometers </text><reference><text><class-ref scheme="cpc">G01J5/021</class-ref> and <class-ref scheme="cpc">G01J5/049</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/0014" definition-exists="true" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0014</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for sensing the radiation from gases, flames</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0018" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0018</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Flames, plasma or welding</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/0022" definition-exists="true" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for sensing the radiation of moving bodies</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0025" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Living bodies </text><reference><text>ear thermometers <class-ref scheme="cpc">G01J5/0011</class-ref>; detecting, measuring or recording for diagnostic purposes <class-ref scheme="cpc">A61B5/00</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J5/0029" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/0029</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sheet</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J5/0033" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/0033</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Wheel</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/0037" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0037</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for sensing the heat emitted by liquids</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/004" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by molten metals</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/0044" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0044</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Furnaces, ovens, kilns </text><reference><text><class-ref scheme="cpc">G01J5/0007</class-ref>, <class-ref scheme="cpc">G01J5/004</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/0066" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for hot spots detection</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/007" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/007</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for earth observation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J5/0074" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/0074</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>having separate detection of emissivity</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J5/0077" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/0077</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Imaging</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/0088" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0088</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>in turbines</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J5/0092" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J2005/0092</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Temperature by averaging, e.g. by scan </text><reference><text>thermography <class-ref scheme="cpc">G01J5/48</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/0096" definition-exists="false" ipc-concordant="G01J5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0096</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for measuring wires, electrical contacts or electronic systems</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/02" definition-exists="true" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/02</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Constructional details</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">Group <class-ref scheme="cpc">G01J5/02</class-ref> is impacted by reclassification into group <class-ref scheme="cpc">G01J5/05</class-ref>.<br/>Groups <class-ref scheme="cpc">G01J5/02</class-ref> and <class-ref scheme="cpc">G01J5/05</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0205" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0205</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mechanical elements; Supports for optical elements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/021" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/021</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Probe covers for thermometers, e.g. tympanic thermometers; Containers for probe covers; Disposable probes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0215" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0215</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Compact construction</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/022" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/022</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Monolithic</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0225" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0225</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Shape of the cavity itself or of elements contained in or suspended over the cavity</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/023" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Particular leg structure or construction or shape; Nanotubes</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0235" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0235</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Spacers, e.g. for avoidance of stiction</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/024" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/024</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Special manufacturing steps or sacrificial layers or layer structures</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0245" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0245</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for performing thermal shunt</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/025" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/025</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Interfacing a pyrometer to an external device or network; User interface</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0255" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0255</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Sample holders for pyrometry; Cleaning of sample </text><reference><text>using a gas purge <class-ref scheme="cpc">G01J5/051</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/026" definition-exists="true" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/026</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Control of working procedures of a pyrometer, other than calibration; Bandwidth calculation; Gain control</text></CPC-specific-text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">Group <class-ref scheme="cpc">G01J5/026</class-ref> is impacted by reclassification into group <class-ref scheme="cpc">G01J5/90</class-ref>.<br/>Groups <class-ref scheme="cpc">G01J5/026</class-ref> and <class-ref scheme="cpc">G01J5/90</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0265" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Handheld, portable </text><reference><text>ear thermometers <class-ref scheme="cpc">G01J5/049</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/027" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/027</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>making use of sensor-related data, e.g. for identification of sensor parts or optical elements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0275" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0275</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Control or determination of height or distance or angle information for sensors or receivers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/028" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using a charging unit or battery</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/0295" definition-exists="false" ipc-concordant="G01J5/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0295</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Nulling devices or absolute detection</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/03" definition-exists="true" ipc-concordant="G01J5/03" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/03</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Arrangements for indicating or recording specially adapted for radiation pyrometers</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/04" definition-exists="true" ipc-concordant="G01J5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/04</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Casings</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/041" definition-exists="true" ipc-concordant="G01J5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/041</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mountings in enclosures or in a particular environment</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/042" definition-exists="false" ipc-concordant="G01J5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/042</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>High-temperature environment </text><reference><text><class-ref scheme="cpc">G01J5/0007</class-ref>, <class-ref scheme="cpc">G01J5/0044</class-ref>, <class-ref scheme="cpc">G01J5/0088</class-ref> and <class-ref scheme="cpc">G01J5/004</class-ref> take precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/044" definition-exists="false" ipc-concordant="G01J5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/044</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Environment with strong vibrations or shocks</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/045" definition-exists="false" ipc-concordant="G01J5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/045</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sealings; Vacuum enclosures; Encapsulated packages; Wafer bonding structures; Getter arrangements </text><reference><text>getter arrangements <u>per se</u> <class-ref scheme="cpc">H01L23/26</class-ref> and <class-ref scheme="cpc">H01L21/3221</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/046" definition-exists="false" ipc-concordant="G01J5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/046</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Materials; Selection of thermal materials</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/047" definition-exists="false" ipc-concordant="G01J5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/047</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mobile mounting; Scanning arrangements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/048" definition-exists="false" ipc-concordant="G01J5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/048</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Protective parts</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/049" definition-exists="false" ipc-concordant="G01J5/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/049</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Casings for tympanic thermometers</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/05" definition-exists="true" ipc-concordant="G01J5/05" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/05</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Means for preventing contamination of the components of the optical system</text></title-part><title-part><text>Means for preventing obstruction of the radiation path</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/05</class-ref> is incomplete pending reclassification of documents from group <class-ref scheme="cpc">G01J5/02</class-ref>. <br/>Groups <class-ref scheme="cpc">G01J5/02</class-ref> and <class-ref scheme="cpc">G01J5/05</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/051" definition-exists="false" ipc-concordant="G01J5/05" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/051</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>using a gas purge</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/06" definition-exists="true" ipc-concordant="G01J5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/06</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Arrangements for eliminating effects of disturbing radiation</text></title-part><title-part><text>Arrangements for compensating changes in sensitivity </text><reference><text>for adjusting of solid angle of collected radiation <class-ref scheme="cpc">G01J5/07</class-ref>; means for wavelength selection <class-ref scheme="cpc">G01J5/0801</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/061" definition-exists="true" ipc-concordant="G01J5/061" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/061</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>by controlling the temperature of the apparatus or parts thereof, e.g. using cooling means or thermostats</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J5/062" definition-exists="false" ipc-concordant="G01J5/061" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J2005/062</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Peltier</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J5/063" definition-exists="false" ipc-concordant="G01J5/061" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J2005/063</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Heating; Thermostating</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/064" definition-exists="false" ipc-concordant="G01J5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/064</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Ambient temperature sensor; Housing temperature sensor; Constructional details thereof</text></CPC-specific-text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">Group <class-ref scheme="cpc">G01J5/064</class-ref> is impacted by reclassification into group <class-ref scheme="cpc">G01J5/70</class-ref>.<br/>Groups <class-ref scheme="cpc">G01J5/064</class-ref> and <class-ref scheme="cpc">G01J5/70</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/065" definition-exists="false" ipc-concordant="G01J5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/065</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by shielding</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/066" definition-exists="false" ipc-concordant="G01J5/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/066</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Differential arrangement, i.e. sensitive/not sensitive</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/068" definition-exists="false" ipc-concordant="G01J5/068" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/068</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>by controlling parameters other than temperature</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/07" definition-exists="true" ipc-concordant="G01J5/07" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/07</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position </text><reference><text>optical collimating elements <class-ref scheme="cpc">G01J5/0806</class-ref></text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/08" definition-exists="true" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/08</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Optical arrangements</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">Group <class-ref scheme="cpc">G01J5/08</class-ref> is impacted by reclassification into groups <class-ref scheme="cpc">G01J5/0801</class-ref> and <class-ref scheme="cpc">G01J5/0803</class-ref>.<br/>Groups <class-ref scheme="cpc">G01J5/08</class-ref>, <class-ref scheme="cpc">G01J5/0801</class-ref>, and <class-ref scheme="cpc">G01J5/0803</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0801" definition-exists="true" ipc-concordant="G01J5/0801" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0801</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Means for wavelength selection or discrimination</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/0801</class-ref> is incomplete pending reclassification of documents from groups <class-ref scheme="cpc">G01J5/08</class-ref> and <class-ref scheme="cpc">G01J5/0803</class-ref>. <br/>Groups <class-ref scheme="cpc">G01J5/08</class-ref>, <class-ref scheme="cpc">G01J5/0803</class-ref>, and <class-ref scheme="cpc">G01J5/0801</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/0802" definition-exists="true" ipc-concordant="G01J5/0802" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0802</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Optical filters</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G01J5/08021" definition-exists="false" ipc-concordant="G01J5/0802" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/08021</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Notch filters</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0803" definition-exists="false" ipc-concordant="G01J5/0803" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0803</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Arrangements for time-dependent attenuation of radiation signals</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/0803</class-ref> is incomplete pending reclassification of documents from groups <class-ref scheme="cpc">G01J5/08</class-ref> and <class-ref scheme="cpc">G01J5/0816</class-ref>. <br/>Group <class-ref scheme="cpc">G01J5/0803</class-ref> is also impacted by reclassification into groups <class-ref scheme="cpc">G01J5/0801</class-ref> and <class-ref scheme="cpc">G01J5/0879</class-ref>. <br/>All groups listed in this Warning should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/0804" definition-exists="false" ipc-concordant="G01J5/0804" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0804</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Shutters</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">Group <class-ref scheme="cpc">G01J5/0804</class-ref> is impacted by reclassification into group <class-ref scheme="cpc">G01J5/0805</class-ref>. <br/>Groups <class-ref scheme="cpc">G01J5/0804</class-ref> and <class-ref scheme="cpc">G01J5/0805</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/0805" definition-exists="true" ipc-concordant="G01J5/0805" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0805</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Means for chopping radiation</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/0805</class-ref> is incomplete pending reclassification of documents from group <class-ref scheme="cpc">G01J5/0804</class-ref>. <br/>Groups <class-ref scheme="cpc">G01J5/0804</class-ref> and <class-ref scheme="cpc">G01J5/0805</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0806" definition-exists="false" ipc-concordant="G01J5/0806" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0806</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Focusing or collimating elements, e.g. lenses or concave mirrors</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0808" definition-exists="false" ipc-concordant="G01J5/0808" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0808</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Convex mirrors</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">Group <class-ref scheme="cpc">G01J5/0808</class-ref> is impacted by reclassification into groups <class-ref scheme="cpc">G01J5/0813</class-ref> and <class-ref scheme="cpc">G01J5/0814</class-ref>.<br/>All groups listed in this Warning should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0813" definition-exists="false" ipc-concordant="G01J5/0813" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0813</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Planar mirrors</text></title-part><title-part><text>Parallel phase plates</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/0813</class-ref> is incomplete pending reclassification of documents from group <class-ref scheme="cpc">G01J5/0808</class-ref>. <br/>Groups <class-ref scheme="cpc">G01J5/0808</class-ref> and <class-ref scheme="cpc">G01J5/0813</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0814" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0814</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Particular reflectors, e.g. faceted or dichroic mirrors</text></CPC-specific-text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/0814</class-ref> is incomplete pending reclassification of documents from group <class-ref scheme="cpc">G01J5/0808</class-ref>.<br/>Groups <class-ref scheme="cpc">G01J5/0808</class-ref> and <class-ref scheme="cpc">G01J5/0814</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0815" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0815</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Light concentrators, collectors or condensers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0816" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0816</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>using attenuators</text></CPC-specific-text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">Group <class-ref scheme="cpc">G01J5/0816</class-ref> is impacted by reclassification into group <class-ref scheme="cpc">G01J5/0803</class-ref>. <br/>Groups <class-ref scheme="cpc">G01J5/0816</class-ref> and <class-ref scheme="cpc">G01J5/0803</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0818" definition-exists="false" ipc-concordant="G01J5/0818" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0818</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Waveguides</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/0821" definition-exists="false" ipc-concordant="G01J5/0821" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0821</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Optical fibres</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0831" definition-exists="false" ipc-concordant="G01J5/0831" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0831</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Masks</text></title-part><title-part><text>Aperture plates</text></title-part><title-part><text>Spatial light modulators</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0837" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0837</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Microantennas, e.g. bow-tie</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/084" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/084</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Adjustable or slidable</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/0843" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0843</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Manually adjustable</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0846" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0846</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>having multiple detectors for performing different types of detection, e.g. using radiometry and reflectometry channels</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/085" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/085</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>having a through-hole enabling the optical elements to fulfil an additional optical function, e.g. mirrors or gratings having a through-hole for a light collecting or light injecting optical fiber</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0853" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0853</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>having infrared absorbers other than the usual absorber layers deposited on infrared detectors like bolometers, wherein the heat propagation between the absorber and the detecting element occurs within a solid</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0856" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0856</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Slit arrangements</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0859" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0859</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Sighting arrangements, e.g. cameras</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0865" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0865</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>having means for replacing an element of the arrangement by another of the same type, e.g. an optical filter</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0868" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0868</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Means for illuminating a slit or a surface efficiently, e.g. entrance slit of a pyrometer or entrance face of a fiber</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0871" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0871</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Beam switching arrangements; Photodetection involving different fields of view for a single detector</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0875" definition-exists="true" ipc-concordant="G01J5/0875" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0875</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Windows</text></title-part><title-part><text>Arrangements for fastening thereof</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0878" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0878</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Diffusers</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0879" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/0879</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Optical elements not provided otherwise, e.g. optical manifolds, holograms, cubic beamsplitters, non-dispersive prisms or particular coatings</text></CPC-specific-text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/0879</class-ref> is incomplete pending reclassification of documents from group <class-ref scheme="cpc">G01J5/0803</class-ref>.<br/>Groups <class-ref scheme="cpc">G01J5/0803</class-ref> and <class-ref scheme="cpc">G01J5/0879</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0881" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0881</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Compact construction</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/0884" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0884</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Monolithic</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0887" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0887</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Integrating cavities mimicking black bodies, wherein the heat propagation between the black body and the measuring element does not occur within a solid; Use of bodies placed inside the fluid stream for measurement of the temperature of gases; Use of the reemission from a surface, e.g. reflective surface; Emissivity enhancement by multiple reflections</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0893" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0893</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangements to attach devices to a pyrometer, i.e. attaching an optical interface; Spatial relative arrangement of optical elements, e.g. folded beam path </text><reference><text><class-ref scheme="cpc">G01J5/049</class-ref> takes precedence</text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/0896" definition-exists="false" ipc-concordant="G01J5/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/0896</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using a light source, e.g. for illuminating a surface</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/10" definition-exists="true" ipc-concordant="G01J5/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using electric radiation detectors</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J5/103" definition-exists="false" ipc-concordant="G01J5/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/103</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Absorbing heated plate or film and temperature detector</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J5/106" definition-exists="false" ipc-concordant="G01J5/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/106</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrays</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/12" definition-exists="true" ipc-concordant="G01J5/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/12</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using thermoelectric elements, e.g. thermocouples</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/123" definition-exists="false" ipc-concordant="G01J5/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/123</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Thermoelectric array</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/126" definition-exists="false" ipc-concordant="G01J5/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/126</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Thermoelectric black plate and thermocouple</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/14" definition-exists="true" ipc-concordant="G01J5/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/14</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Electrical features thereof</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/16" definition-exists="true" ipc-concordant="G01J5/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Arrangements with respect to the cold junction</text></title-part><title-part><text>Compensating influence of ambient temperature or other variables</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/20" definition-exists="true" ipc-concordant="G01J5/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/20</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using resistors, thermistors or semiconductors sensitive to radiation, e.g. photoconductive devices</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/202" definition-exists="false" ipc-concordant="G01J5/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/202</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrays</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J5/204" definition-exists="false" ipc-concordant="G01J5/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/204</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>prepared by semiconductor processing, e.g. VLSI</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/206" definition-exists="false" ipc-concordant="G01J5/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/206</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>on foils</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/208" definition-exists="false" ipc-concordant="G01J5/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/208</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>superconductive</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/22" definition-exists="true" ipc-concordant="G01J5/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/22</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Electrical features thereof</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G01J5/24" definition-exists="false" ipc-concordant="G01J5/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/24</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Use of specially adapted circuits, e.g. bridge circuits</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/28" definition-exists="false" ipc-concordant="G01J5/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/28</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using photoemissive or photovoltaic cells</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/283" definition-exists="false" ipc-concordant="G01J5/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/283</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Array</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="11" additional-only="true" sort-key="G01J5/286" definition-exists="false" ipc-concordant="G01J5/28" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/286</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrangement of conductor therefor</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/30" definition-exists="false" ipc-concordant="G01J5/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/30</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Electrical features thereof</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/34" definition-exists="true" ipc-concordant="G01J5/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/34</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using capacitors, e.g. pyroelectric capacitors</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-source">Group <class-ref scheme="cpc">G01J5/34</class-ref> is impacted by reclassification into group <class-ref scheme="cpc">G01J5/35</class-ref>. <br/>Groups <class-ref scheme="cpc">G01J5/34</class-ref> and <class-ref scheme="cpc">G01J5/35</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/345" definition-exists="false" ipc-concordant="G01J5/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2005/345</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Arrays</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/35" definition-exists="false" ipc-concordant="G01J5/35" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/35</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Electrical features thereof</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/35</class-ref> is incomplete pending reclassification of documents from group <class-ref scheme="cpc">G01J5/34</class-ref>.<br/>Groups <class-ref scheme="cpc">G01J5/34</class-ref> and <class-ref scheme="cpc">G01J5/35</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/36" definition-exists="false" ipc-concordant="G01J5/36" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/36</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using ionisation of gases</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/38" definition-exists="false" ipc-concordant="G01J5/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using extension or expansion of solids or fluids</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/40" definition-exists="true" ipc-concordant="G01J5/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/40</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using bimaterial elements</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/42" definition-exists="false" ipc-concordant="G01J5/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using Golay cells</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/425" definition-exists="false" ipc-concordant="G01J5/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>G01J2005/425</classification-symbol><class-title date-revised="2017-08-01"><title-part><CPC-specific-text><text>Microarray</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/44" definition-exists="true" ipc-concordant="G01J5/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/44</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using change of resonant frequency, e.g. of piezo-electric crystals</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/46" definition-exists="false" ipc-concordant="G01J5/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J5/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using radiation pressure or radiometer effect</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/48" definition-exists="true" ipc-concordant="G01J5/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/48</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Thermography</text></title-part><title-part><text>Techniques using wholly visual means</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/485" definition-exists="false" ipc-concordant="G01J5/48" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/485</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Temperature profile</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/52" definition-exists="true" ipc-concordant="G01J5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/52</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using comparison with reference sources, e.g. disappearing-filament pyrometer</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J5/526" definition-exists="false" ipc-concordant="G01J5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J2005/526</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Periodic insertion of emissive surface</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J5/528" definition-exists="false" ipc-concordant="G01J5/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J2005/528</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Periodic comparison</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/53" definition-exists="true" ipc-concordant="G01J5/53" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/53</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Reference sources, e.g. standard lamps</text></title-part><title-part><text>Black bodies</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G01J5/532" definition-exists="false" ipc-concordant="G01J5/53" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/532</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>using a reference heater of the emissive surface type, e.g. for selectively absorbing materials</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/54" definition-exists="false" ipc-concordant="G01J5/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/54</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Optical arrangements</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/56" definition-exists="false" ipc-concordant="G01J5/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/56</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Electrical features thereof</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/58" definition-exists="true" ipc-concordant="G01J5/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/58</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using absorption</text></title-part><title-part><text>using extinction effect</text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J5/583" definition-exists="false" ipc-concordant="G01J5/58" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J2005/583</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Interferences, i.e. fringe variation with temperature</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/59" definition-exists="true" ipc-concordant="G01J5/59" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/59</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using polarisation</text></title-part><title-part><text>Details thereof</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/60" definition-exists="true" ipc-concordant="G01J5/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/60</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>using determination of colour temperature</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/601" definition-exists="true" ipc-concordant="G01J5/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/601</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>using spectral scanning</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/602" definition-exists="true" ipc-concordant="G01J5/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/602</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>using selective, monochromatic or bandpass filtering</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J5/604" definition-exists="false" ipc-concordant="G01J5/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J2005/604</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>bandpass filtered</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/605" definition-exists="false" ipc-concordant="G01J5/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/605</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>using visual determination</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J5/607" definition-exists="false" ipc-concordant="G01J5/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J2005/607</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>on two separate detectors</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J5/608" definition-exists="false" ipc-concordant="G01J5/60" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J2005/608</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>Colour temperature of light sources</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/70" definition-exists="false" ipc-concordant="G01J5/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/70</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Passive compensation of pyrometer measurements, e.g. using ambient temperature sensing or sensing of temperature within housing</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/70</class-ref> is incomplete pending reclassification of documents from group <class-ref scheme="cpc">G01J5/064</class-ref>. <br/>Groups <class-ref scheme="cpc">G01J5/064</class-ref> and <class-ref scheme="cpc">G01J5/70</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/80" definition-exists="true" ipc-concordant="G01J5/80" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/80</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Calibration </text><reference><text>using comparison with reference sources <class-ref scheme="cpc">G01J5/52</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/802" definition-exists="false" ipc-concordant="G01J5/80" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/802</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>by correcting for emissivity</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/804" definition-exists="false" ipc-concordant="G01J5/80" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/804</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>using atmospheric correction</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/806" definition-exists="false" ipc-concordant="G01J5/80" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/806</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>by correcting for reflection of the emitter radiation</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J5/808" definition-exists="false" ipc-concordant="G01J5/80" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/808</classification-symbol><class-title date-revised="2022-01-01"><title-part><CPC-specific-text><text>using linearising circuits</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J5/90" definition-exists="true" ipc-concordant="G01J5/90" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2022-01-01" status="published"><classification-symbol>G01J5/90</classification-symbol><class-title date-revised="2022-01-01"><title-part><text>Testing, inspecting or checking operation of radiation pyrometers</text></title-part></class-title><notes-and-warnings><note type="warning"><note-paragraph warning-type="reclass-destination">Group <class-ref scheme="cpc">G01J5/90</class-ref> is incomplete pending reclassification of documents from group <class-ref scheme="cpc">G01J5/00</class-ref>.<br/>Groups <class-ref scheme="cpc">G01J5/00</class-ref> and <class-ref scheme="cpc">G01J5/90</class-ref> should be considered in order to perform a complete search.</note-paragraph></note></notes-and-warnings></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="G01J7/00" definition-exists="true" ipc-concordant="G01J7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measuring velocity of light</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="G01J9/00" definition-exists="true" ipc-concordant="G01J9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J9/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Measuring optical phase difference </text><reference><text>devices or arrangements for controlling the phase of light beams <class-ref scheme="cpc">G02F1/01</class-ref></text></reference></title-part><title-part><text>Determining degree of coherence</text></title-part><title-part><text>Measuring optical wavelength </text><reference><text>spectrometry <class-ref scheme="cpc">G01J3/00</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J9/002" definition-exists="false" ipc-concordant="G01J9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/002</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Wavefront phase distribution</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J9/004" definition-exists="false" ipc-concordant="G01J9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/004</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Mode pattern</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="8" additional-only="true" sort-key="G01J9/006" definition-exists="false" ipc-concordant="G01J9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/006</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using pulses for physical measurements</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/008" definition-exists="false" ipc-concordant="G01J9/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/008</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using decay time in cavity</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J9/02" definition-exists="true" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J9/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by interferometric methods </text><reference><text>using interferometers for measuring optically the linear dimensions of objects <class-ref scheme="cpc">G01B9/02</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0203" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0203</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Phased array of beams</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0207" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0207</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Double frequency, e.g. Zeeman</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0211" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0211</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>for measuring coherence</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J9/0215" definition-exists="true" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J9/0215</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>by shearing interferometric methods</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J9/0219" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0219</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using two or more gratings</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0223" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0223</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Common path interferometry; Point diffraction interferometry</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0226" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0226</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fibres</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J9/023" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/023</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of the integrated optical type</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0234" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0234</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Measurement of the fringe pattern</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J9/0238" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0238</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>the pattern being processed optically, e.g. by Fourier transformation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0242" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0242</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Compensator</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G01J9/0246" definition-exists="true" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J9/0246</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Measuring optical wavelength</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0249" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0249</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with modulation</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J9/0253" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0253</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>of wavelength</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0261" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0261</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>polarised</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J9/0265" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with phase modulation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/0269" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0269</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Microscope type</text></CPC-specific-text></title-part></class-title></classification-item>
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<classification-item breakdown-code="true" not-allocatable="false" level="9" additional-only="true" sort-key="G01J9/028" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/028</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Types</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J9/0284" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0284</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Michelson</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J9/0288" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0288</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Machzehnder</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J9/0292" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0292</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Fizeau; Wedge</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="true" not-allocatable="false" level="10" additional-only="true" sort-key="G01J9/0296" definition-exists="false" ipc-concordant="G01J9/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J2009/0296</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>achromatic</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G01J9/04" definition-exists="true" ipc-concordant="G01J9/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G01J9/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by beating two waves of a same source but of different frequency and measuring the phase shift of the lower frequency obtained</text></title-part></class-title></classification-item></classification-item>
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