(0)G01J:0/1:
IPC6
SECTION G - PHYSICS
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,...
G01J
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G 01 J

 MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F 21, H 01 J, H 01 K, H 05 B; investigating properties of materials by optical means G 01 N) [2]
 

Notes

(1)

 This subclass covers the detection of the presence or absence of infra-red, visible, or ultra-violet light, not otherwise provided for.

(2)

 Attention is drawn to the Notes following the title of class G 01.

 

 

 
 

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/ 00 Photometry, e.g. photographic exposure meter (spectrophotometry G 01 J 3/00; specially adapted for radiation pyrometry G 01 J 5/00)

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/ 02 • Details  

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/ 04 • • Optical or mechanical part  

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/ 06 • • • Restricting the angle of incident light  

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/ 08 • • Arrangements of light sources specially adapted for photometry  

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/ 10 • by comparison with reference light or electric value  

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/ 12 • • using wholly visual means (G 01 J 1/20 takes precedence)  

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/ 14 • • • using comparison with a surface of graded brightness  

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/ 16 • • using electric radiation detectors (G 01 J 1/20 takes precedence)  

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/ 18 • • • using comparison with a reference electric value  

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/ 20 • • intensity of the measured or reference value being varied to equalise their effects at the detector, e.g. by varying incidence angle  

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/ 22 • • • using a variable element in the light-path, e.g. filter, polarising means (G 01 J 1/34 takes precedence)  

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/ 24 • • • • using electric radiation detectors  

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/ 26 • • • • • adapted for automatic variation of the measured or reference value (regulation of light intensity G 05 D 25/00)  

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/ 28 • • • using variation of intensity or distance of source (G 01 J 1/34 takes precedence)  

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/ 30 • • • • using electric radiation detectors  

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/ 32 • • • • • adapted for automatic variation of the measured or reference value (regulation of light intensity G 05 D 25/00)  

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/ 34 • • • using separate light-paths used alternately or sequentially, e.g. flicker  

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/ 36 • • • • using electric radiation detectors  

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/ 38 • using wholly visual means (G 01 J 1/10 takes precedence)  

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/ 40 • • using limit of visibility or extinction effect  

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/ 42 • using electric radiation detectors (optical or mechanical part G 01 J 1/04; by comparison with a reference light or electric value G 01 J 1/10)  

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/ 44 • • Electric circuits  

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/ 46 • • • using a capacitor  

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/ 48 • using chemical effects  

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/ 50 • • using change in colour of an indicator, e.g. actinometer  

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/ 52 • • using photographic effects  

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/ 54 • • by observing photo-reactions between gases  

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/ 56 • using radiation pressure or radiometer effect  

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/ 58 • using luminescence generated by light  

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/ 60 • by measuring the pupil of the eye  
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