IPC Main Group
G01J 1/00 Photometry, e.g. photographic exposure meter
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
Related Keywords
measuring photographic EXPOSURE timemeasuring exposure time for PHOTOGRAPHYPHOTOMETRY
8 direct subcodes
Child Classifications
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- G01J 1/02 Details
- G01J 1/1 by comparison with reference light or electric value
- G01J 1/38 using wholly visual means
- G01J 1/42 using electric radiation detectors
- G01J 1/48 using chemical effects
- G01J 1/56 using radiation pressure or radiometer effect
- G01J 1/58 using luminescence generated by light
- G01J 1/6 by measuring the pupil of the eye