IPC Subgroup
G01J 3/51 using colour filters
Introduced: January 1985
Last revised: January 2006
Full Title
Spectrometry; Spectrophotometry; Monochromators; Measuring colours > Measurement of colour; Colour measuring devices, e.g. colorimeters > using electric radiation detectors > using colour filters
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