Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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3/00
Spectrometry; Spectrophotometry; Monochromators; Measuring colours
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G01J3/46
Measurement of colour; Colour measuring devices, e.g. colorimeters
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G01J3/50
using electric radiation detectors
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G01J2003/507
the detectors being physically selective
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