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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G01J3/12
Generating the spectrum; Monochromators
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G01J2003/1213
Filters in general, e.g. dichroic, band
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G01J2003/1217
Indexed discrete filters or choppers
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