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GABRIEL CROMER
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GABRIEL CROMER
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Publication of FR15662EpublicationCriticalpatent/FR15662E/fr
G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
G01J1/00—Photometry, e.g. photographic exposure meter
G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
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Physics & Mathematics
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General Physics & Mathematics
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Spectroscopy & Molecular Physics
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FR15662D1911-12-201912-01-11Curseurs donnant directement le tirage et le diaphragme exacts pour la mise au point
ExpiredFR15662E
(fr)