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Zeiss Ikon AG
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Zeiss Ikon AG
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Application filed by Zeiss Ikon AGfiledCriticalZeiss Ikon AG
Application grantedgrantedCritical
Publication of FR887361ApublicationCriticalpatent/FR887361A/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
G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
G01J1/4219—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for enlargers
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Physics & Mathematics
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General Physics & Mathematics
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Spectroscopy & Molecular Physics
(AREA)
FR887361D1941-12-091942-10-30Procédé de mesure du temps de pose dans les agrandisseurs
ExpiredFR887361A
(fr)
Procédé de mesure de l'éclairement, et dispositif pour sa mise en application, enparticulier en vue de l'appréciation des temps de pose en photographie