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EMILE-VICTOR PREVOST
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EMILE-VICTOR PREVOST
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Application filed by EMILE-VICTOR PREVOSTfiledCriticalEMILE-VICTOR PREVOST
Application grantedgrantedCritical
Publication of FR16414EpublicationCriticalpatent/FR16414E/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
G01J1/48—Photometry, e.g. photographic exposure meter using chemical effects
G01J1/50—Photometry, e.g. photographic exposure meter using chemical effects using change in colour of an indicator, e.g. actinometer
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Physics & Mathematics
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General Physics & Mathematics
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Spectroscopy & Molecular Physics
(AREA)
FR16414D1908-08-221912-08-12Appareil pour mesurer et enregistrer l'intensité de la lumière, et tables pour son application à la photographie
ExpiredFR16414E
(fr)
Boite portative servant à renfermer les écrans transparents et opaques faits par procédés chimiques destinés à l'usage cinématographique et au besoin servir de fonds pour la photographie