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DURST SpA
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Publication of FR1231925ApublicationCriticalpatent/FR1231925A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
G03B7/081—Analogue circuits
G03B7/083—Analogue circuits for control of exposure time
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR799244A1958-07-071959-07-03Régulateur automatique d'exposition pour caméras photographiques et appareils cinématographiques
ExpiredFR1231925A
(fr)