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Tubascope S A
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Tubascope S A
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Application filed by Tubascope S AfiledCriticalTubascope S A
Application grantedgrantedCritical
Publication of FR798714ApublicationCriticalpatent/FR798714A/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
G03B7/087—Analogue circuits for control of both exposure time and aperture
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR798714D1935-12-051935-12-05Procédé et dispositifs pour le réglage automatique d'appareils photographiques
ExpiredFR798714A
(fr)