FR902165A - Dispositif de réglage automatique des diaphragmes des appareils photographiques avec objectifs montés sur un support-revolver
- Google Patents
Dispositif de réglage automatique des diaphragmes des appareils photographiques avec objectifs montés sur un support-revolver
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Zeiss Ikon AG
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Zeiss Ikon AG
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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
G03B7/085—Analogue circuits for control of aperture
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FR902165D1943-04-031944-02-23Dispositif de réglage automatique des diaphragmes des appareils photographiques avec objectifs montés sur un support-revolver
ExpiredFR902165A
(fr)