Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polaroid Corp
International Polaroid Corp
Original Assignee
Polaroid Corp
International Polaroid Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polaroid Corp, International Polaroid CorpfiledCriticalPolaroid Corp
Priority to FR978336ApriorityCriticalpatent/FR1400780A/fr
Application grantedgrantedCritical
Publication of FR1400780ApublicationCriticalpatent/FR1400780A/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)
FR978336A1964-06-151964-06-15Appareil de détermination du temps de pose pour obturateur d'appareil photographique
ExpiredFR1400780A
(fr)
Perfectionnements à un dispositif pour régler automatiquement le pose-mètre incorporé d'un appareil photographique en fonction de la sensibilité du film