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Publication of FR690993ApublicationCriticalpatent/FR690993A/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
G03B9/00—Exposure-making shutters; Diaphragms
G03B9/08—Shutters
G03B9/46—Flap shutters pivoting about axis in plane of flap
G03B9/50—Louvre type
G—PHYSICS
G02—OPTICS
G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
G02B5/00—Optical elements other than lenses
G02B5/005—Diaphragms
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Physics & Mathematics
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General Physics & Mathematics
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Optics & Photonics
(AREA)
FR690993D1930-03-031930-03-03Dispositif pour actionner à très grande vitesse un obturateur d'objectif photographique
ExpiredFR690993A
(fr)