Electro-mechanical shutter system having mechanical latch

Details Electro-mechanical shutter system having mechanical latch Electro-mechanical shutter system having mechanical latch

1975-08-28

1976-11-30

Peters, Jr., Joseph F.

354235, 354247, 354268, G03B 942

Patent

active

039952959

ABSTRACT:
An exposure control system for photographic apparatus utilizing electrically controlled shutter-diaphragm blades and employing a latch, for holding the blades in a light-blocking condition, which is automatically released responsive to actuation of the blades just prior to initiation of an exposure interval during which scene light is passed to the film. In the illustrated embodiment, the blades are initially drawn slightly further in a light-blocking direction from the latched position so as to release the latch just prior to initiation of the exposure interval.

REFERENCES:
patent: 3832722 (1974-08-01), Douglas
patent: 3873987 (1975-03-01), Brauning
patent: 3893134 (1975-07-01), Brauning
patent: 3896458 (1975-07-01), Johnson et al.
patent: 3903538 (1975-09-01), Yoshiyaki

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