Shutter mechanism

Details Shutter mechanism Shutter mechanism

1975-02-26

1976-08-03

Adams, Jr., Russell E.

354235, 354250, 354252, 354258, G03B 908

Patent

active

039732690

ABSTRACT:
An electrically controlled shutter device for a photograhic camera. The shutter device includes a shutter element which is mounted for movement for opening and closing a light admitting aperture of the camera. A drive mechanism causes the movement of the shutter element between its respective positions. An external trigger control provides for initiation of the opening and closing of the aperture during the exposure operation. A position monitoring mechanism is associated with the shutter element for providing a signal in dependence upon the shutter element being located in a predetermined position. A control mechanism is coupled to the output of the position monitoring mechanism and controls the operation of the shutter device as a function of the signal provided by the position monitoring mechanism and as a function of the signals from the external trigger control.

REFERENCES:
patent: 3595153 (1971-07-01), Saul
patent: 3704659 (1972-12-01), Low et al.
patent: 3791278 (1974-02-01), Biber et al.

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