Electric shutter

Details Electric shutter Electric shutter

1974-11-12

1976-04-27

Hix, L. T.

354 38, 354 43, 354 51, 354 60R, 354230, G03B 714

Patent

active

039538656

ABSTRACT:
An electric shutter comprising a diaphragm-aperture controlling cam plate which is started by shutter release operation, an electro-magnet capable of stopping the movement of said cam plate, and an RC delay circuit capable of controlling the energizing time of said electromagnet, in order (1) that the diaphragm aperture can be automatically set according to brightness of the object to be photographed and (2) that exposure can be carried out at a proper shutter speed taking the setting of the diaphragm aperture into consideration.

REFERENCES:
patent: 3626825 (1971-12-01), Years

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