Motor driven shutter having focus adjusting and stop setting mea

Details Motor driven shutter having focus adjusting and stop setting mea Motor driven shutter having focus adjusting and stop setting mea

1994-11-09

1996-09-24

Adams, Russell E.

3542711, 354439, 354440, G03B 700

Patent

active

055595693

ABSTRACT:
A motor driven shutter by which various operational modes are freely selectable and photographing timing is shortened includes springs and a motor arranged in a manner freely selectable as driving forces for opening and closing the shutter and are combined or selected corresponding to the operational mode. The photographing timing is shortened by operating in parallel an F number setting operation and a focus adjusting operation. Various modes may be selected according to the photographing purpose, and the photographing timing may be shortened.

REFERENCES:
patent: 3176600 (1965-04-01), Tokar
patent: 4107714 (1978-08-01), Raab
patent: 4338011 (1982-07-01), Pizzuti
patent: 4710013 (1987-12-01), Wong

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