Shutter control device

Details Shutter control device Shutter control device

1994-11-30

1996-03-12

Blankenship, Howard B.

354266, G03B 1912

Patent

active

054990700

ABSTRACT:
A shutter control device comprises an exposing unit for effecting an exposure, a signal generator for generating a release signal, a mirror for reflecting the light of a subject toward a view optical system, a mirror driver for shifting the mirror between a first position on a photographing light path and a second position off the photographing light path, a position detector for detecting that the mirror is present in the vicinity of the second position and generating a position signal, a timer for measuring a predetermined time on receiving the release signal and generating a time measurement end signal when the predetermined time elapses; and a controller means for actuating the exposing unit when receiving the time measurement end signal and the position signal.

REFERENCES:
patent: 3683776 (1972-08-01), Ono
patent: 3715964 (1973-02-01), Tenkumo et al.
patent: 3936848 (1976-02-01), Akiyama
patent: 4152058 (1979-05-01), Numata et al.
patent: 4185906 (1980-01-01), Little
patent: 4202615 (1980-05-01), Nemoto
patent: 5092673 (1992-03-01), Hayashi

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