Shutter device and camera equipped with the same

Details Shutter device and camera equipped with the same Shutter device and camera equipped with the same

1998-03-06

1999-08-17

Perkey, W. B.

Photography

With power supply detail

396466, G03B 726, G03B 908

Patent

active

059406402

ABSTRACT:
A shutter device having a first light blocking structure arranged to initiate an exposure and a second light blocking structure arranged to terminate the exposure, includes a first energy storage element arranged to store electric energy for causing the first light blocking structure to start operating, a second energy storage element arranged to store electric energy for causing the second light blocking structure to start operating, and a charging control circuit arranged to effect control of charging of the first energy storage element and the second energy storage element, wherein the charging control circuit varies the control of charging in accordance with a set exposure time.

REFERENCES:
patent: 3726199 (1973-04-01), Alfredsson et al.
patent: 3953867 (1976-04-01), Kondo
patent: 3971053 (1976-07-01), Maida
patent: 4129370 (1978-12-01), Ishiguro et al.

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