Focal-plane shutter device

Details Focal-plane shutter device Focal-plane shutter device

1994-02-15

1994-12-06

Hayes, Monroe H.

354248, G03B 940

Patent

active

053715659

ABSTRACT:
The present invention aims at improving the durability of a very high-speed shutter exceeding 1/8000 sec and further attaining a very high shutter speed even with sectors composed of a material exhibiting a low rigidity. For this purpose, a focal plane shutter device comprises: first and second blinds each constructed of a plurality of sectors; and a light shielding plate having an opening and an intermediate plate disposed between the first blind and the second blind. The first and second blinds are run in the facial direction of the light shielding plate so as to cover and expose the opening. The light shielding plate and the intermediate plate are bonded, or a shock absorbing member is interposed between these two plates.

REFERENCES:
patent: 1929626 (1933-10-01), De Forest
patent: 2196358 (1940-04-01), Heinisch
patent: 4162829 (1979-07-01), Cook et al.
patent: 4493544 (1985-01-01), Uematsu
patent: 4515469 (1985-05-01), Blaschek
patent: 5037195 (1991-08-01), Clairmont et al.

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