Blade type focal plane shutter

Details Blade type focal plane shutter Blade type focal plane shutter

1982-09-09

1984-05-08

Mathews, A. A.

354152, G03B 936, G03B 1912

Patent

active

044471424

ABSTRACT:
A blade type focal plane shutter wherein an exposure aperture is made to be always covered with a front blade group and rear blade group in a mirror-down state by operatively connecting a quick return mirror and a blade opening and closing controlling mechanism with each other in order to obtain a high light shielding property with the front blade group and rear blade group except when an exposure is made.

REFERENCES:
patent: 3903539 (1975-09-01), Kitai et al.
patent: 4096505 (1978-06-01), Onda et al.
patent: 4114174 (1978-09-01), Onda et al.
patent: 4145132 (1979-03-01), Onda et al.
patent: 4313658 (1982-02-01), Sugiura et al.

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