Shutter device

Details Shutter device Shutter device

1995-12-26

1997-05-13

Perkey, W. B.

Photography

Camera detail

Shutter

G03B 940

Patent

active

056301910

ABSTRACT:
A mechanism wherein the operation state of a shutter is detectable even with a diaphragm plate, without light shading blades being damaged, is disclosed. The mechanism includes a substrate, a cover plate, and a light blocking blade between the substrate and the cover plate. A diaphragm plate is between the light blocking blade and the substrate or the cover plate. A traveling state detection device uses detection holes to detect the traveling state of the light shading blade at a position corresponding to the traveling state detection device of the diaphragm plate.

REFERENCES:
patent: 4557573 (1985-12-01), Johnson et al.
patent: 5134435 (1992-07-01), Tsuboi et al.
patent: 5220376 (1993-06-01), Tagami
patent: 5371565 (1994-12-01), Matsubara et al.
patent: 5457514 (1995-10-01), Hasuda et al.

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