Quantity-of-light adjusting device

Details Quantity-of-light adjusting device Quantity-of-light adjusting device

2005-02-08

2005-02-08

Gray, David M. (Department: 2851)

Photography

Having photocell at specific position within camera

Photocell responsive to adjacent illuminator

C396S449000, C396S493000

Reexamination Certificate

active

06853810

ABSTRACT:
A quantity-of-light adjusting device comprises a first quantity-of-light adjusting blade and a second quantity-of-light adjusting blade which move to adjust quantity of light, and a detecting member which detects that the first quantity-of-light adjusting blade is at a predetermined location while also detecting that the second quantity-of-light adjusting member has moved to the predetermined location following the first quantity-of-light adjusting blade moving from the predetermined location, so that the state of adjustment of the aperture with the quantity-of-light adjusting means can be detected by a single detecting member.

REFERENCES:
patent: 5043753 (1991-08-01), Nakamori
patent: 6072958 (2000-06-01), Hasuda
patent: 6374049 (2002-04-01), Fujinaga
patent: 6-281995 (1994-10-01), None
patent: 2627168 (1997-04-01), None
patent: 2909629 (1999-04-01), None
patent: 2001-42382 (2001-02-01), None

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