Photography – Camera detail – Shutter
Reexamination Certificate
2008-05-20
2008-05-20
Perkey, W. B. (Department: 2862)
Photography
Camera detail
Shutter
C396S493000
Reexamination Certificate
active
11178539
ABSTRACT:
Disclosed is a light amount adjusting apparatus for an image pickup apparatus which is capable of reducing the force with which a plate member and a blade member are held in close contact with each other and driving the blade member smoothly even in a high-humidity condition. The light amount adjusting apparatus includes a base plate5having an opening5a, a blade member1movable within a range including a position where the blade member overlaps the opening5ain a light axis direction and restricting the amount of light passing through the opening5aby overlapping the opening5a, and a plate member2adjacent to the blade member1and having a cut portion2aat a position where the plate member overlaps the blade member1in the light axis direction in a state in which the blade member1is at a predetermined position.
REFERENCES:
patent: 4346977 (1982-08-01), Ooba
patent: 4825236 (1989-04-01), Hashimoto et al.
patent: 5502524 (1996-03-01), Bovenzi et al.
patent: 6099171 (2000-08-01), Takahashi
patent: 6554502 (2003-04-01), Naganuma
Chinese Office Action dated Jan. 18, 2008 issued in the counterpart Chinese Patent Application No. 2005100887317 with an English translation.
Canon Kabushiki Kaisha
Cowan Liebowitz & Latman P.C.
Perkey W. B.
Suthar Rishi S
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