Photography – Camera detail – Diaphragm
Reexamination Certificate
2008-02-15
2010-11-16
Perkey, W. B. (Department: 2862)
Photography
Camera detail
Diaphragm
C396S505000
Reexamination Certificate
active
07832950
ABSTRACT:
A fixed aperture and a fixed shaft are formed in a fixed member. A drive shaft is formed in a driving member. A fixed shaft hole and a drive shaft hole are formed in a plurality of diaphragm blades, and the plurality of blades is connected to the fixed shaft and the drive shaft. An aperture diameter of a variable aperture AP which is an aperture zone formed by the plurality of diaphragm blades is controlled by rotating relatively the driving member with respect to the fixed member. Here, the diaphragm blades are disposed in a plurality of layers, and a part of) the diaphragm blades belonging to an adjacent layer are disposed to be overlapping with respect to an optical axis direction.
REFERENCES:
patent: 1302359 (1919-04-01), Garbutt
patent: 1678119 (1928-07-01), Klein
patent: 3136236 (1964-06-01), Hartl
patent: 3715965 (1973-02-01), Alfredsson
patent: 5926663 (1999-07-01), Suzuki
patent: 5999752 (1999-12-01), Ueyama et al.
patent: 6867932 (2005-03-01), Noguchi
patent: 2004/0240879 (2004-12-01), Negishi et al.
patent: 2006/0033974 (2006-02-01), Sato
patent: 1 591 828 (2005-11-01), None
patent: 2 621 681 (1989-04-01), None
patent: 2003-005248 (2003-01-01), None
patent: 2004-37861 (2004-02-01), None
patent: WO 97/05423 (1997-02-01), None
Fenwick Warren K
Olympus Corporation
Perkey W. B.
Scully , Scott, Murphy & Presser, P.C.
LandOfFree
Iris diaphragm mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Iris diaphragm mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Iris diaphragm mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4174286