Photography – With exposure objective focusing means – focusing aid – or... – Mechanical mechanism for displacement of exposure objective
Reexamination Certificate
2011-04-26
2011-04-26
Laballe, Clayton E (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Mechanical mechanism for displacement of exposure objective
C359S823000
Reexamination Certificate
active
07933511
ABSTRACT:
A lens barrel capable of reducing the radial size thereof while maintaining the degree of freedom in layout of a shutter and a anti-shake mechanism. A barrier drive ring includes first and second rotation-transmitting protrusions axially protruding toward an imaging area and parallel to and substantially opposed to each other. An image pickup element-holding member includes a first and second cam contact section which are brought into contact with the first and second rotation-transmitting protrusion, when the lens barrel is retracted. Rotation transmission to the barrier drive ring is performed in a varying manner first via a contact between the first rotation-transmitting protrusion and first cam contact section, then via contacts between the first and second rotation-transmitting protrusions and the first and second cam contact sections, and finally via a contact between the second rotation-transmitting protrusion and the second cam contact section.
REFERENCES:
patent: 6312168 (2001-11-01), Naruse et al.
patent: 6520691 (2003-02-01), Nomura et al.
patent: 6851871 (2005-02-01), Masuda
patent: RE39752 (2007-07-01), Nomura et al.
patent: 2001/0024573 (2001-09-01), Nomura et al.
patent: 2004/0027476 (2004-02-01), Masuda
patent: 2001-215562 (2001-08-01), None
patent: 2004-069991 (2004-03-01), None
Canon Kabushiki Kaisha
Cowan Liebowitz & Latman P.C.
LaBalle Clayton E
Parker Autumn
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