Photography – Camera detail – Lens mount
Reexamination Certificate
2005-05-10
2008-10-14
Perkey, W. B. (Department: 2862)
Photography
Camera detail
Lens mount
C396S535000, C348S360000, C348S376000
Reexamination Certificate
active
07435020
ABSTRACT:
A camera system according to the present invention includes an image pickup device having an imaging surface of an imaging range with a predetermined aspect ratio, the image circle being set larger than the imaging range to include the imaging range therein, a mount portion to which the interchangeable lens is mounted, and an opening portion having an opening for allowing luminous flux from the interchangeable lens to pass through, being located at a position spaced from the imaging surface by a predetermined distance, wherein the size of the opening of the opening portion is equal to or larger than a square formed by connecting ends of segments tilted by an angle θ with respect to an optical axis diagonally from four corners of the imaging range and extended to the opening of the opening portion, and the angle θ satisfies:in-line-formulae description="In-line Formulae" end="lead"?12 degrees≦θ,in-line-formulae description="In-line Formulae" end="tail"?wherein a distance between the opening of the opening portion and the imaging surface, herein referred to as flange back (FB), is:in-line-formulae description="In-line Formulae" end="lead"?35 mm≦FB≦50 mm.in-line-formulae description="In-line Formulae" end="tail"?
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Kawai Sumio
Ogata Yasuzi
Olympus Corporation
Perkey W. B.
Volpe and Koenig P.C.
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