Photography – With exposure objective focusing means – focusing aid – or... – Optical detail with photoelement system
Reexamination Certificate
2006-09-14
2009-11-24
Perkey, WB (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Optical detail with photoelement system
C396S121000, C396S139000, C356S004010, C356S005100
Reexamination Certificate
active
07623779
ABSTRACT:
A phase difference sensor is arranged toward a target object such that the sensor can rotate at least 180° on its sensor optical axis. As the phase difference sensor rotates, the angle of a sensor viewing field is changed, and the distance to the target object is correctly computed using results measured before and after the change in the angle.
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Arai Toshiharu
Inoue Hideaki
Casio Computer Co. Ltd.
Frishauf Holtz Goodman & Chick P.C.
Hancock Dennis
Perkey WB
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