Television – Camera – system and detail – Optics
Reexamination Certificate
2011-03-22
2011-03-22
Whipkey, Jason (Department: 2622)
Television
Camera, system and detail
Optics
Reexamination Certificate
active
07911527
ABSTRACT:
A focusing apparatus according to an aspect of the present invention comprises: an image pickup device which obtains an image signal of a subject that is captured by an image capturing device, wherein the image capturing device incorporates a focus optical system therein; a search interval calculating device which acquires contrast characteristics that are obtained for a subject of a predetermined spatial frequency at a predetermined focal length and calculates a search interval in capturing of an image based on the contrast characteristics; a focus evaluation value acquiring device which moves a focus lens to a detecting point for each search interval in a predetermined searching range and acquires a focus evaluation value at each detecting point from the image signal; and a focus detecting device which detects a focus position by using the focus evaluation value at each detecting point that is acquired by the focus evaluation value acquiring device.
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patent: 7228069 (2007-06-01), Sun
patent: 2006/0203118 (2006-09-01), Hirai
patent: 2007/0126917 (2007-06-01), Ohta
patent: 2000-338387 (2000-12-01), None
patent: 2004-325517 (2004-11-01), None
patent: 2006-227605 (2006-08-01), None
FUJIFILM Corporation
Sughrue & Mion, PLLC
Whipkey Jason
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