Camera, device for capturing object image, automatic focus...

Details Camera, device for capturing object image, automatic focus... Camera, device for capturing object image, automatic focus...

2005-04-26

2005-04-26

Perkey, W. B. (Department: 2851)

Photography

With exposure objective focusing means, focusing aid, or...

Processing circuit

C396S133000, C348S345000, C250S201200

Reexamination Certificate

active

06885819

ABSTRACT:
System controller (10) seeks a focus adjusting evaluating value which is indicative of focus adjusting state as a criterion from object image information, and searches a focus adjusted position where focus adjusting evaluating value becomes the most appropriate and drives the focus operating means to the focus adjusted position to perform a focus adjusting by a focus adjusting scan to obtain a plurality of focus adjusting evaluating value by operating the focus adjusting evaluating value detecting means while driving focusing lens (1a) in at lease one way of continuous way or intermittent way which varies focus adjusting state of the object image.System controller (10) shifts a scan starting point from an initial locating position Po of the focusing lens (1a) in a first predetermined amount of distance in a predetermined direction then initiate scan from the initial locating position toward an opposite direction to the predetermined direction.

REFERENCES:
patent: 4841325 (1989-06-01), Hoshino, et al.
patent: 5075777 (1991-12-01), Murata
patent: 20010010556 (2001-08-01), Sugimoto et al.
patent: 0 520 764 (1992-12-01), None
U.S. patent application Ser. No. 10/367,871, Shinohara, filed Feb. 19, 2003.
U.S. patent application Ser. No. Shinohara et al., filed Aug. 8, 2003.
U.S. patent application Ser. No. 10/641,050, Shinohara et al., filed Aug. 15, 2003.

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