Photography – With exposure objective focusing means – focusing aid – or... – Lens drive circuit or motor structure
Reexamination Certificate
2007-07-24
2009-12-08
Perkey, W. B. (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Lens drive circuit or motor structure
C396S147000, C348S346000
Reexamination Certificate
active
07630623
ABSTRACT:
An optical apparatus includes a control unit configured to perform an operation for moving a focusing lens at a first speed to detect a first position corresponding to an in-focus state and then moving the focusing lens at a second speed lower than the first speed in forward and backward directions across the first position to detect a second position corresponding to an in-focus state, and an output unit configured to output information indicating an in-focus state of the focusing lens recognizable by a user. The output unit outputs the information in response to the control unit detecting the first position.
REFERENCES:
patent: 5689741 (1997-11-01), Hozumi et al.
patent: 6750914 (2004-06-01), Sannoh et al.
patent: 2003/0189662 (2003-10-01), Matsuda
patent: 2004/0057712 (2004-03-01), Sato et al.
patent: 2006/0008265 (2006-01-01), Ito
patent: 2006/0029381 (2006-02-01), Onozawa
patent: 2006/0055814 (2006-03-01), Okawa et al.
patent: 6-205258 (1994-07-01), None
patent: 2002-311328 (2002-10-01), None
patent: 2004-333828 (2004-11-01), None
Canon Kabuhsiki Kaisha
Canon U.S.A. Inc. I.P. Division
Hancock Dennis
Perkey W. B.
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