Imaging device and in-focus control method

Details Imaging device and in-focus control method Imaging device and in-focus control method

2008-08-25

2010-10-26

Blackman, Rochelle-Ann J (Department: 2862)

Photography

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

Processing circuit

C396S123000, C348S353000, C348S356000, C250S201700

Reexamination Certificate

active

07822334

ABSTRACT:
An imaging device includes an imaging unit that obtains an image signal relating to a subject, a driving unit that drives a focus lens, a first detecting unit that performs focus detection based on a contrast detection method to detect an in-focus position of the focus lens, a second detecting unit that performs focus detection based on a phase difference detection method, while the focus lens is being driven toward the in-focus position, to detect a provisional in-focus position of the focus lens, and an in-focus control unit that controls the driving unit to drive the focus lens to pass through the provisional in-focus position and then return to the in-focus position. Focus detection information is obtained at least for a given range of positions, and is stored in a predetermined storage unit. The in-focus position is detected based on the stored focus detection information.

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patent: 2006/0061676 (2006-03-01), Suda
patent: 2006/0165403 (2006-07-01), Ito
patent: 1 617 652 (2006-01-01), None
patent: 2003-7944 (2003-01-01), None
U.S. Appl. No. 12/210,589, filed Sep. 15, 2008, Fujii.
U.S. Appl. No. 12/210,560, filed Sep. 15, 2008, Fujii.

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