Patent Number: 7,822,334

Title: Imaging device and in-focus control method

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.

Inventors: Ono; Riichi (Osaka, JP), Fujii; Shinichi (Osaka, JP), Ito; Tomoomi (Hyogo, JP)

Assignee: Sony Corporation

International Classification: G03B 3/00 (20060101); G03B 13/00 (20060101); H04N 5/232 (20060101); G02B 7/04 (20060101)

Expiration Date: 2018-10-26 0:00:00