Title:
FOCUS CONTROL DEVICE, FOCUS CONTROL METHOD, FOCUS CONTROL PROGRAM, LENS DEVICE, IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/057071
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a focus control device, focus control method, focus control program, lens device and imaging device, with which it is possible to improve focus accuracy using a phase difference autofocus system. A system control unit 11 performs one of two following processes selectively on the basis of a first phase difference amount and a second phase difference amount. A process in which a first correlation value is determined, based on a signal group outputted from the phase difference detection pixel 52A of the autofocus area 53 and a signal group outputted from the phase difference detection pixel 52B, and a second correlation value is determined between the signal group outputted from the phase difference detection pixel 52A contained in the divided area 53s, and the signal group outputted from the phase difference detection pixel 52B, the first phase difference amount is detected from the first correlation value, the second phase difference amount is detected for each divided area 53s from the second correlation value, and the target position for the focus lens is determined on the basis of a first phase difference amount; and a process for determining the target position of a focus lens on the basis of a second phase difference amount.
Inventors:
SAKURABU HITOSHI (JP)
Application Number:
PCT/JP2016/077506
Publication Date:
April 06, 2017
Filing Date:
September 16, 2016
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B7/34; G02B7/28; G03B13/36; H04N5/232
Foreign References:
| JP2015087511A | 2015-05-07 | |||
| JP2013222016A | 2013-10-28 |
Attorney, Agent or Firm:
TAKAMATSU Takeshi et al. (JP)
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