Title:
FOCUS CONTROL DEVICE, LENS DEVICE, IMAGING DEVICE, FOCUS CONTROL METHOD, AND FOCUS CONTROL PROGRAM
Document Type and Number:
WIPO Patent Application WO/2017/175579
Kind Code:
A1
Abstract:
Provided are a focus control device, a lens device, an imaging device, a focus control method, and a focus control program capable of improving the accuracy of focus control by calculating a phase difference suitable for a subject. A system control unit 11 comprises: a summed correlation operation unit 11A for executing correlation operation between a first signal group and a second signal group acquired after vertical addition; a non-summed correlation operation unit 11B for executing correlation operation between detection signal groups before vertical addition; a selection unit 11C for calculating a coincidence degree between first information resulting from the correlation operation via the summed correlation operation unit 11A and second information resulting from the correlation operation via the non-summed correlation operation unit 11B, and selecting either the first information or the second information on the basis of the coincidence degree; and a lens drive unit 11E for driving a focus lens on the basis of the information selected by the selection unit 11C.
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Inventors:
TANAKA KOICHI (JP)
Application Number:
PCT/JP2017/011240
Publication Date:
October 12, 2017
Filing Date:
March 21, 2017
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B7/34; G02B7/28; G03B13/36; H04N5/232
Domestic Patent References:
| WO2013047160A1 | 2013-04-04 | |||
| WO2015122061A1 | 2015-08-20 | |||
| WO2015141084A1 | 2015-09-24 |
Foreign References:
| JP2012103285A | 2012-05-31 | |||
| JP2006145862A | 2006-06-08 |
Attorney, Agent or Firm:
KOH-EI PATENT FIRM, P.C. et al. (JP)
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