Title:
FOCUS CONTROL DEVICE, LENS DEVICE, AND IMAGING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/176469
Kind Code:
A1
Abstract:
Provided are a focus control device, a lens device, and an imaging apparatus, all of which being capable of suppressing a change, in the angle of view, not intended by a user. A beam splitter (16) divides an optical path of object light having passed through an imaging optical system (10) in which the focal distance is variable, into a first optical path toward a first imaging element (31) and a second optical path other than the first optical path. A second imaging element (27) receives the object light which has propagated through the second optical path and which has undergone pupil-division, and outputs a phase difference signal. A control unit (28) executes, in a first state where the focal distance of the imaging optical system (10) is equal to or more than a threshold value, automatic focus control for driving a focus lens (11) on the basis of the phase difference signal. In a second state where the focal distance of the imaging optical system (10) is less than the threshold value, the control unit (28) does not execute the automatic focus control, and sets the movable range (212) of the focus lens (11) in accordance with the phase difference signal acquired in the first state.
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Inventors:
OKAMOTO SATOSHI (JP)
Application Number:
PCT/JP2022/001232
Publication Date:
August 25, 2022
Filing Date:
January 14, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B7/34; G02B7/28; G03B13/36; H04N5/232
Foreign References:
| JP2002258147A | 2002-09-11 | |||
| JP2014021262A | 2014-02-03 | |||
| JP2013088766A | 2013-05-13 |
Attorney, Agent or Firm:
KOH-EI PATENT FIRM, P.C. (JP)
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