Title:
FOCUS CONTROL DEVICE, LENS DEVICE, AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/176416
Kind Code:
A1
Abstract:
Provided are a focus control device, a lens device, and an imaging device with which a field angle change not intended by a user can be suppressed. A beam splitter (16) splits an optical path of subject light that has passed through an imaging optical system (10) having a variable focal length into a first optical path leading to a first imaging element (31) and a second optical path other than the first optical path. A second imaging element receives the subject light that has travelled through the second optical path and has been pupil divided and outputs a phase difference signal. A control unit (28) executes automatic focus control for driving a focus lens (11) according to phase difference information obtained by performing low-pass filter processing on the phase difference signal. Further, the control unit (28) sets the decreasing degree of a high-frequency component in the processing according to the focal length of the imaging optical system (10).
Inventors:
KOKUBUN HIDEAKI (JP)
Application Number:
PCT/JP2022/000147
Publication Date:
August 25, 2022
Filing Date:
January 05, 2022
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B7/28; G02B7/34; G03B11/00; G03B13/36; G03B15/00; H04N5/232
Domestic Patent References:
| WO2017154366A1 | 2017-09-14 |
Foreign References:
| JP2015034859A | 2015-02-19 | |||
| JP2015228113A | 2015-12-17 | |||
| JP2005303510A | 2005-10-27 | |||
| JP2008085416A | 2008-04-10 | |||
| JP2014146935A | 2014-08-14 |
Attorney, Agent or Firm:
KOH-EI PATENT FIRM, P.C. (JP)
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