Title:
合焦位置検出装置及び合焦位置検出方法
Document Type and Number:
Japanese Patent JP6799656
Kind Code:
B2
Abstract:
The focusing position detecting device includes contrast evaluation value calculating unit configured to calculate contrast evaluation values from a plurality of image data items obtained by imaging a subject a multiple number of times at a set exposure time while moving a focus lens in an optical axis direction within a search range, focusing position calculating unit configured to calculate a focusing position from focus positions at the time of imaging the subject a multiple number of times and the contrast evaluation values calculated by the contrast evaluation value calculating unit, detection unit configured to detect atmospheric fluctuation, and exposure time setting unit configured to set an exposure time in a case where the detection unit detects the atmospheric fluctuation so as to be longer than an exposure time in a case where the detection unit does not detect the atmospheric fluctuation.
Inventors:
Koichi Tanaka
Zhang Tou
Tetsuya Fujikawa
Zhang Tou
Tetsuya Fujikawa
Application Number:
JP2019185413A
Publication Date:
December 16, 2020
Filing Date:
October 08, 2019
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B7/36; G03B7/093; G03B13/36; H04N5/232
Domestic Patent References:
| JP9284634A | ||||
| JP8223456A | ||||
| JP2012118153A | ||||
| JP2006330160A |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office