Title:
撮像装置及びその制御方法、プログラム、記憶媒体
Document Type and Number:
Japanese Patent JP6592289
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of improving accuracy of positioning a lens to a focus position while preventing cost of the imaging apparatus from rising.SOLUTION: The imaging apparatus comprises: an imaging unit for imaging a subject; a focus state detection unit for detecting a focus state of a photographic lens on the basis of an output signal from the imaging unit; a drive unit for driving a focus lens which adjusts the focus state of the photographic lens; a position detection unit for detecting a position of the focus lens; an amplification unit for amplifying the output signal of the position detection unit; a control unit for controlling the drive unit so as to drive the focus lens in a direction of decreasing deviation between output of the amplification unit and a target value of the position of the focus lens; and a change unit for changing an amplification factor in the amplification unit on the basis of the focus state of the photographic lens detected by the focus state detection unit.SELECTED DRAWING: Figure 1
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Inventors:
Koichi Washisu
Yasushi Yamamoto
Yasushi Yamamoto
Application Number:
JP2015147078A
Publication Date:
October 16, 2019
Filing Date:
July 24, 2015
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B7/28; G02B7/08; G02B7/34; G03B13/36; H04N5/232
Domestic Patent References:
| JP2009244375A | ||||
| JP2014202862A | ||||
| JP2012237769A | ||||
| JP2012226063A | ||||
| JP2014035508A | ||||
| JP2008242442A | ||||
| JP2006058512A |
Foreign References:
| US20060197865 |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu