Title:
焦点検出装置及び方法、及び撮像装置
Document Type and Number:
Japanese Patent JP6806471
Kind Code:
B2
Abstract:
A focus detection apparatus comprises: a determination unit that determines whether a flicker light source is included in focus detection areas; a plurality of sensors for focus detection that correspond to the focus detection areas, and accumulate electric charges corresponding to received light; and a controller that controls accumulation in the sensors. The controller monitors a signal that is based on electric charges accumulated in the sensors, and performs first control for stopping accumulation in a sensor in which the signal has exceeded a predetermined threshold value, and second control for stopping accumulation in a sensor which continues accumulation of electric charges when a maximum accumulation period has reached. The controller sets the maximum accumulation period based on a determination result by the determination unit and the accumulation period of a first sensor in which the first control is performed first.
Inventors:
Kei Ichinomiya
Application Number:
JP2016120205A
Publication Date:
January 06, 2021
Filing Date:
June 16, 2016
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B7/34; G03B13/36; G03B15/00; H04N5/232
Domestic Patent References:
| JP2010160281A | ||||
| JP2015142201A | ||||
| JP2012060370A | ||||
| JP2015111252A | ||||
| JP2003280063A | ||||
| JP2015210283A | ||||
| JP2011055427A | ||||
| JP2003244519A |
Attorney, Agent or Firm:
Yasunori Otsuka
Yasuhiro Otsuka
Shiro Takayanagi
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Yasuhiro Otsuka
Shiro Takayanagi
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu