The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 2017
Filed:
Dec. 07, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Hirohito Kai, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A focus detection apparatus includes a focus detection unit configured to detect a focus state in each of a plurality of focus detection regions, an acquisition unit configured to acquire an adjustment value used for adjustment of a detection result, for each of the focus detection regions, and a control unit configured to switch between a first mode and a second mode based on focus states detected in the focus detection regions. In the first mode, the acquisition unit acquires the adjustment values for the focus detection regions, based on a focus state in a specific first focus detection region. In the second mode, the acquisition unit acquires the adjustment value for each of the focus detection regions, based on a focus state detected in each of the focus detection regions.