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. 05, 2021
Filed:
Jun. 14, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Koichi Fukuda, Tokyo, JP;
Yu Inagaki, Kawasaki, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An apparatus includes a generation unit configured to generate a plurality of respective focus detection signals corresponding to different pupil areas by using pixel signals acquired by pixels, and a detection unit configured to calculate an image deviation amount based on the plurality of focus detection signals and detect a defocus amount from the image deviation amount and a conversion coefficient. The detection unit calculates the conversion coefficient based on a pupil eccentric amount of an image sensor, an incident pupil distance of the image sensor, and opening information about a plurality of frames in an imaging optical system.