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:
Dec. 13, 2016
Filed:
Jul. 31, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Yuki Yoshimura, Tokyo, JP;
Koichi Fukuda, Tokyo, JP;
Junichi Saito, Kawasaki, JP;
Hideaki Takamiya, Yokohama, JP;
Yoshihito Tamaki, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Signals of pixels are acquired from an image sensor in which a first pixel, a second pixel, and an imaging pixel are arranged, the first pixel receiving light flux that is restricted to light flux passing through a first portion of a pupil area of an imaging optical system, the second pixel receiving light flux that is restricted to light flux passing through a second portion that is different from the first portion of the pupil area, and the imaging pixel being different from the first and second pixels. Based on the acquired signals, estimated signals at a position at which the first and second pixel is not arranged are estimated. A defocus amount of the imaging optical system is calculated based on evaluation values obtained based on the estimated signals and the signals from the first and second pixels.