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. 30, 2008
Filed:
Apr. 08, 2005
Yasuo Suda, Yokohama, JP;
Yasuo Suda, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A focus detection system including a sensor unit including a plurality of photoelectric conversion elements and a focus detection unit for performing focus adjustment using a pair of signals output from the sensor unit. In the sensor unit, an aperture corresponding to each of the photoelectric conversion elements positioned in the outer area is smaller than an aperture corresponding to each of the photoelectric conversion elements positioned in the central area. In the focus detection unit, the pair of signals is formed by pencils of rays passing through different regions of an exit pupil of an imaging lens.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile