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:
Jan. 21, 2014
Filed:
May. 04, 2010
Yoshiaki Komuro, Kanagawa, JP;
Yoshiaki Komuro, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A focus detection apparatus includes first-type and second-type pixels and an image-formation-state detector. Each first-type pixel includes a photoelectric converter that receives light from an image-pickup optical system and first and second optical members arranged on an optical path from the optical system to the photoelectric converter and having different refractive indices, and outputs a first charge signal corresponding to an amount of light received by the photoelectric converter. Each second-type pixel includes the photoelectric converter and the first and second optical members arranged such that a positional relationship relative to the photoelectric converter differs from that in each first-type pixel, and outputs a second charge signal corresponding to an amount of light received by the photoelectric converter. The detector detects an image formation state of the image-pickup optical system on the basis of the first and second charge signals.