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:
Apr. 09, 2013
Filed:
Jul. 12, 2010
Applicant:
Moriyasu Kanai, Saitama, JP;
Inventor:
Moriyasu Kanai, Saitama, JP;
Assignee:
Pentax Ricoh Imaging Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A focus detection device, which detects a defocus amount based on a phase difference between a pair of object images that are obtained by pupil division and projected onto a pair of areas on a line sensor, includes a parallel line sensor having two line sensor arrays arranged adjacently in parallel, and a correction calculator which corrects the defocus amount according to a phase difference between output signals of the two line sensor arrays of the parallel line sensor.