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:
Sep. 08, 2015
Filed:
Jul. 16, 2010
Souichi Ueta, Yokohama, JP;
Yoshiyuki Suzuki, Tokyo, JP;
Souichi Ueta, Yokohama, JP;
Yoshiyuki Suzuki, Tokyo, JP;
NIKON CORPORATION, Tokyo, JP;
Abstract
A focusing device including: an optical system that includes a focusing lens; an image sensor that captures a subject image formed via the optical system and outputs an image signal containing a plurality of color components; an edge detection unit that detects an edge in correspondence to each color component among the plurality of color components contained in the image signal; a differential value calculation unit that calculates a differential value of an edge strength of the edge detected by the edge detection unit, in correspondence to the each color component; and a decision-making unit that determines a moving direction along which the focusing lens is to move for purposes of focus adjustment of the optical system based upon the differential value calculated by the differential value calculation unit.