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:
Aug. 30, 2011
Filed:
May. 05, 2010
Kyoji Sekiguchi, Utsunomiya, JP;
Shigeaki Ono, Tokyo, JP;
Masao Shikaumi, Tokyo, JP;
Motoya Takai, Nagareyama, JP;
Toshifumi Masaki, Tokyo, JP;
Kyoji Sekiguchi, Utsunomiya, JP;
Shigeaki Ono, Tokyo, JP;
Masao Shikaumi, Tokyo, JP;
Motoya Takai, Nagareyama, JP;
Toshifumi Masaki, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A fundus camera includes an observation photographing unit having a focusing lens to perform focusing of an imaging unit on a fundus of a subject's eye, a lens driving unit configured to drive the focusing lens in an optical axis direction, and a focusing control unit configured to calculate a focusing evaluation value based on image information of a predetermined area of a fundus image captured by the observation photographing unit, and drive the focusing lens based on the focusing evaluation value, thereby performing focusing, wherein the focusing control unit moves the focusing lens from a previous photographing position of the focusing lens by a predetermined moving amount, and then performs the focusing.