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:
Feb. 01, 2005
Filed:
Mar. 16, 2001
Masahide Hirasawa, Kanagawa-ken, JP;
Tatsuya Yamazaki, Tokyo, JP;
Hiroto Ohkawara, Ibaraki-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An automatic focus adjusting device in which a distance measuring area is set from a plurality of distance measuring areas including a first distance measuring area and a second distance measuring area which differs in size from the first distance measuring area. A state of focus is discriminated in a distance measuring area before a focus adjusting operation is started by driving an optical element for focus adjustment when the optical element is in an in-focus state, and on the basis of the discrimination, a distance measuring area to be used after the focus adjusting operation is started is selected from the first distance area and the second distance area.