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. 02, 1999
Filed:
May. 02, 1995
Applicant:
Inventors:
Kunihiko Yamada, Tokyo, JP;
Masahide Hirasawa, Kanagawa-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348347 ; 348349 ;
Abstract
An image sensing apparatus includes a diaphragm for an image sensing optical system, the aperture of the diaphragm being formed in a shape which is substantially asymmetrical in a horizontal or vertical direction, a in-focus detecting circuit for making a decision as to near focus state, in focus and far focus on the basis of a signal waveform which corresponds to an edge portion of a subject image passed through the diaphragm, and a driving circuit for performing focus adjustment of the image sensing optical system on the basis of an output of the in-focus detecting circuit.