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:
May. 27, 1986
Filed:
Sep. 27, 1983
Applicant:
Inventors:
Naoya Kaneda, Kanagawa, JP;
Masamichi Toyama, Tokyo, JP;
Susumu Kozuki, Tokyo, JP;
Yutaka Kohtani, Kanagawa, JP;
Akihiro Fujiwara, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; G01J / ; G01J / ; G03B / ;
U.S. Cl.
CPC ...
358227 ; 250204 ; 354402 ; 354403 ; 250201 ;
Abstract
Disclosed is an automatic focus control system including an active type automatic focusing device. The system further includes detecting apparatus which produces a characteristic signal when detecting that an image forming optical apparatus is in an out-of-focus condition, and control means which renders the automatic focusing device in an inoperative condition when the optical apparatus reaches an in-focus condition. It also renders the focusing device in an operative condition in response to the characteristic signal produced by the detecting apparatus.