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. 19, 1985
Filed:
Sep. 06, 1983
Applicant:
Inventors:
Nozomu Kitagishi, Inagi, JP;
Akira Tajima, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354406 ;
Abstract
A focusing device in which, in a condition in which the focus detecting operation is impossible, when the set focus position of the picture-taking lens is on the short distance focus side, the lens is forcibly shifted to the long distance focus side and when the set focus position is on the long distance focus side, the lens is shifted to the short distance focus side, whereby the device can quickly get away from the condition in which the focus detecting operation is impossible.