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:
Jul. 15, 1997
Filed:
Feb. 14, 1994
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
396 86 ; 348345 ; 396 79 ; 396 85 ;
Abstract
An optical apparatus comprising a movable optical member, a driving part for causing the optical member to move, a manual operation member capable of being operated to be moved, a first detecting part for detecting at least an operating speed of the manual operation member, a second detecting part for detecting a focal length of the optical apparatus and a control part for causing the driving part to act on the basis of an output of the first detecting part and being arranged to receive an output of the second detecting part and to vary an action of the driving part according to a change of the focal length.