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:
Mar. 21, 2000
Filed:
Dec. 15, 1997
Applicant:
Inventor:
Seiichi Kashiwaba, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359823 ; 359697 ; 359700 ; 396 89 ; 396236 ; 396529 ;
Abstract
An optical apparatus comprises a lens which can be moved in the direction of the optical axis, a moving unit for moving the lens, and a signal generator for detecting information about the movement of the lens, the signal generator comprising a wiring board which is disposed on a surface intersecting the optical axis at right angles and on which a signal generating pattern is formed, and a signal generating member which is moved around the optical axis by rotating the rotating member in the moving unit and which slides on the signal generating pattern. There is thus no need for providing a flexible printed wiring board, as conventional lens barrels.