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. 22, 1994
Filed:
Jul. 29, 1991
Applicant:
Inventors:
Masayoshi Sekine, Tokyo, JP;
Junichi Murakami, Atsugi, JP;
Shigeru Ogino, Tokyo, JP;
Hiroyuki Takahara, Yokohama, JP;
Masamichi Toyama, Yokohama, JP;
Sadahiko Tsuji, Yokohama, JP;
Shigeyuki Suda, Yokohama, JP;
Jun Tokumitsu, Sagamihara, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
359813 ; 359814 ;
Abstract
This specification discloses an optical apparatus provided with a lens unit movable in the direction of the optical axis thereof, a lens barrel, an electromagnetic coil coupled to one of the lens unit and the lens barrel, a driving unit having a magnetic material coupled to the other of the lens unit and the lens barrel, and a guide for slidably guiding the lens unit relative to the lens barrel.