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. 09, 1991
Filed:
Apr. 06, 1990
Applicant:
Inventors:
Takahiro Kohno, Kanagawa, JP;
Masae Miyakawa, Saitama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350429 ; 350257 ;
Abstract
In a lens barrel having an electromechanical transducer for driving an iris mechanism, a zooming motor for driving a zoom mechanism and focusing motor for driving a focusing mechanism, at least one of the zooming motor and the focusing motor is arranged to be a geared motor in which a motor part and a reduction gear part are interconnected in the direction of an output shaft; and the motor part of the geared motor is disposed in front of the reduction gear part as viewed in the direction of the optical axis of the lens barrel.