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, 1991
Filed:
Feb. 15, 1990
Applicant:
Inventors:
Yasuo Yamazaki, Hino, JP;
Kazutoshi Shiratori, Hino, JP;
Assignee:
Olympus Optical Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350429 ; 350255 ; 35419512 ;
Abstract
A zoom lens-barrel assembly includes a differential cam frame which is moved in an axial direction together with a movable barrel and is rotated around an optical axis. Lens holding frames are cam-linked with the differential cam frame. The positions of the lens holding frames relative to the cam frame are changed by the rotation of the cam frame.