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:
Jan. 13, 1987
Filed:
Jan. 24, 1984
Applicant:
Inventors:
Yoshio Komine, Kanagawa, JP;
Kenichi Kawamoto, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350429 ;
Abstract
A mechanical mounting for a zoom lens having a tubular body in which is rotatably fitted a cam sleeve for controlling the axial movements of optical elements contributing to a zooming action. In order to keep the axial position of the cam sleeve relative to the body tube with a high precision accuracy as it rotates about the optical axis, a restraining mechanism is constructed in the form of rollers radially extending from the cam sleeve into a fitted circumferential interior recess of the body tube.