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:
Sep. 01, 1992
Filed:
Feb. 14, 1991
Applicant:
Inventor:
Tetsuo Sekiguchi, Tokyo, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G03B / ;
U.S. Cl.
CPC ...
359700 ; 359823 ; 35419512 ;
Abstract
A zoom lens barrel having an adjusting ring connected to a cam ring through a gear ring. The cam ring is rotatably supported by a stationary cylinder in which some of the lens groups are housed. The gear ring is fixed to the cam ring. The stationary cylinder is provided with the adjusting ring, which is movable relative to the stationary cylinder and along the optical axis. The adjusting ring is connected to the cam ring in such a manner that the adjusting ring and the cam ring can be rotated relative to each other and can be moved along the optical axis as a single body.