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:
Jun. 01, 2004
Filed:
Aug. 29, 2002
Applicant:
Inventors:
Norikatsu Konno, Shinagawa-ku, JP;
Hitoshi Imanari, Yokohama, JP;
Hideo Kanno, Chiba, JP;
Kazumitsu Takezawa, Yokohama, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 1/704 ; G03B 1/104 ;
U.S. Cl.
CPC ...
G03B 1/704 ; G03B 1/104 ;
Abstract
A shading device employed in a lens barrel having a plurality of lens groups includes a plurality of substantially tubular shading members provided between a first lens group and a second lens group that move relative to each other along the optical axis and overlap each other along the optical axis so as to allow the shading device to achieve a telescopic function.