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:
Dec. 11, 2007
Filed:
Mar. 23, 2007
Satoru Matsumoto, Saitama, JP;
Tetsuo Kamigaki, Saitama, JP;
Satoru Matsumoto, Saitama, JP;
Tetsuo Kamigaki, Saitama, JP;
Fujinon Corporation, Saitama-Shi, JP;
Abstract
A cam barrelrotates in one way in varying a power to move four lens holding frames in the same direction by displacements of four cam openingsto. Cam barrel cam followersare provided on an outer periphery of the cam barrel. The cam barrel cam followersare passed through cam barrel cam openingsprovided to a fixed barrel being arranged on an outer periphery of the cam barrel, and engage with a power variation driving ring arranged on an outer periphery of the fixed barrel. The power variation driving ring is used to rotate the cam barreland move respective lens holding frames. Since the cam barrel cam followersengage with the cam barrel cam openings, the cam barrelis moved according to displacements of the cam barrel cam openingswhile holding respective lens holding frames.