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:
Mar. 02, 1993
Filed:
Jan. 18, 1991
Tetsuo Sekiguchi, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A lens driving apparatus for moving a plurality of lens groups, in an optical axis direction, to change the spatial distance therebetween, including a supporting cylinder which is secured to an immovable portion of a lens barrel, a cam ring which is rotatably fitted on the supporting cylinder, at least two inner lens moving frames which are provided in the supporting cylinder so as to move in the optical axis direction, guide grooves which are formed on the supporting cylinder to guide the lens moving frames in the optical axis direction, cam grooves which are formed on the cam ring to move the lens moving frames along therewith, and cam followers which are secured to the inner lens moving frames and which extend through the corresponding guide grooves to be fitted into the corresponding cam grooves.