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. 29, 1998
Filed:
Apr. 26, 1996
Applicant:
Inventor:
Akihiko Makita, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359824 ; 359822 ; 359821 ; 359813 ; 369 4418 ;
Abstract
A lens actuator in an optical disk apparatus, wherein a rotation drive unit rotates a lens holder including a plurality of objective lenses which have different optical characteristics from each other, and which are disposed on a circumference whose center coincides with an axis of rotation of the lens holder to thereby switch the objective lenses and place an objective lens �to! in a predetermined position.