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:
Apr. 18, 1995
Filed:
Mar. 29, 1993
Kazuo Noda, Yokohama, JP;
Eiichi Nakamura, Sagamihara, JP;
Nippon Conlux Co., Ltd., Tokyo, JP;
Abstract
To provide a driving device for an objective lens that has a high driving sensitivity and superior driving frequency characteristics. The present invention relates to a device for driving the objective lens (1) of an optical head that uses a device for recording information on an optical information recording medium, and for reproducing information therefrom, by irradiating a beam of light thereon while positioning and focusing the light with respect to an information track on the optical information recording medium. The device has a loose linkage member which supports an objective lens within a cylindrical member and comprises the cylindrical member (14 ) and a cylindrical hole portion (19 ) into which the cylindrical member is inserted so as to face the cylindrical hole with an air gap therebetween and with the axes thereof oriented vertically, and the driving force generated by a tracking coil (3 ) is transmitted through this loose linkage member to the objective lens.