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:
Nov. 11, 1997
Filed:
Dec. 27, 1995
Masayasu Futagawa, Nabari, JP;
Renzaburou Miki, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An objective-lens driving device has a supporting mechanism for supporting a magnetic circuit so as to allow it to freely make a pseudo-translational motion in the focusing direction. The supporting mechanism is provided with two hinges that are placed in such directions as to make a right angle with each other. The hinges are fixed onto the same plane of a base member at respective ends thereof that are farther from each other, and they are also fixed to the magnetic circuit at respective ends thereof that are closer to each other. Moreover, each hinge has flexible sections that are formed in at least two locations of each hinge with predetermined intervals from the magnetic circuit so that they are in parallel with each other. These flexible sections are formed in such a manner that they make a right angle with each other on the two hinges. This supporting mechanism, which has the hinges that are placed on the same plane, makes it possible to reduce a space taken in the focusing direction to a great degree. Therefore, it becomes possible to make the objective-lens driving device more compact and thinner. Furthermore, it is possible to easily manufacture the objective-lens driving device.