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:
Jan. 11, 2011
Filed:
Aug. 31, 2005
Mitoru Yabe, Tokyo, JP;
Keiji Nakamura, Tokyo, JP;
Mitoru Yabe, Tokyo, JP;
Keiji Nakamura, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An object lens driving apparatus () includes a lens holder () that holds an object lens () facing a recording medium and is so supported that the lens holder () is movable toward and away from the surface of the recording medium. A focusing coil () is fixed in the interior of the lens holder () so that the focusing coil () surrounds an optical axis of the object lens (). By apply current to the focusing coil (), a driving force is generated, which moves the lens holder () toward and away from the surface of the recording medium. By disposing the focusing coil () in the interior of the lens holder () so that the focusing coil () surrounds the optical axis of the object lens (), a movable part of the object lens driving apparatus () can be reduced in size and weight, so that a high sensitivity can be accomplished.