Invention Grant
- Patent Title: Objective lens drive apparatus where interaction of drive magnets and drive coils drive a holding member that holds the objective lens and optical pickup and optical disk apparatus including the same
- Patent Title (中): 驱动磁体和驱动线圈的相互作用的物镜驱动装置驱动保持物镜的保持部件和包括该物镜的光拾取器和光盘装置
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Application No.: US11987773Application Date: 2007-12-04
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Publication No.: US08255936B2Publication Date: 2012-08-28
- Inventor: Goichi Akanuma , No-Cheol Park , Dong-Ju Lee , Myeong-Gyu Song , Yang-Hyun Seok
- Applicant: Goichi Akanuma , No-Cheol Park , Dong-Ju Lee , Myeong-Gyu Song , Yang-Hyun Seok
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Dickstein Shapiro LLP
- Priority: JP2006-343713 20061221
- Main IPC: G11B7/09
- IPC: G11B7/09

Abstract:
An objective lens drive apparatus configured to drive an objective lens that focuses a laser beam on an optical disk is disclosed, the apparatus including a holding member that holds the objective lens; at least one pair of drive magnets arranged to face each other at opposite sides of the holding member with respect a tangential direction that is parallel to a tangential line of the optical disk, the drive magnets having protruding end portions that protrude from each side of the holding member with respect to a tracking direction that is parallel to a radial direction of the optical disk; and plural drive coils configured to drive the holding member through interaction with the drive magnets, at least one of the drive coils being arranged on each side of the drive magnets with respect to the tangential direction.
Public/Granted literature
- US20080151737A1 Objective lens drive apparatus, optical pickup, and optical disk apparatus Public/Granted day:2008-06-26
Information query
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