Invention Grant
- Patent Title: Objective lens driving apparatus
- Patent Title (中): 物镜驱动装置
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Application No.: US11743113Application Date: 2007-05-01
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Publication No.: US07791985B2Publication Date: 2010-09-07
- Inventor: Akira Iijima , Noboru Onojima
- Applicant: Akira Iijima , Noboru Onojima
- Applicant Address: JP Osaka
- Assignee: Sanyo Electric Co., Ltd.
- Current Assignee: Sanyo Electric Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: SoCal IP Law Group LLP
- Agent Steven C. Sereboff; John E. Gunther
- Priority: JP2006-133715 20060512
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An objective lens driving apparatus comprising: an actuator movable unit that is configured such that a driving coil is mounted on a lens holder with an objective lens, and is supported on an actuator frame displaceably and elastically; a magnetic circuit that includes a magnet fixed to the actuator frame to form an effective magnetic field for the driving coil; and a rolling canceling coil that is so mounted on the lens holder as to act on the effective magnetic field formed by the magnetic circuit so effectively that a driving force is generated in a tilt direction that cancels rolling generated when a drive signal is supplied to a tracking coil to drive the actuator movable unit in a tracking direction.
Public/Granted literature
- US20070263495A1 Objective Lens Driving Apparatus Public/Granted day:2007-11-15
Information query
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