Invention Grant
- Patent Title: Optical pickup device and optical disk drive
- Patent Title (中): 光学拾取装置和光盘驱动器
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Application No.: US11582967Application Date: 2006-10-19
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Publication No.: US07755985B2Publication Date: 2010-07-13
- Inventor: Junya Aso , Hiroshi Yamamoto , Yutaka Murakami , Kenichi Nakano
- Applicant: Junya Aso , Hiroshi Yamamoto , Yutaka Murakami , Kenichi Nakano
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Dickinson Wright PLLC
- Priority: JP2005-306926 20051021
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An advantage of the present invention is that it provides an optical pickup device including a first condensing member that condenses light from a first light source; a second condensing member that condenses light from a second light source; a holder that has the first and second condensing members attached thereto; a plurality of tracking coils that drive the holder in a tracking direction of an optical disk; and a plurality of focus coils that drive the holder in a focus direction of an optical disk. The plurality of focus coils are disposed in the holder such that virtual center axes for winding coil are set to be substantially perpendicular to the optical axes of the first and second condensing members, and are disposed in four direction such that the region in which the first and second condensing members are attached is surrounded in a rectangular shape. The tracking coils are disposed in the holder such that virtual center axes for winding coil are set to be substantially perpendicular to the optical axes of the first and second condensing members, and are disposed between the first and second condensing members in a tangential direction.
Public/Granted literature
- US20070091739A1 Optical pickup device and optical disk drive Public/Granted day:2007-04-26
Information query
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