Invention Grant
- Patent Title: Optical pickup device
- Patent Title (中): 光学拾取装置
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Application No.: US11904296Application Date: 2007-09-26
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Publication No.: US07881166B2Publication Date: 2011-02-01
- Inventor: Yuichi Kamioka
- Applicant: Yuichi Kamioka
- Applicant Address: JP Osaka
- Assignee: Funai Electric Co., Ltd.
- Current Assignee: Funai Electric Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Osha Liang LLP
- Priority: JP2006-267163 20060929
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
In an optical pickup device including light sources for emitting laser light, an objective lens for collecting the laser light emitted from the light sources on a disc surface of an optical disc, a light receiving unit for receiving the reflected light reflected by the disc surface, a collimator lens for correcting spherical aberration of the exit light from the objective lens, a lens driving unit for moving the collimator lens in an optical axis direction, and a control unit for controlling the operation of the lens driving unit based on the output of the light receiving unit, the astigmatism of the exit light from the objective lens is corrected by tilting the collimator lens by a predetermined angle by the lens driving unit.
Public/Granted literature
- US20080080337A1 Optical pickup device Public/Granted day:2008-04-03
Information query
IPC分类: