发明授权
- 专利标题: Optical pickup device and method of laying out the same
- 专利标题(中): 光拾取装置及其布置方法
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申请号: US11642730申请日: 2006-12-21
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公开(公告)号: US07903507B2公开(公告)日: 2011-03-08
- 发明人: Kenji Nagatomi , Seiji Kajiyama
- 申请人: Kenji Nagatomi , Seiji Kajiyama
- 申请人地址: JP Osaka
- 专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人: Sanyo Electric Co., Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2005-376247 20051227; JP2005-377003 20051228
- 主分类号: G11B7/00
- IPC分类号: G11B7/00 ; G11B1/135
摘要:
An optical pickup device is provided, in which, supposing that an angle formed by the meeting of a straight line connecting a center of an optical disk and an accessing position of an HD objective lens with a diameter L of the optical disk is a track angle θ1, an oscillation angle α of an optical system including an HD laser, an HD half mirror, and an HD sensor, and a distance z of the HD objective lens are set so as to satisfy α−(θ1max+θ1min)/2=±45°, where θ1max is the track angle θ1 when the HD objective lens is positioned at an innermost circumference of the optical disk, and θ1min is the track angle θ1 when the HD objective lens is positioned at an outermost circumference of the optical disk.
公开/授权文献
- US20070147198A1 Optical pickup device and method of laying out the same 公开/授权日:2007-06-28
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