发明授权
US07304935B2 Optical pickup device and correcting element used in the optical pickup device
失效
用于光拾取装置的光学拾取装置和校正元件
- 专利标题： Optical pickup device and correcting element used in the optical pickup device
- 专利标题（中）： 用于光拾取装置的光学拾取装置和校正元件
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申请号： US10976845申请日： 2004-11-01
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公开(公告)号： US07304935B2公开(公告)日： 2007-12-04
- 发明人: Kiyono Ikenaka , Shinichiro Saito , Yuichi Atarashi
- 申请人： Kiyono Ikenaka , Shinichiro Saito , Yuichi Atarashi
- 申请人地址： JP Tokyo
- 专利权人： Konica Minolta Opto, Inc.
- 当前专利权人： Konica Minolta Opto, Inc.
- 当前专利权人地址： JP Tokyo
- 代理机构： Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- 优先权： JP2003-374616 20031104
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
An optical pickup device wherein at least a high density disc such as HD-DVD is compatible with DVD, and securing an amount of light is compatible with correction of chromatic aberration. An a correcting element representing an optical system used for the aforementioned optical pickup device.
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