发明授权
- 专利标题： Pickup apparatus, optical recording and reproduction apparatus, and recording and reproduction method
- 专利标题（中）： 拾取装置，光学记录和再现装置以及记录和再现方法
-
申请号： US12951967申请日： 2010-11-22
-
公开(公告)号： US08305866B2公开(公告)日： 2012-11-06
- 发明人: Norihiro Tanabe , Kimihiro Saito , Takahiro Miura , Yojiro Sumi , Noriaki Nishi
- 申请人： Norihiro Tanabe , Kimihiro Saito , Takahiro Miura , Yojiro Sumi , Noriaki Nishi
- 申请人地址： JP Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Wolf, Greenfield & Sacks, P.C.
- 优先权： JP2009-276619 20091204
- 主分类号： G11B7/00
- IPC分类号： G11B7/00
摘要：
A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator, wherein a coma aberration generated by the transverse shift of the object lens is corrected by a coma aberration which is generated by the deviation of a spherical aberration generated in an optical path from the light source to the object lens and a spherical aberration generated in an optical path from the object lens to a light concentration position on the optical recording medium which are due to the transverse shift.
公开/授权文献
信息查询
IPC分类:
