发明名称 |
Pickup apparatus, optical recording and reproduction apparatus, and recording and reproduction method |
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. |
申请公布号 |
US8305866(B2) |
申请公布日期 |
2012.11.06 |
申请号 |
US20100951967 |
申请日期 |
2010.11.22 |
申请人 |
TANABE NORIHIRO;SAITO KIMIHIRO;MIURA TAKAHIRO;SUMI YOJIRO;NISHI NORIAKI;SONY CORPORATION |
发明人 |
TANABE NORIHIRO;SAITO KIMIHIRO;MIURA TAKAHIRO;SUMI YOJIRO;NISHI NORIAKI |
分类号 |
G11B7/00;G11B7/135 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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