发明名称 |
COMA ABERRATION COMPENSATING DEVICE, COMA ABERRATION COMPENSATING METHOD, AND OPTICAL DISC |
摘要 |
A method for compensating the coma aberration in a pickup of a recording and reproducing device that records or reproduces data on or from an optical disc using the pickup is provided. The method includes a first coma aberration compensating step to compensate coma aberration in a body of an optical system including an objective lens for emitting a light beam to an optical disc including a plurality of recording layers and a second coma aberration compensating step to compensate coma aberration caused by relative inclination of the optical system with respect to the optical disc.
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申请公布号 |
US2011110208(A1) |
申请公布日期 |
2011.05.12 |
申请号 |
US201113006945 |
申请日期 |
2011.01.14 |
申请人 |
PIONEER CORPORATION |
发明人 |
YANAGISAWA TAKUMA |
分类号 |
G11B7/00;G11B7/135;G11B7/24;G11B7/24038 |
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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