发明名称 |
Optical pickup and optical recording and/or reproducing apparatus adopting the same |
摘要 |
An optical pickup which, when a first light reflected by a recording medium is divided into a central light area and first and second peripheral light areas at both sides of the central light area, divides the first light reflected by the recording medium into at least 6 light areas, and the at least 6 light areas are independently detected from first through sixth light-receiving portions of a photodetector. Hence, the photodetector can detect a tracking error signal whose offset generation due to a shift of an objective lens is insensitive and whose offset generation due to an initial photodetector balance deviation is depressed.
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申请公布号 |
US2005047292(A1) |
申请公布日期 |
2005.03.03 |
申请号 |
US20040926150 |
申请日期 |
2004.08.26 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
PARK SUN-MOOK;JUNG JIN-HO;SEONG PYON-YONG |
分类号 |
G11B7/00;G11B7/09;G11B7/125;G11B7/13;G11B7/135;(IPC1-7):G11B7/00 |
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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