发明名称 |
Hologram optical device, compatible optical pickup including the hologram optical device, and optical information storage medium system including the compatible optical pickup |
摘要 |
A hologram optical device, a compatible optical pickup including the hologram optical device, and an optical information storage medium system including the compatible optical pickup are provided. The hologram optical device includes: a first hologram area having a hologram that is asymmetric with respect to an optical axis to diffract an incident light in a 0th order diffractive light and a 1st order diffractive light, wherein light spots are formed by focusing the 0th order and 1st order diffractive lights using a lens. Accordingly, a light spot of the 1st order diffractive light is formed at a position separated from an optical axis of the lens when a light spot formed by the 0th order diffractive light is formed on the optical axis of the lens.
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申请公布号 |
US8009543(B2) |
申请公布日期 |
2011.08.30 |
申请号 |
US20080969355 |
申请日期 |
2008.01.04 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
BAE JAE-CHEOL;KIM TAE-KYUNG;PARK KYONG-TAE |
分类号 |
G11B7/135 |
主分类号 |
G11B7/135 |
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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