发明名称 |
Hologram optical device, and compatible optical pickup having the hologram optical device and optical information storage medium system employing the compatible optical pickup |
摘要 |
A hologram optical device, and a compatible optical pickup having the hologram optical device and an information storage medium system employing the hologram optical device. The hologram optical device includes a hologram having a pattern having a period in a 4-step stairway shape. At least one of first, second, third, and fourth steps of the 4-step stairway shape is formed in a different width from at least one other step. |
申请公布号 |
US8089849(B2) |
申请公布日期 |
2012.01.03 |
申请号 |
US20080018308 |
申请日期 |
2008.01.23 |
申请人 |
BAE JAE-CHEOL;KIM TAE-KYUNG;PARK KYONG-TAE;SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
BAE JAE-CHEOL;KIM TAE-KYUNG;PARK KYONG-TAE |
分类号 |
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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