| 发明名称 |
Holographic objective mirrors for optical storage. |
| 摘要 |
<p>A holographic mirror is used in an optical storage head to diffract a laser beam perpendicularly to the optical medium and also to focus the beam onto the optical medium. The mirror can also function to cause circularisation of a collimated laser beam of elliptical cross-section.</p> |
| 申请公布号 |
EP0281756(A2) |
申请公布日期 |
1988.09.14 |
| 申请号 |
EP19880101467 |
申请日期 |
1988.02.02 |
| 申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
LATTA, MILTON RUSSELL;STRAND, TIMOTHY CARL |
| 分类号 |
G02B7/28;G11B7/085;G11B7/12;G11B7/135;G11B7/09 |
主分类号 |
G02B7/28 |
| 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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