| 发明名称 |
SINGLE COLLIMATOR LENS HAVING ONE ASPHERICAL SURFACE |
| 摘要 |
A collimator lens has a small numerical aperture and a specific focal length. One of the surfaces of the lens is planar and the other surface is aspherical. The aspherical surface is defined by a series expansion with only a few even terms. |
| 申请公布号 |
DE3466292(D1) |
申请公布日期 |
1987.10.22 |
| 申请号 |
DE19843466292 |
申请日期 |
1984.12.03 |
| 申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
SMID, ALBERT |
| 分类号 |
G02B13/00;G02B3/04;G02B13/18;(IPC1-7):G02B3/04 |
主分类号 |
G02B13/00 |
| 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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