| 发明名称 |
SINGLE BI-ASPHERICAL LENS |
| 摘要 |
A single element lens having two aspherical refractive surfaces comprises a lens substrate and two layers of transparent plastic. Each layer has an aspherical outer profile. The lens substrate is a sphere and can be manufactured simply and cheaply. |
| 申请公布号 |
AU4888585(A) |
申请公布日期 |
1986.05.01 |
| 申请号 |
AU19850048885 |
申请日期 |
1985.10.21 |
| 申请人 |
PHILIPS: GLOEILAMPENFABRIEKEN, N.V. |
发明人 |
JOSEPHUS JOHANNES MARIA BRAAT |
| 分类号 |
G02B13/00;G02B3/02;G02B3/04;G02B13/18;G11B7/135 |
主分类号 |
G02B13/00 |
| 代理机构 |
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代理人 |
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