| 发明名称 |
Fresnel lens fabrication |
| 摘要 |
A Fresnel lens is fabricated by depositing concentric layers of first and second materials in alternation on a substrate surface. The substrate and deposited layers are then drawn down to provide a predetermined Fresnel lens zone structure.
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| 申请公布号 |
US4643752(A) |
申请公布日期 |
1987.02.17 |
| 申请号 |
US19850737912 |
申请日期 |
1985.05.28 |
| 申请人 |
AT&T BELL LABORATORIES |
发明人 |
HOWARD, RICHARD E.;LIAO, PAUL F.;STOLEN, ROGERS H. |
| 分类号 |
G02B3/08;G02B5/18;G02B6/036;(IPC1-7):G02B3/08 |
主分类号 |
G02B3/08 |
| 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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