| 发明名称 |
Illuminating device having non-absorptive variable transmissivity cover |
| 摘要 |
<p>An illuminating device with a light source and a substantially non light absorptive cover. The light transmissivity of the cover at any point on the cover varies as a function of the position of that point, such that the luminance of light escaping through the cover at that point has a selected luminous exitance as a function of the position of that point. <MATH></p> |
| 申请公布号 |
EP0691508(A2) |
申请公布日期 |
1996.01.10 |
| 申请号 |
EP19950114791 |
申请日期 |
1990.04.02 |
| 申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
WHITEHEAD, LORNE A. |
| 分类号 |
C08L59/00;F21V7/00;F21V8/00;G09F13/04;G09F13/06;G09F13/14;(IPC1-7):F21V7/00 |
主分类号 |
C08L59/00 |
| 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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