| 发明名称 |
Liquid crystal picture screen with collimator having microprisms |
| 摘要 |
The invention relates to a liquid crystal picture screen provided with a background lighting system which comprises at least one light source and a collimator formed by hourglass-shaped microprisms. The light of the light source can be effectively collimated within a desired angular range by means of the collimator.
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| 申请公布号 |
US7126653(B2) |
申请公布日期 |
2006.10.24 |
| 申请号 |
US20030478073 |
申请日期 |
2003.11.18 |
| 申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
GLAESER HARALD;BECHTEL HANS-HELMUT;BERTRAM DIETRICH |
| 分类号 |
G02F1/1335;F21V5/00;F21V5/02;F21V8/00;G02B5/04;G02B6/00;G02F1/13357 |
主分类号 |
G02F1/1335 |
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