发明名称 |
SEPARATE OPTICAL DEVICE FOR DIRECTING LIGHT FROM AN LED |
摘要 |
Embodiments of the present invention provide separate optical devices operable to couple to a separate LED, the separate optical device comprising an entrance surface to receive light from a separate LED when the separate optical device is coupled to the separate LED, an exit surface opposite from and a distance from the entrance surface and a set of sidewalls. The exit surface has at least a minimum area necessary to conserve brightness for a desired half-angle of light projected from the separate optical device. Furthermore, each sidewall is positioned and shaped so that at least a majority of rays having a straight transmission path from the entrance surface to that sidewall reflect to the exit surface with an angle of incidence at the exit surface at less than or equal to a critical angle at the exit surface. |
申请公布号 |
EP1974389(A2) |
申请公布日期 |
2008.10.01 |
申请号 |
EP20070716261 |
申请日期 |
2007.01.03 |
申请人 |
ILLUMITEX, INC. |
发明人 |
DUONG, DUNG, T.;WINBERG, PAUL, N.;THOMAS, MATTHEW, R. |
分类号 |
G02B6/00;G02B17/08;H01L33/58;H01L33/60 |
主分类号 |
G02B6/00 |
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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