发明名称 |
LENS FOR LED ILLUMINATION |
摘要 |
A lens may include a light incident surface, a first light emergent surface and side surfaces joining the light incident surface and the first light emergent surface. The light incident surface defines a space for accommodating light sources. The side surface includes at least one total-internal reflection surface and at least one second light emergent surface, a first part of light passing through the light incident surface is refracted by the first light emergent surface and emerges to generate first emergent light, a second part of light passing through the light incident surface is reflected by the total-internal reflection surfaces to the first light emergent surface and is refracted by the first light emergent surface and emerges to generate second light emergent light, and a third part of light passing through the light incident surface is refracted by the second light emergent surfaces and emerges to generate third emergent light. |
申请公布号 |
US2015276146(A1) |
申请公布日期 |
2015.10.01 |
申请号 |
US201314410112 |
申请日期 |
2013.06.28 |
申请人 |
OSRAM GmbH |
发明人 |
Wu Kongyi;Zhang Qihui;Zhang HongWei;Ming Yusheng |
分类号 |
F21K99/00;F21V7/00;F21V5/04 |
主分类号 |
F21K99/00 |
代理机构 |
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代理人 |
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主权项 |
1. A lens, comprising:
a light incident surface, a first light emergent surface and side surfaces joining the light incident surface and the first light emergent surface, wherein the light incident surface defines a space for accommodating light sources, wherein respective side surface comprises at least one total-internal reflection surface and at least one second light emergent surface, a first part of light passing through the light incident surface is refracted by the first light emergent surface and emerges to generate first emergent light, a second part of light passing through the light incident surface is reflected by the total-internal reflection surfaces to the first light emergent surface and is refracted by the first light emergent surface and emerges to generate second light emergent light, and a third part of light passing through the light incident surface is refracted by the second light emergent surfaces and emerges to generate third emergent light. |
地址 |
Muenchen DE |