发明名称 |
Light source |
摘要 |
A light source comprises a light-emitting device to emit electromagnetic radiation from an emitting surface and an optical element having a light input surface, a light output surface and side surfaces connecting the light input surface to the light output surface. The light input surface is located in the optical path of the light-emitting device, the electromagnetic radiation entering the optical element through the light input surface, and the light input surface has a concave curvature and an area being smaller than the area of the light output surface. |
申请公布号 |
US8944657(B2) |
申请公布日期 |
2015.02.03 |
申请号 |
US200812602444 |
申请日期 |
2008.05.28 |
申请人 |
OSRAM Opto Semiconductors GmbH;OSRAM Gesellschaft mit beschränkter Haftung |
发明人 |
Scordino Alessandro;Muschawek Julius;Marfeld Jan |
分类号 |
F21V7/04;H01L33/00;H01L33/58;F21K99/00;G02B19/00;H01L25/075;H01L33/60 |
主分类号 |
F21V7/04 |
代理机构 |
|
代理人 |
O'Connor Cozen |
主权项 |
1. A light source, comprising:
a light-emitting device to emit electromagnetic radiation from an emitting surface; and an optical element having a light input surface, a light output surface, and side surfaces connecting the light input surface to the light output surface; wherein: the entire light input surface is located in the optical path of the light-emitting device, in front of the emitting surface, so that the electromagnetic radiation enters the optical element through the light input surface; the light input surface has a concave curvature and an area smaller than an area of the light output surface; the entire light input surface is separated from the emitting surface by a distance greater than or equal to about 0.8 mm and less than or equal to about 2 mm, forming a gap between the light-emitting device and the optical element; and a first bluish part of the electromagnetic radiation directly and completely illuminates the entire light output surface; and a second yellowish part of the electromagnetic radiation completely illuminates the entire light output surface after being reflected by the side surfaces towards the light output surface. |
地址 |
Regensburg DE |