发明名称 |
Optical coupler for distributive lighting system |
摘要 |
A headlamp for a vehicle includes a holder for a light-distribution optical fiber of the type that has an output end emanating light of known spatial-intensity distribution, an optical coupler that has an input end adjacent the holder and includes a plurality of elements, each of which is positioned to receive light from a selected area of the light of known spatial intensity distribution and to alter the intensity or spatial distribution of that light to provide a predetermined spatial intensity distribution at an output of said coupler, and a projection lens to project the predetermined spatial intensity distribution to a desired illumination pattern. The optical coupler may be in the form of a mask and one or more filters or may be a number of light-transmitting elements that carry light from one spatial part of the input to a different spatial part in the output. In general, the optical coupler alters the intensity or angular distribution of the light pattern at the input to produce a desired light pattern at the output for projection onto the road by the projection lens.
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申请公布号 |
US5931576(A) |
申请公布日期 |
1999.08.03 |
申请号 |
US19970805773 |
申请日期 |
1997.02.25 |
申请人 |
NORTH AMERICAN LIGHTING, INC. |
发明人 |
KREYSAR, DOUGLAS F.;WANG, BEN;JENKINS, DAVID R. |
分类号 |
F21S8/12;F21V5/00;F21V8/00;F21V9/00;F21V11/16;(IPC1-7):F21V8/00 |
主分类号 |
F21S8/12 |
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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