发明名称 |
LIGHT SOURCE DEVICE |
摘要 |
The index of refraction of a light guide (6) for transmitting light outputted from a primary light source (1) is ng, and the light guide (6) has a light input end face (9), a light output surface from which the transmitted light is outputted, and a back surface opposed to the light output surface. A leaky ray modulator (8) is provided to at least either the light output surface or the back surface. The leaky ray modulator (8) has a composite layer (50) provided on the light output surface or the back surface and composed of first refractive index regions (3) having a refractive index n1 (ng>n1) and second refractive index regions (4) having a refractive index n2 (n2>n1) and a third refractive index layer (5) provided on the composite layer (50) and having a refractive index n3 (n3>n1). A reflecting plate (7) is provided adjacent to the back surface of the light guide (6). <IMAGE>
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申请公布号 |
EP1329664(A1) |
申请公布日期 |
2003.07.23 |
申请号 |
EP20010967825 |
申请日期 |
2001.09.25 |
申请人 |
MITSUBISHI RAYON CO., LTD. |
发明人 |
YAMASHITA, TOMOYOSHI;HAYASHI, YASUKO |
分类号 |
F21V8/00;(IPC1-7):G02B6/00;G02F1/133 |
主分类号 |
F21V8/00 |
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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