发明名称 |
Spread illuminating apparatus with light reflection-diffusion layer on optical path conversion means |
摘要 |
The present invention provides a spread illuminating apparatus which can ensure uniform brightness over its entire screen. A light reflection-diffusion layer is formed on a light conductive member at a face provided with an optical path conversion means. Light emitted from spot-like light sources is reflected efficiently by the light reflection-diffusion layer toward a transparent substrate, and light intensity degrades in a substantially linear manner with the increase in distance from respective spot-like light sources. Sharp change of brightness on an observation surface can be prevented due to the light intensity degrading linearly.
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申请公布号 |
US2002141201(A1) |
申请公布日期 |
2002.10.03 |
申请号 |
US20020102870 |
申请日期 |
2002.03.22 |
申请人 |
MINEBEA CO., LTD. |
发明人 |
SHIMURA TAKAHIRO;NAKAMURA YOSHIKI;TOYODA KOICHI |
分类号 |
G02B6/00;F21V8/00;F21Y101/02;G02F1/13357;(IPC1-7):F21V8/00 |
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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