发明名称 |
Lighting device |
摘要 |
The lighting device is equipped with a light guide having a linear Fresnel reflection surface consisting of steps of continuously alternating reflecting surfaces having two different reflection angles. A light source is installed at one end of the light guide of the above construction so that the light from the light source is emitted from the irradiation surface of the light guide after being reflected by the linear Fresnel reflection surface.
|
申请公布号 |
US4914553(A) |
申请公布日期 |
1990.04.03 |
申请号 |
US19880249222 |
申请日期 |
1988.09.22 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
HAMADA, HIROSHI;KIMURA, NAOFUMI;FUNADA, FUMIAKI |
分类号 |
G02F1/1335;F21V8/00;G02F1/133;G02F1/13357;G09F9/00 |
主分类号 |
G02F1/1335 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|