发明授权
- 专利标题： Lighting device, liquid crystal display unit, and electronic equipment
- 专利标题（中）： 照明装置，液晶显示单元和电子设备
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申请号： US09042869申请日： 1998-03-17
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公开(公告)号： US06283602B1公开(公告)日： 2001-09-04
- 发明人: Yoshito Kawaguchi , Shigeo Kobayashi
- 申请人： Yoshito Kawaguchi , Shigeo Kobayashi
- 优先权： JP9-065164 19970318
- 主分类号： F21V800
- IPC分类号： F21V800
摘要：
In a lighting device in which planar light is emitted from the planar light emitting surface of a light guide by using a point-source light, such as an LED, the emitted light having a uniform luminance level is obtained on the overall light emitting surface. The lighting device has a point-source light 18 for emitting light in a point-like form. A planar light guide 16 radiates light in a planar form from the planar light emitting surface 16a. A linear light guide 19 is disposed between the point-source light 18 and the planar light guide 16. The point-like light emitted from the point-source light 18 is converted into linear light by the linear light guide 19, and the linear light is guided into the planar light guide 16 through the light incident surface 16b. Since the linear light is incident on the planar light guide 16, the light having a uniform luminance level can be obtained on the overall light emitting surface 16a.
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