发明授权
- 专利标题： Light emitting device, vehicle headlamp, and illumination device
- 专利标题（中）： 发光装置，车辆前照灯和照明装置
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申请号： US13284487申请日： 2011-10-28
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公开(公告)号： US08814405B2公开(公告)日： 2014-08-26
- 发明人: Koji Takahashi , Yoshiyuki Takahira , David Montgomery , James Suckling
- 申请人： Koji Takahashi , Yoshiyuki Takahira , David Montgomery , James Suckling
- 申请人地址： JP Osaka-shi
- 专利权人： Sharp Kabushiki Kaisha
- 当前专利权人： Sharp Kabushiki Kaisha
- 当前专利权人地址： JP Osaka-shi
- 代理机构： Morrison & Foerster LLP
- 优先权： JP2010-244570 20101029
- 主分类号： B60Q1/04
- IPC分类号： B60Q1/04 ; B60Q1/00
摘要：
A headlamp of one embodiment of this invention includes a laser element for emitting a laser beam, a light emitting section for generating fluorescence upon receiving the laser beam, and a reflecting mirror for projecting the fluorescence. Distribution of the fluorescence emitted by the light emitting section corresponds to Lambertian distribution, and an incident angle of the laser beam with respect to an excitation light irradiated surface, which is a surface of the light emitting section irradiated with the laser beam, is set so that use efficiency of the fluorescence emitted by the light emitting section is increased.