Invention Grant
- Patent Title: Light emitting device, vehicle headlamp, and illumination device
- Patent Title (中): 发光装置，车辆前照灯和照明装置
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Application No.: US13284487Application Date: 2011-10-28
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Publication No.: US08814405B2Publication Date: 2014-08-26
- Inventor: Koji Takahashi , Yoshiyuki Takahira , David Montgomery , James Suckling
- Applicant: Koji Takahashi , Yoshiyuki Takahira , David Montgomery , James Suckling
- Applicant Address: JP Osaka-shi
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka-shi
- Agency: Morrison & Foerster LLP
- Priority: JP2010-244570 20101029
- Main IPC: B60Q1/04
- IPC: B60Q1/04 ; B60Q1/00
Abstract:
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.
Public/Granted literature
- US08740430B2 Light emitting device, vehicle headlamp, and illumination device Public/Granted day:2014-06-03
Information query
