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.: US13280572Application Date: 2011-10-25
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Publication No.: US08733957B2Publication Date: 2014-05-27
- Inventor: Koji Takahashi
- Applicant: Koji Takahashi
- 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: JP2010-244574 20101029; JP2011-176173 20110811
- Main IPC: F21V9/16
- IPC: F21V9/16 ; F21S8/10 ; F21S8/12 ; F21Y101/02

Abstract:
A headlamp includes an laser element for emitting a laser beam; a light emitting section for emitting fluorescence by receiving the laser beam emitted from the laser element; and a parabolic mirror for reflecting the fluorescence emitted from the light emitting section, the light emitting section being placed so that a focal point of the parabolic mirror and a periphery of the focal point are positioned on the light emitting section, the light emitting section being most strongly excited at a portion corresponding to the focal point, meanwhile, at a portion corresponding to the periphery of the focal point, the light emitting section being excited with intensity being dependent on light intensity distribution of the excitation light on an irradiation surface of the light emitting section.
Public/Granted literature
- US20120106183A1 LIGHT EMITTING DEVICE, VEHICLE HEADLAMP, AND ILLUMINATION DEVICE Public/Granted day:2012-05-03
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