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    • 53. 发明专利
    • Lighting system and light source unit using it
    • 照明系统和光源单元使用它
    • JP2007087792A
    • 2007-04-05
    • JP2005275584
    • 2005-09-22
    • Minebea Co Ltdミネベア株式会社
    • KITAMURA ATSUSHIKUNIMOCHI TORU
    • F21S2/00B60K35/00F21V5/04F21V29/00F21Y101/02G02F1/13357
    • G02F1/133611F21V5/007F21V5/045F21Y2115/10G02B3/0056G02B3/08G02B5/02G02B27/0101G02B2027/0118G02F1/133603G02F2001/133607G03B21/16G03B21/2033
    • PROBLEM TO BE SOLVED: To provide a compact lighting system having high and excellently uniform luminance using a plurality of LEDs and a light source using the lighting system. SOLUTION: The lighting system 20 comprises a surface light source 15 formed by arraying a plurality of LEDs 15a-15j in the two dimension, a light collecting means 12 for converting the light from the surface light source 15 into the almost parallel light, and a light diffusion means 14, wherein the light collecting means 12 is formed of Fresnel lenses provided in positions corresponding to the LEDs 15a-15j respectively, the light diffusion means 14 is formed by arraying Fresnel lenses having caliber smaller than that of the Fresnel lenses of the light collecting means 12 with density higher than that of the light diffusion means 14. A light source unit 10 having a liquid crystal panel 23 and a lighting system 20 arranged behind the liquid crystal panel 23 has high luminance suitable for a head-up display. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:使用多个LED和使用照明系统的光源来提供具有高且均匀亮度的紧凑照明系统。 解决方案:照明系统20包括通过排列两维中的多个LED 15a-15j而形成的表面光源15,用于将来自表面光源15的光转换成几乎平行的光的聚光装置12 和光扩散装置14,其中集光装置12由分别设置在与LED 15a-15j相对应的位置的菲涅耳透镜形成,光扩散装置14通过排列具有小于菲涅耳的口径的菲涅耳透镜而形成 聚光装置12的透镜的密度高于光扩散装置14.具有液晶面板23和布置在液晶面板23后面的照明系统20的光源单元10具有适合于头灯的亮度, 显示。 版权所有(C)2007,JPO&INPIT