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    [下载]Freeform surface design for a light-emitting diode–based collimating lens [复制链接]

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    离线光之娇子
     
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    只看楼主 倒序阅读 楼主  发表于: 2010-10-08
    关键词: LED自由曲面
    Freeform surface design for a light-emitting diode–based collimating lens /yNLFL"  
    # 8fq6z|JZ  
    A freeform collimating lens is designed to project light rays emitted from an LED light source to a far target plane. Generally, the projection distance is assumed to be more than 100 m, and the light beam to have negligible divergence. The lens consists of a total internal reflection TIR side surface, a spherical surface in the rear, a vertical plane surface in the outer part of the front, and a freeform refractive surface in the central part of the front. Light rays emitted from the LED source with large spread angles hit the TIR surface and are redirected parallel to the light axis, and those having small spread angles will be collimated by the freeform refractive surface, which is designed with a simple approximation method, and then travel parallel to the light axis. Computer simulation results show that an optical efficiency of 81.5% is achieved under a view angle of ±5 deg and for a 1 mm1 mm LED source.
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    cyqdesign 光币 +5 - 2010-10-08
     
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    离线光之娇子
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    只看该作者 1楼 发表于: 2010-10-09
    我自己先来顶一下,呵呵~ 09L"~:rg  
    离线yrstudio
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    只看该作者 2楼 发表于: 2010-10-10
    挣点钱下在
    离线yrstudio
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    只看该作者 3楼 发表于: 2010-10-10
    Freeform surface design for a light-emitting diode–based
    离线blueboy123
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    只看该作者 4楼 发表于: 2011-01-01
    不错啊,好文章
    离线luoxiaoxia
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    只看该作者 5楼 发表于: 2011-03-13
    Freeform surface design for a light-emitting diode–based
    离线爱光学
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    只看该作者 6楼 发表于: 2011-03-25
    非常支持这个
    离线1009832241
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    只看该作者 7楼 发表于: 2012-06-04
    谢谢。。。。
    离线1009832241
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    只看该作者 8楼 发表于: 2012-06-04
    学习学习
    离线lovetymabc
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    只看该作者 9楼 发表于: 2012-06-05
    看看先了 'l $ViNq;