测量LED总光通量的积分球装置中光源位置的探讨  

Discussion on the Position of Light Emitting Diodes(LEDs) in the Total Flux Measurement with Integrating Sphere

作　　者：李文宜[1] 张万路[1] 袁川[1] 刘木清[1] 

机构地区：[1]复旦大学光源与照明工程系,上海200433

出　　处：《复旦学报（自然科学版）》2007年第3期356-359,365,共5页Journal of Fudan University：Natural Science

基　　金：国家863计划资助项目(2006AA03A176)

摘　　要：LED作为新兴光源,与传统光源相比在自身结构和发光特性上很不相同.由于LED本身的自吸收效应以及积分球内挡屏带来的测量误差,沿用传统的积分球光通量测量装置来测量LED的光通量误差较大.应对传统积分球装置内光源的位置和挡屏做调整以减小光通量测量误差.由软件模拟的数据和理论推算证明应将LED放置在积分球内壁且与探测器探头在同一平面内成90°.Light emitting diodes （LEDs） are promising light source for energy saving lighting. Since the geometry structure of LEDs is different from traditional light source, the conventional luminous flux measurement by integrating sphere is challenged due to problems： great absorption of LED itself and optical shield, and the consequently self-heating. By remov- ing of optical shield and relocating the LED from sphere centre to sphere wall where perpendicular to the sensor in a same plane, the above two problems are solved. Optical simulating proves this new method is feasible.

关 键 词：LED 积分球 光通量 仿真 

分 类 号：TB96[机械工程—光学工程]