基于相对辐射强度的非接触式LED结温测量法

被引:8
作者
叶炎钟
郑晓东
刘旭
李海峰
机构
[1] 浙江大学现代光学仪器国家重点实验室
关键词
LED; 结温; 测量; 非接触; 辐射强度; 正向电压;
D O I
10.16136/j.joel.2009.08.012
中图分类号
TN312.8 [];
学科分类号
0803 ;
摘要
提出了一种新的非接触式发光二极管(LED)结温测量的相对辐射强度法。利用该方法对不同功率、不同封装材料、不同颜色的LED进行结温测量,并与正向电压法测得的结果进行比较。结果表明,相对辐射强度法能准确地确定其结温,采用硅凝胶封装的大功率LED,误差在4℃以内;而采用环氧树脂封装的直径5mmLED,当其结温不超过80℃时,误差在6℃以内。
引用
收藏
页码:1053 / 1057
页数:5
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