蓝光LED投光灯具高温老化光电性能研究  

Research on Optical Performance of Blue LED Floodlights Under High-Temperature Aging

作　　者：王爽[1] 熊峰[1] 杨洁翔 俞涛[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072 [2]上海半导体照明工程技术研究中心工程部,上海201203

出　　处：《半导体技术》2011年第1期76-78,83,共4页Semiconductor Technology

基　　金：上海市科委科技攻关项目(08DZ1140601)

摘　　要：为了实际工程对灯具进行快速筛选和评价的需要,研究大功率LED投光灯具的老化光电特性,应用高温老化和光电性能测试的方法,对大功率蓝光LED投光灯具进行了高温老化试验并做了光电性能测试,分析其光电参数在老化过程中的变化情况。实验结果显示,光通量参数值在老化过程中有不同变化,其中一种灯具光通量值有上升的情况。结果表明:在灯具光源选取一致的情况下,散热结构与驱动电源是影响灯具性能的两个主要方面。Aging optical properties of the high-power blue LED floodlights were studied in order to meet the needs of lightings rapid screening and evaluation in the actual works. High-temperature aging test and optical performance test were done on high-power LED floodlights with high temperature aging and optical properties test method, and the changes of the optical parameters in the situation of the aging process were analyzed. The experimental results are as follow ： the changes of flux value parameters in the aging process are different, one light flux values are rising. The results show that the thermal structure and the driving power are the two main aspects that affect lighting performance when the same light source is selected.

关 键 词：蓝光LED 投光灯具 高温老化 光电参数 灯具性能 

分 类 号：TN364.2[电子电信—物理电子学] TN306