A POF Based Breakdown Method for LED Lighting Color Shift Reliability

来源 :第十二届中国国际半导体照明论坛 | 被引量 : 0次 | 上传用户：houjhz

【摘要】

：

Color shift mechanism of LED lighting is complex due to its much more comprehensive structure,generally composed of LED die,phosphor,silicone,reflector,diffusers,and so on,each of them may contribute

【作者】

：

Guangjun Lu W.D. van Driel Xuejun Fan M. Yazdan Mehr Jiajie Fan Cheng Qian G.Q. Zhang

【机构】

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Beijing Research Center,Delft University of Technology,Beijing,China;Delft University of Technology,

【出处】

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第十二届中国国际半导体照明论坛

【发表日期】

：

2015年5期

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　　Color shift mechanism of LED lighting is complex due to its much more comprehensive structure,generally composed of LED die,phosphor,silicone,reflector,diffusers,and so on,each of them may contribute to the color shift during operation.This paper proposed a breakdown method for the color shift study and investigation on the LED based luminaire level products.For the downlight investigated in this paper,the LED packages part has the most important contribution in color shift,higher than 1sdcm even under the normal operation conditions of room temperature.Both humidity and temperature conditions can be used to accelerate the color shift of the mid power 5630 package and the humidity has a stronger acceleration.The reflective part contributes far less than 1 sdcm even when the reflective material crumbles after 4000hours of humidity test under certain conditions.

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A POF Based Breakdown Method for LED Lighting Color Shift Reliability

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