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LED白光发光原理

更新时间: 2020-07-10 00:00:00     

1、.LED本身能发光,但波长较短,最长的,也是人眼能见到的是蓝光;

2、LED用于照明,在发蓝光的芯片上涂能吸收蓝光而发黄光的荧光粉,则组合发白光;

3、在发更短波长的芯片上,分别涂能吸收这些光而发红,绿,蓝的荧光粉,组合成白光。

关键词: led 发光 原理

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