[求助]LED的发散角 [复制链接]

请问LED的参数中viewing angle是什么意思？是它内部的反光碗的发散角吗？

不是吧

那应该怎么取值呀？从产品参数中找不到呀

有没有固定的值呀？

光强极值50%到中心之间夹角的2倍，即为viewing angle

4楼说得有理,通常取50%时的角度,而LED规格书也是注明发散角的角度也是在50%

附件为常见LED规格书中关于视角的示意

倘若LED封装无透镜设计的话，那么辐射体为朗伯体，其全视角（viewing angle）为120度 b~DtaGh  
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加了透镜的话，就要看规格书了

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Feature of the device:  high efficient lightsource at low space \b{Aj,6,  
Color coordinates:  x = 0.31, y = 0.32 CIE 1931 (weiß)   RmS|X"zc  
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Technology:  ThinGaN     5 o:VixZf  
Typ. efficiency:  93 lm/W   XL[/)lX{  
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soldering methods:  Reflow soldering csn/h$`-@  
Preconditioning:  JEDEC Level 4 according to JEDEC S-STD-020-D   q6A!xQs<  
Taping:  24 mm tape with 200/reel, Ø 180 mm   R=M"g|U6  
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