[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 Wp+lI1t  
W -HOl!)  
加了透镜的话，就要看规格书了

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Package:  white SMT package, colorless clear silicone resin clear silicone lens chip level conversion 4M>pHz4  
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Feature of the device:  high efficient lightsource at low space 8t=O=l\  
Color coordinates:  x = 0.31, y = 0.32 CIE 1931 (weiß)   2O@ON/  
Color temperature (typ.):  6500 K   *3E3,c8{A  
Viewing angle at 50 % IV:  170°   ZMZWO$"K1  
Technology:  ThinGaN     5._QI/d)'J  
Typ. efficiency:  93 lm/W   n0gjcDHQ  
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soldering methods:  Reflow soldering a%BC{XX  
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