[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 4V"E8rUL(  
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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 &L3M]  
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Feature of the device:  high efficient lightsource at low space AI2~Jp  
Color coordinates:  x = 0.31, y = 0.32 CIE 1931 (weiß)   IM*y|UHt  
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Viewing angle at 50 % IV:  170°   2bz2KB5>  
Technology:  ThinGaN     I2XU(pYU  
Typ. efficiency:  93 lm/W   pG_;$8Hc  
Grouping parameter:  luminous flux color coordinates OUE(I3_  
soldering methods:  Reflow soldering aI'&O^w+  
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substitution of micro incandescent lamps "> ypIR<  
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