[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 n:8<Ijrh  
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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 T(z/Jm3  
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soldering methods:  Reflow soldering :soR7oHZ  
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substitution of micro incandescent lamps y1bo28  
indoor and outdoor commercial and residential architectural lighting l\_81oZ  
display backlight where high brightness is required e.g. TFT B'hN3.  
decorative and entertainment lighting (incl. fiber optic illumination) t8f:?  
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