[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'|N.,  
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加了透镜的话，就要看规格书了

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substitution of micro incandescent lamps CP5vo-/)-  
indoor and outdoor commercial and residential architectural lighting \my5E\  
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decorative and entertainment lighting (incl. fiber optic illumination) Y.7iKMp(  
signal and symbol luminaire '3<AzR2  
marker lights (e.g. steps, exit ways, etc.) M/Twtq-`H  
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