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台灯国a和国aa的区别
更新时间： 2020-11-26 16:57:42  

区别在于亮度要求不同。台灯国a和国aa的主要区别就在于亮度要求不同，国a的标准要求30公分之内的光照度在250以上，而离圆心半径50公分之内，光光照度在150LX以上。国aa的标准是30公分之内的亮度在500LX以上，而离圆心半径50公分之内，光照度在300LX以上。我们都知道，光照度不够的话，十分影响视力。一般情况下，最佳视觉光环境，就是光源离桌面40厘米时，光照度保持750-1500勒克斯。

关键词： 台灯 aa 区别

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