光源单位lux与lx是怎么区分的? 两个都是勒克斯,照度单位,通用的勒克斯(lux,法定符号lx)照度单位,1 勒克斯等于 1流 (lumen,lm)的光通量均匀分布于 1㎡ 面积上. 1 lm的光通量均匀分布在1平方米的表面,即产生1勒克斯 (lux)的照度。 烛光 (candlepower) 是最早定义发光强度的单位,目前基本已弃用。 最早是以一磅白蜡制造出一尺长的蜡烛所燃放出.
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