A unit of retinal illumination,equal to the amount of light that reaches the retina through1 square millimeter of pupil area from a surface having a brightness of1 candela per square meter.

 
  • 光度视网膜亮度单位,相当于每平方米有一烛光亮度的表面,通过一平方毫米的瞳孔区域,到达视网膜的光线数量
今日热词
目录 附录 查词历史