illumination level

基本解释

On top of that, the way chips are made requires the incoming light to pass through circuitry that has been deposited on to the silicon, reducing the level of illumination.
此外，芯片的制作工艺也需要入射光线通过淀积在硅片上的电路，这使得光照度（光源照射在被照物体单位面积上的光通量）降低。
my1510.cn
This method uses at least two light sensor measurements to derive information concerning both the ambient light levels and the illumination source output level for known drive conditions.
该方法使用至少两次光传感器测量，对于已知驱动条件得出有关环境光照水平和照明源输出水平二者的信息。
ip.com
The first and second detected light levels are processed to derive a first value representing the ambient light level and a second value representing the illumination source output level.
对于第一和第二检测出的光照水平进行处理，得出表示环境光照水平的第一值和表示照明源输出水平的第二值。
ip.com

On top of that, the way chips are made requires the incoming light to pass through circuitry that has been deposited on to the silicon, reducing the level of illumination.
ECONOMIST: Camera-phones