How strongly each scatters is determined by what is inside each unit cell. 各个散射的强度则由每个晶胞内有什么来决定。
In one implementation the photodiodes within each unit cell are essentially identical photodiodes but with different exposure times. 在实行中,每单位晶胞内的光电二极体基本上为相同的光电二极体,但却具有不同的曝光时间。