When multiple of these lenticular sheets with different lens distributions are layered in just the right way, they are able to refract light at a myriad different angles to create " dead spots " .

将许多这种在不同位置配有透镜的柱状透镜以适当的方式分层堆放，就能折射出千千万万种光线角度，从而制造视觉" 死角" 。