This is made possible through something called a lenticular lens – a corrugated sheet in which each ridge is made up of a convex – or outward-curving – lens.

过一种叫做柱状透镜东西实现，柱状透镜一种波纹状薄板，其每个凸起处都由凸透镜（即向外弯曲透镜）组。

Chu demonstrated the " invisibility" at the event, and he made his legs disappear directly with the help of a magical material called " lenticular grating" that allows light to be refracted regularly.

褚在活动现场演示了 " 隐形" ，他借助一种名为 “柱镜光栅”神奇材料，让光线有规律地折射，直接让自己消失了。

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 " .

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