Say we have a lens that has a spherical face on both sides, known as a convex lens.

假有一个具有球面的镜头 两侧，称为凸镜。

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.

这是通过一种叫做镜的东西实现的，镜是一种波纹的薄板，其每个凸起处都由凸镜（即向外弯曲的镜）组成。