is a specially designed aspheric optical prism, mainly used to convert Gaussian beams (such as laser beams) into linear light spots evenly distributed along a straight line. Unlike traditional ...

When a ray of light is incident at normal incidence, (at right angles), to the surface between two optical materials, the ray travels in a straight line ... explains why a prism can disperse ...

The ingenious solution to providing light while eliminating the fire risk was a deck prism. The glass prism, which could be laid flush into the deck or hung from the ceiling under a small opening ...