optical prism

Pyramid, also known as retroreflective mirror, has three mutually perpendicular reflecting surfaces. Regardless of the incident angle, the reflected light is always parallel to the incident light, and the reflection angle is always maintained at 180 degrees. This is a very useful feature that can be used to ensure a 180-degree reflection angle when the prism cannot be accurately aligned. The reflection imaging is inverted and reversed. Based on its characteristics, pyramids are often used in long-distance measurement, optical signal analysis and laser equipment.