Optical prism equilateral triangular prism

Triangular prism is abbreviated as prism. It is a triangular cylindrical body formed by the intersection of the planes of a transparent glass body. Generally, the main tangent surface is a triangle, and its structure is divided into planes, edges, apex angles, bottom, bottom and top lines. When the incident light passes through the prism, it is deflected and deflected, and the reflexed light is folded toward its bottom. Although the prism changes the direction of the light beam, it does not change its vergence, that is, it has no effect of gathering or dispersing light. If the incident light is parallel, it is also parallel when it exits the prism; the incident light is scattered light, and it is also scattered when it exits the prism.

Triangular prisms are optically transparent bodies with a triangular cross section. It is an optical instrument with a triangular cross-section made of transparent materials. It is a kind of dispersive prism, which can cause the polychromatic light to disperse when passing through the prism.