Right angle reflector

An optical component that makes several different refractive surfaces on the same transparent mirror is called a reflecting prism

reflecting prisms play an important role in optical components, such as rotating the optical axis, turning, reversing, etc. Since the total reflection of the mirror has almost no energy loss, it is not easy to deform and easy to adjust. Therefore, in optical instruments, right angle reflecting prisms are often used to replace plane mirrors

a right angle reflecting prism is equivalent to a single-sided mirror, which mirrors objects. Isosceles right angle prism is the most commonly used one. The two right angle planes, bc plane and CD plane, are called the incident plane of the human body and the outgoing plane of the prism. The optical axis of the optical system must pass through the center of these two planes in a straight line, so the prism deflects the optical axis at a right angle

here, the entry surface, the refraction surface and the exit surface are all called the operation surface of the prism. The convergence line of the operating surface is called the edge line or edge, and the section directly to the edge line is called the main cross section of the prism. The optical axis should be on the main cross section. If the optical axis needs to rotate several angles after one refraction. According to the law of reflection and the geometric relationship, it is easy to draw or calculate the top corner reflection prism of this right angle