Right angle prism is a type of optical prism characterized by its triangular shape with one 90-degree angle and two 45-degree angles. It is typically made of transparent material such as glass or plastic and is used to reflect, deviate, or invert light depending on its application.

Right-angle prisms find applications in a wide range of optical systems and devices, including:

Image Reflection: Right-angle prisms are commonly used to reflect and redirect light beams in optical systems such as periscopes, cameras, and binoculars. They allow the user to view objects from different angles without changing the orientation of the optical system.

Beam Steering: Right-angle prisms are used in laser systems and optical communications to steer and manipulate the direction of laser beams or optical signals. They can be used to direct light beams around obstacles or into specific directions.

Alignment and Calibration: Right-angle prisms are used in optical alignment and calibration systems to adjust the orientation of optical components and devices. They provide a simple and effective means of redirecting light beams with high precision.

Crosshair Generation: Right-angle prisms are sometimes used to generate crosshairs or reticles in optical instruments such as telescopes and rifle scopes. By placing a reticle pattern on one surface of the prism, it can create a precise reference point for aiming or measurement purposes.