This article summarizes the character of isosceles right-angle prism of missile aiming system, gives the isosceles right-angle prism s reflection equation based on the law of reflection and the refraction of light beam in vector form,and analyzes the application to the ballistic missile aiming.

An innovative gain module is employed to improve the performance of heat-conduct cooled asymmetric laser,which consists of a Nd∶YAG rod pumped by a semicylidrically arranged LD array,and right-angle prism as the mirror,leading to a highly stable output with a high quality.

The automatic test of Corner Cube Reflector (CCR), Roof Prism and Right-angle Prism is achieved by calculating the wavefront got from the digital phase-shifting interferometer.

Atmospheric extinction coefficient is measured with the cell,which is constructed with two same rectangular prisms,and then the visibility is decided by Koschmieder′s law.

With measuring principle that rectangular prism can con- vert the angle into the linear displacement by laser scanning.

The direction of the sensitive axis in the inertial guidance platform is determined by the right angle prism,and the accruacy of the azimuth aiming is influenced by assembled error of prism combination.

The right prism composite resonator has the excellent function of transverse mode selection of cross over right prism resonator and the better characteristic of axial mode selection,therefore it makes one of optimum resonators.