Research on special prism processing craft

Sphere-prism is one of the elements often used in an off axis optical system. Reasonably using a sphere-prism, a series of optical systems with different applications can be designed. These systems have the advantages of small size, less weight and compact structure, and have some optical features which are hardly achieved by a centered optical system, expanding the applications of optical system. In this paper, the technology of making a sphere-prism, a new optical element, is described. At first we make the sphere surface, ans then we make the plane section of a sphere-prism. The professional optical instrument is used to guarantee the angular accuracy in the work of making the plane section. A binocular comparison goniometric angulometer 48°and 90°mater prisms are used to detect the position of spherical center. In the end, a plan that making the spherical section firstly and making the plane section lately is put forward to make sphere-prism. Finally , we give out the fabrication result of the sphere-prism.