UNIT FOR FIXING LIGHT-REFLECTING PRISM Russian patent published in 1995 - IPC

FIELD: optical instrument engineering. SUBSTANCE: light-reflecting prism is made in form of tetrahedron with truncated vertexes of the base. Unit has case, onto support surface of which the prism is mounted. The prism is fixed onto the surface by spring-loaded unit, which is mounted for interaction with pressure screw. The screw is located in case. Three motionless jaws with guides are mounted uniformly along the circle onto support surface. Spring-loaded unit is provided with three two-boundary cavities, disposed along the same circle. The cavities are mounted for interaction with ribs of surrounding faces of the prism at their peripheral part. EFFECT: improved design. 2 cl, 4 cl, 6 dwg