CATADIOPTRIC LENS Russian patent published in 1997 - IPC

FIELD: applicable as a ground high-power telescope. SUBSTANCE: catadioptric lens has two mirrors, located in mutually perpendicular planes, and an aberration compensator consisting of a flat-convex lens and two right-angle prisms. The prisms are interconnected in hypotenuse faces forming a plane-parallel plate. The hypotenuse face of one of the prisms is made as a reflecting one, and its center is located in the intersection of the optical axes of the mirrors. EFFECT: improved design. 2 dwg