CATADIOPTRIC LENS Russian patent published in 1997 - IPC

FIELD: applicable as a lateral telescope, for instance in navigation. SUBSTANCE: catadioptric lens has a concave mirror and an aberration compensator. In addition, it uses a right-angle prism with a cover. The aberration compensator is a block consisting of two right-angle prisms connected in hypotenuse faces and forming a plane-parallel plate, doublet lens component and a flat-convex lens. The hypotenuse face of one of the prisms is made as a reflecting one, its center is located on the optical axis of the concave mirror. EFFECT: improved design. 2 dwg