OPTICAL SYSTEM Russian patent published in 2007 - IPC G02B17/08 

FIELD: optics.

SUBSTANCE: optical system includes mirror-lens objective, containing following parts positioned along the movement of beam: positive lens, Mangin mirror, secondary spherical mirror, combined with second surface of positive lens, and lens compensator composed of four components, and also an objective positioned additionally on optical axis of mirror-lens objective in aperture made in central part of positive lens, which objective is composed of four components, first one of which is made in form of negative double-glued lens, composed of biconcave lens and positive meniscus, second component - in form of positive meniscus, which faces object space with concave surface, third component - in form of negative double-glued lens, consisting of biconcave and biconvex lenses, fourth one - in form of a biconvex lens. In lens compensator the first component is made in form of negative meniscus, which faces image space with its concave surface, second one - in form of biconvex lens, third and fourth ones - in form of flat-concave and flat-convex lenses respectively. Flat-convex lens is mounted with possible movement perpendicularly to optical axis for stabilization of image.

EFFECT: provision of two fields of vision, increased relatively aperture with simultaneous preservation of high image quality.

2 cl, 3 dwg