Relay lens e.g. catadioptric microscope objectives, for use with pupil relay system for e.g. projection of pupil, has concave and convex mirrors arranged such that rays path is reflectable at concave mirror and at convex mirror

摘要

The lens has a concave mirror (15) and a convex mirror (16) i.e. mangin mirror, arranged with each other such that a rays path is reflectable at the concave mirror and at the convex mirror and vice versa. Refraction power-loose lenses (18, 19) or plates having an aspherically designed surface are arranged in the rays path. One of the lenses is made of dispersive material. The other lens is made of calcium fluoride. The mirrors are designed such that an intermediate image is formed in the concave mirror after the reflections of the mirrors, respectively.