CATADIOPTRIC LENS Russian patent published in 1994 - IPC

Abstract RU 2012907 C1

FIELD: optical systems. SUBSTANCE: lens has negative meniscus whose concave part faces object whose second surface in central region functions as second mirror, positive meniscus (Mangin mirror) whose concave part faces object whose first surface is glued in central region with negative meniscus and its second surface functions as mirror in peripheral region, and negative correcting meniscus whose concave part faces object. Correcting meniscus is located behind Mangin mirror. EFFECT: improved design. 1 dwg

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RU 2 012 907 C1

Authors

Shcheglov S.I.

Dates

1994-05-15—Published

1991-06-03—Filed