MIRROR-LENS OBJECTIVE Russian patent published in 1995 - IPC

FIELD: optical systems. SUBSTANCE: mirror-lens objective has single-lens compensator which has central part and annular concentric mirror-reflecting covering at its other optical surface. The compensator is mounted in sequence at optical axis along the path of the beam, together with Mangene mirror, field aberrations positive double-lens compensator. The latter is made in form of positive lens and negative meniscus, which is turned with its concavity to focal plane of the objective. Positive meniscus is mounted in front of positive single-lens compensator at the axis of the objective. The meniscus is turned with its concavity to the compensator and forms the objective together with its central part for forming laser radiation. EFFECT: improved reliability of operation; improved efficiency. 1 dwg