OCULAR WIDE-ANGLED SYSTEM Russian patent published in 2001 - IPC

FIELD: optical instrument engineering. SUBSTANCE: the ocular wide-angled system has successively arranged in the optical axis from the space of the entrance pupil: the first component cemented together of biconcave and biconvex lenses, the second component in the form of a solitary positive meniscus, whose convexity faces the space of the entrance pupil with an aspherical second surface, and the third component cemented together of biconvex and biconcave lenses. EFFECT: improved aberration correction at an increased distance of removal of the entrance and exit pupils. 1 dwg, 1 appendix