Ocular lens

Details Ocular lens Ocular lens

1991-11-20

1994-05-17

Arnold, Bruce Y.

Optical: systems and elements

Lens

Eyepiece

359647, 359717, 359718, 359726, 354219, G02B 2500, G02B 1302, G02B 1318, G02B 1700

Patent

active

053133277

ABSTRACT:
In an ocular lens system for use with a penta-mirror, an ocular lens includes a positive meniscus lens whose concave surface is directed to the pupil side and whose convex surface is directed to the object. The concave and convex surfaces of the positive meniscus lens are aspherical. The two surface are shifted to the pupil side from reference spherical surfaces defined by paraxial radii of curvature.

REFERENCES:
patent: 4437750 (1984-03-01), Ikari
patent: 4730905 (1988-03-01), Takada
patent: 4926201 (1990-05-01), Mukai et al.
patent: 5034763 (1991-07-01), Inabata
patent: 5136427 (1992-08-01), Sugawara

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