Gradient index lens system

Details Gradient index lens system Gradient index lens system

1995-08-10

1997-04-22

Epps, Georgia Y.

Optical: systems and elements

Lens

With graded refractive index

G02B 300

Patent

active

056233701

ABSTRACT:
A radial gradient index lens system has a refractive index distribution. The refractive index decreases from an optical axis along a height. The lens system has two meniscus lens elements whose convex surfaces have a larger radius of curvature than concave surfaces. The meniscus lens elements are arranged symmetrically with respect to an aperture stop so that the convex surfaces thereof face an object side and an image side, respectively. The gradient index lens system is for use in a copying apparatus or as a reading optical system.

REFERENCES:
patent: 4762403 (1988-08-01), Hattori
patent: 4830476 (1989-05-01), Aoki
patent: 4974947 (1990-12-01), Kitagishi et al.
patent: 5046833 (1991-09-01), Tsuchida
patent: 5117308 (1992-05-01), Tsuchida et al.
patent: 5172272 (1992-12-01), Aoki
patent: 5184251 (1993-02-01), Tsuchida et al.
patent: 5235464 (1993-08-01), Tsuchioa
Design of Optical Systems Using Radial Grin Lenses, Norihiko Aoki et al., Olumpus Optical Co., Ltd., T. Morokuma Research Lab, 1991.
"Design of a Gradient-Index Photographic Objective", L. G. Atkinson et al. Applied Optics, vol. 21, No. 6, Mar. 15, 1982.

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