Achromatic lens system

Details Achromatic lens system Achromatic lens system

1997-11-14

1999-06-15

Epps, Georgia

Optical: systems and elements

Lens

With graded refractive index

359652, G02B 300

Patent

active

059127708

ABSTRACT:
An achromatic lens system which comprises a radial type gradient index lens which has a refractive index varying in a direction perpendicular to an optical axis and a diffraction type lens, and sufficiently corrects the secondary spectrum with a small number of optical elements.

REFERENCES:
patent: 4934798 (1990-06-01), Bunch
patent: 5235464 (1993-08-01), Tsuchida
patent: 5412506 (1995-05-01), Feldblum et al.
Applied Optics/ vol. 27, No. 4/ Jul. 15, 1988 Hybrid Diffractive-Refractive Lenses and Achromats, Thomas Stone et al. pp. 2960-2971.

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