Optical: systems and elements – Lens – With graded refractive index
Patent
1996-07-22
1997-12-30
Nelms, David C.
Optical: systems and elements
Lens
With graded refractive index
359668, 359671, 359741, 359742, 359797, G02B 300, G02B 1308, G02B 308, G02B 900
Patent
active
057037221
ABSTRACT:
A segmented axial gradient array lens is provided. In one embodiment, the segmented array lens includes two sheets of optical material which mate at opposing faces which have a series of corresponding parallel grooves and ridges. At least one of the sheets has an axial gradient index of refraction profile. This provides the functionality of a series of parallel cylindrical lenses. The array lenses may include one or more additional intermediate sheets which may have a homogeneous or axial gradient index. With the first and last sheets having an axial gradient index of refraction, and the grooves forming the first and last interfaces between the sheets being rotated 90 degrees relative to each other, a two dimensional array of point foci can be provided. An array of cones and conical indentations can be used at the interfaces to provide the functionality of an array of spherical lenses. An array lens of the invention can be used to provide an optical multiplexer.
REFERENCES:
patent: 1943521 (1934-01-01), Ewald
patent: 2596799 (1952-05-01), Tillyer et al.
patent: 3393034 (1968-07-01), Imai
patent: 3712713 (1973-01-01), Appledorn
patent: 4501468 (1985-02-01), Borrelli et al.
patent: 4758071 (1988-07-01), McLaughlin et al.
patent: 4805997 (1989-02-01), Asahara et al.
patent: 4810070 (1989-03-01), Suda et al.
patent: 4900138 (1990-02-01), Atkinson, III et al.
patent: 4907864 (1990-03-01), Haterty et al.
patent: 4929065 (1990-05-01), Hagerty et al.
patent: 4934798 (1990-06-01), Bunch
patent: 4952037 (1990-08-01), Oikawa et al.
patent: 5044737 (1991-09-01), Blankenbecler
patent: 5236486 (1993-08-01), Blankenbecler et al.
patent: 5262896 (1993-11-01), Blankenbecler
patent: 5323268 (1994-06-01), Kikuchi
J.M. Stagman and D.T. Moore, "Laser diode to fiber coupling using anamorphic gradient-index lenses", Applied Optics, vol. 23, No. 11, Jun. 1, 1984, pp. 1730-1734.
C. Wang and D.L. Shealy, "Design of gradient-index lens systems for laser beam reshaping", Applied Optics, vol. 32, No. 25, Sep. 1, 1993, pp. 4763-4769.
Leo Levi, Applied Optics: A Guide to Optical System Design/Volume 1, 1968, pp. 488-493.
A.C.S. Van Heel, "One radius doublets", Opt. Acta, vol. 2, No. 1, Apr. 1955, pp.29-35.
R. Blankenbecler et al., "Gradient index glass of macro dimensions and large .increment.n", Journal of Non-Crystalline Solids, 129(1991) pp. 109-116.
Lester Evelyn A.
Mitchell Steven M.
Nelms David C.
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