Gradient index lens array having reduction properties

Details Gradient index lens array having reduction properties Gradient index lens array having reduction properties

1980-05-21

1982-05-25

Lee, John D.

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Contact printing

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350413, 350417, 350 9631, 355 1, G02B 516

Patent

active

043313809

ABSTRACT:
A gradient index lens array is provided with reduction and enlargement capabilities. Gradient index fibers are arranged in single row or double row (bundled) configuration with fibers increasingly departing from the perpendicular condition at the center of the array relative to object and image planes in a characteristic fan-like manner. Fiber lengths are adjusted to compensate for changes in total conjugate which occur because of the progressive tilting of the axes of the individual fiber lenses. This is achieved, in one embodiment, by grinding the faces of a lens array into a convex configuration.

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Lindberg, "Fiber Optic Magnifier", IBM Tech. Discl. Bulletin, vol. 9, No. 12, May 1967, pp. 1751-1752.
Kapron, "Geometrical Optics of Parabolic Index-Gradient Cylindrical Lenses", J.O.S.A., vol. 60, No. 11, Nov. 1970, pp. 1433-1436.
Moore, "Gradient-Index Optics: A Review", Applied Optics, vol. 19, No. 7, Apr. 1980, pp. 1035-1038.
Rees et al, "Some Radiometric Properties of Gradient-Index Fiber Lenses", Applied Optics, vol. 19, No. 7, Apr. 1980, pp. 1065-1069.

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