Method and apparatus for improving image quality of a reduction/

Details Method and apparatus for improving image quality of a reduction/ Method and apparatus for improving image quality of a reduction/

1981-11-02

1984-03-06

Moore, David K.

350 9624, 350 9631, G02B 516

Patent

active

044350392

ABSTRACT:
A reduction/enlargement gradient index lens array is modified to improve image quality and exposure at an imaging plane. In one embodiment, a masking element is placed in the optical path so as to permit minimum light transmitted through optical fibers located at the array ends and maximum light transmitted through the array center. In a second embodiment, a field stop is formed within the body of each fiber to accomplish the same end.

REFERENCES:
patent: 151994 (0000-01-01), Rees
patent: 3658407 (1972-04-01), Kitano et al.
patent: 3922062 (1975-11-01), Uchida
patent: 3947106 (1976-03-01), Hamaguchi et al.
patent: 3977777 (1976-08-01), Tanaka et al.
patent: 4258978 (1981-03-01), Cole
patent: 4331380 (1982-05-01), Rees et al.
"Gradient Index Optics: a review"; D. T. Moore; Applied Optics; Apr. 1, 1980; vol. 19, No. 7; pp. 1035-1038.

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