Optical waveguides – Optical fiber bundle – Imaging
Patent
1994-09-29
2000-01-04
Ullah, Akm E.
Optical waveguides
Optical fiber bundle
Imaging
G02B 606
Patent
active
060118881
ABSTRACT:
A gradient index lens assembly is formed by joining a plurality of separate lens arrays end to end to form a lens array assembly of extended length. This concept is especially useful in machines for copying large documents where lens arrays of up to 36 inches in length are required. A single lens array of this length is expensive to manufacture but can be approximated by three shorter 12-inch lenses at a fraction of the price of the single, unitary lens. Each of the plurality of the lens arrays are masked at their end, the mask overlapping the end fibers. The lens arrays are joined together in an alternate staggered configuration so that light transmitted through each lens array is optically coupled or stitched at the interfaces to optically form a single, continuous line of exposure at an image plane.
REFERENCES:
patent: 4147928 (1979-04-01), Crean et al.
patent: 4397409 (1983-08-01), Fantuzzo et al.
patent: 4742240 (1988-05-01), Yamanishi et al.
patent: 5260718 (1993-11-01), Rommelmann et al.
James D. Rees and William Lama, Some Radiometric Properties of Gradient-Index Fiber Lenses, (Applied Optics, vol. 19, No. 7, Apr. 1, 1980, pp. 1065-1069).
Sakmyster J. R.
Ullah Akm E.
Xerox Corporation
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