Uniformly intense imaging by close-packed lens array

Details Uniformly intense imaging by close-packed lens array Uniformly intense imaging by close-packed lens array

1982-07-02

1984-05-08

Arnold, Bruce Y.

Photocopying

Contact printing

Light boxes

354 5, 355 1, G02B 514, G03B 2700

Patent

active

044471262

ABSTRACT:
An improved optical printing head is described including a linear array of light sources, and a lens array comprised of graded index optical fibers arranged in a hexagonal close-packed array, there being at least three rows of individual fiber lenses. The linear array of light sources is aligned with, and parallel to, lines of symmetry of the graded index lens array, where the lines of symmetry are defined as lines along said graded index lens array which will transmit a line of light incident thereon with a minimum deviation in the intensity of light transmitted through the lens array. A photosensitive surface on a rotating drum is provided onto which light images from the optical printhead are incident. The print head can be used in optical printing machines.

REFERENCES:
patent: 3279903 (1966-10-01), Siegmund
patent: 3952311 (1976-04-01), Lapeyre
patent: 4264130 (1981-04-01), Ogura
patent: 4345833 (1982-08-01), Siegmund

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