Line illuminator

Details Line illuminator Line illuminator

1978-08-10

1980-02-26

Griffin, Donald A.

Photocopying

Including fiber optics

355 11, 355 67, G03B 2700, G03B 2754, G03G 1500

Patent

active

041903471

ABSTRACT:
An illuminator for a line-scanning document copier including a fan-shaped array of optical fibers with light-output ends juxtapositioned along a line, and opposite light-receiving ends tightly bundled together. Light loss from fiber breakage, gaps and other defects inherent in fiber optic arrays cause non-uniform illumination of documents and streaks in the copy. Uniform and high level illumination are accomplished according to this invention with cylindrical light-refracting means placed between the line of fibers and the document to blend emitted light astigmatically.

REFERENCES:
patent: 3148581 (1964-09-01), Lehmann
patent: 3398669 (1968-08-01), Hicks
patent: 3535036 (1970-10-01), Starkweather
patent: 3717531 (1973-02-01), Smith
patent: 3792964 (1974-02-01), Chatterji
patent: 3811770 (1974-05-01), Baus et al.
patent: 3933556 (1976-01-01), Strack
patent: 3982829 (1976-09-01), Hirth
patent: 4070089 (1978-01-01), Grafton

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