Methods for document illumination

Details Methods for document illumination Methods for document illumination

1994-11-14

1995-06-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250226, H01J 4014

Patent

active

054224748

ABSTRACT:
A check Sorter-Imager-Processor with two (or more) imaging sites, each lit by a beam through a fibre-optic array, with a lens focusing the beam on each array such that a shift in lens-focus reduces output light from the array,--the two sites being thus "matched" in light-intensity by merely focus-adjusting these lenses.

REFERENCES:
patent: 4592090 (1986-05-01), Curl et al.

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