Document-imaging illumination with fibre-optic intensity-adjust

Details Document-imaging illumination with fibre-optic intensity-adjust Document-imaging illumination with fibre-optic intensity-adjust

1989-10-10

1991-03-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250223R, 25022724, G06K 710, G01N 904

Patent

active

050031899

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: 3928759 (1975-12-01), Sansone
patent: 4264202 (1981-04-01), Gugliotta et al.
patent: 4326258 (1982-04-01), de la Guardia
patent: 4460826 (1984-07-01), Pryor
patent: 4592090 (1986-05-01), Curl et al.
patent: 4749250 (1988-06-01), Carter
patent: 4758715 (1988-07-01), Stamm
patent: 4821332 (1989-04-01), Durham

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