Check imaging illumination with focus/defocus and fibre optic light guide means
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United States of America Patent
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May 17, 1994
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app pub date -
Jan 1, 1992
filing date -
Oct 10, 1989
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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.
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