Illumination device for product examination via pulsed illumination
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United States of America Patent
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Feb 2, 2010
Grant Date -
Mar 26, 2009
app pub date -
Nov 26, 2008
filing date -
Nov 29, 2006
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Abstract
An illumination device for use with a product inspection machine inspecting products according to at least one characteristic using pulsed illumination for inspection in two wavelengths. The invention includes a plurality of arrays of semiconductor light sources from which a wavelength may be selected, either specifically or by combination of specific semiconductor light sources, for impinging on passing product and at least one array of semiconductor light sources from which the same wavelength may be selected and which provides intensity equal to the plurality of arrays impinging on a background surface for detection and comparison.
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