Luminescence characteristics detector
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United States of America Patent
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Apr 18, 2006
Grant Date -
Apr 1, 2004
app pub date -
Jan 26, 2002
filing date -
Mar 1, 2001
priority date (Note) -
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Abstract
Security documents or articles carrying luminescent marker compounds which show a time-deferred emission characteristic are authenticated by a method and device which allows for rapid extraction of characteristic luminescent parameters, such as emission intensity and time constants. The method is not sensitive to perturbations by ambient light and reduces optical filtering requirements.
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