Luminescence characteristics detector

Details Luminescence characteristics detector Luminescence characteristics detector

2006-04-18

2006-04-18

Hannaher, Constantine (Department: 2884)

Radiant energy

Coded record and readers; invisible radiant energy type

C250S458100, C250S459100

Reexamination Certificate

active

07030371

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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