Trace evidence detection using multiple laser light sources

Details Trace evidence detection using multiple laser light sources Trace evidence detection using multiple laser light sources

2008-08-28

2009-11-10

Porta, David P (Department: 2884)

Radiant energy

Luminophor irradiation

Methods

Reexamination Certificate

active

07615761

ABSTRACT:
A method for detecting trace evidence materials on a surface comprises irradiating the surface with radiation from two or more lasers emitting radiation at different wavelengths selected to stimulate luminescence in the trace materials. The evidence is detected by observing the surface through an optical filter arranged to transmit the luminescence, while blocking transmission of the laser radiation wavelengths reflected or scattered from the surface.

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