Methods and apparatus for molecular species detection, inspection and classification using ultraviolet to near infrared Enhanced Photoemission Spectroscopy
First Claim
1. A handheld photoemission spectroscopy detections system comprising:
- a. a miniature scanning detection system operating in the ultraviolet to near infrared portion of the electromagnetic spectrum comprising;
i. an excitation light source;
ii. a bandpass filter;
iii. a low-pass spectral filter;
iv. an ultraviolet fluorescence detector;
b. a processor coupled to the ultraviolet fluorescence detector, the processor receiving spectral data from the ultraviolet fluorescence detector; and
c. a database coupled to said processor that includes signature data for a plurality of predetermined chemical substances.
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Abstract
The invention relates generally to the field of substance and material detection, inspection, and classification at wavelengths between approximately 200 nm and approximately 1800 nm. In particular, a handheld Enhanced Photoemission Spectroscopy (“EPS”) detection system with a high degree of specificity and accuracy, capable of use at small and substantial standoff distances (e.g., greater than 12 inches) is utilized to identify specific substances (e.g., controlled substances, illegal drugs and explosives, and other substances of which trace detection would be of benefit) and mixtures thereof in order to provide information to officials for identification purposes and assists in determinations related to the legality, hazardous nature and/or disposition decision of such substance(s).
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Citations
16 Claims
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1. A handheld photoemission spectroscopy detections system comprising:
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a. a miniature scanning detection system operating in the ultraviolet to near infrared portion of the electromagnetic spectrum comprising; i. an excitation light source; ii. a bandpass filter; iii. a low-pass spectral filter; iv. an ultraviolet fluorescence detector; b. a processor coupled to the ultraviolet fluorescence detector, the processor receiving spectral data from the ultraviolet fluorescence detector; and c. a database coupled to said processor that includes signature data for a plurality of predetermined chemical substances. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification