Chemical Imaging Explosives (CHIMED) Optical Sensor using SWIR
First Claim
1. A method comprising:
- illuminating a sample to thereby generate a plurality of first interacted photons selected from the group consisting of;
photons absorbed by the sample, photons reflected by the sample, photons emitted by the sample, photons scattered by the sample, and combinations thereof;
assessing said plurality of first interacted photons using a visible imaging device, wherein said assessing comprises obtaining a visible data set representative of said sample;
analyzing said visible data set to thereby identify an area of interest in the sample;
illuminating said area of interest to thereby generate a plurality of second interacted photons selected from the group consisting of;
photons absorbed by the sample, photons reflected by the sample, photons emitted by the sample, photons scattered by the sample, and combinations thereof;
assessing said plurality of second interacted photons using a spectroscopic imaging device, wherein said assessing comprises obtaining a SWIR data set representative of said area of interest of said sample;
searching a SWIR database in accordance with the SWIR data set in order to identify a known SWIR data set from said SWIR database, wherein said SWIR database contains a plurality of known SWIR data sets, and wherein each known SWIR data set is associated with a known explosive compound; and
identifying an explosive compound in the area of interest based on the known SWIR data set identified by said searching.
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Accused Products
Abstract
A sample is illuminated to thereby generate a plurality of first interacted photons selected. The first interacted photons are assessed using a visible imaging device to thereby determine an area of interest in the sample. The area of interest is illuminated to thereby generate a plurality of second interacted photons. The second interacted photons are assessed using a spectroscopic device to thereby generate a SWIR data set representative of said area of interest. A database is searched wherein said database comprises a plurality of known SWIR data sets associated with an explosive material. The data sets comprise at least one of: a plurality of SWIR spectra and a plurality of spatially accurate wavelength resolved SWIR images. An explosive material in the area of interest is thereby identified as a result of the search.
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Citations
26 Claims
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1. A method comprising:
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illuminating a sample to thereby generate a plurality of first interacted photons selected from the group consisting of;
photons absorbed by the sample, photons reflected by the sample, photons emitted by the sample, photons scattered by the sample, and combinations thereof;assessing said plurality of first interacted photons using a visible imaging device, wherein said assessing comprises obtaining a visible data set representative of said sample; analyzing said visible data set to thereby identify an area of interest in the sample; illuminating said area of interest to thereby generate a plurality of second interacted photons selected from the group consisting of;
photons absorbed by the sample, photons reflected by the sample, photons emitted by the sample, photons scattered by the sample, and combinations thereof;assessing said plurality of second interacted photons using a spectroscopic imaging device, wherein said assessing comprises obtaining a SWIR data set representative of said area of interest of said sample; searching a SWIR database in accordance with the SWIR data set in order to identify a known SWIR data set from said SWIR database, wherein said SWIR database contains a plurality of known SWIR data sets, and wherein each known SWIR data set is associated with a known explosive compound; and identifying an explosive compound in the area of interest based on the known SWIR data set identified by said searching. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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illuminating a sample to thereby generate a plurality of first interacted photons selected from the group consisting of;
photons absorbed by the sample, photons reflected by the sample, photons emitted by the sample, photons scattered by the sample, and combinations thereof;assessing said first interacted photons using a spectroscopic imaging device, wherein said assessing comprises obtaining a SWIR data set representative of said sample; searching a SWIR database in accordance with the SWIR data set in order to identify a known SWIR data set from said SWIR database, wherein said SWIR database contains a plurality of known SWIR data sets, and wherein each known SWIR data set is associated with a known explosive compound; and identifying an explosive compound in the sample based on the known SWIR data set identified by said searching. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A method comprising:
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illuminating a sample to thereby obtain a visible image representative of said sample; determining whether a suspicious substance is present in said sample and a location of said substance in said sample based on said visible image of said sample, wherein said suspicious substance is selected from the group consisting of;
a chemical substance, a biological substance, a hazardous substance, and combinations thereof;illuminating said location on said sample to thereby generate interacted photons selected form the group consisting of;
photons absorbed by the sample, photons reflected by the sample, photons emitted by the sample, photons scattered by the sample, and combinations thereof;obtaining a SWIR signature of said suspicious substance based on said interacted photons; and identifying said suspicious substance based on a comparison of said SWIR signature with a SWIR database containing a plurality of SWIR signatures associated with a corresponding plurality of known explosive materials. - View Dependent Claims (23)
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24. A system comprising:
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an illumination source to illuminate at least one of the sample and an area of interest in the sample to thereby generate a plurality of first interacted photons selected from the group consisting of;
photons absorbed by the sample, photons reflected by the sample, photons emitted by the sample, photons scattered by the sample, and combinations thereof;a tunable filter through which said interacted photons are passed, wherein said tunable filter is selected from the group consisting of;
a multi-conjugate tunable filter, a Fabry Perot angle tuned filter, an acousto-optic tunable filter, a liquid crystal tunable filter, a Lyot filter, an Evans split element liquid crystal tunable filter, a Solc liquid crystal tunable filter, a fixed wavelength Fabry Perot tunable filter, an air-tuned Fabry Perot tunable filter, a mechanically-tuned Fabry Perot tunable filter, and a liquid crystal Fabry Perot tunable filter.a spectroscopic imaging device for assessing said interacted photons to thereby generate a SWIR data set representative of at least one of said sample and said area of interest in said sample; and a SWIR database having a plurality of known SWIR data sets, wherein each known SWIR data set is associated with one or more of the following;
a known explosive compound, a formulation additive of explosive material, a binder of explosive material, and combinations thereof. - View Dependent Claims (25, 26)
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Specification