System and method for safer detection of unknown materials using dual polarized hyperspectral imaging and Raman spectroscopy
First Claim
1. A system comprising:
- a first subsystem comprising;
a first collection optics configured to collect a first plurality of interacted photons from a first location comprising at least one unknown material, wherein the first plurality of interacted photons comprise optical components in a plurality of polarization alignments,a first polarization assembly configured to;
receive the first plurality of interacted photons,separate the first plurality of interacted photons into a first optical component and a second optical component, andtransmit the first optical component with a first polarization alignment and the second optical component with a second polarization alignment,a first optical filter configured to receive the second optical component and transmit at least a portion of the second optical component having a first wavelength,a second optical filter configured to receive the second optical component and transmit at least a portion of the second optical component having a second wavelength,at least one short wave infrared detector configured to detect at least one of the first optical component and the second optical component and generate a SWIR data set representative of the first location;
a second subsystem comprising;
an illumination source configured to illuminate a second location comprising at least one unknown material to generate a second plurality of interacted photons,a second collection optics configured to collect the second plurality of interacted photons,a fiber array spectral translator device, wherein the device further comprises a two-dimensional array of optical fibers drawn into a one-dimensional fiber stack so as to effectively convert a two-dimensional field of view into a curvilinear field of view, and wherein the two dimensional array of optical fibers is configured to receive a plurality of photons and transfer the photons out of the fiber array spectral translator device,a spectrometer comprising an entrance slit coupled to the one-dimensional end of the fiber stack, wherein the spectrometer is configured to generate a plurality of Raman spectra, anda Raman detector configured to detect the photons from the spectrometer and generate a Raman data set representative of the second location;
a third subsystem comprising;
a third collection optics configured to collect a third plurality of interacted photons from a third location,a long wave infrared detector configured to detect the third plurality of interacted photons and generate a LWIR data set representative of the third location.
1 Assignment
0 Petitions
Accused Products
Abstract
A first location comprising an unknown material may be scanned using SWIR hyperspectral imaging in a dual polarization configuration. Surveying may also be applied to thereby determine whether or not a human is present. This surveying may be achieved my assessing LWIR data, data acquired from motion sensors, and combinations thereof. If no human is present, a second location may be interrogated using Raman spectroscopic techniques to thereby obtain a Raman data set representative of the region of interest. This Raman data set may be assessed to associate an unknown material with a known material. This assessment may be achieved by comparing the Raman data set to one or more reference data sets in a reference database, where each reference data set is associated with a known material.
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Citations
36 Claims
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1. A system comprising:
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a first subsystem comprising; a first collection optics configured to collect a first plurality of interacted photons from a first location comprising at least one unknown material, wherein the first plurality of interacted photons comprise optical components in a plurality of polarization alignments, a first polarization assembly configured to; receive the first plurality of interacted photons, separate the first plurality of interacted photons into a first optical component and a second optical component, and transmit the first optical component with a first polarization alignment and the second optical component with a second polarization alignment, a first optical filter configured to receive the second optical component and transmit at least a portion of the second optical component having a first wavelength, a second optical filter configured to receive the second optical component and transmit at least a portion of the second optical component having a second wavelength, at least one short wave infrared detector configured to detect at least one of the first optical component and the second optical component and generate a SWIR data set representative of the first location; a second subsystem comprising; an illumination source configured to illuminate a second location comprising at least one unknown material to generate a second plurality of interacted photons, a second collection optics configured to collect the second plurality of interacted photons, a fiber array spectral translator device, wherein the device further comprises a two-dimensional array of optical fibers drawn into a one-dimensional fiber stack so as to effectively convert a two-dimensional field of view into a curvilinear field of view, and wherein the two dimensional array of optical fibers is configured to receive a plurality of photons and transfer the photons out of the fiber array spectral translator device, a spectrometer comprising an entrance slit coupled to the one-dimensional end of the fiber stack, wherein the spectrometer is configured to generate a plurality of Raman spectra, and a Raman detector configured to detect the photons from the spectrometer and generate a Raman data set representative of the second location; a third subsystem comprising; a third collection optics configured to collect a third plurality of interacted photons from a third location, a long wave infrared detector configured to detect the third plurality of interacted photons and generate a LWIR data set representative of the third location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
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surveying a first location comprising at least one unknown material, wherein surveying comprises; collecting a first plurality of interacted photons from a first location comprising at least one unknown material, wherein the first plurality of interacted photons comprise optical components in a plurality of polarization alignments, separating the interacted photons into a first optical component and a second optical component, transmitting the first optical component to a first optical filter and the second optical component to a second optical filter, passing the first optical the first optical component through a first optical filter configured to transmit at least a portion of the first optical component having a first wavelength, passing the second optical component through a second optical filter configured to transmit at least a portion of the second optical component having a second wavelength, and detecting the first optical component and the second optical component using at least one short wave infrared detector to generate at least a first SWIR data set representative of the first location and a second SWIR data set representative of the first location, analyzing at least one of the first SWIR data set and the second SWIR data set to identify a second location comprising the unknown material; targeting the second location, wherein targeting comprises; illuminating the second location to generate a second plurality of interacted photons using a laser illumination source; passing the second plurality of interacted photons through a fiber array spectral translator device, and detecting the second plurality of interacted photons and generating at least one Raman data set representative of the second location, and analyzing the Raman data set to thereby associate the unknown material with a known material. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification