Granted Patent
B2
US 12,411,042 · App. 18/520,284 · Granted Sep 9, 2025
Divided-aperture infra-red spectral imaging system
Assignee:
Rebellion Photonics, Inc.
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Abstract
Various embodiments disclosed herein describe a divided-aperture infrared spectral imaging (DAISI) system that is adapted to acquire multiple IR images of a scene with a single-shot (also referred to as a snapshot). The plurality of acquired images having different wavelength compositions that are obtained generally simultaneously. The system includes at least two optical channels that are spatially and spectrally different from one another. Each of the at least two optical channels are configured to transfer IR radiation incident on the optical system towards an optical FPA unit comprising at least two detector arrays disposed in the focal plane of two corresponding focusing lenses. The system further comprises at least one temperature reference source or surface that is used to dynamically calibrate the two detector arrays and compensate for a temperature difference between the two detector arrays.
Claims (24)
1. An infrared imaging system for imaging a target species, the infrared imaging system comprising:
an optical system defining a plurality of spatially and spectrally different optical channels that transfers infrared radiation from the target species to a plurality of optical focal plane array units; and
a processor configured to execute instructions stored in a tangible, non-transitory computer-readable storage medium to:
acquire multispectral optical data representing the target species from the optical system; and
compensate for motion-induced error in the multispectral optical data.
2. The infrared imaging system of claim 1 , wherein spectral sensitivities to the target species associated with at least two optical focal plane array units of the plurality of optical focal plane array units are substantially equal.
3. The infrared imaging system of claim 2 , wherein the processor is configured to generate a temporal difference image based at least in part on a difference between optical data acquired from the at least two optical focal plane array units.
4. The infrared imaging system of claim 2 , wherein the at least two optical focal plane array units comprise visible light focal plane array units.
5. The infrared imaging system of claim 2 , wherein the at least two optical focal plane array units comprise infrared focal plane array units.
6. The infrared imaging system of claim 1 , wherein the optical system comprises a plurality of lenses, different lenses corresponding to different optical channels.
7. The infrared imaging system of claim 6 , wherein the plurality of lenses comprises a lens array.
8. The infrared imaging system of claim 1 further comprising a plurality of optical filters.
9. The infrared imaging system of claim 8 , wherein the plurality of optical filters comprises one or more long pass filters.
10. The infrared imaging system of claim 8 , wherein the plurality of optical filters comprises one or more short pass filters.
11. The infrared imaging system of claim 1 , wherein the plurality of optical focal plane array units comprises one or more bolometers that are configured to operate without being cooled.
12. The infrared imaging system of claim 1 , wherein the plurality of optical focal plane array units is devoid of a cooling device.
13. The infrared imaging system of claim 1 , further comprising one or more field references for dynamically adjusting the plurality of optical focal plane array units.
14. The infrared imaging system of claim 13 , wherein the one or more field references comprise an array of field stops.
15. The infrared imaging system of claim 13 , wherein each of the one or more field references comprises a surface having a uniform temperature.
16. The infrared imaging system of claim 13 , wherein each of the one or more field references is adapted to obscure or block a peripheral portion of the infrared radiation.
17. The infrared imaging system of claim 1 , wherein the processor is configured to acquire the multispectral optical data representing said target species in a single occurrence of data acquisition.
18. The infrared imaging system of claim 17 , wherein the multispectral optical data comprises a multispectral data cube, wherein the multispectral data cube comprises a plurality of spectrally different images.
19. The infrared imaging system of claim 1 , further comprising one or more moveable shutter.
20. The infrared imaging system of claim 1 , further comprising one or more temperature-controlled shutters.
Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Apr 15, 2025
From: HAGEN, NATHAN ADRIAN
To: REBELLION PHOTONICS, INC.
Reel/Frame 070844/0100 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 27, 2023
From: KESTER, ROBERT TIMOTHY
To: REBELLION PHOTONICS, INC.
Reel/Frame 065672/0415 →
Continuity (9)
Continuation In Part
PCTUS2013041278
· May 16, 2013
Provisional Application
61903075
· Nov 12, 2013
Provisional Application
61764776
· Feb 14, 2013
Provisional Application
61688630
· May 18, 2012
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