Divided-aperture infra-red spectral imaging system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01J-003/28
G01J-003/02
G01N-021/3504
G01J-003/36
G01J-005/00
출원번호
US-0539899
(2014-11-12)
등록번호
US-9599508
(2017-03-21)
발명자
/ 주소
Kester, Robert Timothy
Hagen, Nathan Adrian
출원인 / 주소
Rebellion Photonics, Inc.
대리인 / 주소
Knobbe Martens Olson & Bear LLP
인용정보
피인용 횟수 :
4인용 특허 :
18
초록▼
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 o
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.
대표청구항▼
1. An infrared (IR) imaging system for identifying target species in an object, the imaging system comprising: an optical system including an optical focal plane array (FPA) unit, the FPA unit comprising a microbolometer, the optical system configured to receive IR radiation from the object along at
1. An infrared (IR) imaging system for identifying target species in an object, the imaging system comprising: an optical system including an optical focal plane array (FPA) unit, the FPA unit comprising a microbolometer, the optical system configured to receive IR radiation from the object along at least two optical channels defined by components of the optical system, said at least two optical channels being spatially and spectrally different from one another;a movable temperature reference at a known temperature, the movable reference configured to be inserted into an optical path from the object to the FPA unit along at least one of the two optical channels to block IR radiation and configured to be removed from the optical path; anda processor configured to acquire multispectral optical data representing said target species from the received IR radiation,wherein the processor is configured to map an overall image datacube representing spatial distribution of concentrations c of the target species. 2. The system of claim 1, wherein the FPA unit does not require cooling during normal operation. 3. The system of claim 1, wherein the IR radiation comprises wavelengths between about 1 micron and about 20 microns. 4. The system of claim 1, wherein the system is configured to identify target species in a gas cloud. 5. The system of claim 1, further comprising at least two spectral filters, each filter positioned in a respective one of said optical channels. 6. The system of claim 5, wherein the spectral filters comprise at least one long pass (LP) filter. 7. The system of claim 5, wherein the spectral filters comprise at least one short pass (SP) filter. 8. The system of claim 5, further comprising at least two reimaging lenses, each reimaging lens positioned to transmit a portion of the IR radiation transmitted through a respective one of said spectral filters towards the optical FPA unit. 9. The system of claim 1, further comprising an optical aperture that circumscribes said at least two spatially and spectrally distinct optical channels. 10. The system of claim 1, wherein the movable temperature reference comprises a first shutter at a first temperature and a second shutter at a second temperature. 11. The system of claim 1, wherein the movable temperature reference comprises a system having a first portion at a first temperature and a second portion at a second temperature. 12. The system of claim 1, wherein the processor is configured to calibrate the FPA unit based on the known temperature. 13. The system of claim 1, wherein the processor is configured to acquire multispectral optical data in a single occurrence of data acquisition. 14. A method of operating an infrared (IR) imaging system, comprising: receiving IR radiation from an object along at least two optical channels defined by components of an optical system of the IR imaging system, said at least two optical channels being spatially and spectrally different from one another;transmitting the received IR radiation towards an optical focal plane array (FPA) unit, the FPA unit comprising a microbolometer;inserting a movable temperature reference into an optical path from the object to the FPA unit along at least one of the two optical channels to block IR radiation, wherein the movable temperature reference source is configured to be removed, and wherein the movable temperature reference source is at a known temperature; andunder the control of an electronic processor, mapping an overall image datacube representing spatial distribution of concentrations c of the target species. 15. The method of claim 14, wherein the FPA unit does not require cooling during normal operation. 16. The method of claim 14, wherein transmitting the received IR radiation includes transmitting the received IR radiation through at least two spectral filters, each spectral filter positioned in a respective one of said optical channels. 17. The method of claim 16, wherein each spectral filter includes one of a longpass optical filter or a shortpass optical filter. 18. The method of claim 14, further comprising acquiring, multispectral optical data representing the object from the IR radiation transmitted towards the optical FPA unit in a single occurrence of data acquisition with a programmable processor. 19. The method of claim 14, further comprising calibrating the FPA unit based on the known temperature.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (18)
Fraden Jacob (La Jolla CA), Apparatus and method for temperature measurement by radiation.
Murguia, James E.; Nelson, Richard J., Simultaneous spectral imaging system including commonly filtered optical paths defined by focusing elements exhibiting disparate f-numbers.
Holland,Stephen Keith; Krauss,Roland H.; Childers, IV,James M.; Laufer,Gabriel, System and method for remote sensing and/or analyzing spectral properties of targets and/or chemical species for detection and identification thereof.
Benson, Robert G.; Scanlon, Thomas J.; Czerepuszko, Paul A., Thermography camera tuned to detect absorption of infrared radiation in a selected spectral bandwidth.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.