Thermography camera tuned to detect absorption of infrared radiation in a selected spectral bandwidth
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-027/14
H04N-005/33
G01N-021/3518
H04N-005/225
H01L-031/18
G01J-003/28
G01J-003/02
G01J-005/12
H01L-031/0304
H01L-031/0352
G01J-005/08
G01J-005/06
G01N-021/17
G01N-021/3504
G01J-005/00
출원번호
US-0056960
(2016-02-29)
등록번호
US-9635284
(2017-04-25)
발명자
/ 주소
Benson, Robert G.
Scanlon, Thomas J.
Czerepuszko, Paul A.
출원인 / 주소
FLIR Systems, Inc.
대리인 / 주소
Haynes and Boone, LLP
인용정보
피인용 횟수 :
0인용 특허 :
55
초록▼
An infrared camera system is provided to detect absorption of infrared radiation in a selected spectral bandwidth. In one example, an infrared camera system includes a lens adapted to receive infrared radiation from a survey scene comprising one or more gasses. The infrared camera system also includ
An infrared camera system is provided to detect absorption of infrared radiation in a selected spectral bandwidth. In one example, an infrared camera system includes a lens adapted to receive infrared radiation from a survey scene comprising one or more gasses. The infrared camera system also includes a focal plane array comprising a plurality of quantum well infrared photo detectors (QWIPs). The QWIPs are tuned to detect a limited spectral bandwidth of the infrared radiation corresponding to at least a portion of an infrared absorption band of the one or more gasses. The infrared camera system also includes an optical band pass filter positioned substantially between the lens and the focal plane array. The optical band pass filter is adapted to filter the infrared radiation to a wavelength range substantially corresponding to the limited spectral bandwidth of the QWIPs before the infrared radiation is received by the focal plane array.
대표청구항▼
1. A device comprising: a focal plane array comprising a plurality of infrared photo detectors, wherein each infrared photo detector comprises:a plurality of quantum well layers configured to generate a desired photocurrent in response to infrared radiation; anda plurality of barrier layers alternat
1. A device comprising: a focal plane array comprising a plurality of infrared photo detectors, wherein each infrared photo detector comprises:a plurality of quantum well layers configured to generate a desired photocurrent in response to infrared radiation; anda plurality of barrier layers alternating with the quantum well layers,wherein an amount of doping of the quantum well layers, a spacing of quantum wells in the quantum well layers, and thicknesses of the quantum well layers and the barrier layers are selected to tune the focal plane array to have a limited spectral bandwidth with a peak response within a wavelength range of 10.3 μm to 10.8 μm and a full width half maximum spectral bandwidth of less than 0.7 μm in response to the infrared radiation, andwherein the less than 0.7 μm spectral bandwidth of the focal plane array is selected to reduce signal noise substantially outside the wavelength range of 10.3 μm to 10.8 μm associated with operation of the focal plane array and/or an optical band pass filter. 2. The device of claim 1, further comprising the optical band pass filter. 3. The device of claim 2, wherein the optical band pass filter is positioned substantially between a survey scene emitting the infrared radiation and the focal plane array and is adapted to filter the infrared radiation to a wavelength range substantially corresponding to the limited spectral bandwidth of the focal plane array before the infrared radiation is received by the focal plane array. 4. The device of claim 1, further comprising a lens positioned substantially between a survey scene emitting the infrared radiation and the focal plane array, wherein the lens is adapted to focus the infrared radiation at a focal plane substantially coincident with the focal plane array. 5. The device of claim 1, further comprising a processor coupled to the focal plane array, wherein: the focal plane array is adapted to provide a plurality of signals in response to the infrared radiation;the less than 0.7 μm spectral bandwidth of the focal plane array is selected to reduce dark current associated with the focal plane array and/or the optical band pass filter; andthe processor is adapted to receive the plurality of signals and render an image of a survey scene emitting the infrared radiation. 6. The device of claim 5, further comprising an output port coupled to the processor and adapted to pass the image to an external device. 7. The device of claim 5, further comprising a display coupled to the processor and adapted to display the image to a user. 8. The device of claim 5, wherein: the image comprises a rendering of one or more gasses in the survey scene having at least one absorption band within the limited spectral bandwidth of the focal plane array. 9. The device of claim 8, wherein the one or more gasses include a gas leak plume or a gas identified in TABLE 2. 10. A method of manufacturing a device, the method comprising: forming a focal plane array comprising a plurality of infrared photo detectors, wherein: the plurality of infrared photo detectors comprises a plurality of quantum well layers configured to generate a desired photocurrent in response to infrared radiation and a plurality of barrier layers alternating with the quantum well layers,an amount of doping of the quantum well layers, a spacing of quantum wells in the quantum well layers, and thicknesses of the quantum well layers and the barrier layers are selected to tune the focal plane array to have a limited spectral bandwidth with a peak response within a wavelength range of 10.3 μm to 10.8 μm and a full width half maximum spectral bandwidth of less than 0.7 μm in response to the infrared radiation, andthe less than 0.7 μm spectral bandwidth of the focal plane array is selected to reduce signal noise substantially outside the wavelength range of 10.3 μm to 10.8 μm associated with operation of the focal plane array and/or an optical band pass filter. 11. The method of claim 10, further comprising providing the optical band pass filter, wherein the optical band pass filter is positioned substantially between a survey scene emitting the infrared radiation and the focal plane array and is adapted to filter the infrared radiation to a wavelength range substantially corresponding to the limited spectral bandwidth of the focal plane array before the infrared radiation is received by the focal plane array. 12. The method of claim 11, wherein the optical band pass filter comprises a longwave band pass filter adapted to filter out infrared radiation outside of a longwave infrared spectrum. 13. The method of claim 10, further comprising providing a lens positioned substantially between a survey scene emitting the infrared radiation and the focal plane array, wherein the lens is adapted to focus the infrared radiation at a focal plane substantially coincident with the focal plane array. 14. The method of claim 10, further comprising providing a processor coupled to the focal plane array, wherein: the focal plane array is adapted to provide a plurality of signals in response to the infrared radiation;the less than 0.7 μm spectral bandwidth of the focal plane array is selected to reduce dark current associated with the focal plane array and/or the optical band pass filter; andthe processor is adapted to receive the plurality of signals and render an image of a survey scene emitting the infrared radiation. 15. The method of claim 14, further comprising providing an output port coupled to the processor and adapted to pass the image to an external device. 16. The method of claim 14, further comprising providing a display coupled to the processor and adapted to display the image to a user. 17. The method of claim 14, wherein: the image comprises a rendering of one or more gasses in the survey scene having at least one absorption band within the limited spectral bandwidth of the focal plane array. 18. The method of claim 17, wherein the one or more gasses include a gas leak plume or a gas identified in TABLE 2. 19. A method of providing an image of a survey scene, the method comprising: receiving infrared radiation from the survey scene at a focal plane array comprising a plurality of infrared photo detectors adapted to receive the infrared radiation, wherein: the plurality of infrared photo detectors comprises a plurality of quantum well layers configured to generate a desired photocurrent in response to the infrared radiation and a plurality of barrier layers alternating with the quantum well layers,an amount of doping of the quantum well layers, a spacing of quantum wells in the quantum well layers, and thicknesses of the quantum well layers and the barrier layers are selected to tune the focal plane array to have a limited spectral bandwidth with a peak response within a wavelength range of 10.3 μm to 10.8 μm and a full width half maximum spectral bandwidth of less than 0.7 μm in response to the infrared radiation, andthe less than 0.7 μm spectral bandwidth of the focal plane array is selected to reduce signal noise substantially outside the wavelength range of 10.3 μm to 10.8 μm associated with operation of the focal plane array and/or an optical band pass filter; andproviding a plurality of signals from the focal plane array corresponding to an image of the survey scene. 20. The method of claim 19, further comprising filtering the infrared radiation to a filtered wavelength range substantially corresponding to the limited spectral bandwidth of the focal plane array, by the optical band pass filter, before the infrared radiation is received by the focal plane array.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (55)
Hornfeld Willi (Wildeshausen DEX) Grobecker Helmut (Stuhr DEX) Meyer Dietmar (Bremen DEX), Apparatus for detecting leakages in structural members.
Moore Gerald (Boggs Township ; Armstrong County PA) Hawley James G. (San Jose CA) Bradley William C. (Gastonia NC) Harper Brian M. (Wildmoor GB2), Apparatus for imaging gas.
Kulp,Thomas Jan; Kliner,Dahv A. V.; Sommers,Ricky; Goers,Uta Barbara; Armstrong,Karla M., Backscatter absorption gas imaging systems and light sources therefore.
Broicher Heribert (Goslar DEX) Kirsch Erich (Goslar DEX) Knolle Friedhart (Goslar DEX) Winnacker Helmut (Ehlershausen DEX) Zydek Arthur (Wolfenbttel DEX), Device for the detection of fluorescent substances on the surface of the earth.
Sato Tominori (Osaka JPX) Kanagawa Toshihide (Osaka JPX) Sumida Koichi (Osaka JPX) Nishio Takeshi (Osaka JPX), Gas visualizing apparatus and method for detecting gas leakage from tanks or piping.
Clarke Richard H. (Scituate MA) Hopkins T. Eric (Wellesley MA) Chung Wai (Watertown MA) DeJesus Stephen (Newton MA) Harrison Harvey (Needham MA), Hydrocarbon leak sensor.
Piety Kenneth R. (Knoxville TN) Heise Brian D. (Knoxville TN) Battenberg Rexford A. (Knoxville TN) King Willie T. (Powell TN), Infrared thermography system including mobile unit.
Bethea Clyde G. (Plainfield NJ) Choi Kwong-Kit (North Plainfield NJ) Levine Barry F. (Livingston NJ) Malik Roger J. (Summit NJ) Walker John F. (Westfield NJ), Infrared-radiation detector device.
Griggs Michael (San Diego CA) Acton Laurence L. (La Jolla CA) Hall Gordon D. (San Diego CA), Method and apparatus for accurate remote monitoring of gases.
Kilian,Ralf; Rolff,Randolf; K체ster,Gerhard; Hirche,Ralf, Method for detecting a gas using an infrared gas analyser and gas analyser suitable for carrying out said method.
McRae Thomas G. (2751 Ryan Blvd. Punta Gorda FL 33950) Dewey Alan H. (5943 SW. County Rd. ; 761 Arcadia FL 33821), Photo-acoustic leak detection system and method.
Bethea Clyde G. (943 Hillside Ave. Plainfield NJ 07062) Hasnain Ghulam (14 Daphne Ct. Edison NJ 08820) Levine Barry F. (22 Bear Brook La. Livingston NJ 07039) Malik Roger J. (23 Ridgedale Ave. Summit, Quantum-well radiation-interactive device, and methods of radiation detection and modulation.
Kalayeh, Hooshmand M.; Paz-Pujalt, Gustavo R.; Spoonhower, John P., System and method for remote quantitative detection of fluid leaks from a natural gas or oil pipeline.
Kalayeh,Hooshmand M.; Paz Pujalt,Gustavo R.; Spoonhower,John P., System and method for remote quantitative detection of fluid leaks from a natural gas or oil pipeline.
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.