Hyperspectral LWIR measurements with imaging diffraction grating spectrometer and uncooled thermal camera

• Autorzy: Olbrycht R. , Rzeszotarski D.
• Języki publikacji: EN

Abstrakty

EN

This paper demonstrates how to perform hyperspectral infrared measurements with uncooled thermal camera and imaging spectrometer. Such thermal cameras are sensitive to wavelengths in the range of 7 – 14 µm (LWIR). There is a description of a diffraction grating based spectrometer with Czerny-Turner optical configuration. To perform hyperspectral acquisition of thermograms it is required to have the camera synchronized with spectrometer, so that recorded frames correspond to known wavelengths. For this purpose the dedicated software was developed and it is also described in this paper, with its operation algorithm. There is a problem of thermal camera drift, and this paper proposes the solution to deal with it. Moreover a description how to obtain transmission plot and exemplary results is presented with the description of measurement rig. In addition, noise related issues are covered and discussed.

Słowa kluczowe

EN

hyperspectral; spectrometer; diffraction grating; thermal camera

• Wydawca: Wydawnictwo PAK
• Czasopismo: Measurement Automation Monitoring
• Rocznik: 2015
• Tom: Vol. 61, No. 6
• Strony: 169--172
• Opis fizyczny: Bibliogr. 5 poz., rys., schem., wykr., wzory

Twórcy

autor

Olbrycht R.

• Lodz University of Technology, Inst. of Electronics, 90-924 Łódź, Wólczańska 211/215 St.

autor

Rzeszotarski D.

• Lodz University of Technology, Inst. of Electronics, 90-924 Łódź, Wólczańska 211/215 St.

Bibliografia

• [1] Kastek M., Piątkowski T., Życzkowski M., Chamberland M., Lagueux P., Farley V.: Hyperspectral imaging infrared sensor used for enviromental monitoring. Acta Phys. Pol. A 2013, 124(3), 463-467.
• [2] Oriel Instruments: Cornerstone™ 260 1/4m Monochromator Family User Manual. Newport Corporation, Irvine, 2015. Available online: http://assets.newport.com/webDocuments-EN/images/38502.pdf
• [3] Olbrycht R., Więcek B., Kałuża M.: Spectral infrared analysis in thermal cameras with diffraction gratings. 12th International Conference on Quantitative InfraRed Thermography, 7-11 July 2014, Bordeaux, France. Available from QIRT Open Archives: http://qirt.gel.ulaval.ca/archives/qirt2014/QIRT%202014%20Papers/QIRT-2014-060.pdf
• [4] Fluke Corporation: 4180, 4181 Precision Infrared Calibrator Technical Guide, 2013. Available online: http://us.flukecal.com/products/ temperature-calibration/industrial-calibrators/infrared-calibrators/418 04181-precision-infr?quicktabs_product_details=4#quicktabs_ product_ details
• [5] Więcek B., De Mey G.: Termowizja w podczerwieni. PAK, Warszawa, 2011.