External field calibration method for low-temperature section of infrared radiation measuring equipment

Xiaofei Lu; Li Zhang; Yi Li; Hui Zhao

doi:10.1117/12.2572860

10 October 2020 External field calibration method for low-temperature section of infrared radiation measuring equipment

Xiaofei Lu, Li Zhang, Yi Li, Hui Zhao

Proceedings Volume 11559, Infrared, Millimeter-Wave, and Terahertz Technologies VII; 115590M (2020) https://doi.org/10.1117/12.2572860
Event: SPIE/COS Photonics Asia, 2020, Online Only

Abstract

In the process of using infrared radiation measuring equipment, it is generally required to calibrate the linear response of the linear response range of the infrared focal plane detector. The calibration process generally calculates the grayscale output value of the device by measuring the standard blackbody radiation source with different known temperatures, and calculates the linear response of the device by the fitting method. In the actual calibration process of the external field, since the calibration temperature of the blackbody radiation source cannot be set lower than the ambient temperature, the equipment cannot perform measurement calibration on the black body below the ambient temperature, resulting in the lower limit of the linear response interval of the device cannot be confirmed, lower than the environment. The extrapolation calibration of the temperature may have a large error and the error cannot be evaluated. In this paper, a calibration method for low temperature section of external field equipment is proposed. The experiment proves that the method has high calibration accuracy.

Citation Download Citation

Xiaofei Lu, Li Zhang, Yi Li, and Hui Zhao "External field calibration method for low-temperature section of infrared radiation measuring equipment", Proc. SPIE 11559, Infrared, Millimeter-Wave, and Terahertz Technologies VII, 115590M (10 October 2020); https://doi.org/10.1117/12.2572860

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KEYWORDS

Calibration

Infrared radiation

Black bodies

Temperature metrology

Environmental sensing

Infrared detectors

Infrared sensors

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