Abstract The absolute measurement of blackbody spectral emissivity is a challenging metrology problem.In order to realize the accurate measurement of blackbody spectral emissivity at room temperature, a set of mid-infrared blackbody spectral emissivity measurement device is built based on continuous tunable laser.The MCT detector is driven by a self-designed 10mA constant current source, and the dynamic range of the measurement results ranges from 7.29×104 to 4.32×105, effectively improving the dynamic range of the detection system. The device achieves the high-precision measurement of emissivity, the spectral range covers 7.5~10.6μm, the emissivity measurement value ranging from 0.01 to 0.9999, the optimal uncertainty is 4.0×10-5(k=2).
MA Yu-xuan,FENG Guo-jin. Research on Calibration Technology of Spectral Emissivity of Blackbody at Normal Temperature[J]. Acta Metrologica Sinica, 2022, 43(9): 1161-1165.
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2022, Vol. 43 
