Research on technology of large-diameter high-precision fixed-point infrared radiation source under wide temperature

Yuguo Zhang; Hongsheng Sun; Jiapeng Wang; Zhang Xu; Jidong Du; Zhang Xin

doi:10.1117/12.2646941

20 January 2023 Research on technology of large-diameter high-precision fixed-point infrared radiation source under wide temperature

Yuguo Zhang, Hongsheng Sun, Jiapeng Wang, Zhang Xu, Jidong Du, Zhang Xin

Author Affiliations +

Proceedings Volume 12555, AOPC 2022: Infrared Devices and Infrared Technology; and Terahertz Technology and Applications; 1255506 (2023) https://doi.org/10.1117/12.2646941
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

With the further development of the technology, the application of infrared imaging detection system environment gradually extended to the external field, high altitude, near space and outer space, etc. Its working temperature range is getting wider and wider, low temperature can reach -50°C below, high temperature can reach 70°C above. Infrared imaging detection system needs to meet the requirements of quantitative detection technology in a wide temperature range to ensure the completion of corresponding functions. In order to ensure that the infrared detection system can perform performance testing, radiometric calibration and quantitative traceability in the whole temperature range, this paper developed a large-aperture high-precision fixed-point infrared radiation source with a wide temperature range, and its phase change medium is water. It mainly includes diaphragm assembly, radiation cavity, inner wall coating of radiation cavity, heating assembly, temperature control assembly, etc. After development, verification tests were carried out in high and low temperature environment, and the following indexes were achieved: effective emissivity ≥0.999, cavity opening diameter ≥60mm, and temperature measurement uncertainty: 5mK (k=2). It has been proved that it can meet the measurement and testing requirements of infrared detection system under wide temperature range.

Citation Download Citation

Yuguo Zhang, Hongsheng Sun, Jiapeng Wang, Zhang Xu, Jidong Du, and Zhang Xin "Research on technology of large-diameter high-precision fixed-point infrared radiation source under wide temperature", Proc. SPIE 12555, AOPC 2022: Infrared Devices and Infrared Technology; and Terahertz Technology and Applications, 1255506 (20 January 2023); https://doi.org/10.1117/12.2646941

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KEYWORDS

Black bodies

Temperature metrology

Infrared radiation

Control systems

Temperature sensors

Imaging systems

Infrared imaging

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