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14 July 1988 Development Of An Extended Blackbody Source For The Calibration Of Infrared Systems (I)
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Abstract
A multiple-celled extended blackbody source with two temperatures which has an operating temperature range of 40°C to 150°C, utilizing water/copper gravity heat pipe for uniform and stable temperature control, is reported in this paper. And its effective working area is 420x234 mr11. AGA-780 thermovision and THERMO TRACER 6T61 are used to measure the temperature distribution over the working area of the extended source and the results indicate that the maximum value of the temperature difference within ninety eight percent of the working area is less than 1.5°C. A method of calculating the integrated emissivity of a multiple-celled extended source defined by us has been used to compute the integrated emissivity of the extended source: The results show that the integrated emissivity of the extended source to a concentric detector is 0.993 when the apparent emissivity of the black paint is 0.98.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhang Wei, Gao Kuiming, and Xie Zhi "Development Of An Extended Blackbody Source For The Calibration Of Infrared Systems (I)", Proc. SPIE 0940, Infrared Scene Simulation: Systems, Requirements, Calibration, Devices, and Modeling, (14 July 1988); https://doi.org/10.1117/12.947146
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