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Gradient-emissivity thermal emitter for IR camera testing and calibration
Proceedings of the 2012 International Conference on Quantitative InfraRed Thermography
This paper presents design and testing a reference grey body fabricated using different-depth microcavities. The apparent emissivity is achieved by varying the shape coefficient K defined as depth/width ratio. Three different values of shape factor were used in the measurements, K=1.6, 4, 9. There are 2 versions of the emitter made of aluminium and copper, with different coatings made of titanium and nickel. Beneath the emissive surface, a Peltier cooler/heater is located with a closed loopdoi:10.21611/qirt.2012.311 fatcat:wtykiv36nbbubno77ztfo3km6i