| A novel radiant source for infrared calibration by using a grooved surface |
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| 作者姓名： | 张宏 戴景民 |
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| 作者单位： | School of Electrical Engineering & Automation Harbin Institute of Technology，Harbin 150001 School of Computer Science and Technology，Harbin University of Science & Technology，Harbin 150080，School of Electrical Engineering & Automation，Harbin Institute of Technology，Harbin 150001 |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China under Grant No. 50336010. |
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| 摘 要： | A radiant source with a large aperture at 5-95℃ in the wavelength bands of 8-12 μm for calibrating infrared imaging systems has been designed. The effective emissivity of its flat bottom with concentric V-grooves was evaluated by the Monte-Carlo method whose correctness was tested and accuracy was discussed. The structure of the source was completed by incorporating the simulation results with the blackbody cavity effect. The source was certificated via an optical measurement system. The source can provide a consistent radiant flux with temperature uniformity of ±0.1 ℃ over an area of diameter of φ80 mm.
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