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Optical Engineering

New shape of blackbody cavity: conical generatrix with an inclined bottom
Author(s): Qianqian Fang; Wei Fang; Yupeng Wang; Xin Ye; BingXi Yu
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Paper Abstract

A new shape of blackbody cavity composed of a conical generatrix and a flat inclined bottom is developed for absolute optical radiation measurement in space. For the new-shape cavity with specular isothermal cavity walls, the Monte Carlo method was used to obtain the optimal cavity geometrical parameters, such as the conical angle and inclination angle of the bottom. Distribution maps of the number of reflections over the aperture for traced rays were depicted for demonstrating the performance of the new cavity. Finally, the new-shape cavity was simulated as a blackbody absorber in cryogenic solar absolute radiometer (CSAR). Calculation results reflect that the new-shape cavity can get high absorptivity and achieve high accuracy measurements in CSAR from space.

Paper Details

Date Published: 7 August 2012
PDF: 6 pages
Opt. Eng. 51(8) 086401 doi: 10.1117/1.OE.51.8.086401
Published in: Optical Engineering Volume 51, Issue 8
Show Author Affiliations
Qianqian Fang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Wei Fang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Yupeng Wang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Xin Ye, Changchun Institute of Optics, Fine Mechanics and Physics (China)
BingXi Yu, Changchun Institute of Optics, Fine Mechanics and Physics (China)


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