Design of a radiometric calibration light source based on a freeform reflector

doi:10.37188/CO.2022-0021

CIOMP OpenIR

	Design of a radiometric calibration light source based on a freeform reflector
	J.-W. Tian, X. Ye and W. Fang
	2023
发表期刊	Chinese Optics
ISSN	20971842
卷号	16 期号:1 页码:127-135
摘要	We propose a design method of a free-form reflector for collimating illumination of integrating spherical light sources to reduce the space occupation on a satellite. By using this method, a square irradiance distribution with large area can be achieved through a integrating sphere with small diameter. Firstly, the mathematical model of off-axis reflection lighting of free-form surface is established through the point light source model, then the free-form surface is discretized by Chebyshev points, and the free-form surface model that satisfies the point light source illumination is solved. Finally, the light source characteristics of the integrating sphere are analyzed. The transformation from the point light source illumination model to the integrating sphere illumination model is achieved by the optimization of the free-form surface energy distribution. The analysis results show that when the illumination area is set as 140 mm×140 mm, the irradiance non-uniformity of the target surface is less than 0.02. This method can meet the requirements of spaceborne calibration for light weight, short light path and simple structure. © 2023 Editorial Office of Chinese Optics. All rights reserved.
DOI	10.37188/CO.2022-0021
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收录类别	ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67893
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	J.-W. Tian, X. Ye and W. Fang. Design of a radiometric calibration light source based on a freeform reflector[J]. Chinese Optics,2023,16(1):127-135.
APA	J.-W. Tian, X. Ye and W. Fang.(2023).Design of a radiometric calibration light source based on a freeform reflector.Chinese Optics,16(1),127-135.
MLA	J.-W. Tian, X. Ye and W. Fang."Design of a radiometric calibration light source based on a freeform reflector".Chinese Optics 16.1(2023):127-135.

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