Optimal design of an earth observation optical system with dual spectral and high resolution

Pei-pei Yan; Kai Jiang; Kai Liu; Jing Duan; Qiusha Shan

doi:10.1117/12.2257219

28 February 2017 Optimal design of an earth observation optical system with dual spectral and high resolution

Pei-pei Yan, Kai Jiang, Kai Liu, Jing Duan, Qiusha Shan

Proceedings Volume 10256, Second International Conference on Photonics and Optical Engineering; 102561X (2017) https://doi.org/10.1117/12.2257219
Event: Second International Conference on Photonics and Optical Engineering, 2016, Xi'an, China

Abstract

With the increasing demand of the high-resolution remote sensing images by military and civilians, Countries around the world are optimistic about the prospect of higher resolution remote sensing images. Moreover, design a visible/infrared integrative optic system has important value in earth observation. Because visible system can’t identify camouflage and recon at night, so we should associate visible camera with infrared camera. An earth observation optical system with dual spectral and high resolution is designed. The paper mainly researches on the integrative design of visible and infrared optic system, which makes the system lighter and smaller, and achieves one satellite with two uses. The working waveband of the system covers visible, middle infrared (3-5um). Dual waveband clear imaging is achieved with dispersive RC system. The focal length of visible system is 3056mm, F/# is 10.91. And the focal length of middle infrared system is 1120mm, F/# is 4. In order to suppress the middle infrared thermal radiation and stray light, the second imaging system is achieved and the narcissus phenomenon is analyzed. The system characteristic is that the structure is simple. And the especial requirements of the Modulation Transfer Function (MTF), spot, energy concentration, and distortion etc. are all satisfied.

Citation Download Citation

Pei-pei Yan, Kai Jiang, Kai Liu, Jing Duan, and Qiusha Shan "Optimal design of an earth observation optical system with dual spectral and high resolution", Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102561X (28 February 2017); https://doi.org/10.1117/12.2257219

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