Athermalization design of collimating lens system for space solar telescope

Shuaiyang Tao; Jianfeng Yang; Xiaolong Ma

doi:10.1117/12.2207993

5 November 2015 Athermalization design of collimating lens system for space solar telescope

Shuaiyang Tao, Jianfeng Yang, Xiaolong Ma

Proceedings Volume 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015; 979504 (2015) https://doi.org/10.1117/12.2207993
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held June-July 2015, 2015, Hefei, Suzhou, and Harbin, China

Abstract

The Solar Magnetic Field Telescope (MFT) , which imaged directly towards the sun , received about 1000W heat load irradiating into the telescope system, resulting in changes of ambient temperature. According to the principles of athermal design, a collimating lens system was designed, allowing MFT to work properly between a wider temperature range . The collimating lens system with F number of 3.55, worked in the visible spectrum, had the effective focal length of 156.4mm and the full field of view of 2.8 arc min ×2.8 arc min. Through the passive optical athermal method , the optimized lens works at ambient temperature ranging from -40℃ to 60℃.The radii of RMS are all smaller than the pixel pitch. The image quality approaches to diffraction limit and the MTF value is over 0.75, which satisfies the system specifications.

Citation Download Citation

Shuaiyang Tao, Jianfeng Yang, and Xiaolong Ma "Athermalization design of collimating lens system for space solar telescope", Proc. SPIE 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015, 979504 (5 November 2015); https://doi.org/10.1117/12.2207993

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