2 January 2018 Opto-mechanical design and development of a 460mm diffractive transmissive telescope
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Abstract
Using lightweight, replicated diffractive optics, we can construct extremely large aperture telescopes in space.The transmissive primary significantly reduces the sensitivities to out of plane motion as compared to reflective systems while reducing the manufacturing time and costs. This paper focuses on the design, fabrication and ground demonstration of a 460mm diffractive transmissive telescope,the primary F/# is 6, optical field of view is 0.2° imagine bandwidth is 486nm~656nm.The design method of diffractive optical system was verified, the ability to capture a high-quality image using diffractive telescope collection optics was tested.The results show that the limit resolution is 94lp/mm, the diffractive system has a good imagine performance with broad bandwidths. This technology is particularly promising as a means to achieve extremely large optical primaries from compact, lightweight packages.
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Bo Qi, Lihua Wang, Zhangang Cui, Jiang Bian, Sihua Xiang, Haotong Ma, Bin Fan, "Opto-mechanical design and development of a 460mm diffractive transmissive telescope", Proc. SPIE 10456, Nanophotonics Australasia 2017, 104565I (2 January 2018); doi: 10.1117/12.2282748; https://doi.org/10.1117/12.2282748
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