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Frontiers of Information Technology & Electronic Engineering >> 2020, Volume 21, Issue 6 doi: 10.1631/FITEE.1900529

Development of space-based diffractive telescopes

Affiliation(s): School of Science, Changchun University of Science and Technology, Changchun 130022, China; School of Physics, Northeast Normal University, Changchun 130024, China; Jilin Police College, Changchun 130117, China; Key Laboratory of Spectral Imaging Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China; Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130024, China; less

Received: 2019-09-28 Accepted: 2020-06-12 Available online: 2020-06-12

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Abstract

formed by fabricating microstructures on the substrates have two important characteristics, ultra-light mass (surface mass density < 0.1 kg/m2) and loose surface shape tolerances (surface accuracy requirements are on the order of magnitude of centimeter). Large-aperture telescopes using a membrane diffractive optical element as the primary lens have , light weight, and low cost at launch. In this paper, the research and development on space-based s are classified and summarized. First, the imaging theory and the configuration of diffractive-optics telescopes are discussed. Then, the developments in s are introduced. Finally, the development prospects for this technology used as a high-resolution space reconnaissance system in the future are summarized, and the critical and relevant work that China should carry out is put forward.

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