【摘 要】
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Membrane diffractive optical elements formed by fabricating microstructures on the substrates have two important characteristics,ultra-light mass (surface mass
【机 构】
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School of Science,Changchun University of Science and Technology,Changchun 130022,China“,”Jilin Poli
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Membrane diffractive optical elements 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 super large aperture,light weight,and low cost at launch.In this paper,the research and development on space-based diffractive telescopes are classified and summarized.First,the imaging theory and the configuration of diffractive-optics telescopes are discussed.Then,the developments in diffractive telescopes 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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