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Understanding wide field-of-view flat lenses:an analytical solution[Invited]
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作者 杨帆 安森松 +3 位作者 mikhail y.shalaginov 张华亮 胡崛隽 古田 《Chinese Optics Letters》 SCIE EI CAS CSCD 2023年第2期111-118,共8页
Wide field-of-view(FOV)optics are widely used in various imaging,display,and sensing applications.Conventional wide FOV optics rely on complicated lens assembly comprising multiple elements to suppress coma and other ... Wide field-of-view(FOV)optics are widely used in various imaging,display,and sensing applications.Conventional wide FOV optics rely on complicated lens assembly comprising multiple elements to suppress coma and other Seidel aberrations.The emergence of flat optics exemplified by metasurfaces and diffractive optical elements(DOEs)offers a promising route to expand the FOV without escalating complexity of optical systems.To date,design of large FOV flat lenses has been relying upon iterative numerical optimization.Here,we derive,for the first time,to the best of our knowledge,an analytical solution to enable computationally efficient design of flat lenses with an ultra-wide FOV approaching 180°.This analytical theory further provides critical insights into working principles and otherwise non-intuitive design trade-offs of wide FOV optics. 展开更多
关键词 metasurface metalens FIELD-OF-VIEW
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