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Opt."],"published-print":{"date-parts":[[2023,3,1]]},"abstract":"<jats:p>For the correction of defocus and astigmatism, mechanical approaches\n\t\t\t\t\tare well known, but there is a need for a non-mechanical, electrically\n\t\t\t\t\ttunable optical system that could provide both focus and astigmatism\n\t\t\t\t\tpower correction with an adjustable axis. The optical system presented\n\t\t\t\t\there is composed of three liquid-crystal-based tunable cylindrical\n\t\t\t\t\tlenses that are simple, low cost, and having a compact structure.\n\t\t\t\t\tPotential applications of the concept device include smart eyeglasses,\n\t\t\t\t\tvirtual reality (VR)\/ augmented reality (AR)\u00a0head-mounted\n\t\t\t\t\tdisplays (HMDs), and optical systems subject to thermal or mechanical\n\t\t\t\t\tdistortion. 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