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Tunable Soft Lens of Large Focal Length Change
Soft Robotics ( IF 7.9 ) Pub Date : 2022-08-08 , DOI: 10.1089/soro.2021.0036
Yuzhe Wang 1 , Pengcheng Li 2, 3 , Ujjaval Gupta 1, 4 , Jianyong Ouyang 2 , Jian Zhu 5, 6
Affiliation  

Tunable lens technology inspired by the human eye has opened a new paradigm of smart optical devices for a variety of applications due to unique characteristics such as lightweight, low cost, and facile fabrication over conventional lens assemblies. The fast-growing demands for tunable optical lenses in consumer electronics, medical diagnostics, and optical communications require the lens to have a large focal length modulation range and high compactness. Herein, for the first time, an all-solid tunable soft lens driven by highly transparent dielectric elastomer actuators (DEAs) based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) and waterborne polyurethane (PEDOT:PSS/WPU) transparent electrodes is developed. The deformation of the tunable soft lens is achieved by the actuation of DEAs, mimicking the change of the surface profile of the human eye to achieve remarkable focal length variations. Upon electrical activation, this tunable soft lens can vary its original focal length by 209%, which is one of the highest among current tunable soft lenses and far beyond that of the human eye. This study demonstrates that transparent DEAs are capable of achieving focus-variation functions, and potentially useful in artificial robotic vision, visual prostheses, and adjustable glasses, which will induce significant effects on the future development of tunable optics.

中文翻译:

大焦距变化可调软镜头

受人眼启发的可调谐透镜技术为各种应用开辟了智能光学设备的新范式,因为其独特的特性例如重量轻、成本低以及与传统透镜组件相比易于制造。消费电子、医疗诊断和光通信领域对可调谐光学镜头的需求快速增长,要求镜头具有大焦距调制范围和高度紧凑性。在此,首次基于聚(3,4-乙烯二氧噻吩):聚(苯乙烯磺酸盐)和水性聚氨酯(PEDOT:PSS/WPU)透明的高透明介电弹性体致动器(DEA)驱动全固态可调软透镜开发电极。可调软透镜的变形是通过 DEA 的驱动来实现的,模仿人眼表面轮廓的变化,以实现显着的焦距变化。在电激活后,这种可调软透镜可以将其原始焦距改变 209%,这是当前可调软透镜中最高的焦距之一,远远超过人眼的焦距。这项研究表明,透明 DEA 能够实现焦点变化功能,并可能在人工机器人视觉、视觉假体和可调节眼镜中发挥作用,这将对可调谐光学器件的未来发展产生重大影响。
更新日期:2022-08-11
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