Chen Tao, Shang Xiuting, Sun Jingyi, Zheng Peitao, Xu Rongqing
Opt Lett. 2023 Aug 15;48(16):4193-4196. doi: 10.1364/OL.496395.
This paper proposes a dielectrophoretic (DEP) liquid lens that is driven by interdigitated electrodes distributed on the sidewalls and has a structure similar to that of the electrowetting one produced by the company Corning. The interdigital electrodes are formed by winding double flexible wire electrodes wrapped in dielectric layers on the sidewall. Compared with the traditional planar electrode DEP lens, the proposed model ensures the stability of the optical axis of the liquid lens, simplifies the construction process of the interdigital electrode, realizes a continuous change in the focus from negative to positive, and reduces the response time. A truncated conical cavity dielectrophoretic liquid lens with an aperture of 5 mm is fabricated. When the voltage is 0-260 V, it can reach shortest negative and positive focal lengths of -100 mm and 100 mm with a driving time of 190 ms and a relaxation time of 133 ms.
本文提出了一种介电泳（DEP）液体透镜，该透镜由分布在侧壁上的叉指电极驱动，其结构与康宁公司生产的电润湿液体透镜类似。叉指电极是通过在侧壁上缠绕包裹在介电层中的双柔性线电极形成的。与传统的平面电极DEP透镜相比，所提出的模型确保了液体透镜光轴的稳定性，简化了叉指电极的制作过程，实现了焦点从负到正的连续变化，并缩短了响应时间。制作了一个孔径为5 mm的截头圆锥腔介电泳液体透镜。当电压为0 - 260 V时，其最短负焦距和正焦距可分别达到 - 100 mm和100 mm，驱动时间为190 ms，弛豫时间为133 ms。
