Wang Danyang, Hu Degang, Zhou Yanwu, Sun Licun
Opt Express. 2022 Dec 19;30(26):47430-47439. doi: 10.1364/OE.478130.
In this study, a focus-tunable liquid cylindrical lens based on electrowetting was designed and fabricated. The cylindrical cavity usually used in common electrowetting zoom spherical lenses was replaced by a 20 mm × 10 mm × 8 mm cuboid cavity, in which the interface of two liquids formed a toroid owing to the electrowetting effect. The proposed liquid cylindrical lens can serve as either a converging or diverging lens with the response time under 110 ms by changing the supplied voltage. The zoom lens we fabricated worked stably under 0-110 V voltage for a long time, guaranteeing that the focal length of the liquid cylindrical lens can range within (-∞, -148.36 mm) ∪ (697.21 mm, +∞). By combining the liquid lens that we designed with a simple fixed cylindrical lens, a cylindrical lens system with an arbitrary focal length suitable for various tasks in beam manipulation can be realized.
在本研究中，设计并制作了一种基于电润湿的焦距可调液体圆柱透镜。普通电润湿变焦球面透镜中常用的圆柱形腔被一个20 mm×10 mm×8 mm的长方体腔所取代，在该腔中，两种液体的界面由于电润湿效应形成一个环面。所提出的液体圆柱透镜可通过改变所施加的电压，作为会聚透镜或发散透镜，响应时间在110 ms以下。我们制作的变焦透镜在0至110 V电压下能长时间稳定工作，确保液体圆柱透镜的焦距范围在(-∞, -148.36 mm) ∪ (697.21 mm, +∞)内。通过将我们设计的液体透镜与一个简单的固定圆柱透镜相结合，可实现适用于光束操控中各种任务的具有任意焦距的圆柱透镜系统。
