Li Chenhui, Jiang Hongrui
Appl Phys Lett. 2012 Jun 4;100(23):231105-2311054. doi: 10.1063/1.4726038. Epub 2012 Jun 5.
We demonstrate a flexible, electrowetting-driven, variable-focus liquid microlens. The microlens is fabricated using a soft polymer polydimethylsiloxane. The lens can be smoothly wrapped onto a curved surface. A low-temperature fabrication process was developed to reduce the stress on and to avoid any damage to the polymer. The focal length of the microlens varies between -15.0 mm to +28.0 mm, depending on the applied voltage. The resolving power of the microlens is 25.39 line pairs per mm using a 1951 United States Air Force resolution chart. The typical response time of the lens is around 50 ms.
我们展示了一种灵活的、电润湿驱动的可变焦距液体微透镜。该微透镜采用软聚合物聚二甲基硅氧烷制造。该透镜可以平滑地包裹在曲面上。开发了一种低温制造工艺，以减少聚合物上的应力并避免对其造成任何损坏。微透镜的焦距根据施加的电压在-15.0毫米至+28.0毫米之间变化。使用1951年美国空军分辨率测试图时，微透镜的分辨能力为每毫米25.39线对。该透镜的典型响应时间约为50毫秒。
