光学精密工程2009，Vol.17Issue(6)：1397-1402,6.
带有悬浮锥形圆环的液体变焦透镜
Variable-focus liquid lens with suspended conical ring
摘要
Abstract
A novel configuration of variable-focus liquid lens based on an electrowetting-on-dielectric technique is presented, which consists of a glass slide coated with a conductive Indium Tin Oxide (ITO) film, a hydrophobic dielectric film, a hollow conical metal ring suspended right above a gap between the slide and the ring, and the lens liquid (water). By changing the voltage applied to a grounded metal ring and a ITO control electrode, both the position and curvature of the liquid meniscus can be reversibly adjusted, and the focal length of the lens can be tuned. The shapes of the suspended ring in the present work are also designed to self-center the lens liquid, then in fluences of different shapes of the suspended rings on the variation of optical power of the meniscus are discussed. Experimental results show that the liquid lens at a good imaging quality is able to focus on objects away from 2.5 cm up to infinity at a 40 V power supply and also able to offer the variation range of the optical power up to 40 m-1. Because of the properties such as low consumption, small sizes and high reversibility and so on, the demonstrated configuration provides great advantages in the field of microlens.关键词
介质上电润湿/变焦透镜/液体透镜/表面张力Key words
electrowetting on dielectric/variable-focus lens/liquid lens/surface tension分类
机械制造引用本文复制引用
孙凯歌,康明,欧阳帆,岳瑞峰..带有悬浮锥形圆环的液体变焦透镜[J].光学精密工程,2009,17(6):1397-1402,6.基金项目
Supported by the NationalNatural Science Foundation of China (Grant No.10472055) （Grant No.10472055）
