电润湿双液体透镜的界面面型分析

Analysis on the Interface Shape of Double Liquid Lens Based on Electro-wetting Technology

运用拉普拉斯方程,分析了液体界面面型与密度差以及界面张力之间的关系。采用新兴的离子液体作为导电液体,选取常见的四种绝缘液体,得到了存在密度差的导电液体和绝缘液体的四种组合形式。基于这四种组合形式的双液体透镜系统模型,分别仿真计算了相应的非球面界面面型方程,并对含有非球面界面的液体透镜进行了成像分析。得出结论,相比于界面为球面的液体透镜,使用非球面界面的液体透镜时,成像质量得到很好的改善,但其非球面度和成像质量没有正相关性。

Firstly, the relationship among the interface, the density difference and the interfacial tension is analysed with the Laplace equation. Then, as for the combination and selection of materials, we use a new ionic conductive liquid and four kinds of common insulating liquid so as to obtain four combinations of the conductive liquid and the insulating liquids according to density difference. Finally, by simulation, we calculate the corresponding equations and analyse the imaging quality of the liquid lens with aspheric interface. It is concluded that the imaging quality is improved when the liquid lens with aspheric interface is compared to a liquid lens with spherical interface, but it has no positive correlation with the degree of the asphericity and the imaging quality.