为提高传统模式电极液晶透镜的响应速度, 本文设计了模式电极pi-cell液晶透镜。结合液晶连续体理论和模式电极液晶透镜电阻-电容等效电路, 提出一种快速的计算方法对液晶透镜进行模拟仿真, 仿真结果与实际器件的测试参数具有良好的一致性, 显示了此仿真方法具有较高的精度, 并依据仿真结果设计了模式电极pi-cell液晶透镜的驱动条件。实验制备了模式电极pi-cell液晶透镜并研究了其光学特性, 结果显示此液晶透镜具有较大的焦距调节范围和良好的成像效果, 对比于参数相近的模式电极平行排列液晶透镜, 模式电极pi-cell液晶透镜的响应时间为136 ms, 比平行排列液晶透镜减少368 ms, 响应速度显著提高。

In order to improve the response speed of the traditional modal electrode liquid crystal lens, a modal electrode pi-cell liquid crystal lens is designed. Combining the theory of liquid crystal continuum and the model of resistance-capacitance equivalent circuit of modal electrode liquid crystal lens, a fast calculation method is proposed to simulate the liquid crystal lens. The simulation results are in good agreement with the test parameters of actual device. It shows that the simulation method has high precision. The driving conditions of the modal electrode pi-cell liquid crystal lens is designed according to the simulation results. The modal electrode pi-cell liquid crystal lens is fabricated and its optical properties are studied. The results show that the liquid crystal lens has a large focal length adjustment range and good imaging effect. The response time of modal electrode pi-cell liquid crystal lens is 136 ms, which is 368 ms shorter than the parallel oriented liquid crystal lens with similar parameters. The response speed of modal electrode pi-cell liquid crystal lens is significantly improved.