利用向列相液晶材料的各向异性和双折射特点，采用紫外光刻和湿法刻蚀技术，设计并制作了透明的圆孔图案梯度折射率液晶微透镜阵列。搭建了光学测试系统，测试了该阵列的聚焦性能和焦距，并给出了焦距与加载电压之间的关系。将该阵列与主镜头和图像传感器进行耦合，构成一个双模成像相机原型，通过开启或关闭加载电压实现光场成像模式和普通成像模式的快速切换。在两种工作模式下对目标物采集双模原始图像，结果表明该相机既可在光场工作模式下采集三维光场图像，也可在普通工作模式下采集普通图像。

A transparent hole patterned liquid crystal microlens array is designed and fabricated via ultraviolet photolithography and wet etching based on nematic liquid crystal materials for its anisotropy and birefringence. An optical testing system is set up to evaluate its focusing performance and focal length, and the relationship between the focal length and the applied voltage is given. The array is coupled with a main lens and an image sensor to constitute a prototype of dual mode imaging camera, which can switch instantly between plenoptic imaging and normal imaging by turning on or off the applied voltage signals. Raw images are acquired in the two modes. It is obvious that the camera can capture three-dimensional plenoptic images in the plenoptic mode, as well as normal images in the normal mode.