Short focal length tunable liquid crystal lenticular lens array based on fringe field effect

摘要

A liquid crystal (LC) lenticular lens array based on fringe field effect is proposed. The gradient refractive index (GRIN) profile can be generated in the LC layer because of the fringe field between the strip-shaped electrodes and the bottom electrode. The proposed LC lenticular lens array possesses ideal lens-like phase profile and shortest focal length (1.199 mm) when the driving voltage is 5.4 V. The focal length can be tuned with millisecond response time by changing the driving voltage of the proposed LC lenticular lens array. The rise time tau(rise) and decay time tau(decay) of the proposed LC lenticular lens array are 162 and 94 ms, respectively.