Focusing liquid crystal lens based on FPGA control and design method

The invention relates to an FPGA (Field Programmable Gate Array) control-based focusable liquid crystal lens and a design method thereof, which are used for obtaining the conditions of liquid crystal refractive index and phase change under different voltage conditions through analysis and simulation. The fringe electrode structure for controlling voltage change is designed on ITO glass for manufacturing a liquid crystal box according to the change characteristics of the fringe electrode structure, and the voltage of the fringe electrode on the liquid crystal box is controlled to change in a gradient manner through an FPGA, so that the refractive index in liquid crystal is changed, phase resonance is caused, and the focal length tunable function of the liquid crystal lens is realized. And meanwhile, specific stripe partitioning and stripe electrode voltage control are carried out on different wavebands in a time domain, so that coincidence of focuses of different wavebands is realized, and basic research work