An Establishment Method of Overdrive Lookup Table

In the liquid crystal spatial light modulator, creating overdriving look-up table is a cumbersome process. A large number of experiments are needed to measure the driving time between different target phases and the final phase, and the overdrive look-up table occupies excessive memory space that slow down the response speed of the liquid crystal. Aiming at the problems above, an establishment method of overdriving look-up table is put forward. The method uses PWM driving and curve fitting, only two response time curves measured will complete the calculation of the entire drive table, which solves the problem of the complicated experiment of overdriving table construction. Finally, choosing the appropriate quantization wavelength to optimize the overdriving table, effectively improving the accuracy of the drive table and the maintainability and scalability of the system, and it is more suitable for engineering applications.