从电光效应出发，对ＬｉＮｂＯ３电光偏转器的基本品质因子进行研究，导出了偏转器的设计公式，用有限差分法计算了四柱面电极电光偏转器的电场分布，对不同结构参数，给出了梯度线性度和结构因子 Based on the electro-optic effect, the fundamental quality factor of the LiNbO3 electro-optic deflector is studied. The design formula of the deflector is derived. The electric field distribution of the four-cylinder electrode electro-optic deflector is calculated by finite difference method. For different structural parameters, Linearity and structure factor