本文给出加畸变透镜的双振镜系统基本公式,各种畸变方程和畸变误差公式、调整方法和调整误差。得出该系统的定比值关系和误差的差值不变的特性关系。其结果都与大屏幕显示有关实验结果一致。最后,提出一种无畸变和平面屏幕线性扫描方案。 In this paper, the basic formulas of the double galvanometer system with distortion lens, the formulas of various distortion equations and distortion errors, the adjustment methods and the adjustment errors are given. Draw the relationship between the fixed ratio of the system and the error of the difference between the characteristics. The results are shown on the big screen with the experimental results. Finally, a non-distortion and flat screen linear scanning scheme is proposed.