对立体成型技术中广泛使用的振镜扫描系统进行了理论分析，指出了振镜的二维扫描偏转角和平面坐标之间存在着非线性映射关系．提出了一种实用的校正算法，该算法用理论数据与激光束在相应点的实际数据进行比对，制成校正表，按插值算法校正实际的枕形畸变及其它误差．该算法适用于使用振镜实现二维扫描的系统，能对应用这种原理工作的激光成型设备进行现场校正．

The theoretical analysis of galvanometer scanning system widely using in the technology is described. It's shown that the relationship between the deflection angles of the 2-D galvanometer scanner and the corresponding X-Y coordinates value is nonlinear. A practical method is put forward in the research. Its basic principle is that a correction table is done through comparing the theoretical data with the corresponding data in laser scanning,then the distortion and the others errors are corrected according to a interpolating algorithm. The correction technology is suitable for all 2-D scanning system using two galvanometer scanner,and can correct any laser Rapid Prototyping equipment applying the principle of two galvanometer scanner.