凸透镜成像规律是初中物理必做的实验之一,笔者经多次探索与尝试,对传统实验装置的光源、刻度尺、光屏进行了改进,供广大一线教师参考. The law of imaging of convex lens is one of the experiments that junior middle school physics must do. After many times of explorations and attempts, the author improved the light source, scale ruler and light screen of the traditional experimental device for reference of the broad front line teachers.