在几何光学中 ,有许多习题常涉及到光源、物体或光具以及像、影或光斑的运动 ,这类习题往往起点较高 ,难度较大 ,物理情景新颖 ,要求必须灵活地将有关光学与运动学知识紧密联系综合起来进行分析 ,方可顺利求解 .下面试举几例 ,供读者参考 .1　与匀速直线运动相联系[例 1 ]如图 In geometry optics, there are many exercises that often involve the movement of light sources, objects, or optical devices, as well as images, shadows, or flares. These types of exercises often have a higher starting point and are more difficult. The physical situation is novel, requiring that the optical and The knowledge of kinematics is closely linked and analyzed. Only in this way, can you solve the problem. Here are some examples for readers’ reference.1 It is related to uniform linear motion [Example 1]