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对测量凸透镜焦距的传统实验方法进行改进,采用激光为光源进行测量的一种新型简易方法,该方法操作简单,可直接读取焦距测量值.实验结果表明,测量结果与传统方法相比更准确.“,”To improve the traditional method for measuring focal length of convex lens,a new method of taking a laser light as source is used.It is simple and values of the focal length are directly measured.The results show that the measured method is more accurate than the traditional one.