光路可逆原理是光学知识中的基本原理,为我们解决光学问题开辟了一条重要途径。一些用常规方法很难甚至无法处理的问题,用“光路可逆原理”分析往往能很快找到解题的方法,一些较复杂的问题,用“光路可逆原理”分析、求解,显得相当简捷明快。现举几例说明如下: The principle of optical path reversibility is the basic principle in optical knowledge, which opens up an important way for us to solve optical problems. Some problems that are difficult or even impossible to handle with conventional methods, the “optical path reversible principle” analysis can often quickly find the solution to the problem, some of the more complex problems, “the principle of the optical path reversible ” analysis, solution, appear Very simple and neat. Here are some examples of the following: