一、前言光学传递函数是现在评价象质的一种比较完善的理论和方法。一个光学系统的传递函数既可以从理论上计算,也可以由实际测得。但是各种象差对传递函数有什么影响,是难于具体表达的。各种光学系统的实际象差的构成是错综复杂的,而三级象差可以给我们提供线索和预示。那么,是否可以从各种象差对传递函数的影响和效应中找到类似的情况,表达为一种较为明显的函数关系,使我们能一目了然,即使是粗略的,这对于帮助我们理解和分析问题也 I. INTRODUCTION The optical transfer function is a relatively perfect theory and method of evaluating the image quality now. The transfer function of an optical system can be calculated both theoretically and practically. However, it is difficult to express the effect of various aberrations on the transfer function. The composition of the actual aberrations for various optical systems is complex and the third-order aberrations give us clues and predictions. Then, whether similar effects can be found in the effects and effects of transfer functions from various aberrations can be expressed as a more obvious function relation, so that we can see at a glance, even if it is rough, it is helpful for us to understand and analyze the problems and also