以往,光学设计是根据几何象差的校正方案来判断设计结果的好坏。但是,象差理论本身只是实际情况近似的描写,而且是孤立地考虑各个因素对成象质量的影响。因此,国内外的光学设计者都遇到过这样的情况,从几何象差校正方案上来看,认为成象质量好的,而做出来的镜头象质差。相反的,有时设计者认为几何象差校正得不太好的设计结果,却做出了象质高的镜头。用光学传递函数则可以做到全面的、客观的评价光学系统象质的优劣。这是 In the past, optical design was based on geometric aberration correction program to determine the design of the results of good or bad. However, the theory of aberration itself is only an approximation of the actual situation, and the impact of various factors on image quality is considered in isolation. Therefore, the domestic and foreign optical designers have encountered such a situation, from the geometric aberration correction program point of view, that the image quality is good, and made the lens poor quality. On the contrary, designers sometimes think that the geometric aberration correction is not good design results, but made a high quality lens. With the optical transfer function you can do a comprehensive, objective evaluation of the pros and cons of the optical system image quality. this is