如果你怀疑非球面能改善光学系统，请回顾一下光学历史吧！非球面已用于它们能胜任的每个应用——从便宜的取景器到价值数百万美元的侦察照相机系统中的主镜和副镜。参差、像散以及桶形和枕形畸变等成像缺陷是球形表面不可避免的结果——所有这些都能用非球面来克服。非球面有 If you suspect aspheric can improve the optical system, please review the optical history! Aspheres have been used for every application they can handle - from cheap viewfinders to primary and secondary mirrors in a multi-million dollar reconnaissance camera system. Divergence, astigmatism, and imaging defects such as barrel and pincushion are the unavoidable consequences of a spherical surface - all of which can be overcome with aspheric surfaces. Aspheric there