1.The principle of secondary spectrum is introduced and the equations of designing apochromatism objective lens based on wave aberration are presented.

1.介绍级光谱的基本原理,给法设计复消色物镜的方程组。

2.By chiseling a BOL on a surface of a lens, a apochromatic system is composed, which actualizes the system's apochromatism, as well as revising primary aberration.

2.并光学面刻画在透镜的表面，在校正系统初级像的同时，实现系统的复消色。