摘要
在成像光学系统的设计过程中必须对其垂轴色差进行校正。在一束特定成像光束所形成的弥散斑上,作色差计算的光斑中心不是主光线与像面的交点,而应该是弥散斑中所有光线交点的"重心"所在,也就是所谓的质心,它是由被追迹的光线的分布和数量决定的。本文介绍了如何基于质心计算垂轴色差,提供了在ZEMAX中编写的计算参考波长质心坐标的宏程序,有助于设计结果与实际情况的进一步吻合。
The lateral chromatic aberration must be corrected during designing optical system. In the spot diagram formed by a specified beam, the center of the spot for calculating chromatic aberration should not be the cross point of principal ray with image plan, but the weighted mean of coordinates of all traced rays, namely, centroid of rays, which is determined by the distribution of traced rays. This paper discussed how to calculate lateral chromatic aberration based on centroid of rays. A ZEMAX macro for calculating centroid coordinate of reference wavelength is provided, which helps to design more practical optical system.
出处
《红外技术》
CSCD
北大核心
2007年第6期349-351,共3页
Infrared Technology
关键词
垂轴色差
质心
主光线
优化
lateral chromatic aberration
centroid
principal ray
optimization
