The key point of the zooming optical system design is how to solve the image surface drift problem during the process of zooming.
变焦距光学系统是一种焦距可连续改变而像面位置保持稳定的光学系统。
A new method is proposed for measuring the veiling glare index of long focal length optical systems based on the analysis of the properties and their application fields of present measurement devices and the theoretical analysis on the stray light sources is also given.
在分析现有杂光系数测量的基础上，提出了一种新的长焦距光学系统杂光系数测量的方法，并对这种方法进行了理论分