首先用CCD和图像采集卡将副像偏移的光学图像转换为计算机能识别的数据模式，然后利用图像处理程序求出副像偏移的值。
Firstly, CCD and image collecting board are used to transform the optical images of the excursion of subsidiary image into the datum patterns recognizable by computers.
然后利用CCD和图像采集卡将副像偏移的光学图像转换为计算机能识别的数据模式。
Then CCD and data Acquisition System are used to transform the optical images into computer recognizable data patterns.
本文立足于光波波段，设计出以计算机光学元件设计思想为基础的光学空间模式变换器，实现对光束模式的转换。
In this paper, we design an optical space mode converter which is used in light wave band, and it realize a specific mode transformation from the ideology of computer optical element.
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