The general theory and methods from geometrical optics to measure the dimension of an object were applied to design a diameter measuring system, which was based on a linear array image sensor.
运用几何光学测量物体尺寸的理论和方法，设计了一种基于线阵图像传感器的线径测量系统中的成像系统。
In this case, geometrical design methods are inadequate, but current physical optics methods are too slow.
在这种情况下，几何光学的设计方法已经无能为力，但是，现阶段的基于物理光学的计算速度太慢。
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