衍射理论的另一个重要应用就是研究准直光束的远场发散角。
Another important application of diffraction theory is the study of the far field divergence Angle of a collimated light beam.
采用软件细分的方法，处理干涉条纹的移动量，得到被测点相对于准直光束的偏移量。
Movement of the interference stripes are dealt with by means of software subdivision, after that offsets of the spot to the laser beam is gained.
推导出了正交的两组准直微透镜阵列的面形公式；计算了准直光束的准直精度和聚焦光学系统参数。
The orthogonal surface equation of the collimating micro-lenses array is derived, the divergence angles after collimating and the parameters of the focused lens are calculated.
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