对空间滤波法的零频滤波与刀口滤波显示位相型物体的非均匀位相分布进行较为普遍且详尽的分析讨论，并给出一些实验结果。

Universally analyzed and discussed in this paper is the visualization of inhomogeneous phase distribution of phase objects with spatial zero frequency filtering and knife edge filtering method.

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本文基于标量衍射理论，建立了简明的对准误差与二元光学器件衍射效率的分析模型，得到了适用于一般位相分布器件的衍射效率的简便实用的计算公式。

Based on the theory of scalar diffraction, an error model is established to investigate the effect of alignment error on the efficiency of binary optics elements.

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