衍射受限的相干光成像研究中,存在两种计算公式,一种是在特定近似条件下导出的单透镜成像系统像光场振幅分布计算公式,可以推广到多元件构成的光学系统中。另一种是直接计算光学系统像光场振幅及相位分布的公式。为了分析两种公式的实用价值,以两个透镜组成的成像系统为例,在不同空间位置放置孔径光阑,对比了两种公式的理论计算与实验测量结果。

There are two calculation formulae in the study of diffraction limited coherent light imaging. One is the formula for calculating the amplitude distribution of the image light field of single lens imaging system under specific approximate conditions. This formula can be extended to the imaging calculation of an optical system composed of multiple elements. The other is the formula which can directly calculate the amplitude and phase distribution of the image light field of an optical system. In order to analyze the practical value of these two formulae, this paper takes the imaging system composed of two lenses as an example, places aperture stops at different spatial positions, and compares the theoretical calculations and experimental measurement results of the two formulae.