研究环形光阑的衍射场

The study diffraction fields of annular aperture

由波前相因子判断法并考虑到孔径的影响,来揭示环形光阑的夫琅禾费衍射场所含成分。分别给出衍射场的积分表达式,进而导出像面衍射场振幅分布公式,并显示出像面衍射场光强分布图。为光阑的夫琅禾费衍射场的分析提供了一种新的分析方法。

Based on the method of wavefront phase-factors and considering of the influence of limited aperture of grating, we have analysed out the diffraction fields by annular aperture which contain components,and offered integral expressions of the diffraction fields are given. It derivated formulae of the amplitude distribution of diffraction fields along image plane. And Finally obtained the intersity of light distribution. This study may provide a theoretical method for the annular aperture Fraunhofer diffractio.