In this paper ,the expressions for calculating axial and radial intensity distributions of the Fresnel zone plate is rigorously derived based on Helmholtz Kirchhoff diffraction integration,and numerical simulations are carried out without any approximation.
根据亥姆霍兹－基尔霍夫积分，严格地推导了菲涅尔波带片的光场的轴向和径向的强度分布表达式。
Starting from the Kirchhoff diffraction integral,the classical formula of the OTF in the Fraunhofer approximation is a new derived in the exit pupil coordinates and in the entrance pupil coordinates.
本文从基尔霍夫衍射积分出发重新推导点象的振幅分布，并以出瞳坐标表示ＯＴＦ自相关积分，进而利用分片多项式插值解决变形成象ＯＴＦ的计算问题。
When using Kirchhoff integral formulation in the transformation from near-field to far-field,the confining condition of far-field approximation makes the simulation results are less accurate when the field point is small from the source point.
在利用基尔霍夫积分方程进行近远场变换时,由于采用了远场近似条件,导致外推的结果不能应用于近场问题。