基尔霍夫衍射公式

根据辐射理论重新设定了平面衍射物的边界函数，并以此条件推导了基尔霍夫衍射公式，并赋予新的含义。

Firstly according to radiation theory the boundary function of planar diffraction body is given , based on this condition the Kirchhoff diffraction formula is deduced and obtained . The physical meanings are given as well .

本文从基尔霍夫衍射公式出发，对椭圆孔的夫朗和费衍射作了较为严密的理论推导，并由此分析了衍射场的衍射图样及光能量的分布规律。

By means of Kirchhoff 's diffraction formula , Fraunhofer 's diffraction by elliptical aperture is theoretically discussed and , thereby , the diffraction pattern and the distribution law of light energy on the diffraction field are given .

通过对基尔霍夫衍射积分公式的分析，证明i是次级子球面波各向不均匀发射的结果，并且是波动方程要求的。

Then based on the analysis for the kirchhoff diffraction theory , it has been showed that the I is the result of the unhomogeneously emission of the secondary disturbance spherical wavelets , and stems from the wave equation .

数值计算比较表明，使用文中所给公式与直接用基尔霍夫衍射积分公式作数值计算的结果完全一致，而在近场使用瑞利衍射积分与文中结果有较大差异。

Numerical examples show that the results obtained by means of the formula given in this paper are in good agreement with the direct numerical integration of the Kirchhoff integral formula . In the near field there are noticeable discrepancies between our formula and the Rayleigh diffraction integral .