任意三角形的夫琅和费衍射象的光强分布

The Light Intensity Distribution of Fraunhofer Diffraction Pattern for a Pupil of an Arbitrary Triangle

本文应用付里叶变换计算光孔为任意三角形的夫琅和费衍射像的光强分布,得到了衍射光束沿垂直于三角形各边的方向扩展的结论,还推论出接收屏上的衍射光束扩展的方向完全由衍射屏上的光孔边缘决定.

In this papcr the light intensity distribution of Fraunhofer diffraction patlern with the pupil being an arbitrary triangle is calculated by means of Fourier transform. A conclusion is reached that diffraction beams spreading out arc perpendicular to each side of the triangle. It is deduced that spreading direction of the diffraction beam on the receiving screen is determined completely by the edges of the pupil on the diffraction screen.