Fresnel圆孔衍射研究

Frosnel圆孔衍射是光学中的重要内容之一，目前大多讨论的是单色发散点光源经小孔后衍射会聚波在轴线上的光强分布规律，较多使用半波法和矢量图解法．本文从惠更斯-菲涅尔原理出发，并对单色发散球面波和单色会聚球面波入射经小孔后会聚衍射光波和发散衍射光波的衍射规律作了研究，得出了一些有意义的结论.

Research on Fresnel Circular Aperture Diffraction

Fresnel circular aperture diffraction is an important content in optics. At present, the intensity of light distribution on the axis of diffraction covergent light wave after the diffraction from monochromatic divergent spot to small aperture is often discussed. At the same time, the methods of half-wave hand and vector graph are also discussed. From Huygens-Fresnel pronciple, this paper will derive the diffraction law about convergent diffraction light wave and divergent diffraction light spherical wave and monochromatic covergent spherical wave into a small circular aperture diffraction. From the research, some important results are achieved.