在光学上,夫琅禾费衍射(以约瑟夫·冯·夫琅和费命名),又称远场衍射,是波动衍射的一种,在场波通过圆孔或狭缝时发生,导致观测到的成像大小有所改变,成因是观测点的远场位置,及通过圆孔向外的衍射波有渐趋平面波的性质。
以光源、衍射孔(缝)、屏三者的相互位置不同来分 夫琅禾费衍射 ( Fraunhofer diffraction ): 光源 s 距衍射小孔或狭缝以及屏幕P距小 孔或狭缝都在无限远处。
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The optical model of GMLM is found to deduce the Fraunhofer diffraction pattern through the projection optical system based on the scalar diffraction method.
建立了GMLM的等效光学模型,用标量衍射方法推导出了GMLM经过投影光学系统成像的夫琅禾费衍射图样复振幅分布。
参考来源 - 微光机电系统光栅平动式光调制器的激光投影研究·2,447,543篇论文数据,部分数据来源于NoteExpress
基于夫琅禾费衍射理论,推导了平行光入射变栅距光栅后衍射光强的角度分布。
On the basis of Fraunhofer diffraction theory, the diffraction patterns of a Varied Line-space (VLS) grating were obtained for incidence beam in parallel and uniform.
基于夫琅禾费衍射理论和巴比涅互补原理,提出了利用激光衍射对细丝直径进行动态测量的方法。
Based on the theory of Fraunhofer diffraction and Babinet principle, a method is proposed for dynamically measuring fine-wire diameter using laser diffraction.
结果显示,该方法思路清晰,结果准确可靠,可作为教学中分析夫琅禾费衍射现象的另一种有效方法。
The results of simulation analysis to single slit, aperture and multi-slits show that this method is a simple and credible way to analyze Fraunhofer diffraction in teaching.
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