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菲涅耳条纹
Fresnel fringe
- 利用菲涅耳衍射理论，推导出相干光照明下无衍射系统的点扩散函数(PSF)的形式，并分析出点扩散函数的条纹疏密与锥镜的夹角和点光源的位置有关。
The form of the PSF has been deduced according to the Fresnel diffraction, and it has been analyzed that the frings density of the PSF depends on the axicon's refracting angle θ and the distance l between the point light source to lens L2.
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