Fresnel approximation for off-axis illumination of a circular aperture
Fresnel approximation for off-axis illumination of a circular aperture
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圆形孔径离轴照明的菲涅尔近似
DOI：
10.1364/josaa.10.000984
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发表时间：
1993
影响因子：
1.9
通讯作者：
M. Gu
中科院分区：
文献类型：
--
作者：
C. Sheppard;P. P. Roberts;M. Gu
对于圆孔衍射的菲涅耳近似，已经提出了各种公式。这些公式可以描述会聚照明、有限菲涅耳数和离轴照明的影响。提出了依赖于焦点和观察点坐标的另一项的保留。这导致了重新定义的轴向光学坐标，从而改进了对离轴点的衍射场的预测。
Various formulations have been proposed for the Fresnel approximation for diffraction by a circular aperture. These formulations can describe the effects of convergent illumination, finite value of Fresnel number, and off-axis illumination. The retention of a further term, which is dependent on the coordinates of the focus and the observation point, is proposed. This results in a redefined axial optical coordinate, giving improved prediction of the diffracted field for off-axis points.