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Imaging transfer function in the Fresnel approximation

机译:菲涅耳近似中的成像传递函数

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摘要

The amplitude transfer function for coherent imaging in the Fresnel approximation is derived. It is shown that this transfer function can solve problems in Fresnel diffraction that the more usual Fraunhofer approximation cannot. Because of its simple form, it allows for the formal solution of the aperture specification problem in diffractive optics by giving the complex optics transmission function in terms of a given object plane amplitude distribution and a desired image plane amplitude distribution. Two examples of this use are presented. Finally, the generalization of this transfer function to imaging in partially coherent and incoherent light follows easily.
机译:推导了菲涅耳近似中相干成像的振幅传递函数。结果表明,该传递函数可以解决菲涅耳衍射中更常见的弗劳恩霍夫近似无法解决的问题。由于其简单的形式,它通过给定的物平面振幅分布和所需的像平面振幅分布给出复杂的光学传递函数,从而可以正式解决衍射光学中的孔径规格问题。给出了这种用法的两个例子。最后,很容易将这种传递函数推广到部分相干和非相干光中成像。

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