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Phase pupil functions for focal-depth enhancement derived from a Wigner distribution function

机译:从Wigner分布函数得出的用于聚焦深度增强的相位光瞳函数

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摘要

A method for obtaining phase-retardation functions, which give rise to an increase of the image focal depth, is proposed. To this end, the Wigner distribution function corresponding to a specific aperture that has an associated small depth of focus in image space is conveniently sheared in the phase-space domain to generate a new Wigner distribution function. From this new function a more uniform on-axis image irradiance can be accomplished. This approach is illustrated by comparison of the imaging performance of both the derived phase function and a previously reported logarithmic phase distribution. (C) 1998 Optical Society of America. [References: 19]
机译:提出了一种获得相位延迟功能的方法,该方法引起图像焦深的增加。为此,在相空间域中方便地剪切与在图像空间中具有相关的小景深的特定孔径相对应的维格纳分布函数,以生成新的维格纳分布函数。通过该新功能,可以实现更均匀的同轴图像辐照度。通过比较导出的相位函数和先前报告的对数相位分布的成像性能来说明此方法。 (C)1998年美国眼镜学会。 [参考:19]

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