Abstract
In a recent paper [J. Opt. Soc. Am. A 31, 2476
(2014) [CrossRef] ], a linear
expansion of the optical transfer function (OTF) of an imaging system
in which the expansion coefficients are related to its wavefront
errors has been developed. It is claimed that the OTF can be
calculated quickly by using this approach. We provide instead
closed-form basis functions that are not determined recursively.
Numerical examples demonstrate that the OTF calculation by a digital
autocorrelation of the pupil function is much faster regardless of the
wavefront complexity.
© 2016 Optical Society of
America
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