Effects of defocus and other quadratic errors on OTF | Zendy

Kevin Liang | Zendy; Miguel A. Alonso | Zendy

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Effects of defocus and other quadratic errors on OTF

Author(s) -

Kevin Liang,

Miguel A. Alonso

Publication year - 2017

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.42.005254

Subject(s) - optics , astigmatism , optical transfer function , quadratic equation , simple (philosophy) , spatial frequency , quadratic function , physics , function (biology) , point spread function , geometrical optics , mathematics , geometry , philosophy , epistemology , evolutionary biology , biology

Even for the simplest nontrivial aberration, defocus, and for a circular pupil, there is no theoretical closed-form expression for the optical transfer function (OTF). By using a simple approximation, we provide a simple yet accurate approximation for the OTF of a defocused system. We generalize this approach to generic quadratic aberrations, including astigmatism.

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