Extended depth of field of an imaging system with an annular aperture

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2023-03-27
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Language
en
Pages
14
11102-11115
Series
Optics Express, Volume 31, issue 7
Abstract
A common drawback of high-resolution optical imaging systems is a short depth of field. In this work, we address this problem by considering a 4f -type imaging system with a ring-shaped aperture in the front focal plane of the second lens. The aperture makes the image consist of nearly non-diverging Bessel-like beams and considerably extends the depth of field. We consider both spatially coherent and incoherent systems and show that only incoherent light is able to form sharp and non-distorted images with extraordinarily long depth of field.
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Publisher Copyright: © 2023 OSA - The Optical Society. All rights reserved.
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Citation
Hilden , P & Shevchenko , A 2023 , ' Extended depth of field of an imaging system with an annular aperture ' , Optics Express , vol. 31 , no. 7 , pp. 11102-11115 . https://doi.org/10.1364/OE.484290