Li, P. and Maiden, A. orcid.org/0000-0002-8192-8235 (2018) Lensless LED matrix ptychographic microscope: problems and solutions. Applied Optics, 57 (8). pp. 1800-1806. ISSN 1559-128X
Abstract
In this paper, a lensless microscope based on ptychography is presented. It disposes of the mechanic movement necessary for conventional ptychography, instead using an LED matrix to obtain a diverse set of diffraction data. This data is subject to multiple experimental factors that deviate from the standard version of ptychography: namely, imprecise knowledge of the LED positions, partial temporal and spatial coherence, and varying brightness and illumination distribution between individual LEDs. Despite these difficulties, we show here that the diversity in the ptychographic data allows an iterative phase retrieval algorithm to recover excellent, high-resolution images of a resolution test target and a biological sample.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Optical Society of America. This is an author produced version of a paper subsequently published in Applied Optics. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 20 Sep 2018 10:08 |
Last Modified: | 05 Mar 2019 01:38 |
Published Version: | https://doi.org/10.1364/AO.57.001800 |
Status: | Published |
Publisher: | Optical Society of America |
Refereed: | Yes |
Identification Number: | 10.1364/AO.57.001800 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135940 |