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. 2023 Apr 5;28(4):040901. doi: 10.1117/1.JBO.28.4.040901

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© 2023 The Authors

Published by SPIE under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Fig. 5 — PGP is an example of a transmission grating configuration, where no reflective device was used. (a) The working mechanism of a PGP imaging camera (adapted from Ref. 125). (b) An example of a device that uses PGP (reproduced from Ref. 138).