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. 2019 Aug 2;9:11260. doi: 10.1038/s41598-019-47689-1

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Developed laboratory DIHM and 3D printable DIHM setup. Schematics of the (a) fibre-coupled LD pickup inline illumination. (b) LED pinhole setup. (c) Image of the laboratory fibre-coupled laser-pickup setup and dimensions. (d) Image of the complete 3D-printed LED set-up. (e) Exploded view of the three developed and used 3D printed parts with dimensions (CAD files open accessible, see methods chapter). Schematically depicted light propagation not to scale.