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. 2022 Nov 23;12:20155. doi: 10.1038/s41598-022-24210-9

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© The Author(s) 2022

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Confocal laser endomicroscope (CLE) and MEMS scanner. Photo is shown of (a) the packaged instrument with rigid distal tip dimensions of 2.4 mm in diameter and 10 mm in length, and (b) forward passage through the working channel of a standard medical endoscope (Olympus CF-HQ190L). (c) Front view of the scanner shows a reflector with a 50 μm diameter central aperture to allow excitation beam to pass. The scanner is mounted on a gimbal driven by a set of orthogonal comb-drive actuators. The resonance frequencies of this device are determined by the dimensions of the torsional springs. (d) Side-view of the scanner shows scanner mounted on the holder with wires to electrode anchors that provide points of connection for the drive signals and power.