Increasing MEMS micromirror line-scan rates through 3D-printed micro-optics

Christopher, Jay and Donnachie, Mark and Uttamchandani, Deepak and Bauer, Ralf; (2023) Increasing MEMS micromirror line-scan rates through 3D-printed micro-optics. In: 2023 International Conference on Optical MEMS and Nanophotonics (OMN) and SBFoton International Optics and Photonics Conference (SBFoton IOPC). International Conference on Optical MEMS and Nanophotonics (OMN) and SBFoton International Optics and Photonics Conference (SBFoton IOPC) . IEEE, BRA. ISBN 9798350304022 (https://doi.org/10.1109/OMN/SBFotonIOPC58971.2023....)

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Abstract

Line-scan rates of mechanical scanners are in general limited to <100 kHz for scan mirror apertures of up to 1 mm. We present work to increase the line-scan rate of a MEMS micromirror beyond this through a scan multiplication unit consisting of a mirror, a cylindrical lens, and a 3D-printed cylindrical microlens array with 1 mm pitch and 2.5 mm effective focal length. Scan rates of up to 635 kHz at the scan line centre are demonstrated with seven array lenslets, with the compact multiplier having the potential to achieve over 1 MHz line-scan rate using higher element numbers.

ORCID iDs

Christopher, Jay ORCID logoORCID: https://orcid.org/0009-0009-0707-8947, Donnachie, Mark ORCID logoORCID: https://orcid.org/0000-0001-5391-236X, Uttamchandani, Deepak ORCID logoORCID: https://orcid.org/0000-0002-2362-4874 and Bauer, Ralf ORCID logoORCID: https://orcid.org/0000-0001-7927-9435;
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