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Related Experiment Video

Updated: Apr 17, 2026

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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MEMS scanning micromirror for optical coherence tomography.

Matthew Strathman1, Yunbo Liu1, Ethan G Keeler1

  • 1Department of Electrical Engineering, University of Washington, Seattle, WA, 98195, USA.

Biomedical Optics Express
|February 7, 2015
PubMed
Summary

This study introduces a miniaturized optical coherence tomography (OCT) imaging system using a micro-electromechanical system (MEMS) scanner. Advanced image processing corrects for mirror imperfections, enabling endoscopic OCT in standard endoscopes.

Keywords:
(100.0100) Image processing(170.2150) Endoscopic imaging(230.0230) Optical devices(230.4685) Optical microelectromechanical devices

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Area of Science:

  • Biomedical Engineering
  • Optical Imaging
  • Micro-systems Engineering

Background:

  • Optical coherence tomography (OCT) is a valuable non-invasive imaging modality.
  • Miniaturizing OCT probes for endoscopic applications is challenging.
  • Existing scanning mechanisms limit probe size and integration.

Purpose of the Study:

  • To develop a miniaturized OCT imaging system for endoscopic applications.
  • To integrate a micro-electromechanical system (MEMS) micromirror scanner for beam steering.
  • To enhance OCT image quality using advanced image processing techniques.

Main Methods:

  • Designed and implemented an endoscopic-inspired OCT system.
  • Utilized a MEMS micromirror for optical beam scanning.
  • Applied image processing algorithms to correct for MEMS scanner non-idealities.

Main Results:

  • Successfully demonstrated OCT imaging using a MEMS scanner.
  • Achieved image enhancement by correcting for mirror performance deviations.
  • Validated the feasibility of integrating the system into a standard endoscope's working channel.

Conclusions:

  • The MEMS-based OCT system is suitable for endoscopic applications.
  • Advanced image processing is effective in overcoming MEMS scanner limitations.
  • This technology enables smaller, more versatile endoscopic imaging probes.