Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Endoscopic Precise 3D Surface Profiler Based on Continuously Scanning Structured Illumination Microscopy

  • Park, Hyo Mi (Department of Photonic Engineering, Chosun University) ;
  • Joo, Ki-Nam (Department of Photonic Engineering, Chosun University)
  • Received : 2017.11.20
  • Accepted : 2018.04.03
  • Published : 2018.04.25
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Abstract

We propose a precise 3D endoscopic technique for medical and industrial applications. As the 3D measuring principle, the continuously scanning structured illumination microscopy (CSSIM), which enables to obtain 3D sectional images by the synchronous axial scanning of the target with the lateral scanning of the sinusoidal pattern, is adopted. In order to reduce the size of the probe end, the illumination and detection paths of light are designed as coaxial and a coherent imaging fiber bundle is used for transferring the illumination pattern to the target and vice versa. We constructed and experimentally verified the proposed system with a gauge block specimen. As the result, it was confirmed that the 3D surface profile was successfully measured with $16.1{\mu}m$ repeatability for a gauge block specimen. In order to improve the contrast of the sinusoidal illumination pattern reflected off on the target, we used polarizing optical components and confirmed that the visibility of the pattern was suitable in CSSIM.

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References

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