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 µm 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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  1. O. Fujimura, A. L. Mark, and A. K. CherylDirect in vivo visualization of right cardiac anatomy by fibreoptic endoscopy: Observation of radiofrequency-induced acute lesions around the ostium of the coronary sinusEur. Heart J.199415534540
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  9. M. A. A. Neil, R. Juškaitis, and T. WilsonMethod of obtaining optical sectioning by using structured light in a conventional microscopeOpt. Lett.19972219051907
  10. M. Vogel, Z. Yang, A. Kessel, C. Kranitzky, C. Faber, and G. HäuslerStructured-illumination microscopy on technical surfaces: 3D metrology with nanometer sensitivityProc. of SPIE2011808280820S
  11. K.-N. JooFourier domain analysis on continuously scanned structured illumination microscopyMea. Sci. Technol.201223057002
  12. R. Fiolka, B. Markus, and S. AndreasStructured illumination in total internal reflection fluorescence microscopy using a spatial light modulatorOpt. Lett.20083316291631
  13. S. Kuiper, B. H. W. Hendriks, L. J. Huijbegts, A. Hirschberg, C. A. Renders, and M. A. J. van AsVariable-focus liquid lens for portable applicationsProc. of SPIE20045523100109

Other (13)

O. Fujimura, A. L. Mark, and A. K. CherylDirect in vivo visualization of right cardiac anatomy by fibreoptic endoscopy: Observation of radiofrequency-induced acute lesions around the ostium of the coronary sinusEur. Heart J.199415534540

H.-D. Jho and R. L. CarrauEndoscopy assisted transsphenoidal surgery for pituitary adenomaActa Neurochir.199613814161425

E. Dupont, F. Lamarque, C. Prelle, and T. RedarceTri-dimensional optical inspection based on flexible image guide: first step toward 3D industrial endoscopyProc. 11th Biennial Conference on Engineering Systems Design and AnalysisFrance2012Jul.477483

J. Baran and J. WalterInspection hole plug for gas turbine engineU.S. Patent19834,406,580

L. Deck and P. GrootHigh-speed noncontact profiler based on scanning white-light interferometryAppl. Opt.19942273347338

B. S. Lee and C. S. TimothyProfilometry with a coherence scanning microscopeAppl. Opt.19902937843788

C. Yamamoto and M. HitoshiStereoscopic endoscopeU.S. Patent19995,971,915

H. Haneishi, O. Takashi, and M. YoichiProfilometry of a gastrointestinal surface by an endoscope with laser beam projectionOpt. Lett.199419601603

M. A. A. Neil, R. Juškaitis, and T. WilsonMethod of obtaining optical sectioning by using structured light in a conventional microscopeOpt. Lett.19972219051907

M. Vogel, Z. Yang, A. Kessel, C. Kranitzky, C. Faber, and G. HäuslerStructured-illumination microscopy on technical surfaces: 3D metrology with nanometer sensitivityProc. of SPIE2011808280820S

K.-N. JooFourier domain analysis on continuously scanned structured illumination microscopyMea. Sci. Technol.201223057002

R. Fiolka, B. Markus, and S. AndreasStructured illumination in total internal reflection fluorescence microscopy using a spatial light modulatorOpt. Lett.20083316291631

S. Kuiper, B. H. W. Hendriks, L. J. Huijbegts, A. Hirschberg, C. A. Renders, and M. A. J. van AsVariable-focus liquid lens for portable applicationsProc. of SPIE20045523100109

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