Fiber-based high-speed fringe projection profilometry

Steven Johnson*, Hal Gee, Faith Nwachi, Simon Peter Mekhail

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Phase shift profilometry has become a standard technique for recording the surface of an object using the projection of sinusoidal patterns. We present a method of projecting the patterns via a pair of single-mode optical fibers mounted within a needle. The system presented can capture sub-millimetre precision depth profiles at 60 frames per second. The key features of the system that enable the high-speed imaging are the creation of an automated calibration system and developments in the image unwrapping and reconstruction algorithms to produce high fidelity surface measurements. These methods produce a compact projection system capable of accurate and fast profilometry.
Original languageEnglish
Article number111173
Number of pages6
JournalOptics and Laser Technology
Volume177
Early online date21 May 2024
DOIs
Publication statusPublished - 31 Oct 2024

Keywords

  • fiber imaging
  • imaging
  • interferometry
  • profilometry

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