ENDOSCOPIC FRINGEPROJECTION WITH LASER LIGHT SOURCES: ADAPTION OF BEAMSHAPING TECHNIQUES FOR A NEW KIND OF LASER ILLUMINATION OF MICRO FRINGE PROJECTION SYSTEMS |
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| C. Ohrt, M. Kästner, E. Reithmeier |
- Abstract:
- Inspection of assembly parts and tool surfaces based on geometric measurement still states an increasing and essential part in quality management. Suited measurement techniques thereto should be, above all, flexible and fast in order to keep up with the production process. Large area analysis of topographies nowadays can be realised by commercially available fringe projection systems which carry a satisfying and sufficient accuracy. However, these systems reach their limits for assemblies with a high geometric complexity, because of shading effects in the area of measurement. Within the scope of different research projects containing these difficulties, a new kind of micro fringe projection system has been developed at the institute of Measurement & Automatic Control.A fairly small laser illuminated flexible fibre bundle endoscope is used to carry out structured light measurements particularly for tiny details in shaded or difficult to reach regions. Due to the high measuring speed of comparatively large measuring volumes the generated data can immediately give online-feedback to the running manufacturing process and can be used for in situ optimization in the fabrication line to avoid high reject rates. Information and experimental results on measuring speed, accuracy and flexibility in certain fabrication processes will be presented in this work.
- Download:
- IMEKO-TC14-2011-23.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC14
- Event name:
- TC14 LMPMI Symposium 2011
- Title:
10th Symposium on Laser Metrology for Precision Measurement and Inspection in Industry
- Place:
- Braunschweig, GERMANY
- Time:
- 12 September 2011 - 14 September 2011