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Proceedings Article

Fiber optical single-frame speckle interferometer for measuring industrial surfaces

[+] Author Affiliations
Jochen Kranz, Juergen Lamprecht, Andrea Hettwer, Johannes Schwider

Univ. of Erlangen-Nuernberg (Germany)

Proc. SPIE 3407, International Conference on Applied Optical Metrology, 328 (September 29, 1998); doi:10.1117/12.323335
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From Conference Volume 3407

  • International Conference on Applied Optical Metrology
  • Pramod K. Rastogi; Ferenc Gyimesi
  • Balatonfured, Hungary | June 08, 1998

abstract

Speckle interferometry is a sophisticated technique for the non-contact, high precision measurement of form, deformation and vibration of technical surfaces. In this paper, a new single frame phase-shifting speckle interferometer for the quantitative measurement of out-of-plane-deformations is described and first measurements are presented. With a binary phase grating, six interference patterns are generated at a time. They are acquired within one frame time of a single CCD- camera, thus minimizing errors due to thermal fluctuations or vibrations. The use of fiber optics allows a flexible application of the system under industrial conditions and a compact design of the sensor head.

© (1998) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Jochen Kranz ; Juergen Lamprecht ; Andrea Hettwer and Johannes Schwider
"Fiber optical single-frame speckle interferometer for measuring industrial surfaces", Proc. SPIE 3407, International Conference on Applied Optical Metrology, 328 (September 29, 1998); doi:10.1117/12.323335; http://dx.doi.org/10.1117/12.323335


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