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Proceedings Paper

Fiber optical single-frame speckle interferometer for measuring industrial surfaces
Author(s): Jochen Kranz; Juergen Lamprecht; Andrea Hettwer; Johannes Schwider
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Paper 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.

Paper Details

Date Published: 29 September 1998
PDF: 4 pages
Proc. SPIE 3407, International Conference on Applied Optical Metrology, (29 September 1998); doi: 10.1117/12.323335
Show Author Affiliations
Jochen Kranz, Univ. of Erlangen-Nuernberg (Germany)
Juergen Lamprecht, Univ. of Erlangen-Nuernberg (Germany)
Andrea Hettwer, Univ. of Erlangen-Nuernberg (Germany)
Johannes Schwider, Univ. of Erlangen-Nuernberg (Germany)

Published in SPIE Proceedings Vol. 3407:
International Conference on Applied Optical Metrology
Pramod Kumar Rastogi; Ferenc Gyimesi, Editor(s)

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