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Proceedings Paper

New simultaneous initialization and online phase calculation in ESPI displacement measurement
Author(s): Harald Friebe
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Paper Abstract

A new in-plane ESPI displacement sensor will be proposed.It is suitable for high frequent 1D displacement measurement with high accuracy. For this measurement an on-line phase calculation is used. This technique is based on a standard phase shift algorithm and leads to the 1D displacement of one object point. Introducing a new simultaneous initialization the decorrelation limit of the present speckle measurement will be exceeded. This will realize a continuous displacement measurement.

Paper Details

Date Published: 30 June 1998
PDF: 9 pages
Proc. SPIE 3478, Laser Interferometry IX: Techniques and Analysis, (30 June 1998); doi: 10.1117/12.312953
Show Author Affiliations
Harald Friebe, Technical Univ. of Braunschweig (Germany)


Published in SPIE Proceedings Vol. 3478:
Laser Interferometry IX: Techniques and Analysis
Malgorzata Kujawinska; Gordon M. Brown; Mitsuo Takeda, Editor(s)

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