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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 28 — Oct. 1, 2009
  • pp: 5266–5273

Distance sensing to rough semitransparent and multiscattering materials using dynamic speckles

Dmitry Semenov, Igor Sidorov, and Ervin Nippolainen  »View Author Affiliations

Applied Optics, Vol. 48, Issue 28, pp. 5266-5273 (2009)

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Noncontact methods of distance measurements to a moving surface using laser light are relevant for many industrial applications, such as surface profile and position monitoring, thickness measurements, and wear estimation. Application of existing methods (e.g., triangulation) is limited especially for nonhomogeneous, semitransparent and rough materials (paper, wood, plastic). The task is even more challenging for fast moving objects. We present a novel online method of distance sensing to semitransparent and multiscattering surfaces (papers, woods, polymers) based on spatial filtering of dynamic speckles. We validated a proposed method at the speed of the test surface as high as 35 m / s .

© 2009 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(160.2290) Materials : Fiber materials
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Remote Sensing and Sensors

Original Manuscript: May 8, 2009
Revised Manuscript: August 24, 2009
Manuscript Accepted: August 27, 2009
Published: September 21, 2009

Dmitry Semenov, Igor Sidorov, and Ervin Nippolainen, "Distance sensing to rough semitransparent and multiscattering materials using dynamic speckles," Appl. Opt. 48, 5266-5273 (2009)

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