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Shape Measurement Based on Combined Reduced Phase Dual-directional Illumination Digital Holography and Speckle Displacements
Linnaeus University, Faculty of Technology, Department of Physics and Electrical Engineering. Luleå University of Technology.ORCID iD: 0000-0003-2960-3094
Korea University, Korea.
2018 (English)In: Progress In Electromagnetics Research Symposium 2018, IEEE, 2018, p. 184-189Conference paper, Published paper (Refereed)
Abstract [en]

We present a dual-directional illumination digital holographic method to increase height range measurement with a reduced phase ambiguity. Small change in the illumination angle of incident introduce phase difference between the recorded complex fields. We decrease relative phase difference between the recorded complex field 279 and 139 times by changing the angle of incident 0.5° and 1°, respectively. A two cent Euro coin edge groove is used to measure the shape. The groove depth is measured as ≈300μm . Further, numerical re-focusing and analysis of speckle displacements in two different planes are used to measure the depth without a use of phase unwrapping process.

Place, publisher, year, edition, pages
IEEE, 2018. p. 184-189
Series
Progress in Electromagnetics Research Symposium, ISSN 1559-9450
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Physics, Electrotechnology
Identifiers
URN: urn:nbn:se:lnu:diva-77555DOI: 10.23919/PIERS.2018.8597821ISI: 000458673700026Scopus ID: 2-s2.0-85060910902ISBN: 978-4-8855-2316-8 (electronic)ISBN: 978-1-5386-5455-2 (print)OAI: oai:DiVA.org:lnu-77555DiVA, id: diva2:1244999
Conference
Progress In Electromagnetics Research Symposium (PIERS), 1-4 August, 2018, Toyama, Japan
Available from: 2018-09-04 Created: 2018-09-04 Last updated: 2019-08-29Bibliographically approved

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Khodadad, Davood

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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