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Optical Engineering

Objective Speckle Method Using Stick-On Foil And Its Applications
Author(s): Jinhu Han; Meirong Tu
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Paper Abstract

Objective speckle from a stick-on foil is a new approach to applying the objective white light speckle method to in-plane displacement measurements. By a relatively easy technique a thin aluminum foil is mounted onto the specimen surface and a random grating is scratched onto it, yielding high reflectance and fine optical details. After double exposure by a direct recording system without using a lens, the resulting holographic film possesses a broad spatial spectrum and displacement information. Full-field contour maps of equal displacement can be obtained that are of good contrast and high sensitivity and that have a large adjustable measurement range. The method can be applied to practical engineering problems for both plane and developable curved surfaces.

Paper Details

Date Published: 1 March 1988
PDF: 3 pages
Opt. Eng. 27(3) 273207 doi: 10.1117/12.7977913
Published in: Optical Engineering Volume 27, Issue 3
Show Author Affiliations
Jinhu Han, Chinese Academy of Sciences (China)
Meirong Tu, Chinese Academy of Sciences (China)

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