Abstract

The measurement of lateral displacement employing a doubly exposed speckle photograph according to the methods proposed by Archbold et al. and by Butters and Leendertz has been studied. The fringe visibility has been found as a function of the displacement and the resolution of the observing system. The spatial extent of the source has also been considered when a spectral lamp is used in the observing step. The use of an incoherent source replacing the laser in the observing step proved to be of interest because it reduces the speckle in the observed fringes.

© 1987 Optical Society of America

Range and accuracy of speckle displacement measurement in double-exposure speckle photography

Jin Seung Kim
J. Opt. Soc. Am. A 6(5) 675-681 (1989)

Experimental assessment of a low-cost aberration-free compact double aperture four-hololens imaging system: application to the enhancement of sensitivity and accuracy of in-plane displacement measurement

Arasad Ali Khan and Hira Lal Yadav
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Automated fringe measurement in speckle photography

Farhad Ansari and Gregory Ciurpita
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Measurement of time-varying displacement fields by multiple-exposure speckle photography

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Measurement of Vibrational Amplitude by Modulation of Projected Fringes

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