A closer look at dynamic speckles and the use of their fine-structure for object measurements

Publication: Research - peer-reviewConference article – Annual report year: 2010

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The possibility to “dress up” the speckles and thereby providing them with a fine structure will be discussed. As these speckles arise from scattering off solid targets, the dynamics of the speckles and their inherent fine structure might vary, providing information on different aspects of the surface displacement. This is achieved by illuminating the object with structured light, and observing the speckle field as it passes an optical system. In this way, simultaneous measurement of displacement (e.g. 2-D) and rotation can be performed. The application of this concept with a system based on spatial filtering velocimetry and ordinary speckle correlation will be discussed.
Original languageEnglish
JournalProceedings of SPIE, the International Society for Optical Engineering
Publication date2010
Volume7387
Pages73870W
ISSN0277-786X
DOIs
StatePublished

Conference

ConferenceSpeckle : Optical Metrology
CityFlorianapolis, Brazil
Period01/01/10 → …
CitationsWeb of Science® Times Cited: 0

Keywords

  • Speckled speckles, Velocity measurement, Speckle dynamics
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