High resolution displacement detection by speckle pattern analysis : accuracy limits in linear displacement speckle metrology
نویسندگان
چکیده
منابع مشابه
High resolution displacement detection by speckle pattern analysis : accuracy limits in linear displacement speckle metrology
We propose a simple reflection measurement setup and a motion evaluation procedure based on a two dimensional recording of subsequent speckle images. The averaging of cross correlation functions is used to measure displacements. We demonstrate experimentally a 10 nm precision on a 50 μm measurement range limited by systematical errors. An image library is proposed to extend the measurement rang...
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A common problem in experimental mechanics is that when a sample is studied in, e.g. a tensile test machine, the sample is often simultaneously exposed to rigid body motions as small deformations occur. These two movements, the rigid body motion and the deformation, are often talked about as displacement fields. The sought deformation field is often in the micrometer range, while rigid body mot...
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ژورنال
عنوان ژورنال: Journal of the European Optical Society: Rapid Publications
سال: 2010
ISSN: 1990-2573
DOI: 10.2971/jeos.2010.10035s