Linear displacement measurement with a grating and speckle pattern illumination
Applied Optics, Vol. 45, Issue 20, pp. 4821-4825 (2006)
http://dx.doi.org/10.1364/AO.45.004821
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Abstract
We present a study of the variations of a speckle pattern passing through a grating that can be displaced. This study is described theoretically by a simple model based on the scalar diffraction theory in the Fresnel zone. The intensity correlation of the modified speckle as a function of the grating displacement is obtained and compared with experimental results. The possibilities of metrological applications in optical encoders are suggested.
© 2006 Optical Society of America
OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(050.1950) Diffraction and gratings : Diffraction gratings
(120.3940) Instrumentation, measurement, and metrology : Metrology
History
Original Manuscript: October 6, 2005
Revised Manuscript: December 26, 2005
Manuscript Accepted: February 23, 2006
Citation
Fernando Perez-Quintián, Ariel Lutenberg, and María A. Rebollo, "Linear displacement measurement with a grating and speckle pattern illumination," Appl. Opt. 45, 4821-4825 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-20-4821
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