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Proceedings Paper

Vectorial shearing interferometer used in defocus detection
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Paper Abstract

Bringing the image of a static object to the focus of a system is a relative easy task. However, when the object is being moved, the system has to be adapting some parameters according to the object displacement. For small movements, some detection systems are not able to distinguish the new position of the object. The Vectorial Shearing interferometer (VSI) is able to detect small changes in the position through the measurement of the defocus associated with this displacement. We present a method to detect and asses defocus of a wavefront by using a VSI. We present experimental results.

Paper Details

Date Published: 24 October 2012
PDF: 8 pages
Proc. SPIE 8511, Infrared Remote Sensing and Instrumentation XX, 851116 (24 October 2012); doi: 10.1117/12.944954
Show Author Affiliations
Guillermo García-Torales, Univ. de Guadalajara (Mexico)
Jorge Sánchez Preciado, Univ. de Guadalajara (Mexico)
Jorge Luis Flores, Univ. de Guadalajara (Mexico)


Published in SPIE Proceedings Vol. 8511:
Infrared Remote Sensing and Instrumentation XX
Marija Strojnik; Gonzalo Paez, Editor(s)

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