Translator Disclaimer
24 October 2012 Vectorial shearing interferometer used in defocus detection
Author Affiliations +
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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Guillermo García-Torales, Jorge Sánchez Preciado, and Jorge Luis Flores "Vectorial shearing interferometer used in defocus detection", Proc. SPIE 8511, Infrared Remote Sensing and Instrumentation XX, 851116 (24 October 2012);


The Role Of Shear In Interferometry
Proceedings of SPIE (December 29 1981)
Features of the vectorial shearing interferometer
Proceedings of SPIE (October 05 2000)
Wide dynamic beam size range lateral-shear interferometer
Proceedings of SPIE (August 10 2008)

Back to Top