Multilaser digital speckle pattern interferometry system

Details Multilaser digital speckle pattern interferometry system Multilaser digital speckle pattern interferometry system

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5633..135j&link_type=abstract

Advanced Materials and Devices for Sensing and Imaging II. Edited by Wang, Anbo; Zhang, Yimo; Ishii, Yukihiro. Proceedings of

Computer Science

Scientific paper

A novel digital speckle pattern interferometry system including multi lower power He-Ne lasers to measure large object is presented in this paper. Multi lower power He-Ne lasers and optical switches are set in it. Through the control of computer, the different laser can illuminate the different area of large object at different time. Then the phase maps corresponding to different area are jointed together to obtain the measurement result of entire object by using proper image mosaic algorithm. Using this method, the contradiction between laser power and size of object to be measured is overcome. In this system, the high coherence of He-Ne laser and the power of multi lasers are comprehensively used, which makes it be able to measure the large object in practical engineering. At the same time, the speckle pattern fringes with high quality can be obtained.

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