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Proceedings Paper

Real-time fringe analyzer and its applications to active optics
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Paper Abstract

A fringe analyzer has been developed which delivers phase distribution from an interference pattern having carrier fringes at the video rate. It is based on the generation of three phase- shifted moire fringe patterns through electronic multiplication with computer generated reference patterns having mutual phase shifts and subsequent phase calculation. After the principle and specifications of the analyzer are presented, applications to feedback control of a liquid crystal spatial phase modulator, measurements of large mirrors using synthetic aperture interferometry, and active phase shifting speckle interferometry are reported.

Paper Details

Date Published: 12 December 1994
PDF: 9 pages
Proc. SPIE 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements, (12 December 1994); doi: 10.1117/12.195917
Show Author Affiliations
Ichirou Yamaguchi, RIKEN--The Institute of Physical and Chemical Research/RIKEN (Japan)
Jun-ichi Kato, RIKEN--The Institute of Physical and Chemical Research/RIKEN (Japan)


Published in SPIE Proceedings Vol. 2340:
Interferometry '94: New Techniques and Analysis in Optical Measurements
Malgorzata Kujawinska; Krzysztof Patorski, Editor(s)

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