Real-time fringe analyzer and its applications to active optics

Ichirou Yamaguchi; Jun-ichi Kato

doi:10.1117/12.195917

12 December 1994 Real-time fringe analyzer and its applications to active optics

Ichirou Yamaguchi, Jun-ichi Kato

Proceedings Volume 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements; (1994) https://doi.org/10.1117/12.195917
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

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.

Citation Download Citation

Ichirou Yamaguchi and Jun-ichi Kato "Real-time fringe analyzer and its applications to active optics", Proc. SPIE 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements, (12 December 1994); https://doi.org/10.1117/12.195917

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