Wave front reconstruction based on phase-shift fringe analysis

Xianyu Su; Wenchuan Zhao; Qican Zhang; Liqun Xiang

doi:10.1117/12.828692

20 May 2009 Wave front reconstruction based on phase-shift fringe analysis

Xianyu Su, Wenchuan Zhao, Qican Zhang, Liqun Xiang

Proceedings Volume 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 728320 (2009) https://doi.org/10.1117/12.828692
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

In this paper, a simple and practical method is proposed. The fringe patterns are generated on a computer display (for example, a LCD or TFT monitor) and the images refracted via the tested optical component are recorded by a CCD camera. The intensity patterns in these images are distorted because of the tested object. Using the well-known phase-shifting algorithms, the alterant phase caused by the tested object can be precisely obtained. And the aberration of each refracted ray with the reference sphere can be obtained by use of geometry principle. Then the wave front aberration is restored with Zernike polynomial fitting algorithm according to the relation between wave aberration and ray aberration. The technique allows the measurement for high aberrated wave fronts, owing to its ability to measure large ray slope changes, and the use of a computer display generation leads flexible adjustment of period and direction of patterns and accurate phase shift. Compared with other techniques, this technique is simpler, cheaper and more flexible.

Citation Download Citation

Xianyu Su, Wenchuan Zhao, Qican Zhang, and Liqun Xiang "Wave front reconstruction based on phase-shift fringe analysis", Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 728320 (20 May 2009); https://doi.org/10.1117/12.828692

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