Discussion on spatial spectral characteristic of Fourier transform method for interference fringe analysis

Xiaochen Meng; Qun Hao; Qiudong Zhu; Yao Hu

doi:10.1117/12.907148

30 November 2011 Discussion on spatial spectral characteristic of Fourier transform method for interference fringe analysis

Xiaochen Meng, Qun Hao, Qiudong Zhu, Yao Hu

Author Affiliations +

Proceedings Volume 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 82012D (2011) https://doi.org/10.1117/12.907148
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

Because of the global characteristic of the Fourier transform method for fringe pattern analysis, it has been extensively developed and widely used in optical metrology. Many other works were published afterward; however, the spatial spectrum characteristic of the Fourier transform method has not been fully and systematically investigated. The spatial spectrum characteristic and its relationship with factors such as the quantization of grey levels, random noise, and spatial carrier frequency are discussed. The results indicate that, the maximum bandwidth can be measured by the Fourier transform method is close to Nyquist sampling theorem. That provides a theoretical quantitative basis for the study of extending the measurement range of the Fourier transform method, also builds the relationship between the spatial frequency can be measured and the resolution of interferogram detector.

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Xiaochen Meng, Qun Hao, Qiudong Zhu, and Yao Hu "Discussion on spatial spectral characteristic of Fourier transform method for interference fringe analysis", Proc. SPIE 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 82012D (30 November 2011); https://doi.org/10.1117/12.907148

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