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Proceedings Paper

Three-wavelength phase-shifting interferometry selectively extracting wavelength information from wavelength-multiplexed images with arbitrary symmetric phase shifts
Author(s): Tatsuki Tahara; Reo Otani; Kaito Omae; Yasuhiko Arai; Yasuhiro Takaki
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Paper Abstract

We propose three-wavelength phase-shifting interferometry selectively extracting wavelength information from wavelength-multiplexed images with arbitrary phase shifts. Wavelength information is multiplexed on the space and spatial frequency domains and is separated in the polar coordinate plane by utilizing the proposed phase-shifting interferometry. 0th-order diffraction waves and conjugate images are also removed from wavelength-multiplexed images when extracting wavelengths separately. As a result, a full spatial bandwidth of a monochromatic image sensor at each wavelength is available with a small number of images. Images required for three-wavelength three-dimensional imaging with a full spatial bandwidth of a monochromatic image sensor are decreased and speeding up of measurement is expected in comparison with a conventional technique. The validity of the proposed technique is numerically confirmed.

Paper Details

Date Published: 18 April 2017
PDF: 4 pages
Proc. SPIE 10251, Biomedical Imaging and Sensing Conference, 1025111 (18 April 2017); doi: 10.1117/12.2275149
Show Author Affiliations
Tatsuki Tahara, Kansai Univ. (Japan)
Japan Science and Technology Agency (Japan)
Reo Otani, SIGMAKOKI Co., Ltd. (Japan)
Kaito Omae, Kansai Univ. (Japan)
Yasuhiko Arai, Kansai Univ. (Japan)
Yasuhiro Takaki, Tokyo Univ. of Agriculture and Technology (Japan)


Published in SPIE Proceedings Vol. 10251:
Biomedical Imaging and Sensing Conference
Toyohiko Yatagai; Yoshihisa Aizu; Osamu Matoba; Yasuhiro Awatsuji, Editor(s)

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