A non-continuous wavelength scanning strategy for electrically tunable liquid-crystal hyperspectral imaging array

Kan Liu; Dehua Li; Xinyu Zhang; Hui Li; Tianxu Zhang

doi:10.1117/12.832296

30 October 2009 A non-continuous wavelength scanning strategy for electrically tunable liquid-crystal hyperspectral imaging array

Kan Liu, Dehua Li, Xinyu Zhang, Hui Li, Tianxu Zhang

Author Affiliations +

Proceedings Volume 7494, MIPPR 2009: Multispectral Image Acquisition and Processing; 74940F (2009) https://doi.org/10.1117/12.832296
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China

Abstract

Traditional mechanically tunable imaging spectrometry, including those based on MEMS technology, can only obtain continuous spectral image data in a fixed spectral order, which was restricted by the moving mechanism of the mechanical device. But spectrum absorption peakof materials is not continuous, especially in hyperspectral scale. To overcome such shortages, a smart spectral imaging detection method based on the integration of electrically tunable liquid-crystal (LC) Fabry-Perot (FP) microstructure array and a non-continuous wavelength choosing strategy to operation the device are proposed. With a tunable LC-FP array composed by many working units arranging in two dimensions, the device can image in hundreds of spectral bands simultaneity within milliseconds in a calibrated system, and making correct detection for certain objects in one shot.

Citation Download Citation

Kan Liu, Dehua Li, Xinyu Zhang, Hui Li, and Tianxu Zhang "A non-continuous wavelength scanning strategy for electrically tunable liquid-crystal hyperspectral imaging array", Proc. SPIE 7494, MIPPR 2009: Multispectral Image Acquisition and Processing, 74940F (30 October 2009); https://doi.org/10.1117/12.832296

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KEYWORDS

Liquid crystals

Fabry–Perot interferometers

Imaging spectroscopy

Hyperspectral imaging

Molecules

Dielectrics

Microelectromechanical systems

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