
Proceedings Paper
Research on imaging spectrometer using LC-based tunable filterFormat | Member Price | Non-Member Price |
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Paper Abstract
A liquid crystal tunable filter (LCTF) with large aperture is developed using PDLC liquid crystal. A small scale imaging
spectrometer is established based on this tunable filter. This spectrometer can continuously tuning, or random-access
selection of any wavelength in the visible and near infrared (VNIR) band synchronized with the imaging processes.
Notable characteristics of this spectrometer include the high flexibility control of its operating channels, the image cubes
with high spatial resolution and spectral resolution and the strong ability of acclimation to environmental temperature.
The image spatial resolution of each tuning channel is almost near the one of the same camera without the LCTF. The
spectral resolution is about 20 nm at 550 nm. This spectrometer works normally under 0-50°C with a maximum power
consumption of 10 Watts (with exclusion of the storage module). Due to the optimization of the electrode structure and
the driving mode of the Liquid Crystal cell, the switch time between adjacent selected channels can be reduced to 20 ms
or even shorter. Spectral imaging experiments in laboratory are accomplished to verify the performance of this
spectrometer, which indicate that this compact imaging spectrometer works reliably, and functionally. Possible
applications of this imaging spectrometer include medical science, protection of historical relics, criminal investigation,
disaster monitoring and mineral detection by remote sensing.
Paper Details
Date Published: 15 October 2012
PDF: 6 pages
Proc. SPIE 8515, Imaging Spectrometry XVII, 85150H (15 October 2012); doi: 10.1117/12.928563
Published in SPIE Proceedings Vol. 8515:
Imaging Spectrometry XVII
Sylvia S. Shen; Paul E. Lewis, Editor(s)
PDF: 6 pages
Proc. SPIE 8515, Imaging Spectrometry XVII, 85150H (15 October 2012); doi: 10.1117/12.928563
Show Author Affiliations
Zhixue Shen, Institute of Fluid Physics (China)
Jianfeng Li, Institute of Fluid Physics (China)
Lixian Huang, Institute of Fluid Physics (China)
Fei Luo, Institute of Fluid Physics (China)
Jianfeng Li, Institute of Fluid Physics (China)
Lixian Huang, Institute of Fluid Physics (China)
Fei Luo, Institute of Fluid Physics (China)
Yongquan Luo, Institute of Fluid Physics (China)
Dayong Zhang, Institute of Fluid Physics (China)
Yan Long, Institute of Fluid Physics (China)
Dayong Zhang, Institute of Fluid Physics (China)
Yan Long, Institute of Fluid Physics (China)
Published in SPIE Proceedings Vol. 8515:
Imaging Spectrometry XVII
Sylvia S. Shen; Paul E. Lewis, Editor(s)
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