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Proceedings Paper

Liquid crystal tunable polarization filters for polarization imaging
Author(s): Dong-Feng Gu; Bruce Winker; Bing Wen; John Mansell; Karen Zachery; Donald Taber; Tallis Chang; Sung Choi; Jian Ma; Xiaomin Wang; Keith Sage
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Paper Abstract

We report a new familiy of polarimetric imaging cameras based on tunable liquid crystal components. Our camera designs use a dual frequency liquid crystal tunable filter that rotates the polarization of incoming light, in front of a single linear polarizer. The unique features of this approach include fast switching speed, high transmission throughput, no mechanical moving parts, broad bandwidth, high contrast ratio, wide viewing angle, and compact/monolithic architecture. This paper discusses these tunable liquid crystal polarimetric imaging camera architectures (time division, amplitude division), the benefits of our design, the analysis of laboratory and field data, and the applicability of polarization signatures in imaging.

Paper Details

Date Published: 27 August 2008
PDF: 14 pages
Proc. SPIE 7050, Liquid Crystals XII, 70500I (27 August 2008); doi: 10.1117/12.793158
Show Author Affiliations
Dong-Feng Gu, Teledyne Scientific & Imaging, LLC (United States)
Bruce Winker, Teledyne Scientific & Imaging, LLC (United States)
Bing Wen, Teledyne Scientific & Imaging, LLC (United States)
John Mansell, Teledyne Scientific & Imaging, LLC (United States)
Karen Zachery, Teledyne Scientific & Imaging, LLC (United States)
Donald Taber, Teledyne Scientific & Imaging, LLC (United States)
Tallis Chang, Teledyne Scientific & Imaging, LLC (United States)
Sung Choi, Teledyne Scientific & Imaging, LLC (United States)
Jian Ma, Teledyne Scientific & Imaging, LLC (United States)
Xiaomin Wang, Teledyne Scientific & Imaging, LLC (United States)
Keith Sage, Teledyne Scientific & Imaging, LLC (United States)


Published in SPIE Proceedings Vol. 7050:
Liquid Crystals XII
Iam Choon Khoo, Editor(s)

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