光学与光电技术, 2011, 9 (1): 82, 网络出版: 2011-05-18
液晶光谱成像技术研究进展
Development of LC-Based Spectral Imaging Technology
文字间用 号隔开空半格液晶光谱成像 可调滤光片 电控双折射 研究进展 LC-based spectral imaging tunable filter electrically controlled birefringence research progress
摘要
液晶光谱成像技术是基于液晶可调滤光片的新型光谱成像技术。利用向列相液晶材料的电控双折射效应,液晶可调滤光片可在工作谱段内进行连续光谱调谐,实现光谱成像系统的小型化、多用途、实时控制。获取高空间分辨率和高光谱分辨率的光谱图像,是今后航天航空遥感的一个重要发展方向。结合液晶光谱成像技术的国内外研究进展,分析了其目前存在的主要问题,并提出了可能的解决途径。展望了液晶光谱成像技术的发展和应用前景。
Abstract
LC-based spectral imaging is a novel spectral imaging technology using the liquid crystal tunable filter(LCTF), which is a miniaturized device based on the electrically controlled birefringence of nematic liquid crystal. Continuously tuning through a spectral coverage is realized using LCTF under low voltages. LCTF-based spectral imaging system is a multi-functional and real-time system with high spatial resolution and spectral resolution, which represents a new trend in the future of optical remote sensor on aerospace vehicles. Problems and prospects of this technology are analyzed according to the present state of the LC-based spectral imaging technology.
沈志学, 李剑峰, 张大勇, 龙燕, 刘海涛, 张翠娟, 黄立贤. 液晶光谱成像技术研究进展[J]. 光学与光电技术, 2011, 9(1): 82. SHEN Zhi-xue, LI Jian-feng, ZHANG Da-yong, LONG Yan, LIU Hai-tao, ZHANG Cui-juan, HUANG Li-xian. Development of LC-Based Spectral Imaging Technology[J]. OPTICS & OPTOELECTRONIC TECHNOLOGY, 2011, 9(1): 82.