可见光液晶光谱成像系统研究  

Research on LC-Based Spectral Imaging System for Visible Band

作　　者：沈志学[1] 李剑峰[1] 张大勇[1] 吴军[2] 龙燕[1] 黄立贤[1] 刘海涛[1] 骆永全[1] 罗飞[1] 张翠娟[1] 杨俊杰[2] 

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900 [2]西南医院烧伤研究所,重庆400038

出　　处：《光谱学与光谱分析》2011年第10期2672-2675,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(81027004)资助

摘　　要：利用向列相液晶材料的电控双折射效应，研制了刚于可见光波段光谱调谐的大口径液晶町调滤光片，透过光谱测试表明，该滤光片在可见光波段（420－700nm）以20nm光谱分辨率可实现连续调谐和任意波长选择。利用该滤光片搭建了一种小型光谱成像系统，并在实验室内对若于样品进行了测试，结果表明，该系统可同时实现高图像分辨率和高光谱分辨率光谱成像，具备高、超光谱分辨率光谱成像的应用潜力，在化物医学、环境保护和资源探测等领域具有较好的应用前景。LC-based tunable filter with large aperture has been developed utilizing the effect of electric controlled birefringence. Spectral test indicated that this filter can operate in the visible band with an average 20 nm FWHM. A small scale spectral imaging system was established based on this tunable filter. Spectral imaging experiments on a certain number of samples show that this system can be tuned continuously with random-access selection of any wavelength, and has a higher level of resolving power in respect of both imaging and spectral tuning in the visible band, which has a brilliant application potentiality in biology, iatrology, environmental protection, resource detection through hyper-spectral imaging or ultra-spectral imaging.

关 键 词：液晶可调滤光片 电控双折射 工作谱段 光谱分辨率 光谱成像系统 

分 类 号：O433.4[机械工程—光学工程]