激光与光电子学进展, 2015, 52 (7): 073007, 网络出版: 2015-06-26
选择式成像光谱探测技术及系统设计
Selectable Imaging Spectrum Detection and System Design
光谱学 选择式成像光谱 光谱探测 系统设计 光谱特性 空间分辨率 spectroscopy selectable imaging spectrum spectrum detection system design spectral characteristic spatial resolution
摘要
提出选择式成像光谱的概念,即通过对待测对象所成图像进行整体观察来选择其中任意感兴趣的区域(ROI),同时探测所选区域的光谱信息,而不是像传统成像光谱技术对所有像元光谱的被动测量。在此基础上设计搭建基于分束立方体的选择式成像光谱探测系统,用于探测直径为192 pixel,位于图像中心的圆形区域的光谱信息。对其性能测试结果表明:该系统的光谱范围为380~850 nm,光谱分辨率为1.5 nm,镜头焦距为70~300 mm,最高空间分辨率为2.4 mm,室外自然条件下与原始光谱的相关系数达0.992 以上。该系统结构简单,具有非接触、远距离、实时探测的优点,为光谱探测提供了一种新颖且有效的方法,具有较高的应用潜力。
Abstract
The concept of selectable imaging spectrum is proposed. It is an selectable imaging spectroscopy detection technology, namely, detecting the spectrum of the region of interest (ROI) selected through the whole observation of images, rather than the traditional imaging spectroscopy technology which passively measures all the pixels spectrum. Then an selectable imaging spectrometer based on beam- splitter- cube is designed to detect the spectrum information of 192 pixel diameter and located in the circular center area of the image. The performance test result shows that the spectral range of this system is 380~850 nm, the spectral resolution is 1.5 nm , lens focal length is 70~300 mm and the highest spatial resolution reaches 2.4 mm. Under natural outdoor conditions, correlation coefficient to the original spectrum is over 0.992. The proposed system with a high potential for application supplies a novel and effective method for spectral detection, it has the advantages of simple structure, non-contact, long distance and real-time detecting capability.
陈健沛, 谢立恒, 马鸿键, 朱炜湛, 蔡志岗. 选择式成像光谱探测技术及系统设计[J]. 激光与光电子学进展, 2015, 52(7): 073007. Chen Jianpei, Xie Liheng, Ma Hongjian, Zhu Weizhan, Cai Zhigang. Selectable Imaging Spectrum Detection and System Design[J]. Laser & Optoelectronics Progress, 2015, 52(7): 073007.