Design of hyper-spectral and full-polarization imager based on AOTF and LCVR

Feifei Li; Yingyu Xu; Yanhua Ma

doi:10.1117/12.2073012

18 November 2014 Design of hyper-spectral and full-polarization imager based on AOTF and LCVR

Feifei Li, Yingyu Xu, Yanhua Ma

Proceedings Volume 9298, International Symposium on Optoelectronic Technology and Application 2014: Imaging Spectroscopy; and Telescopes and Large Optics; 92980U (2014) https://doi.org/10.1117/12.2073012
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China

Abstract

With the development of spectral imaging technology and polarization imaging technology, capturing the spectral profile and polarization signatures simultaneously will provide a wealth of evidence which helps to recognize the objects. Thus it has become a new trend in the area of remote sensing technology. In this paper, the existing polarization spectral imaging technologies are introduced and compared a new designing scheme to realize the miniaturized hyper-spectral and full-polarization imager are proposed, which is based on the combination of Acousto-Optic Tunable Filter (AOTF) and Liquid Crystal Variable Retarder (LCVR). The designing scheme is mainly composed of three modules: the spectral splitting module based on AOTF, the polarization control module based on LCVR and the image acquisition module based on Charge Coupled Device (CCD). The use of AOTF assists in achieving a hyper-spectral resolution higher than 5nm, as well as the abundant spectral information. While the LCVR enables us to gain multiple sets of polarization images of the target, after that, the polarization state of the target can be extracted according to Stokes vector and Mueller matrix. This designing scheme ensures a wide spectral range from 400nm to 2400nm by means of electronic tuning, and also achieves the hyper-spectral and full-polarization images of the target in rapid succession without mechanical moving parts. Besides, the development, testing, calibration and test scheme of the system are also introduced in the rest of the paper.

Citation Download Citation

Feifei Li, Yingyu Xu, and Yanhua Ma "Design of hyper-spectral and full-polarization imager based on AOTF and LCVR", Proc. SPIE 9298, International Symposium on Optoelectronic Technology and Application 2014: Imaging Spectroscopy; and Telescopes and Large Optics, 92980U (18 November 2014); https://doi.org/10.1117/12.2073012

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