| FZP扫描全息术用于高散射介质中吸收体成像 |
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| 引用本文： | 孙萍,谢敬辉,高燕,张军莉,唐晓英,刘效泽. FZP扫描全息术用于高散射介质中吸收体成像[J]. 北京理工大学学报, 2003, 23(4): 449-452 |
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| 作者姓名： | 孙萍 谢敬辉 高燕 张军莉 唐晓英 刘效泽 |
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| 作者单位： | 北京理工大学,信息科学技术学院光电工程系,北京,100081;北京师范大学物理系,北京,100875;北京理工大学,信息科学技术学院光电工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;重庆明光仪器厂,重庆,400060 |
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| 摘 要： | 设计以菲涅耳波带板作为编码孔径的近红外扫描全息成像系统,并对该系统的点扩散函数进行了理论计算．结果表明：系统的点扩散函数接近理想的δ函数;实际测试了系统的点扩散函数,分析了实验结果与理论计算值存在差异的原因;用该系统对浓度为1％、深度为1．8cm的intralipid脂肪乳剂中嵌埋直径分别为1．5mm,1．0mm和0．4mm的金属丝做成的圆环进行了成像实验．实验结果表明：可较清晰地分辨直径1.5mm和1.0mm金属丝做成的圆环,对直径0．4mm的金属丝做成的圆环也可识别．该系统用于高散射介质中吸收体成像具有较高的横向分辨力。
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| 关 键 词： | FZP扫描全息术 高散射介质 吸收体成像 系统点扩散函数 |
| 文章编号： | 1001-0645(2003)04-0449-04 |
| 收稿时间： | 2003-03-19 |
| 修稿时间： | 2003-03-19 |
Imaging of Absorbers Embedded in Highly Scattering Media Using Fresnel Zone Plate Scanning Holography |
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| SUN Ping,XIE Jing hui,GAO Yan,ZHANG Jun li,TANG Xiao ying and LIU Xiao ze. Imaging of Absorbers Embedded in Highly Scattering Media Using Fresnel Zone Plate Scanning Holography[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2003, 23(4): 449-452 |
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| Authors: | SUN Ping XIE Jing hui GAO Yan ZHANG Jun li TANG Xiao ying LIU Xiao ze |
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| Affiliation: | Department of Optical Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China; Department of Physics, Beijing Normal University, Beijing 100875, China;Department of Optical Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Chongqing Mingguang Instrument Factory, Chongqing 400060, China |
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| Abstract: | A near infrared imaging system of Fresnel zone plate scanning holography is proposed and the system point spread function calculated. The calculation shows that the system point spread function is quite close to the Dirac delta function. Differences between the experimental results and the theoretical calculation of the system point spread function are analyzed. Experiments in which three metal rings with wire diameter of 1 5 mm, 1 0 mm and 0 4 mm respectively, embedded in a 1% intralipid solution are imaged using the system demonstrated that the reconstruction of the two metal rings with wire diameters of 1 5 mm and 1 0 mm are clear and the reconstructions of the metal ring with wire diameter of 0 4 mm can also be distinguished from the noise. The system is thus shown by experiments to be workable in imaging absorbers embedded in a highly scattering turbid media. |
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| Keywords: | Fresnel zone plate scanning holography highly scattering media imaging of absorber Embedded system point spread function |
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