无衍射光束提高成像系统分辨率  

Non-diffraction Beam Improves the Resolution Ratio of Imaging System

作　　者：陈姿言 胡威旺 吴逢铁[1] 朱清智[1] 何艳林[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建省光传输与变换重点实验室,福建厦门361021

出　　处：《光子学报》2016年第5期116-120,共5页Acta Photonica Sinica

基　　金：国家自然科学基金(No.61178015);福建省科技创新平台计划项目(No.2012H2002);泉州市科技重点项目(No.2014Z127)资助~~

摘　　要：设计了一种在非相干光源下利用轴棱锥产生的无衍射光束成像系统.基于衍射积分理论与点扩散函数推导出成像系统分辨率的表达式,利用光学软件对无衍射光束成像系统的初始结构模型进行仿真,并以蓝光LED作为光源,将条纹状物体、透镜组以及轴棱锥等光学元件组合为成像系统进行实验.结果表明:实验结果与理论分析相符,即非相干光源无衍射Bessel光束成像系统利用无衍射光束的特性能够提高成像分辨率.An incoherent source non-diffraction beam imaging system was designed under incoherentsource by using the axicon. The formula of the resolution of the imaging system was derived based on thethe diffraction integral theory and the point spread function of the system. The optical software was usedto simulate the initial structure model of the non-diffraction beam imaging system. With a blue light LEDas the light source, combining with the optical components such as the striped object, lens and axicon,the experimental verification was conducted. According to the experimental results, the incoherent sourcenon-diffraction Bessel beam imaging system can enhance the image resolution by applying the non-diffraction beam properties, which is consistent with theoretical derivation.

关 键 词：无衍射Bessel光束 轴棱锥 非相干光源 成像系统 分辨率 

分 类 号：O435.1[机械工程—光学工程]