负折射率材料单球面近轴成像奇特规律的研究  

Peculiar properties of paraxial imaging at single spherical surfaces made of negative refractive index materials

作　　者：谈苏庆[1] 高文琦[2] 

机构地区：[1]南京师范大学物理科学与技术学院,江苏南京210097 [2]南京大学物理系,江苏南京210093

出　　处：《大学物理》2007年第12期8-11,15,共5页College Physics

基　　金：江苏省高校自然科学基础研究项目(项目批准号:06KJB140057)

摘　　要：研究了负折射率(n′<0)材料单球面折射对近轴光线的成像规律.理论推导证实负折射率材料单球面近轴成像的所有公式与我们所熟悉的常规材料(n′>0)单球面的完全相同,但由于n′<0,它的成像规律完全不同于常规材料的.文中通过物距-像距曲线比较了两种材料的物-像关系,并对(n′<0,f′>0,f>0)情形下的物像位置、虚实正倒、缩放规律等进行阐述,给出了物像空间的对应图示.The imaging properties of single spherical surface made of negative refractive index （n＇〈 0） materials （NRIM） under the paraxial approximation are investigated. Theoretical derivations confirmed that the paraxial imaging at single spherical surface made of NRIM and conventional materials have the same expressions. However, the analyzed results, due to the refractive index n＇〈 O, indicate that the imaging characteristic of NRIM is completely different from that of conventional materials. It is easy to discuss the imaging properties,such as the location of object and image, the erected and the inverted, virtual and real properties of image, and the scaling rule, through the s＇-s curves. The comparison of s＇-s curves between different materials are given, also the graphs of the relationship between object and image in the whole space of n＇〈0,f＇〉0,f〉0 as well.

关 键 词：负折射率材料 单球面 成像特性 

分 类 号：O435.1[机械工程—光学工程]