具有任意设定图像转角的电磁聚焦成像  

Electrostatic and Magnetic Imaging with Any Specified Image Rotation

作　　者：金伟其[1] 周立伟[1] 倪国强[1] 

机构地区：[1]北京理工大学工程光学系

出　　处：《电子学报》1996年第3期10-14,共5页Acta Electronica Sinica

基　　金：国家自然科学基金;国家教委基金

摘　　要：本文研究了实现图像有任意设定像转角的电磁聚焦成像理论，进一步发展了作者先前的电磁聚焦成像理论，导出了在设定图像转角下轴上电场和磁场应满足的条件，按照本理论不仅可获得直立式，而且可获得任意设定图像转角（或者倒像式）的电磁聚焦成像系统。作为例子，给出了一种解析的轴上电场和磁场分布，可实现设定图像转角且放大率Ｍ＝１或者Ｍ≠１的电磁聚焦成像。A theory of electrostatic and magnetic imaging with any specified image rotation has been studied,and it develops our previous theory of electrostatic and magnetic imaging. The conditions of the axial electric potential and magnetic induction for realizing electrostatic and magnetic imaging with any required image rotation have been given,and the results show that the given theory can realize not only an erect positive image but also a specified rotated image(or an inverted image). As an example,an analytical distribution of axial electric potential and magnetic induction has been given for obtaining the electrostatic and magnetic imaging with any specified image rotated angle and magnification M=1 or M≠1.

关 键 词：电子光学 电子透镜 电子束聚焦 电磁聚焦成像 

分 类 号：O441[理学—电磁学] TN201[理学—物理]