作　　者： ; ; ; ; ; ;

机构地区： 深圳大学光电工程学院

出　　处： 《中国激光》 2016年第9期171-178,共8页

摘　　要： 设计了一种大探测面积磁透镜分幅变像管。通过理论分析和模拟仿真的方法对单透镜和三透镜两种结构的分幅变像管在不同离轴位置的空间分辨率特性进行了研究,并通过实验进行验证。在仿真计算中,当成像缩小倍率为2…1时,单透镜结构仅能在10mm离轴半径内达到5lp/mm的空间分辨率,而三透镜结构能够在30mm离轴半径内达到5lp/mm的空间分辨率。在实验测试中,单透镜结构仅能在12mm离轴半径内达到5lp/mm的空间分辨率,而三透镜结构则能在27mm离轴半径内达到5lp/mm的空间分辨率。实验结果表明,采用三透镜结构设计的分幅变像管,其有效探测面积比单透镜结构大4倍以上。 A large work area framing image tube with magnetic lenses is designed. By theoretical analysis and analogsimulation, the characteristics of spatial resolution in different off-axis positions of framing image tube with singlelens and treble lenses are studied. Experiments are also conducted to verify the results. In the simulation, when theimaging demagnification is 21, the single lens structure can reach 5 lp/mm spatial resolution within 10 mm off-axisradius, while the treble lenses structure can reach 5 lp/mm spatial resolution within 30 mm off-axis radius. In theexperiments, the single lens structure can reach 5 lp/mm spatial resolution within 12 mm off-axis radius, while thesingle lens structure can reach 5 lp/mm spatial resolution within 27 mm off-axis radius. The results show that byusing the framing image tube of treble lenses structure design, its effective detection area is about 4 times as large asthat of the single lens structure.

关 键 词： 测量 分幅变像管 磁透镜 大探测面积 空间分辨率 微通道板

领　　域： [电子电信]