两种排列方式光纤传像束的像质评价  

Average modulation transfer function of two kinds of fiber-optic image bundles

作　　者：王慧[1] 向阳[2] 禹秉熙[2] 

机构地区：[1]长春理工大学 [2]中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春130033

出　　处：《光电工程》2006年第2期69-72,共4页Opto-Electronic Engineering

基　　金：国家自然科学基金(60378015);中科院知识创新工程(C02L07Z)资助项目

摘　　要：根据调制传递函数对比度定义,推导了线列光纤传像束调制传递函数(MTF)的数理关系,建立了光纤直径有随机误差的线列光纤传像束MTF仿真模型,对MTF进行数值分析。通过考虑在光纤传像束中输入信号与光纤的位相匹配对MTF的影响,分析了V型槽排列和紧密排列两种不同方式的光纤传像束的平均MTF。结果显示,有随机误差的光纤束的平均MTF值分别分布于理想传像束平均MTF曲线附近,表明了光纤自身的误差对传像束的平均MTF影响不大;V型槽排列的线列光纤束的像质优于紧密排列方式的线列光纤束。With the definition of the contrast transfer function （CTF）, the Modulation Transfer Function （MTF） mathematics-theory relationship of line-array fiber-optics image bundles with fiber-optic diameter random error was established, and digital analysis for MTF was carried out. The MTFhas been carefully evaluated by considering the influence of phase match on the MTF between input pattern and fiber-optic image bundles. Taking into consideration accumulative error of fibers, the average MTF is analyzed on the V slot and the tightness array pattern about the fiber-optic image bundles. Simulation results show that the MTF values of fiber-optic image bundles with random error is near the MTF values of ideal image bundles, so the influence of the fiber-optic error on the MTF is little. The image quality of V slot array fiber-optic image bundles is better than that of tightness array pattern fiber-optic image bundles.

关 键 词：光纤传像束 调制传递函数 位相匹配 随机误差 像质评价 

分 类 号：O439[机械工程—光学工程]