微球动态涂敷状态实时监测光学系统的设计  

Design of optical system for monitoring coating status of micro-sphere at real-time

作　　者：郑娟娟[1] 沈剑峰[2] 陈直[1] 施柏煊[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,杭州310027 [2]浙江大学城市学院,杭洲310027

出　　处：《强激光与粒子束》2006年第4期587-590,共4页High Power Laser and Particle Beams

基　　金：国家863计划项目资助课题

摘　　要：介绍了一种可用于实时监测直径0．2～1．0mm激光核聚变靶球涂敷状态的光学系统的设计。系统采用环形LED照明系统以适合特殊的照明要求，用Petzval型物镜使500mm处的微球清晰成像于CCD像面上，CCD输出的图像电信号经图像采集卡转换成数字信号，最后该数字信号由计算机进行处理，实现了系统对靶球膜层涂敷作业的自动监控．大大提高了涂敷效率。所设计的系统轴上点最大弥散斑直径为12．6μm．轴外最大弥散斑直径为15．8μm，整个视场的像质比较均匀．分辨率较高，对于波长522nm的光线，场曲和畸变分别小于15μ和0．012％，像质优良。An optical system was designed. It can be applied in monitoring the real-time bouncing status of ICF target microsphere with 0.2-1.0 mm in diameter. A ring Light Emitting Diode （LED） for specific illumination was designed, and through the Petzval objective system, the micro-sphere was imaged onto the CCD with details resolution. Video detection system by personal computer captured and disposed every video image. Monitoring the real-time status of micro-sphere was realized and the coating efficiency improved greatly. The optical system had very good image quality, with the maximum spot diameter on-axis and off-axis of 12.6μm and 15.8μm, respectively. The fields were uniform and had high resolution. Particularly, the field curvature less than 15 μm and the distortion less than 0.012% for the wavelength of 522 nm.

关 键 词：ICF靶微球 光学系统 环形LED Petzval型物镜 实时监测 传递函数 

分 类 号：TN247[电子电信—物理电子学]