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为适应高速摄影的需要,作者进行了高速摄影中的象管的研制工作,设计了多种电子光学系统。对分幅而言,设计目标主要是缩短单幅曝光时间,提高分幅速率,改善空间分辨率和增多画幅数;对扫描而言,设计目标主要是提高时间分辨率,减小扫描图象弯曲,扩大动态范围和提高对目标的捕获几率。作者设计和研制了几种不同的高速摄影通用变象管。其中305—1扫描管,采用长磁聚焦静电偏转系统,其时间分辨为20毫微秒;305—2通用管采用了静电聚焦系统和花样偏转器,理论分幅最小曝光时间为6毫微秒,扫描时间分辨率为50微微秒。另一种微微秒扫描变象管采用球面阴极球面网的静电聚焦系统,理论时间分辨率为1.2微微秒,消除了扫描图象弯曲现象。
In order to meet the needs of high-speed photography, the author carried out the development of image tube in high-speed photography and designed a variety of electronic optical systems. For framing, the main design goals are to shorten the single exposure time, increase the framing rate, improve the spatial resolution and increase the number of frames; for scanning, the design goal is to improve the time resolution, reduce the scanning image bending , Expand the dynamic range and improve the chances of capturing the target. The author designed and developed several different high-speed photographic universal tube. 305-1 scanning tube, using long magnetic focusing electrostatic deflection system, the time resolution of 20 nanoseconds; 305-2 common tube electrostatic focusing system and pattern deflector, the theoretical fractional minimum exposure time of 6 nanoseconds , Scanning time resolution of 50 picoseconds. Another pico-second scanning tube with spherical cathode spherical electrostatic focusing system, the theoretical time resolution of 1.2 picoseconds, eliminating the phenomenon of scanning the image bending.