提出一种能够高速选通工作的三代微光像增强摄像系统（ICCD）。采用三代像增强器，设计了光阴极选通控制电路，使ICCD系统能够高速选通成像；通过分析、比较，设计了双高斯复杂化结构的中继镜头耦合方案，获得了高透过率、高调制传递函数（MTF）的图像耦合性能。采用数字CCD、数字图像采集卡及其集成的图像处理硬件，编写了相关处理软件，使ICCD系统的图像能够快速呈现。结果表明:设计的三代选通ICCD具有3.3 ns选通门宽，空间分辨力达到600 TVL。
Abstract
A design of a 3rd generation image intensifying charged-coupled device camera ( ICCD) was proposed that could operate under high-speed gating. A gated control circuit was designed which was used for the photocathode of a 3rd generation image tube, so that the ICCD could image effectively under a highspeed gated state. After analysis and comparison, a relay lens was designed which had a Bi-Gauss complication optic configuration. The high transmissivity and high modulated transfer function ( MTF ) were achieved on image coupling. A digital CCD and a digital frame capture circuit with an embedded image process module were used. The correlative software about the image process was accomplished , so that the image of ICCD was presented fast. As a result of the design, the 3rd gated ICCD can operate with a 3.3 ns gated width and its spatial resolution is 600 TVL.
关键词
三代像增强器 /
数字成像 /
选通成像
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Key words
3rd generation image intensifier /
gated imaging /
digital imaging
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AI Ke-cong.Development and prospect of low-light-leve
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