对近年来大屏幕彩色显像管电子枪专有技术进行了讨论，系统分析了电子束形成区、主透镜、会聚透镜系统及动态聚焦方式等。

In this paper, the specialized techniques of electron gun for large screen CPTs are discussed. The beam forming region, main lens, convergence lens system and dynamic focusing method are analyzed.

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为适应该项研究的需要，设计了会聚透镜与光纤耦合器的距离可以精确调节的耦合系统。

In this paper we report a laser fiber couple system, by which the output power from the fiber tip can be adjusted according to the requirement of the actual investigation.

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由数个照明单元加上会聚透镜则构成一个基本的照明系统。

Several such lighting units make a basic lighting system of projector.

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