一种高性能电子枪的设计

通过增大聚焦极口径以提高电子束的利用率,保证阴极发射的电子全部打到荧光屏上,以实现提高亮度的目的.同时在聚焦极与阳极之间增加一个自由电位电极,该电极电位受聚焦极与阳极静电电压感应,形成界于聚焦极与阳极间的电压,该电压在电子枪内形成了另一个聚焦极,从而使从阴极发射出的电子在经过聚焦极聚焦后又进行了一次会聚,因而进一步提高了电子枪的分辨率.

Design of a kind of high-powered electron gun

In order to improve the luminance, the caliber of the focus electrode is increase to improve the utilization factor of the electron beam and ensure electron to bombard on the fluorescence screen entirely. At the same time, a free potentiodynamic electrode is add between the focus electrode and the anode. The voltage of this electrode is influenced by the static voltage of the focus electrode and the anode. It will form the voltage between the focus electrode and the anode and produce another focus electrode in the electron gun, causing the electron to converge again after the focusing of the original focus electrode. Therefore, this technique can improve the resolution of the electron gun.