示波器的电聚焦与聚焦调节原理理论分析

Theoretic Analysis on the Principle of Electricity Focusing and Focusing Adjusting of the Oscillograph

根据单光阑静电透镜的会聚原理,应用静电场的高斯定理,求解出在近轴条件下单光阑薄静电透镜的焦距表示式,对示波器的电聚焦和聚焦调节原理作出理论上的分析.

According to the flock together principle of the single diaphragm, applying Gauss-theorem of the static electric field, the expressions of the single diaphragm electrostatic lens＇s focus is educed in the near axis condition, the principles of electric focusing and focusing adjusting of the Oscillograph are analysed.