一、调焦型象管在级联、串联管中的实用价值静电聚焦型象管的电子光学结构一旦确定,则象管内部的电场分布也就确定了。经过电子计算机的运算,就能找出象管的电子光学象面——理想象面(如图1所示)。 First, the focus of the tube in the cascade, tandem tube of practical value Electrostatic focusing tube electret optical structure once identified, the tube as the internal electric field distribution will be determined. After the operation of the computer, you can find the elephant electron tube like the optical surface - the ideal image plane (as shown in Figure 1).