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本文介绍了通过设计最佳化的试验而得到利用后加速高压场渗透到偏转场以矫正示波管中由于采用偏转后加速系统而引起显示图形畸变的方法。采用平面栅网作扫描放大器,其放大倍数在水平方向达1.52倍,垂直方向可达1.73倍。因电子的偏转角大小不同,使进入栅网处的高度和斜率亦不相同。当偏转角较大时,在高压场中的轨迹已不是近轴轨迹,后加速场存在着象差,必然引起图形畸变。本文通过实验验证了后加速石墨螺旋线长度、栅网在高
In this paper, we introduce a method to correct the display pattern distortion caused by the post-deflection acceleration system in the oscilloscope by using the optimized design test to accelerate the penetration of the high-pressure field into the deflection field. The use of planar grid as a scanning amplifier, the magnification of 1.52 times in the horizontal direction, the vertical direction of up to 1.73 times. Due to the different sizes of the electron deflection angle, the height and slope of entering the grid are also different. When the deflection angle is large, the trajectory in the high-pressure field is not the paraxial trajectory, and there is an aberration in the post-acceleration field, which inevitably causes the image distortion. In this paper, the length of post-accelerated graphite spiral is verified by experiments, and the grid is high