高分辨率SS型摄像管伪信号的成因及防止

Contributing Factor and Prevention on Pseudo-signal of High Resolution SS type Camera Tubes with Pattern yokes

本文研究了高分辨率SS型摄像管伪信号产生的原因。认为由靶返回的电子束轰击栅极G_2产生反射电子束,再轰击靶面形成伪信号。消除伪信号可在栅极G_2上设计偏转反射束R_2的电极板,也可在栅极G_2前增加反射R_2的电极板。

Contributing factor on pseudo-signal of high resolution SS type camera tubes with pattern Yokes is studied in this paper.It is considered that it formed the pseudo-signal that electron beam coming from target bombard grid G_2, which produced reflecting electron beam. For preventing pseudo-signal, reflecting electron beam electrode plate can be designed at the top of grid G_2 and/or deflecting electron beam electrode plata can be increased at front part of the grid G_2.