发明名称 |
CRT with compensating focussing system - uses variable-power lens after accelerating electrode to keep focus constant despite beam energy changes (CS 30.4.79) |
摘要 |
<p>The c.r.t. has its focussing system provided with a variable lens(11) between the accelerating electrode(6) and the second focussing electrode(8) in order to ensure that the electron beam's focussing at the screen remains constant. This lens has a variable power to keep focussing constant despite changes in the beam's energy. The focussing system's two electrodes are connected together by a resistive material to generate a distributed electric field.</p> |
申请公布号 |
DE2812172(A1) |
申请公布日期 |
1979.10.25 |
申请号 |
DE19782812172 |
申请日期 |
1978.03.20 |
申请人 |
RYBALKO,SERGEI ALEKSANDROVITSCH |
发明人 |
ALEKSANDROVITSCH RYBALKO,SERGEI |
分类号 |
H01J31/20;(IPC1-7):01J29/62;01J31/00 |
主分类号 |
H01J31/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|