发明名称 |
Cathode ray tube having low voltage focus and dynamic correction |
摘要 |
A cathode ray tube comprises two electron lens means in combination to crossover the electron beam at a second crossover between the two electron lens means with one of the two lens means having a variable voltage applied thereto to dynamically control the location of the beam crossover in order to focus the beam onto a display screen at any location away from the screen center.
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申请公布号 |
US4277722(A) |
申请公布日期 |
1981.07.07 |
申请号 |
US19790038606 |
申请日期 |
1979.05.14 |
申请人 |
TEKTRONIX, INC. |
发明人 |
HAWKEN, KENNETH W.;JANKO, BOZIDAR |
分类号 |
H01J29/48;H01J29/58;H01J29/62;H01J31/10;(IPC1-7):H01J29/62 |
主分类号 |
H01J29/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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