发明名称 |
CRT deflection-defocusing correcting member therefor, a method of manufacturing same member, and an image display system including same CRT |
摘要 |
A cathode ray tube including an electron gun including a cathode and a plurality of electrodes and for generating an electron beam, a phosphor screen and an electron beam deflection device. The cathode ray tube includes a deflection-defocusing correcting member having laminated nonmagnetic and magnetic materials disposed in a deflection magnetic field produced by the electron beam deflection device for establishing at least one non-uniform magnetic field. The magnetic materials are disposed at positions with respect to a path of the electron beam where a magnetic flux density of said deflection magnetic field is more than five per cent of a maximum magnetic flux density of the deflection magnetic field.
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申请公布号 |
US6259196(B1) |
申请公布日期 |
2001.07.10 |
申请号 |
US19990389222 |
申请日期 |
1999.09.03 |
申请人 |
HITACHI, LTD. |
发明人 |
MISONO MASAYOSHI;TOJYO TUTOMU;TAMURA HIROYUKI;SUGIYAMA MITSUHIRO |
分类号 |
H01J29/58;H01J29/70;(IPC1-7):H01J29/70;H01J29/46;H01J29/50;H01F7/00;H01F3/12 |
主分类号 |
H01J29/58 |
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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