发明授权
- 专利标题： CRT deflection-defocusing correcting member therefor, a method of manufacturing same member, and an image display system including same CRT
- 专利标题（中）： CRT偏转散焦校正构件，其制造方法以及包括其的CRT的图像显示系统
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申请号： US09389222申请日： 1999-09-03
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公开(公告)号： US06259196B1公开(公告)日： 2001-07-10
- 发明人: Masayoshi Misono , Tutomu Tojyo , Hiroyuki Tamura , Mitsuhiro Sugiyama
- 申请人： Masayoshi Misono , Tutomu Tojyo , Hiroyuki Tamura , Mitsuhiro Sugiyama
- 优先权： JP8-39673 19960227; JP8-240611 19960911
- 主分类号： H01J2970
- IPC分类号： H01J2970
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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