发明名称 |
Color cathode ray tube apparatus |
摘要 |
In a color cathode ray tube apparatus wherein three in-line electron beams are deflected by horizontal and vertical deflection magnetic fields of a deflector. The three in-line electron beams are arranged along an axis that is inclined with respect to a horizontal axis perpendicular to the tube axis and are emitted from an electron beam producing unit. Of the three electron beams, the center beam is focused at a higher degree than the pair of side beams by an electric field lens forming unit. The pair of side beams are deflected by a deflecting unit in the direction of arrangement of the three electron beams away from the center beam and are made incident on a focusing magnetic field generating device constituting a common magnetic field focusing type electron lens for focusing and converging the three electron beams. Then, the three electron beams are directed to a phosphor screen. Accordingly, the electron beams are desirably focused and converged on the phosphor screen with a small beam spot size.
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申请公布号 |
US5495139(A) |
申请公布日期 |
1996.02.27 |
申请号 |
US19930083693 |
申请日期 |
1993.06.30 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
KAMOHARA, EIJI;SHIMOKOBE, JIRO |
分类号 |
H01J29/48;H01J29/66;(IPC1-7):H01J29/50 |
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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