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    Cathode ray tube apparatus intended to reduce magnetic fluxes leaked outside the apparatus
    1.
    发明公开
    Cathode ray tube apparatus intended to reduce magnetic fluxes leaked outside the apparatus 失效
    Kathodenstrahlrohreinrichtung zur Verringerung von magnetischenStreuflüssenausserhalb der Einrichtung。

    公开(公告)号：EP0401831A1

    公开(公告)日：1990-12-12

    申请号：EP90110822.5

    申请日：1990-06-07

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Yokota, Masahiro, C/o Intellectual Property Div. ,  Mori, Hideo, C/o Intellectual Property Div. ,  Oyama, Kiyoshi, C/o Intellectual Property Div.

    IPC分类号： H01J29/76 ,  H01J29/96

    CPC分类号： H01J29/003 ,  H01J2229/0015

    摘要： In a cathode ray tube apparatus, a deflection yoke (21) for generating an effective magnetic field to deflect electron beams in an envelope (27) is provided around a funnel of the envelope (27). A pair of front magnetic coils (22a, 22b) are in substantially symme­trical with respect to a horizontal plane including a tube axis and a horizontal direction and are provided on a skirt of the envelope (27). A pair of rear magnetic coils (22c, 22d) are also arranged in substantially symmetrical with respect to the horizontal plane and are provided on the deflection yoke (21). Leakage magnetic fluxes generated from the deflection yoke (21) are reduced by compensating magnetic fluxes generated from the front and rear magnetic coils (22a, 22b, 22c, 22d).

    摘要翻译： 在阴极射线管装置中，围绕封套（27）的漏斗设置用于产生用于偏转封套（27）中的电子束的有效磁场的偏转线圈（21）。 一对前磁线圈（22a，22b）相对于包括管轴线和水平方向的水平面基本对称，并且设置在信封（27）的裙部上。 一对后部磁性线圈（22c，22d）也布置成相对于水平面基本对称，并设置在偏转线圈（21）上。 通过补偿从前后的磁性线圈（22a，22b，22c，22d）产生的磁通来减少从偏转线圈（21）产生的泄漏磁通量。