发明授权
US5189348A Cathode ray tube apparatus intended to reduce magnetic fluxes leaked
outside the apparatus
失效
旨在减少在设备外部泄漏的磁通量的阴极射线管装置
- 专利标题： Cathode ray tube apparatus intended to reduce magnetic fluxes leaked outside the apparatus
- 专利标题（中）： 旨在减少在设备外部泄漏的磁通量的阴极射线管装置
-
申请号： US888281申请日： 1992-05-26
-
公开(公告)号： US5189348A公开(公告)日： 1993-02-23
- 发明人: Masahiro Yokota , Hideo Mori , Kiyoshi Oyama
- 申请人： Masahiro Yokota , Hideo Mori , Kiyoshi Oyama
- 申请人地址： JPX Kawasaki
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JPX Kawasaki
- 优先权： JPX1-146979 19890609
- 主分类号： H01J29/00
- IPC分类号： H01J29/00
摘要：
In a cathode ray tube apparatus, a deflection yoke for generating an effective magnetic field to deflect electron beams in an envelope is provided around a funnel of the envelope. A pair of front magnetic coils 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. A pair of rear magnetic coils are also arranged in substantially symmetrical with respect to the horizontal plane and are provided on the deflection yoke. Leakage magnetic fluxes generated from the deflection yoke are reduced by compensating magnetic fluxes generated from the front and rear magnetic coils.
公开/授权文献
信息查询
