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    • 10. 发明授权
    • Color cathode ray tube device
    • 彩色阴极射线管装置
    • US4820958A
    • 1989-04-11
    • US865352
    • 1986-05-21
    • Taketoshi ShimomaKumio Fukuda
    • Taketoshi ShimomaKumio Fukuda
    • H01J29/76H01J29/70H01J29/50
    • H01J29/76
    • Three electron beams are generated so that they are arranged in-line in a horizontal plane to impinge through a shadow mask on a phosphor screen consisting of red, green and blue phosphors. These beams are generated practically parallel. In the deflection device that deflects the electron beams, the horizontal deflection magnetic field is made uniform and the vertical deflection magnetic field is made barrel shaped. The half-width a of the magnetic flux distribution on the tube axis of the horizontal deflection magnetic field is set so that a/A=0.1 to 0.4, where A is the distance from the center of the magnetic flux density distribution to the phosphor screen surface. It is arranged that the picture signals modulating the respective beams are not mutually time-wise offset since the three electron beams are parallel. Thus little electron beam spot distortion is obtained over the whole picture screen.
    • 产生三个电子束,使得它们在水平面上一排排列,以冲击通过由红色,绿色和蓝色荧光体组成的荧光屏上的荫罩。 这些光束几乎平行地产生。 在使电子束偏转的偏转装置中,使水平偏转磁场均匀,垂直偏转磁场形成为桶形。 水平偏转磁场的管轴上的磁通分布的半宽度a被设定为a / A = 0.1〜0.4,其中A是从磁通密度分布的中心到荧光屏的距离 表面。 布置了调制各个光束的图像信号不是相互时间偏移,因为三个电子束是平行的。 因此,在整个图像屏幕上获得了很少的电子束斑失真。