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    • 91. 发明授权
    • Display tube and an electron beam deflector therefor
    • 显示管和电子束偏转器
    • US4588920A
    • 1986-05-13
    • US451996
    • 1982-12-21
    • James Smith
    • James Smith
    • H01J29/74H01J31/12
    • H01J31/124H01J29/74
    • A display tube having an electron gun and an electron beam deflector including first and second electrode arrangements disposed successively along the electron beam path from the electron gun. Each electrode arrangement includes a pair of resistive plates extending transverse to the path of the electron beam and disposed on opposite sides of the path. The plates of each electrode arrangement are joined at their top and bottom ends and a potential difference is applied across the plates to provide electrical fields substantially normal to the electron beam path. The fields provided by the respective electrode arrangements are equal and opposite so that the angular deflection of the electron beam caused by the first electrode arrangement is cancelled by the second electrode arrangement and the electron beam leaves the electron beam deflector on a path parallel to (or coincident with) the path it entered the deflector. In order to ensure that no additional angular deflection of the electron beam occurs when it crosses the interface between the first and second electrode arrangements, the voltages applied to the second electrode arrangement are varied so that the point of entry of the electron beam is at an equipotential with that of the beam.
    • 一种具有电子枪和电子束偏转器的显示管,其包括沿着电子枪的电子束路径连续设置的第一和第二电极布置。 每个电极装置包括横向于电子束的路径延伸并设置在路径的相对侧上的一对电阻板。 每个电极装置的板在它们的顶端和底端被连接,并且跨越板施加电位差以提供基本上垂直于电子束路径的电场。 由各个电极装置提供的场相同和相反,使得由第一电极装置引起的电子束的角度偏转被第二电极装置抵消,并且电子束将电子束偏转器离开在平行于(或 符合)进入偏转器的路径。 为了确保当电子束穿过第一和第二电极装置之间的界面时不会发生额外的电子束的角度偏转,施加到第二电极装置的电压是变化的,使得电子束的入射点处于 等电位与梁的等电位。
    • 95. 发明授权
    • Cathode ray tube having auxiliary deflection plate to correct pincushion distortion
    • 具有辅助偏转板的阴极射线管校正引脚失真
    • US3670199A
    • 1972-06-13
    • US3670199D
    • 1970-04-06
    • TEKTRONIX INC
    • HAWES JAMES D
    • G01R13/20H01J29/74H01J31/12H01J29/50
    • H01J29/74G01R13/20H01J31/121
    • A cathode ray tube having two electron beams and associated deflection systems is described in which an auxiliary deflection plate is employed between two pairs of vertical deflection plates at their outputs to correct pincushion distortion. A correction signal is produced by a control circuit and applied to the auxiliary deflection plate in response to a ramp voltage input corresponding to the horizontal sweep signal. The correction signal is a positive going peak shaped voltage so that the auxiliary deflection plate tends to vertically deflect the beams away from such plate at both the start and end of the horizontal sweep signal to correct pincushion distortion while not deflecting such beam appreciatively at the center of such sweep signal.
    • 描述了具有两个电子束和相关联的偏转系统的阴极射线管,其中在它们的输出处的两对垂直偏转板之间采用辅助偏转板以校正枕形失真。 校正信号由控制电路产生并响应于对应于水平扫描信号的斜坡电压输入而施加到辅助偏转板。 校正信号是正向峰值形状的电压,使得辅助偏转板倾向于在水平扫描信号的开始和结束处使波束远离这种板垂直偏转,以校正枕形失真,而不会在中心偏转这种光束 的扫描信号。