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    Misconvergence compensation for single-gun, plural-beam-type color tv picture tube
    21.
    发明授权
    Misconvergence compensation for single-gun, plural-beam-type color tv picture tube 失效
    单枪支，双光束型彩色电视图像管的错误补偿

    公开(公告)号：US3614500A

    公开(公告)日：1971-10-19

    申请号：US3614500D

    申请日：1969-04-14

    Applicant: SONY CORP

    Inventor： MIYAOKA SENRI ,  MORIO MINORU

    IPC: H01J31/20 ,  H01J29/02 ,  H01J29/74

    CPC classification number: B82Y10/00 ,  H01J31/206

    Abstract: A single-gun, plural-beam-type color television picture tube in which three electron beams representing different color signals are focused by a single lens, after which two of the beams diverge. The two divergent beams are reconverge by convergence deflecting means so they will intersect with the third beam at a common point at a beam-selecting grid, from which point the beams again diverge to impinge on respective color phosphors which together represent a color picture element. Misconvergence, i.e., reconvergence of the two divergent beams to a point other than to the common point of intersection with the third beam, which arises from manufacturing inaccuracies such as the misorientation of the convergence deflecting means with respect to the single electron gun of the tube, or the misorientation of the aperture of the beam-generating means of the tube, is compensated for by the provision of convergence deflecting means which exerts upon at least one of the divergent beams an electric, or Coulomb, force which varies in its direction in accordance with the position at which the beam enters and passes through the convergence deflecting means. Thereby, variations in the direction of the electric force compensates for variations in the position at which the beam is introduced to eliminate the misconvergence which arises from the above-mentioned manufacturing inaccuracies.

    Color tube with convergence electrode mounting and connecting structure
    22.
    发明授权
    Color tube with convergence electrode mounting and connecting structure 失效
    彩色管与电极连接安装和连接结构

    公开(公告)号：US3575625A

    公开(公告)日：1971-04-20

    申请号：US3575625D

    申请日：1969-04-07

    Applicant: SONY CORP

    Inventor： MIYAOKA SENRI

    IPC: H01J29/51 ,  H01J31/20 ,  H01J29/56 ,  H01J29/74 ,  H01J29/82

    CPC classification number: B82Y10/00 ,  H01J29/51 ,  H01J31/206

    Abstract: In a single-gun, plural-beam color picture tube in which two beams emerge from a focusing lens along paths that diverge with respect to a central beam emerging along the optical axis of the lens by which all of the beams are focused on the color screen, and the divergent beams are deflected to converge with the central beam by passage through respective electrical fields established between first spaced plates, at opposite sides of the central beam path, and second plates spaced outwardly from the first plates; such plates are disposed closely adjacent to the main deflection yoke by which the beams are made to scan the screen so that the length of the tube can be minimized, and the misconvergence of the beams that would result from a current flow induced in a closed conductive loop that includes the first plates by flux change of the magnetic field of the main deflection yoke is avoided by mounting the first plates in a cantilevered manner at one end and by omitting any conductive connections between the remainder of such plates so that a conductive loop does not exist for the induced current.

    Plural beam electron gun for a color picture tube with different-sized control grid apertures
    23.
    发明授权
    Plural beam electron gun for a color picture tube with different-sized control grid apertures 失效
    用于具有不同尺寸控制网格的彩色图像管的PLURAL BEAM ELECTRON GUN

    公开(公告)号：US3571643A

    公开(公告)日：1971-03-23

    申请号：US3571643D

    申请日：1968-09-18

    Applicant: SONY CORP

    Inventor： YOSHIDA SUSUMU ,  OHGOSHI AKIO ,  MIYAOKA SENRI

    IPC: H01J29/51 ,  H01J31/20 ,  H01J29/50

    CPC classification number: H01J29/51 ,  H01J31/206

    Abstract: In a color picture tube having plural beams emitted from a cathode structure to pass through respective apertures of a control grid structure for intensity modulation and being focused to impinge on respective color phosphors, the relationship of beam currents required for good white balance is achieved by giving a relatively large area to the control grid aperture corresponding to the beam, particularly the green beam, which is to have a relatively high beam current. Preferably, the grid aperture of large area is divided into parts so as to achieve the necessary increased beam current without a corresponding change in the cutoff voltage.

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