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    • 4. 发明授权
    • Cathode-ray tube
    • 阴极射线管
    • US4379251A
    • 1983-04-05
    • US208970
    • 1980-11-21
    • Marcel BrouhaWaltherus W. van den HoogenhofPeter C. van Loosdregt
    • Marcel BrouhaWaltherus W. van den HoogenhofPeter C. van Loosdregt
    • H01J31/20H01J29/07H01J29/81
    • H01J29/81
    • In a cathode-ray tube for displaying colored pictures comprising in an evacuated envelope means to generate a number of electron beams, a display screen comprising a number of regions luminescing in different colors, and color selection means comprising a large number of apertures which assign each electron beam to luminescent regions of one color, in which color selection means a magnetic quadrupole field is generated to form a magnetic quadrupole electron lens in each aperture, which luminescent regions have the shape of substantially parallel strips the longitudinal direction of which is substantially parallel to the defocusing direction of the quadrupole lens, characterized in that the apertures are elongate, substantially hexagonal and symmetrical relative to their longitudinal axes and are situated with their longitudinal axes in a number of parallel rows which extend substantially parallel to the strips and the apertures of two juxtaposed rows are shifted relative to each other, it is possible, in spite of the large transmission of the color selection means, to obtain a display screen having very uniform phosphor strips.
    • 在用于显示彩色图像的阴极射线管中,其包括在真空包络装置中以产生多个电子束,显示屏幕包括以不同颜色发光的多个区域,以及包括大量孔径的颜色选择装置, 电子束发射到一种颜色的发光区域,其中颜色选择意味着产生磁四极场,以在每个孔中形成四极四极电子透镜,这些发光区域具有基本平行的形状,其纵向方向基本上平行于 四极透镜的散焦方向,其特征在于,所述孔是细长的,基本上是六边形的并且相对于它们的纵向轴线对称,并且它们的纵向轴线以大致平行的条状并且两个孔的两个平行的列 并列相对移动, 尽管颜色选择装置的透射率很大,但是可以获得具有非常均匀的荧光带的显示屏。