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    • 14. 发明公开
    • Permanent magnet focus unit with integral astigmatism corrector
    • 永磁体 - 福柯斯系统
    • EP0562200A1
    • 1993-09-29
    • EP92400871.7
    • 1992-03-27
    • THOMSON TUBES & DISPLAYS S.A.
    • Perreaut, Jean MarcThibaudin, DidierRoussel, Bruno
    • H01J29/56H01J29/64
    • H01J29/56H01J29/64H01J29/707
    • A permanent magnet focus unit (50) with integral astigmatism corrector for a cathode ray tube comprises a plurality of permanent magnets (54), each having a longitudinal axis, and a plurality of coils (58). A form (52) holds the magnets in a first annular array at substantially equally spaced intervals in which the magnet axes are substantially parallel to a longitudinal axis defined by the first annular array and holds the coils in a second annular array at positions spaced angularly between the magnets. Annular flanges of high magnetic permeability are disposed over longitudinally opposite ends of the magnets. At least one annular winding is disposed substantially adjacent to and inwardly from the first array of the magnets. The plurality of coils of the second array are coupled in two interleaved sets for generating two quadripole focusing fields for correcting astigmatic aberrations of an electron beam in the cathode ray tube.
    • 具有用于阴极射线管的整体散光校正器的永磁体聚焦单元(50)包括多个永久磁铁(54),每个永磁体具有纵向轴线,以及多个线圈(58)。 形式(52)将磁体以基本等间隔的间隔保持在第一环形阵列中,其中磁体轴线基本上平行于由第一环形阵列限定的纵向轴线,并将线圈保持在第二环形阵列中, 磁铁。 具有高磁导率的环形凸缘设置在磁体的纵向相对端上。 至少一个环形绕组基本上与第一磁体阵列相邻并且向内设置。 第二阵列的多个线圈耦合在两个交错组中,用于产生用于校正阴极射线管中的电子束的象散像差的两个四极聚焦场。
    • 17. 发明公开
    • Colour television display tube with coma correction
    • Farbfernsehanzeigeröhremit Komakorrektur。
    • EP0243541A2
    • 1987-11-04
    • EP86201018.8
    • 1986-06-11
    • Philips Electronics N.V.
    • Sluyterman, Albertus Aemilius Seyno c/o Int.Octr.
    • H01J29/51H01J29/50
    • H01J29/707
    • Colour television display tube comprising an electron gun system (5) of the "in-line" type and an electromagnetic deflection unit. The extremity of the electron gun system is provided with field shapers comprising, for example, annular elements (34,34') of a material having a high magnetic permeability which are positioned around the two outer beams and are adapted to compensate coma. These elements are located in a more advanced position towards the screen than is usual in positions where the outer beams have undergone a pre-deflection of at least 0.5 mm so as to reduce the "green droop" (= anisotropic Y-coma) and to reduce the need of a negative field 6-pole. It is, for example, a characteristic feature that the elements (34,34') are present "above" the bottom of the centring bush (28), or the fact that the distance between focusing gap of the electron gun and elements (34,34') is more than 10 mm, orthe fact that the axial position of the elements (34,34') coincides with the axial beginning of the turns on the line deflection coil, or with respect to the axial beginning is located closer to the display screen.
    • 包括“直列式”的电子枪系统(5)和电磁偏转单元的彩色电视显示管。 电子枪系统的末端设置有场成形器,其包括例如具有高磁导率的材料的环形元件(34,34分钟),其围绕两个外梁​​定位并且适于补偿彗差。 这些元件位于比通常在外光束已经经历至少0.5mm的预偏转的位置处更向前的位置,以减少“绿色下垂”(=各向异性Y-昏迷),并且 减少负极场6极的需要。 例如,元件(34,34分钟)存在于定心衬套(28)的底部之上的特征,或电子枪和元件(34)的聚焦间隙之间的距离 ,34分钟)超过10毫米,或者元件的轴向位置(34,34分钟)与线偏转线圈上的匝的轴向开始重合,或相对于轴向开始位置更靠近 到显示屏。
    • 19. 发明公开
    • Colour display tube
    • 彩色显示管
    • EP0170319A1
    • 1986-02-05
    • EP85201114.7
    • 1985-07-08
    • Philips Electronics N.V.
    • Noordermeer, Leendert Jan
    • H01J29/70H01J29/56
    • H01J29/566H01J29/707
    • A colour display tube comprising in an evacuated envelope (1) an electron gun system (5) of the "in-line" type to generate three electron beams (6, 7, 8) situated with their axes in one plane, said electron beams converging on a display screen (10) provided on a wall of the envelope and, in the operating display tube, being deflected over said display screen in two mutually perpendicular directions by means of a first and a second deflection field, the direction of the first deflection field being parallel to the said plane, said electron gun system comprising at its ends field shapers (34, 35) for causing the frames described on the display screen by the elctron beams to coincide as much as possible, said field shapers comprising substantially annular elements (34) of a meterial having a high magnetic permeability around the two outermost beams. if in addition two elongate flat strips (35) of a material having a high magnetic permeability are provided symmetrically with respect to the axis (9,37) of the central beam and the plane through the beam axes, with their longitudinal axis (L) substantially perpendicularly to the said plane, said strips intersecting the said plane, extending with the width axis (B) in the direction of the display screen (10), and having a recess (38) at the level of the beam (7), then it is possible to compensate the horizontal and vertical coma errors more or less independently of each other.
    • 一种彩色显象管,在真空管壳(1)内包括“一字型”电子枪系统(5),以产生三轴电子束(6,7,8),它们的轴线位于一个平面内,所述电子束 会聚在设置在信封的壁上的显示屏(10)上,并且在操作显示管中通过第一和第二偏转场在两个相互垂直的方向上偏转在所述显示屏上,第一 偏转场与所述平面平行,所述电子枪系统在其端部包括用于使由电子束在显示屏上描述的帧尽可能重合的场成形器(34,35),所述场成形器包括基本上环形的 在两个最外侧梁周围具有高磁导率的材料的元件(34)。 如果另外两个相对于中心梁的轴线(9,37)和通过梁轴线的平面以其纵向轴线(L)对称地设置具有高磁导率的材料的两个细长扁平带(35) 基本上垂直于所述平面,所述条与所述平面相交,沿着显示屏(10)的方向与宽度轴(B)一起延伸,并且在梁(7)的高度上具有凹槽(38) 那么就有可能或多或少相互独立地补偿水平和垂直彗差误差。
    • 20. 发明公开
    • Colour display tube
    • Farbbildwiedergaberöhre。
    • EP0125729A1
    • 1984-11-21
    • EP84200667.8
    • 1984-05-10
    • Philips Electronics N.V.
    • Gerritsen, Jan
    • H01J29/56H01J29/51
    • H01J29/56H01J29/707
    • In a colour display tube comprising in an evacuated envelope an electron gun system of the "in-line" type for generating three electron beams situated with their axes in one plane, in which the axis of the central beam coincides with the tube axis, which electron beams converge on a display screen provided on a wall of the envelope and in operating display tube are deflected over said display screen in two mutually perpendicular directions by means of a first and a second deflection field, the direction of the third deflection field being parallel to the said plane, said electron gun system comprising at its end curved field shapers 27, 28 for causing the rasters written on the display screen by the electron beams to coincide as much as possible, each field shapers comprising at leastthree plates 29,30,31,32 of ferromagnetic material, said plates being situated symmetrically with respect to the said plane and the central beam axis, the curved field shapers facing the three beams with their concave sides, said field shapers making the edge field of the first deflection field to be pincushion-shaped and in which, according to the invention, each field shaper comprises at least two plates situated side by side in the elongation of each other and the slots 35, 36 between said plates on the side remote from the electron beams at a distance from the plates being overlapped by plates 33, 34, so that at least one magnetic shunt is formed in each field shaper for the second magnetic deflection field, the line deflection field is attenuated less and a field disturbance at the area of the electron beams is prevented.
    • 在包括真空外壳中的彩色显像管中,具有“直列”型电子枪系统,用于产生三个电子束,它们的轴线位于一个平面中,其中心梁的轴线与管轴线重合, 电子束会聚在设在信封壁上的显示屏上,并且在操作显示管中借助于第一和第二偏转场在两个相互垂直的方向上偏转在所述显示屏上,第三偏转场的方向是平行的 所述电子枪系统在其端部包括弯曲场成形器27,28,用于使由电子束写入显示屏的光栅尽可能重合,每个场成形器包括至少三个板29,30 ,31,32的铁磁材料,所述板相对于所述平面和中心束轴对称地设置,弯曲场成形器面向三个梁wi 所述场整形器使得第一偏转场的边缘场为枕形,并且根据本发明,每个场整形器包括彼此并排布置的至少两个板, 远离电子束一侧的板之间的板之间的槽35,36与板33,34重叠,使得在每个场整形器中为第二磁偏转场形成至少一个磁分路, 线偏转场减弱,并防止电子束区域的场干扰。