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    6.
    发明专利
    未知

    公开(公告)号：DE2405610A1

    公开(公告)日：1974-09-05

    申请号：DE2405610

    申请日：1974-02-06

    Applicant: PHILIPS NV

    Inventor： BARTEN PIET GERARD JOSEPH

    IPC: H01J29/07 ,  H01J31/20 ,  H01J29/06

    Abstract: A color cathode-ray tube having a shadow mask comprising parallel rows of rectangular apertures. The rows of apertures are staggered relative to each other in n steps so as to reduce Moire patterns; the intermediate distance between the apertures in the direction of the rows is chosen to be equal to p/n, where p is the pitch in the direction of the rows between the apertures.

    COLOUR DISPLAY TUBE
    7.
    发明专利
    COLOUR DISPLAY TUBE 未知

    公开(公告)号：DE3478886D1

    公开(公告)日：1989-08-10

    申请号：DE3478886

    申请日：1984-10-03

    Applicant: PHILIPS NV

    Inventor： GERRITSEN JAN ,  BARTEN PIET GERARD JOSEPH ,  MENSIES OTTO

    IPC: H01J29/51 ,  H01J29/56 ,  H01J29/70 ,  H01J29/50

    Abstract: In a color display tube having an electron gun of the "in-line" type for generating three electron beams situated with their axes in one plane, the electron gun includes curved field shapers at the end from which the beams exit into frame and line deflection fields. Each field shaper includes two or more plates of ferromagnetic material aligned along a curve and spaced from each other by slots. The plates are arranged symmetrically with respect to the plane and the central beam axis, and a concave side of each field shaper faces the three beam axes. At least the ends of each field shaper which are most remote from the plane have substantially flat plates extending in the direction of the central electron beam axis. By using such field shapers the losses in the line deflection field are small and substantially undistorted, while a desirable pincushion-shaped distortion of the frame deflection field is intensified.

    COLOUR DISPLAY TUBE
    8.
    发明专利
    COLOUR DISPLAY TUBE 未知

    公开(公告)号：DE3367302D1

    公开(公告)日：1986-12-04

    申请号：DE3367302

    申请日：1983-11-15

    Applicant: PHILIPS NV

    Inventor： BARTEN PIET GERARD JOSEPH

    IPC: H01J29/51 ,  H01J29/56 ,  H01J29/70 ,  H01J29/50

    Abstract: In a color display tube of the so-called "in-line" type, the magnetic field which extends substantially parallel to the plane through the beam axes is distorted so as to be locally pincushion-shaped by means of field shapers at the end of the electron gun system. This effects coma correction for the rasters produced by the three electron beams at the display screen, without causing substantial deflection defocusing of the side beams.

    9.
    发明专利
    未知

    公开(公告)号：DE2907300A1

    公开(公告)日：1979-09-06

    申请号：DE2907300

    申请日：1979-02-24

    Applicant: PHILIPS NV

    Inventor： BARTEN PIET GERARD JOSEPH

    IPC: H01J29/51 ,  H01J29/70 ,  H01J29/56

    Abstract: Because the deflection fields in color television display tubes on the display screen side often have a pin-cushion-shaped and barrel-shaped field distribution, a defocusing of the electron beams occurs upon deflection. By forming the barrel-shaped deflection field on the display screen side of the display tube so as to be pin-cushion-shaped on the neck side near each electron beam and simultaneously deforming the deflection field which is pin-cushion-shaped on the display screen side of the display tube so as to be barrel-shaped on the neck side near each electron beam, the effects of said defocusing of the electron beams as a result of the deflection are considerably reduced. The haze occurring in the vertical direction is also reduced.

    STATIC CONVERGENCE UNIT
    10.
    发明专利
    STATIC CONVERGENCE UNIT 未知

    公开(公告)号：AU1184276A

    公开(公告)日：1977-09-15

    申请号：AU1184276

    申请日：1976-03-11

    Applicant: PHILIPS NV

    Inventor： BARTEN PIET GERARD JOSEPH

    IPC: H01J29/54 ,  H01J29/70 ,  H04N9/28 ,  H01J29/51

    Abstract: 1532462 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 March 1976 [13 March 1975] 09522/76 Heading H1D A static convergence device mounted about the neck of a three coplanar beam colour television tube comprises at least two annular magnetic structures which enclose the neck of the tube but are eccentrically arranged with respect to each other and to the longitudinal axis of the tube, and each of which generates a six-pole magnetic field, whereby the beams may be adjusted substantially independently of each other. As described, two structures are arranged one at each mid-point between the centre beam and a side beam, each structure (Figs. 3 and 4, not shown) being in the form of a pair of six pole annular magnetic rings (47, 49 and 46, 48, respectively) rotatable with respect to each other to adjust the corresponding side beam. In an embodiment employing electromagnets (Figs. 5, 6 and 7, not shown), independent horizontal and vertical adjustment of each outer beam is obtained by the use, for each structure, of a ring having 12 pole shoes, the coils of which are wound to form two independently energized 6-pole systems, angularly displaced through 30 degrees.

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