公开(公告)号：FI73337B

公开(公告)日：1987-05-29

申请号：FI822370

申请日：1982-07-02

Applicant: RCA CORP

Inventor： MORRELL ALBERT MAXWELL ,  HUGHES RICHARD HENRY ,  BARKOW WILLIAM HENRY

IPC: H01J29/50 ,  H01J29/51 ,  H01J29/62 ,  H01J29/46

Abstract: The assembly (Fig. 3) has a trio of inline cathodes (21), a first grid (G1, 23) positioned adjacent the cathodes and a second grid (G2, 25) positioned between the first grid and a first focussing electrode (G3, 27). Each grid and electrode has a trio of inline apertures aligned with the cathodes. A common, assymmetric focussing lens is, in use, established between the first focussing electrode (G3) and a second focussing electrode (G4, 29). The lens has a maximum transverse dimension in a first direction parallel to the plane of the inline apertures greater than its maximum transverse dimension in a second orthogonal direction. In order that the cross-section of each electron beam has a greater dimension in the first direction than in the second direction at the beam- entrance of the lens, there is a slotted structure (Fig. 7, 68) associated with said first (23) grid interposing a rectangular slot (68) between each aperture (64) of the first grid and the aligned aperture of the second grid. The long dimension of the rectangle is in the second direction in the first grid (23).

公开(公告)号：GB2101397B

公开(公告)日：1986-08-20

申请号：GB8219509

申请日：1982-07-06

Applicant: RCA CORP

Inventor： HUGHES RICHARD HENRY ,  MORRELL ALBERT MAXWELL ,  BARKOW WILLIAM HENRY

IPC: H01J29/50 ,  H01J29/51 ,  H01J29/62 ,  H01J31/20 ,  H01J29/48 ,  H01J29/76

Abstract: The assembly (Fig. 3) has a trio of inline cathodes (21), a first grid (G1, 23) positioned adjacent the cathodes and a second grid (G2, 25) positioned between the first grid and a first focussing electrode (G3, 27). Each grid and electrode has a trio of inline apertures aligned with the cathodes. A common, assymmetric focussing lens is, in use, established between the first focussing electrode (G3) and a second focussing electrode (G4, 29). The lens has a maximum transverse dimension in a first direction parallel to the plane of the inline apertures greater than its maximum transverse dimension in a second orthogonal direction. In order that the cross-section of each electron beam has a greater dimension in the first direction than in the second direction at the beam- entrance of the lens, there is a slotted structure (Fig. 7, 68) associated with said first (23) grid interposing a rectangular slot (68) between each aperture (64) of the first grid and the aligned aperture of the second grid. The long dimension of the rectangle is in the second direction in the first grid (23).

公开(公告)号：GB2164490A

公开(公告)日：1986-03-19

申请号：GB8527360

申请日：1985-11-06

Applicant: RCA CORP

Inventor： MORRELL ALBERT MAXWELL ,  HUGHES RICHARD HENRY ,  BARKOW WILLIAM HENRY

IPC: H01J29/50 ,  H01J29/51 ,  H01J29/62 ,  H01J29/48 ,  H01J29/56

Abstract: The assembly (Fig. 3) has a trio of inline cathodes (21), a first grid (G1, 23) positioned adjacent the cathodes and a second grid (G2, 25) positioned between the first grid and a first focussing electrode (G3, 27). Each grid and electrode has a trio of inline apertures aligned with the cathodes. A common, assymmetric focussing lens is, in use, established between the first focussing electrode (G3) and a second focussing electrode (G4, 29). The lens has a maximum transverse dimension in a first direction parallel to the plane of the inline apertures greater than its maximum transverse dimension in a second orthogonal direction. In order that the cross-section of each electron beam has a greater dimension in the first direction than in the second direction at the beam- entrance of the lens, there is a slotted structure (Fig. 7, 68) associated with said first (23) grid interposing a rectangular slot (68) between each aperture (64) of the first grid and the aligned aperture of the second grid. The long dimension of the rectangle is in the second direction in the first grid (23).

公开(公告)号：IT8424007D0

公开(公告)日：1984-12-12

申请号：IT2400784

申请日：1984-12-12

Applicant: RCA CORP

Inventor： CHEN HSING-YAO ,  HUGHES RICHARD HENRY

IPC: H01J29/51 ,  H01J29/70 ,  H01J

Abstract: The present invention provides an improvement in a color picture tube having an inline electron gun for generating and directing three inline electron beams, comprising a center beam and two outer beams, along initially coplanar paths toward a screen of the tube. The beams pass through a deflection zone adapted to have two orthogonal magnetic deflection fields established therein. A first of the fields causes deflection of the beams perpendicular to the inline direction of the beams, and a second of the fields causes deflection parallel to the inline direction of the beams. The improvement comprises the electron gun including four magnetically permeable members located near the exit of the electron gun in a fringe portion of said deflection zone. A first and a second of the members are located between the center beam path and a first and second outer beam path, respectively. A third and a fourth of said members are spaced from the first and second members, respectively, and are located on the outside of the respective outer beam paths. The first and third members and the second and fourth members have means for bypassing a part of the fringe portion of the first of the two orthogonal magnetic deflection fields, at the members, around the respective outer beam paths, while allowing another part of the same fringe portion, at the members, to pass through the respective outer beam paths. The first and second members have means for bypassing a part of the fringe portion of the first of the two orthogonal deflection fields, at the members, around the center beam path, while allowing another part of the same fringe portion, at the members, to pass through the center beam path.

公开(公告)号：DE3304209A1

公开(公告)日：1983-08-18

申请号：DE3304209

申请日：1983-02-08

Applicant: RCA CORP

Inventor： ASSIL NAIM ZAKI ,  HUGHES RICHARD HENRY

IPC: H01J29/74 ,  H01J29/50 ,  H01J29/51

公开(公告)号：BR8203962A

公开(公告)日：1983-06-28

申请号：BR8203962

申请日：1982-07-08

Applicant: RCA CORP

Inventor： MORRELL ALBERT MAXWELL ,  HUGHES RICHARD HENRY ,  BARKOW WILLIAM HENRY

IPC: H01J29/50 ,  H01J29/51 ,  H01J29/62 ,  H01J29/46

Abstract: The assembly (Fig. 3) has a trio of inline cathodes (21), a first grid (G1, 23) positioned adjacent the cathodes and a second grid (G2, 25) positioned between the first grid and a first focussing electrode (G3, 27). Each grid and electrode has a trio of inline apertures aligned with the cathodes. A common, assymmetric focussing lens is, in use, established between the first focussing electrode (G3) and a second focussing electrode (G4, 29). The lens has a maximum transverse dimension in a first direction parallel to the plane of the inline apertures greater than its maximum transverse dimension in a second orthogonal direction. In order that the cross-section of each electron beam has a greater dimension in the first direction than in the second direction at the beam- entrance of the lens, there is a slotted structure (Fig. 7, 68) associated with said first (23) grid interposing a rectangular slot (68) between each aperture (64) of the first grid and the aligned aperture of the second grid. The long dimension of the rectangle is in the second direction in the first grid (23).

公开(公告)号：MX148052A

公开(公告)日：1983-03-09

申请号：MX17540278

申请日：1978-10-27

Applicant: RCA CORP

Inventor： HUGHES RICHARD HENRY

IPC: H01J29/48

公开(公告)号：FR2509526A1

公开(公告)日：1983-01-14

申请号：FR8211735

申请日：1982-07-05

Applicant: RCA CORP

Inventor： CHEN HSING-YAO ,  HUGHES RICHARD HENRY

IPC: H01J29/48 ,  H01J29/46 ,  H01J29/50 ,  H01J29/62 ,  H01J31/20

Abstract: A color CRT has an inline electron gun for generating and directing three electron beams toward a screen, the gun including a main focus lens formed by two spaced electrodes (40, 42) each having three separate inline apertures (58,60,62;64,66,68) and a peripheral rim (70,72), the apertured portion of each electrode being within a recess (54,56) set back from the rim, 15 wherein the main focus lens electrode (42) closest to the screen includes a slot (95) e.g. formed by two strips (96,98), on the side facing the screen, the slot extending in the direction of the three electron beam paths and includes means for providing a weaker stigmator effect on the two side beams than on the center beam. As shown in Figure 5 the ends of the strips (96, 98) may be tapered, or curved or the strips shortened, to provide the weaker stigmator effect. Alternatively, Figures 9 and 10 (not shown), the slot is dogboned in shape and located in a bracket (102) attached to an apertured plate (52), in turn attached to the screen side of the main focus lens electrode closest to the screen.

公开(公告)号：FI822370L

公开(公告)日：1983-01-11

申请号：FI822370

申请日：1982-07-02

Applicant: RCA CORP

Inventor： MORRELL ALBERT MAXWELL ,  HUGHES RICHARD HENRY ,  BARKOW WILLIAM HENRY

IPC: H01J29/50 ,  H01J29/51 ,  H01J29/62 ,  H01J

Abstract: The assembly (Fig. 3) has a trio of inline cathodes (21), a first grid (G1, 23) positioned adjacent the cathodes and a second grid (G2, 25) positioned between the first grid and a first focussing electrode (G3, 27). Each grid and electrode has a trio of inline apertures aligned with the cathodes. A common, assymmetric focussing lens is, in use, established between the first focussing electrode (G3) and a second focussing electrode (G4, 29). The lens has a maximum transverse dimension in a first direction parallel to the plane of the inline apertures greater than its maximum transverse dimension in a second orthogonal direction. In order that the cross-section of each electron beam has a greater dimension in the first direction than in the second direction at the beam- entrance of the lens, there is a slotted structure (Fig. 7, 68) associated with said first (23) grid interposing a rectangular slot (68) between each aperture (64) of the first grid and the aligned aperture of the second grid. The long dimension of the rectangle is in the second direction in the first grid (23).

公开(公告)号：MX146288A

公开(公告)日：1982-06-02

申请号：MX17749079

申请日：1979-04-30

Applicant: RCA CORP

Inventor： HUGHES RICHARD HENRY

IPC: H01J29/50 ,  H01J29/48 ,  H01J29/51 ,  H01J29/56

Abstract: A color picture tube has an inline electron gun for generating and directing three electron beams, comprising a center beam and two outer beams, along coplanar paths toward a screen of said tube. The three beams pass through a deflection zone adapted to have vertical and horizontal magnetic deflection fields established therein. The improvement comprises the inclusion of first means for weakening the effect of a portion of the horizontal magnetic deflection field on the center electron beam. Such means include elongated magnetic members located between the outer beams and the center beam with the direction of elongation being perpendicular to the plane of the electron beam paths. Also included are second means for weakening the effect of portions of both deflection fields on the two outer beams. The second means includes magnetic shield members completely surrounding each of the outer beam paths.