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公开(公告)号：FR2509527A1
公开(公告)日：1983-01-14
申请号：FR8212131
申请日：1982-07-09
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , HUGHES RICHARD HENRY , BARKOW WILLIAM HENRY
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).
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公开(公告)号：GB2101397A
公开(公告)日：1983-01-12
申请号：GB8219509
申请日：1982-07-06
Applicant: RCA CORP
Inventor： HUGHES RICHARD HENRY , MORRELL ALBERT MAXWELL , BARKOW WILLIAM HENRY
Abstract: In a colour display tube with a self-convergent deflection yoke and in-line gun assembly, the beams are predistorted by asymmetric beam passage apertures in electrode 23 (and see Fig. 7) before entering the main focusing lens formed between electrodes 27 and 29, which have recessed apertures common to the three beams at their juxtaposed ends, the recesses being respectively of racetrack (Fig. 4) and dogbone (Fig. 5) shape, and such that the major transverse dimension of the lens exceeds three times the spacing between adjacent apertures in each electrode 27 and 29, and the spacing between adjacent beams does not exceed 200 mils in the transverse planes through the deflection centres. The internal diameter of the deflection yoke at the exit end of its windows is less than 30 mils per degree of the deflection angle defined by diagonally opposed corners of the raster. A formula for envelope shape is disclosed (Figures 11 and 12).
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公开(公告)号：IT8221964D0
公开(公告)日：1982-06-21
申请号：IT2196482
申请日：1982-06-21
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , HUGHES RICHARD HENRY , BARKOW WILLIAM HENRY
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).
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公开(公告)号：FI782109A
公开(公告)日：1979-01-09
申请号：FI782109
申请日：1978-06-30
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL
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Patent Agency Ranking
公开(公告)号：DE2352364A1
公开(公告)日：1974-05-09
申请号：DE2352364
申请日：1973-10-18
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , IRLBECK DENNIS HENRY
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公开(公告)号：DE2352363A1
公开(公告)日：1974-05-09
申请号：DE2352363
申请日：1973-10-18
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , HEKKEN FRANS VAN
Abstract: A correcting lens for use in the formation of a color television picture tube screen that is excitable by an electron beam comprises a plurality of individually contoured elements that extend from a point common to all elements to an edge of the lens. Adjacent elements are separated by boundaries and all boundaries extend radially outward from the common point. Each element is individually contoured to direct light onto predetermined paths of the electron beam toward a similarly shaped corresponding area of the screen.
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公开(公告)号：DE2222156A1
公开(公告)日：1973-07-19
申请号：DE2222156
申请日：1972-05-05
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , BARKOW WILLIAM HENRY , GROSS JOSEF
Abstract: 1385745 Colour television tubes RCA CORPORATION 1 May 1972 [14 Jan 1972] 20047/72 Heading H1D A colour television tube of the shadow mask type using three co-planar beams, is provided with a deflection yoke adapted to produce a pin cushion shaped horizontal deflecting field which causes under convergence at extreme horizontal deflection, and a barrel-shaped vertical deflecting field which causes over-convergence at extreme vertical deflection; and the electron gun is adapted to produce a spacing between the beams at the centre of the deflection yoke not greater than 0À2 inch. Dynamic convergence arrangements are then unnecessary but may be provided for larger tubes. The electron gun may comprise three individual cathodes and common G1 to G4 electrodes provided with apertures for the beams; the outer apertures of the final electrode may be surrounded by magnetically permeable material such as nickel iron to partly screen the outer beams from the deflection fields and thereby equalize the raster sizes for the three colours. The deflection yoke is as described in Specification 1385747 and is preferaby toroidal but saddle coils may be used. The shadow mask may be provided with elongate apertures, and the fluorescent screen may comprise stripes of different colours.
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公开(公告)号：GB2175133B
公开(公告)日：1989-06-21
申请号：GB8605931
申请日：1986-03-11
Applicant: RCA CORP
Inventor： MORRELL ALBERT MAXWELL , MASTERTON WALTER DAVID
Abstract: An improvement is made in a color picture tube having a substantially rectangular slit-aperture type shadow mask mounted therein in spaced relation to a substantially rectangular cathodoluminescent line screen. In the specific improvement, the cathodoluminescent lines of said screen, in front plan view, first increase in curvature with an increase in distance from the minor axis of the screen and then decrease in curvature with further increase in distance from the minor axis, to become substantially straight at the short sides of the screen.
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