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公开(公告)号：JPS6310444A
公开(公告)日：1988-01-18
申请号：JP15746887
申请日：1987-06-24
Applicant: RCA CORP
Inventor： ALIG ROGER CASANOVA , BLOOM STANLEY , HOCKINGS ERIC FRANCIS
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公开(公告)号：CA1275685C
公开(公告)日：1990-10-30
申请号：CA539610
申请日：1987-06-15
Applicant: RCA CORP
Inventor： BLOOM STANLEY , HOCKINGS ERIC F
Abstract: A color display system includes a cathode-ray tube and a yoke. The yoke is a non-converging deflecting type. The cathode-ray tube has an electron gun for generating and directing three electron beams, a center beam and two outer beams, along paths toward a screen of the tube. The electron gun includes electrodes that comprise a beam-forming region and electrodes that form a main focusing lens. The main focusing lens is formed by at least two focusing electrodes. The focusing electrode closest to the beamforming region includes at least two laterally-spaced parts. Each spaced part forms a portion of a dipole lens structure in the path of an outer electron beam. Means are provided for applying to at least one of the spaced parts a dynamic signal which is related to the deflection of the electron beams.
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公开(公告)号：PT84284A
公开(公告)日：1987-03-01
申请号：PT8428487
申请日：1987-02-12
Applicant: RCA CORP
Inventor： BLOOM STANLEY , HOCKINGS ERIC FRANCIS
Abstract: A color display system (9) includes a cathode-ray tube (10) and yoke (30). The yoke is a self-converging type that produces an astigmatic magnetic deflection field within the tube. The cathode-ray tube has an electron gun (26) for generating and directing three electron beams (28) along paths toward a screen (22) of the tube. The electron gun includes electrodes (34,36,38,40) that comprise a beam-forming region and electrodes (44,46) that form a main focusing lens, and features electrodes (42,44) for forming a multipole lens between the beam-forming region and the main focusing lens in each of the electron beam paths. Each multipole lens is oriented to provide a correction to an associated electron beam to at least partially compensate for the effect of the astigmatic magnetic field on the associated beam. There are two multipole lens electrodes. A second of the two multipole lens electrodes (44) is connected to and combined with a main focusing lens electrode (44), and a first of the two multipole lens electrodes (42) is located between the second multipole lens electrode and the beam-forming region and faces the second multipole lens electrode.
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公开(公告)号：FI870485A0
公开(公告)日：1987-02-05
申请号：FI870485
申请日：1987-02-05
Applicant: RCA CORP
Inventor： BLOOM STANLEY , HOCKINGS ERIC FRANCIS
Abstract: A color display system (9) includes a cathode-ray tube (10) and yoke (30). The yoke is a self-converging type that produces an astigmatic magnetic deflection field within the tube. The cathode-ray tube has an electron gun (26) for generating and directing three electron beams (28) along paths toward a screen (22) of the tube. The electron gun includes electrodes (34,36,38,40) that comprise a beam-forming region and electrodes (44,46) that form a main focusing lens, and features electrodes (42,44) for forming a multipole lens between the beam-forming region and the main focusing lens in each of the electron beam paths. Each multipole lens is oriented to provide a correction to an associated electron beam to at least partially compensate for the effect of the astigmatic magnetic field on the associated beam. There are two multipole lens electrodes. A second of the two multipole lens electrodes (44) is connected to and combined with a main focusing lens electrode (44), and a first of the two multipole lens electrodes (42) is located between the second multipole lens electrode and the beam-forming region and faces the second multipole lens electrode.
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公开(公告)号：FR2531809B1
公开(公告)日：1987-01-02
申请号：FR8313211
申请日：1983-08-11
Applicant: RCA CORP
Inventor： BLOOM STANLEY
Abstract: CRT employs a quadrupolar-focusing color-selection structure comprising two or more apertured masking plates. Each plate has therein an array of substantially rectangular apertures which are positioned relative to one another to produce electrostatic quadrupolar-focusing lenses when operating voltages are applied thereto. The color-selection structure may, by its geometry, provide at the same time electrostatic dipolar deflecting fields when operating voltages are applied.
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Patent Agency Ranking
公开(公告)号：GB2138203B
公开(公告)日：1986-10-15
申请号：GB8408267
申请日：1984-03-30
Applicant: RCA CORP
Inventor： BLOOM STANLEY
Abstract: The novel CRT is similar in structure to prior art CRT's except for the color-selection structure, which, as in the prior CRT's is for producing a plurality of lenses for passing and focusing portions of electron beams to associated color groups of the target. In the novel CRT, the color-selection structure comprises at least one lenticular member having therein an array of windows associated with only one color group, each window having a half-width, r, and a conductive mesh having interstitial dimensions small compared to the phosphor elements in the color groups. The lenticular member is longitudinally spaced a distance, s, from the conductive mesh so that the ratio of the longitudinal spacing, s, to the half-width, r, of the window is much less than unity (s/r
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公开(公告)号：GB2125210B
公开(公告)日：1985-12-04
申请号：GB8320794
申请日：1983-08-02
Applicant: RCA CORP
Inventor： BLOOM STANLEY
Abstract: CRT employs a quadrupolar-focusing color-selection structure comprising two or more apertured masking plates. Each plate has therein an array of substantially rectangular apertures which are positioned relative to one another to produce electrostatic quadrupolar-focusing lenses when operating voltages are applied thereto. The color-selection structure may, by its geometry, provide at the same time electrostatic dipolar deflecting fields when operating voltages are applied.
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公开(公告)号：GB2138203A
公开(公告)日：1984-10-17
申请号：GB8408267
申请日：1984-03-30
Applicant: RCA CORP
Inventor： BLOOM STANLEY
Abstract: The novel CRT is similar in structure to prior art CRT's except for the color-selection structure, which, as in the prior CRT's is for producing a plurality of lenses for passing and focusing portions of electron beams to associated color groups of the target. In the novel CRT, the color-selection structure comprises at least one lenticular member having therein an array of windows associated with only one color group, each window having a half-width, r, and a conductive mesh having interstitial dimensions small compared to the phosphor elements in the color groups. The lenticular member is longitudinally spaced a distance, s, from the conductive mesh so that the ratio of the longitudinal spacing, s, to the half-width, r, of the window is much less than unity (s/r
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公开(公告)号：GB2125210A
公开(公告)日：1984-02-29
申请号：GB8320794
申请日：1983-08-02
Applicant: RCA CORP
Inventor： BLOOM STANLEY
Abstract: CRT employs a quadrupolar-focusing color-selection structure comprising two or more apertured masking plates. Each plate has therein an array of substantially rectangular apertures which are positioned relative to one another to produce electrostatic quadrupolar-focusing lenses when operating voltages are applied thereto. The color-selection structure may, by its geometry, provide at the same time electrostatic dipolar deflecting fields when operating voltages are applied.
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公开(公告)号：FR2531809A1
公开(公告)日：1984-02-17
申请号：FR8313211
申请日：1983-08-11
Applicant: RCA CORP
Inventor： BLOOM STANLEY
Abstract: CRT employs a quadrupolar-focusing color-selection structure comprising two or more apertured masking plates. Each plate has therein an array of substantially rectangular apertures which are positioned relative to one another to produce electrostatic quadrupolar-focusing lenses when operating voltages are applied thereto. The color-selection structure may, by its geometry, provide at the same time electrostatic dipolar deflecting fields when operating voltages are applied.
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