公开(公告)号：PL231883A1

公开(公告)日：1982-01-04

申请号：PL23188381

申请日：1981-06-26

Applicant: RCA CORP

Inventor： BLOOM STANLEY ,  CATANESE CARMEN A

IPC: H01J29/07 ,  H01J29/74 ,  H01J31/20 ,  H01J29/81

Abstract: A CRT comprises a deflection-and-focus color-selection masking structure, a screen of parallel phosphor stripes, and means for producing three convergent in-line electron beams directed towards the target. The masking structure comprises a metal masking plate having two major surfaces and having therein an array of apertures arranged in columns that are substantially parallel to the phosphor stripes. Arrays of narrow conductors are insulatingly supported in opposed positions on each major surface of said plate. The conductors extend substantially parallel to the stripes and are located in every other space between the columns.

公开(公告)号：MX170842B

公开(公告)日：1993-09-20

申请号：MX1761987

申请日：1987-09-28

Applicant: RCA CORP

Inventor： BLOOM STANLEY ,  HOCKINGS ERIC FRANCIS

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/56 ,  H04N3/22 ,  H04N9/28 ,  H01J29/58

Abstract: A color display system (9) includes a cathode-ray tube (10) and self-converging yoke (30) that produces an astigmatic magnetic deflection field within the tube. The gun (26) includes beam-forming region electrodes (34,36,38,40), main focusing lens electrodes (44,46), and two 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 deflection field on that beam. A first multipole lens electrode (42) is located between the beam-forming region electrodes and the main focusing lens electrodes. A second multipole electrode (44) is connected to a main focusing lens electrode and located between the first multipole lens electrode and the main focusing lens, adjacent to the first multipole lens electrode.

公开(公告)号：CA1278814C

公开(公告)日：1991-01-08

申请号：CA538958

申请日：1987-06-05

Applicant: RCA CORP

Inventor： ALIG ROGER C ,  BLOOM STANLEY ,  HOCKINGS ERIC F

IPC: H01J29/50 ,  H01J29/51 ,  H04N9/28

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 assembly for generating and directing three electron beams, located at the corners of an equilateral triangle, along paths toward a screen of the tube. The electron gun assembly comprises three electron guns each including electrodes that comprise a beam-forming region and electrodes that form a main focusing lens in the path of an electron beam. The main focusing lens is formed by at least two focusing electrodes. The focusing electrode closest to the beamforming region includes a separated part adjacent to the path of the electron beam. Each separated part forms a portion of a dipole lens structure in the electron beam path. Means are provided for applying dynamic signals to the separated parts which are related to the deflection of the electron beams. The dipole lens structures establish electrostatic dipole fields in the path of the three electron beams that cause the beams to converge at the screen for all angles of deflection.

公开(公告)号：DD262525A5

公开(公告)日：1988-11-30

申请号：DD30737487

申请日：1987-09-29

Applicant: RCA CORP

Inventor： BLOOM STANLEY ,  HOCKINGS ERIC F

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/56 ,  H04N3/22 ,  H04N9/28 ,  H04N9/285 ,  H01J29/51

Abstract: A color display system (9) includes a cathode-ray tube (10) and self-converging yoke (30) that produces an astigmatic magnetic deflection field within the tube. The gun (26) includes beam-forming region electrodes (34,36,38,40), main focusing lens electrodes (44,46), and two 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 deflection field on that beam. A first multipole lens electrode (42) is located between the beam-forming region electrodes and the main focusing lens electrodes. A second multipole electrode (44) is connected to a main focusing lens electrode and located between the first multipole lens electrode and the main focusing lens, adjacent to the first multipole lens electrode.

公开(公告)号：CA1245344A

公开(公告)日：1988-11-22

申请号：CA547290

申请日：1987-09-18

Applicant: RCA CORP

Inventor： BLOOM STANLEY ,  HOCKINGS ERIC F

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/56 ,  H04N3/22 ,  H04N9/28 ,  H04N9/12

Abstract: A color display system includes a cathode-ray tube and self-converging yoke that produces an astigmatic magnetic deflection field within the tube. The tube has an electron gun for generating and directing three electron beams along paths toward a screen. The gun includes beam-forming region electrodes, main focusing lens electrodes, and two electrodes 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 deflection field on that beam. A first multipole lens electrode is located between the beam forming region electrodes and the main focusing lens electrodes. A second multipole electrode is connected to a main focusing lens electrode and located between the first multipole lens electrode and the main focusing lens, adjacent to the first multipole lens electrode. Means are included for applying a fixed focus voltage to the second multipole lens electrode and a dynamic voltage signal, related to the deflection of the electron beams to the first multipole lens electrode. Each multipole lens is located sufficiently close to the main focusing lens to cause the strength of the main focusing lens to vary as a function of voltage variation of the dynamic voltage signal.

公开(公告)号：ZA8707312B

公开(公告)日：1988-06-29

申请号：ZA8707312

申请日：1987-09-29

Applicant: RCA CORP

Inventor： BLOOM STANLEY ,  STANLEY BLOOM ,  HOCKINGS ERIC FRANCIS ,  ERIC FRANCIS HOCKINGS

IPC: H01J29/48 ,  H01J29/50 ,  H04N9/28 ,  H01J

CPC classification number: H01J29/503 ,  H01J2229/4841 ,  H01J2229/4872

公开(公告)号：BR8705002A

公开(公告)日：1988-05-24

申请号：BR8705002

申请日：1987-09-28

Applicant: RCA CORP

Inventor： BLOOM STANLEY ,  HOCKINGS ERIC FRANCIS

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/56 ,  H04N3/22 ,  H04N9/28

Abstract: A color display system (9) includes a cathode-ray tube (10) and self-converging yoke (30) that produces an astigmatic magnetic deflection field within the tube. The gun (26) includes beam-forming region electrodes (34,36,38,40), main focusing lens electrodes (44,46), and two 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 deflection field on that beam. A first multipole lens electrode (42) is located between the beam-forming region electrodes and the main focusing lens electrodes. A second multipole electrode (44) is connected to a main focusing lens electrode and located between the first multipole lens electrode and the main focusing lens, adjacent to the first multipole lens electrode.

公开(公告)号：DK508887A

公开(公告)日：1988-03-30

申请号：DK508887

申请日：1987-09-28

Applicant: RCA CORP

Inventor： BLOOM STANLEY ,  HOCKINGS ERIC FRANCIS

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/56 ,  H04N3/22 ,  H04N9/28 ,  H01J29/46 ,  H01J31/20 ,  G09G1/28

Abstract: A color display system (9) includes a cathode-ray tube (10) and self-converging yoke (30) that produces an astigmatic magnetic deflection field within the tube. The gun (26) includes beam-forming region electrodes (34,36,38,40), main focusing lens electrodes (44,46), and two 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 deflection field on that beam. A first multipole lens electrode (42) is located between the beam-forming region electrodes and the main focusing lens electrodes. A second multipole electrode (44) is connected to a main focusing lens electrode and located between the first multipole lens electrode and the main focusing lens, adjacent to the first multipole lens electrode.

公开(公告)号：AU6795387A

公开(公告)日：1987-08-13

申请号：AU6795387

申请日：1987-01-23

Applicant: RCA CORP

Inventor： BLOOM STANLEY ,  HOCKINGS ERIC FRANCIS

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/58 ,  H04N3/22 ,  H01J29/56 ,  H01J29/62 ,  H04N9/28

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.

公开(公告)号：DK69087D0

公开(公告)日：1987-02-11

申请号：DK69087

申请日：1987-02-11

Applicant: RCA CORP

Inventor： BLOOM STANLEY ,  HOCKINGS ERIC FRANCIS

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/58 ,  H04N3/22 ,  H01J29/02

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.