公开(公告)号：US3927341A

公开(公告)日：1975-12-16

申请号：US17915471

申请日：1971-09-09

Applicant: RCA CORP

Inventor： HUGHES RICHARD HENRY

IPC: H01J29/50 ,  H01J29/51 ,  H01J31/20

CPC classification number: H01J29/506

Abstract: A conventional three-gun assembly for a color cathode ray tube is modified by eliminating the usual radial convergence cup, mounting the radial convergence pole pieces on the forward ends of the last focus electrodes, and providing each gun with a combination magnetic shield and electrode support member in the form of an open frame of magnetic metal mounted on the insulator support rods and having one side attached to the last focus electrode, an opposite side shielding the associated pole pieces from the other pole pieces, and two other connecting sides. The last focus electrode may be one of two tubular electrodes of small diameter having outwardly-flared ends adjacent to each other.

Abstract translation: 用于彩色阴极射线管的常规三枪组件通过消除通常的径向会聚杯而改变，将径向会聚极片安装在最后聚焦电极的前端上，并为每个枪提供组合磁屏蔽和电极支撑 安装在绝缘体支撑杆上的开放的磁性金属框架形式的构件，并且具有连接到最后一个聚焦电极的一侧，相对的侧面将相关联的极片与另一个极片以及另外两个连接侧相屏蔽。 最后的聚焦电极可以是两个小直径的管状电极之一，其具有彼此相邻的向外扩展的端部。

公开(公告)号：US3873879A

公开(公告)日：1975-03-25

申请号：US34566573

申请日：1973-03-28

Applicant: RCA CORP

Inventor： HUGHES RICHARD HENRY

IPC: H01J29/50 ,  H01J29/51

CPC classification number: H01J29/51 ,  H01J29/50 ,  H01J2229/581 ,  H01J2229/5835

Abstract: The three co-planar beams of an in-line gun are converged near the screen of a cathode ray tube by means of two plate-like grids transverse to the beam paths and having corresponding apertures for the three beams. The three beam apertures of the first grid are aligned with the three beam paths. The two outer beam apertures of the second grid are offset outwardly relative to the beam paths to produce the desired convergence. The three sets of apertures also provide separate focusing fields for the three beams. The second plate-like grid is formed with a barrel shape, concave toward the first grid, to minimize elliptical distortion of beam spots on the screen due to crowding of the adjacent focusing fields. Each of the two outer beams is partially shielded from the magnetic flux of the deflecting yoke by means of a magnetic ring surrounding the beam path in the deflection zone, to equalize the size of the rasters scanned on the screen by the middle and outer beams. Other magnetic pieces are positioned on opposite sides of the path of the middle beam, to enhance one deflection field while reducing the transverse deflection field for that beam.

Abstract translation: 直列式枪的三个共面光束通过横向于光束路径的两个板状栅格会聚在阴极射线管的屏幕附近，并且具有用于三个光束的对应的孔。 第一格栅的三个光束孔径与三个光束路径对准。 第二格栅的两个外光束孔径相对于光束路径向外偏移以产生期望的会聚。 三组孔也为三个梁提供单独的聚焦场。 第二板状栅格形成有朝向第一栅格凹陷的桶形状，以使由于相邻聚焦场的拥挤而使屏幕上的光斑的椭圆形失真最小化。 两个外梁中的每一个通过围绕偏转区域中的光束路径的磁环而部分地屏蔽偏转磁轭的磁通量，以平衡通过中间和外侧光束在屏幕上扫描的光栅的尺寸。 其他磁性片位于中间梁的路径的相对侧上，以增强一个偏转场，同时减小该横梁的横向偏转场。

公开(公告)号：HK62287A

公开(公告)日：1987-09-04

申请号：HK62287

申请日：1987-08-27

Applicant: RCA CORP

Inventor： CHEN HSING-YAO ,  HUGHES RICHARD HENRY

IPC: H01J29/50 ,  H01J29/48 ,  H01J29/51 ,  H01J29/56 ,  H01J29/46

Abstract: The gun, for use in a television picture tube, comprises a cathode, an apertured control grid, and an apertured screen grid aligned in the order named. The screen grid aperture comprises a rectangular slot portion facing the control grid and a circular portion facing away from the control grid. The slot portion of the aperture, which has a width 2-5 times its depth, creates an astigmatic field that produces underconvergence of the electron beam in the vertical plane only, whereby to avoid and/or compensate for vertical flare distortion of the beam spot at off-center positions on the image screen.

公开(公告)号：FI70344C

公开(公告)日：1986-09-15

申请号：FI813309

申请日：1981-10-22

Applicant: RCA CORP

Inventor： HUGHES RICHARD HENRY ,  MARKS BRUCE GEORGE

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

Abstract: The present invention relates to an improvement in a color picture tube having an inline electron gun, for generating and directing a plurality of electron beams along coplanar paths toward a screen of the tube. The gun includes a main focus lens for focusing the electron beams. The improvement comprises a change in the two spaced gun electrodes that form the main focus lens. Each electrode includes a plurality of apertures therein equal to the number of electron beams. Each electrode also includes a peripheral rim with the peripheral rims of the two electrodes facing each other. The apertured portion of each electrode is located within a recess set back from the rim. The recess has substantially straight wall sections parallel to the paths of the electron beams.

公开(公告)号：BR8203963A

公开(公告)日：1983-06-28

申请号：BR8203963

申请日：1982-07-08

Applicant: RCA CORP

Inventor： CHEN HSING YAO ,  HUGHES RICHARD HENRY

IPC: H01J29/48 ,  H01J29/46 ,  H01J29/50 ,  H01J29/62 ,  H04N9/28

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：GB2101805A

公开(公告)日：1983-01-19

申请号：GB8219510

申请日：1982-07-06

Applicant: RCA CORP

Inventor： HUGHES RICHARD HENRY ,  CHEN HSING-YAO

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

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：MX4724E

公开(公告)日：1982-08-13

申请号：MX10078079

申请日：1979-02-22

Applicant: RCA CORP

Inventor： HUGHES RICHARD HENRY

IPC: H04N9/47

公开(公告)号：MX146490A

公开(公告)日：1982-07-01

申请号：MX17918279

申请日：1979-09-05

Applicant: RCA CORP

Inventor： HSING YAO CHEN ,  HUGHES RICHARD HENRY

IPC: H01J29/50 ,  H01J29/48 ,  H01J29/51 ,  H01J29/56 ,  H01J31/18

Abstract: The gun, for use in a television picture tube, comprises a cathode, an apertured control grid, and an apertured screen grid aligned in the order named. The screen grid aperture comprises a rectangular slot portion facing the control grid and a circular portion facing away from the control grid. The slot portion of the aperture, which has a width 2-5 times its depth, creates an astigmatic field that produces underconvergence of the electron beam in the vertical plane only, whereby to avoid and/or compensate for vertical flare distortion of the beam spot at off-center positions on the image screen.

公开(公告)号：DE2914838A1

公开(公告)日：1979-10-18

申请号：DE2914838

申请日：1979-04-11

Applicant: RCA CORP

Inventor： HUGHES RICHARD HENRY ,  CHEN HSING-YAO

IPC: H01J3/02 ,  H01J21/06 ,  H01J29/48 ,  H01J29/50 ,  H01J29/62

公开(公告)号：IT7925940D0

公开(公告)日：1979-09-21

申请号：IT2594079

申请日：1979-09-21

Applicant: RCA CORP

Inventor： CHEN HSING-YAO ,  HUGHES RICHARD HENRY

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

Abstract: The gun, for use in a television picture tube, comprises a cathode, an apertured control grid, and an apertured screen grid aligned in the order named. The screen grid aperture comprises a rectangular slot portion facing the control grid and a circular portion facing away from the control grid. The slot portion of the aperture, which has a width 2-5 times its depth, creates an astigmatic field that produces underconvergence of the electron beam in the vertical plane only, whereby to avoid and/or compensate for vertical flare distortion of the beam spot at off-center positions on the image screen.