公开(公告)号：US3221203A

公开(公告)日：1965-11-30

申请号：US19940462

申请日：1962-06-01

Applicant: RCA CORP

Inventor： RAGLAND JR FRANK ROWLAND

IPC: H01J1/24

CPC classification number: H01J1/24

公开(公告)号：FI793386A

公开(公告)日：1980-05-07

申请号：FI793386

申请日：1979-10-30

Applicant: RCA CORP

Inventor： RAGLAND JR FRANK ROWLAND

IPC: H01J29/76 ,  H01F3/12 ,  H01F7/02 ,  H01J29/70 ,  H01J

公开(公告)号：IT1174057B

公开(公告)日：1987-07-01

申请号：IT1962884

申请日：1984-02-15

Applicant: RCA CORP

Inventor： RAGLAND JR FRANK ROWLAND

IPC: H01J29/86 ,  H01T

Abstract: A cathode-ray tube includes a rectangular faceplate which has an exterior surface having curvature along both the minor and major axes. The exterior surface of the faceplate includes a rectangular contour near its periphery which substantially lies in a plane which is perpendicular to the central longitudinal axis of the tube.

公开(公告)号：GB2179786A

公开(公告)日：1987-03-11

申请号：GB8623349

申请日：1986-09-29

Applicant: RCA CORP

Inventor： RAGLAND JR FRANK ROWLAND

IPC: H01J9/227

Abstract: The present invention is an improvement in a method of screening a line screen slit mask color picture tube. Such method includes coating a faceplate panel of the tube with a photosensitive material, inserting a slit shadow mask into the panel and exposing the photosensitive material by passing light from a line light source through the slits of the mask. The improvement comprises positioning a generally cylindrical shaped lens between the line light source and the faceplate panel during exposure of the photosensitive material. The longitudinal axis of the lens is oriented perpendicular to the longitudinal axis of the line light source. Because of the presence of the lens, the images of the line light source projected through the slits of the mask onto the photosensitive material at locations off the major and minor axes of the panel are rotated toward parallelism with the minor axis thereby resulting in exposure of straight smooth lines on the photosensitive material.

公开(公告)号：GB2179786B

公开(公告)日：1987-09-09

申请号：GB8623349

申请日：1986-09-29

Applicant: RCA CORP

Inventor： RAGLAND JR FRANK ROWLAND

IPC: H01J9/227

Abstract: The present invention is an improvement in a method of screening a line screen slit mask color picture tube. Such method includes coating a faceplate panel of the tube with a photosensitive material, inserting a slit shadow mask into the panel and exposing the photosensitive material by passing light from a line light source through the slits of the mask. The improvement comprises positioning a generally cylindrical shaped lens between the line light source and the faceplate panel during exposure of the photosensitive material. The longitudinal axis of the lens is oriented perpendicular to the longitudinal axis of the line light source. Because of the presence of the lens, the images of the line light source projected through the slits of the mask onto the photosensitive material at locations off the major and minor axes of the panel are rotated toward parallelism with the minor axis thereby resulting in exposure of straight smooth lines on the photosensitive material.

公开(公告)号：IT1176642B

公开(公告)日：1987-08-18

申请号：IT2251084

申请日：1984-09-04

Applicant: RCA CORP

Inventor： D AMATO RALPH JAMES ,  GODFREY RICHARD HUGH ,  MORREL ALBERT MAXWELL ,  RAGLAND JR FRANK ROWLAND

IPC: H01J29/86 ,  H04N5/64 ,  H01J

Abstract: Improvement is provided in the appearance of a color picture type cathode-ray tube including rectangular faceplate with an exterior surface having curvature along both the minor (Y-Y) and major (X-X) axes. At least in the center portion of the faceplate, the curvature along the minor axis is at least 10 percent greater than the curvature along the major axis. Points on the exterior surface near the ends of the major axis, at the edges of the screen, lie in a first plane (P1) perpendicular to the central axis (Z-Z) of the tube; points on the exterior surface near the ends of the minor axis, at the edges of the screen, lie in a second plane (P2) which is spaced from and parallel to the first plane; and points on the exterior surface near the ends of the diagonals of the rectangular faceplate, at the edges of the screen, lie in a third plane (P3) which is spaced from and parallel to the first plane. The three planes are spaced from the center portion of the faceplate in the order of second plane, first plane and third plane. Further relative dimensions are detailed.