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公开(公告)号：MX3203E
公开(公告)日：1980-07-04
申请号：MX10009975
申请日：1975-10-03
Applicant: RCA CORP
Inventor： RAGLAND FRANK ROWLAND JR
Abstract: The average aperture width in a small area of an apertured member, such as a shadow mask for a cathode-ray tube, is determined by passing a beam of substantially monochromatic light through an area of the member to form an interference pattern, detecting the intensities of at least two light fringes of the interference pattern, generating electrical signals which are representative of the detected intensities and then deriving the average width of apertures in the lit area of the member from the generated signals.
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公开(公告)号：AU8508075A
公开(公告)日：1977-03-31
申请号：AU8508075
申请日：1975-09-23
Applicant: RCA CORP
Inventor： RAGLAND FRANK ROWLAND JR
Abstract: The average aperture width in a small area of an apertured member, such as a shadow mask for a cathode-ray tube, is determined by passing a beam of substantially monochromatic light through an area of the member to form an interference pattern, detecting the intensities of at least two light fringes of the interference pattern, generating electrical signals which are representative of the detected intensities and then deriving the average width of apertures in the lit area of the member from the generated signals.
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公开(公告)号：MX157877A
公开(公告)日：1988-12-19
申请号：MX20262284
申请日：1984-09-05
Applicant: RCA CORP
Inventor： AMATO RALPH JAMES D , GODFREY RICHARD BUGH , MORRELL ALBERT MAXWELL , RAGLAND FRANK ROWLAND JR
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.
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公开(公告)号：IT1174491B
公开(公告)日：1987-07-01
申请号：IT1962784
申请日：1984-02-15
Applicant: RCA CORP
Inventor： RAGLAND FRANK ROWLAND JR
Abstract: A cathode-ray tube includes a shadow mask mounted therein. The mask has curvatures along its major and minor axes. The curvature along the major axis is greater at the sides of the mask than at the center of the mask.
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公开(公告)号：FR2551582B1
公开(公告)日：1993-08-13
申请号：FR8413660
申请日：1984-09-05
Applicant: RCA CORP
Inventor： AMATO RALPH JAMES D , GODFREY RICHARD HUGH , MORRELL ALBERT MAXWELL , RAGLAND FRANK ROWLAND JR
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.
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Patent Agency Ranking
公开(公告)号：FR2550883B1
公开(公告)日：1988-07-29
申请号：FR8412925
申请日：1984-08-17
Applicant: RCA CORP
Inventor： RAGLAND FRANK ROWLAND JR
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.
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公开(公告)号：MX155866A
公开(公告)日：1988-05-13
申请号：MX20045284
申请日：1984-02-24
Applicant: RCA CORP
Inventor： RAGLAND FRANK ROWLAND JR
Abstract: A cathode-ray tube includes a shadow mask mounted therein. The mask has curvatures along its major and minor axes. The curvature along the major axis is greater at the sides of the mask than at the center of the mask.
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公开(公告)号：HK62687A
公开(公告)日：1987-09-04
申请号：HK62687
申请日：1987-08-27
Applicant: RCA CORP
Inventor： RAGLAND FRANK ROWLAND JR
Abstract: A cathode-ray tube includes a shadow mask mounted therein. The mask has curvatures along its major and minor axes. The curvature along the major axis is greater at the sides of the mask than at the center of the mask.
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公开(公告)号：IT8422510D0
公开(公告)日：1984-09-04
申请号：IT2251084
申请日：1984-09-04
Applicant: RCA CORP
Inventor： AMATO RALPH JAMES D , GODFREY RICHARD HUGH , MORREL ALBERT MAXWELL , RAGLAND FRANK ROWLAND JR
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.
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