US3650718A - Fusion method for spaced conductive element window - Google Patents

Fusion method for spaced conductive element window Download PDF

Info

Publication number
US3650718A
US3650718A US876767A US3650718DA US3650718A US 3650718 A US3650718 A US 3650718A US 876767 A US876767 A US 876767A US 3650718D A US3650718D A US 3650718DA US 3650718 A US3650718 A US 3650718A
Authority
US
United States
Prior art keywords
window
conductive
conductive elements
tape
conductive coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US876767A
Inventor
Jon W Ogland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of US3650718A publication Critical patent/US3650718A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
    • H01J31/06—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting
    • H01J31/065—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting for electrography or electrophotography, for transferring a charge pattern through the faceplate

Definitions

  • ABSTRACT A display device in which a cathode ray tube envelope is utilized with a plurality of conductive elements extending from the interior surface of the faceplate of the cathode ray to the exterior surface of the cathode ray tube.
  • a high resolution faceplate is provided by fabricating the faceplate in a manner such that the conductive elements are formed on a surface transverse to the inner and outer surfaces of the faceplate and this transverse surface is then formed into the faceplate to provide a vacuum type window.
  • This invention relates generally to a high resolution recorder utilizing an electron beam.
  • the resolving power or data gathering capability of high resolution radar system is considerably better than the capability of the output or recording device.
  • a recording capability of 40 million resolution elements per square inch is needed.
  • the conventional cathode ray tube which utilizes a phosphor screen provides a resolution of about one-half million elements per square inch.
  • the resolution deficiency of the cathode ray tube is not due to the electron beam which can by careful gun design provide a resolution of about 650 million elements per square inch.
  • the deficiency is also not caused by the recording medium, that is, the photographic film which is adjacent the phosphor screen. Degradation occurs in the phosphor layer which converts the electron energy into a light energy.
  • a phosphor layer consists of particles of from 1 to microns in diameter and has a thickness of to microns.
  • the light generated by the impinging electrons is reflected by the many particle surfaces and therefore the light emerging from the faceplate has been scattered laterally as well as forwardly.
  • the spot of light seen by the viewer therefore is considerably larger than the size of the screen actually bombarded by the electrons.
  • the electrons may penetrate more than one particle and suffer similar scattering. Degradation can, at some loss in efficiency, be reduced but not eliminated by using small particle sizes and the thinnest layer compatible with the electron penetration and manufacturin g control.
  • the electrical-to-light conversion is only an auxiliary function.
  • the complete operation is the conversion of an electrical signal to blackening of a photographic film by a chemical reaction.
  • By eliminating this auxiliary conversion and its inherent light scattering better resolution is possible using instead one of the several methods of electrical photography.
  • One process which is well known in the duplicating art is provided wherein an optical image by means of a photoelectric sheet is converted to an image of electrostatic charges which then control the distribution of a fine opaque powder.
  • Another form of electrostatic recording is that in which an electron beam is utilized to deposit an electrical charge by means of embedded wires in a cathode ray tube.
  • the electrons are conducted through the wires to the outside of the tube where they are deposited on the surface of a dielectric coated paper.
  • the paper is sandwiched between the face of the cathode ray tube and a grounded electrode. After the paper receives the electrostatic charge produced by the electron beam, the paper passes through a chamber where the image is developed with powder and then through a heat zone where the powder is fused to the paper.
  • An improved cathode ray tube including a faceplate having a plurality of electrical conductive elements passing through the faceplate and methods of manufacturing the tubes.
  • FIG. 1 is a schematic showing of a system incorporating a high resolution cathode ray tube in accordance with the teachings of this invention
  • FIG. 2 is an enlarged view of a portion of the faceplate of the cathode ray tube illustrated in FIG. 1;
  • FIG. 3 is an enlarged view of a portion of a faceplate that may be incorporated in FIG. 1;
  • FIG. 4 illustrates another possible method of manufacture of a high density conductive element faceplate in accordance with the teachings of this invention.
  • an electrostatic recording system is illustrated incorporating an improved cathode ray tube according to the teachings of this invention.
  • the principal element in this system is the printing tube 10 which includes a cathode ray tube having a row 12 of closely spaced electrical conductive elements 14 extending from the inner surface of the faceplate 16 to the outer surface of the faceplate 16.
  • the conductive elements 14 are insulated from each other.
  • An electron gun 20 is provided in the neck portion of the cathode ray tube 10 and generates an electron beam which scans the row 12 of conductive elements 14 and electrons are conducted through the conductive elements 14 to the outside of the tube where they may be deposited on a dielectric coated film 24.
  • the film 24 is sandwiched between the face 16 of the cathode ray tube 10 and a grounded electrode 26.
  • the scanning speed of the electron beam in the cathode ray tube 10 is of such a speed that the film 24 may be moved continuously across the faceplate.
  • the film 24 receives the electrostatic image produced by the electron beam, it passes through a tone chamber 26.
  • the tone chamber 26 provides a powder onto the film 24 which will adhere to the film 24 in accordance with the electric charge thereon.
  • the film 24 then passes through an infrared fixture 28 which causes permanent adherence of the tone of powder to the film 24.
  • the film 24 may be then fed into any optical processor 29. It is also desirable to recharge the film 24 prior to entering the region of the cathode ray tube 10. This may be accomplished by a corona discharge unit 30 which recharges-the film 24 positively prior to the printing by the cathode ray tube 10.
  • FIG. 2 a sectional view of a portion of the faceplate 16 is illustrated.
  • the faceplate 16 may be manufactured by taking a faceplate and making a diagonal cut and forming two sections 37 and 39 to provide a transverse surface 40 on section 37.
  • a suitable conductive coating of a material such as platinum may be deposited over the entire surface 40.
  • the metal coating is then scribed crosswise to provide a plurality of conductive elements 14.
  • the scribing may be accomplished by using optical grating equipment to provide the plurality of conductive elements 14.
  • the present technology is capable of as many as 2,360 lines per mm.
  • a grating may be scribed on the transverse surface 40 as illustrated in FIG. 3 to provide a V-groove 44.
  • the transverse surface 40 may then be metallized with suitable conductive materials as that utilized in FIG. 2 and thereafter the surface ground down to remove all of the conductive coating except that portion 46 provided within the grooves 44. It is of course obvious that another technique of dividing of the metal coating is to utilize photoresist techniques instead of scribing.
  • a thin metal clad glass ribbon 50 which should be of a thickness equal to the line separation of the raster to be displayed on the CRT. It should also be manageable and of a width to provide adequate strength in the faceplate.
  • a roll of metal clad glass ribbon 50 is shown as item 52.
  • the ribbon 50 includes a glass layer 51, a metal layer 53 and a photoresist layer 55. This roll of material is fed to a position where it is exposed by a projection source 54.
  • the source 54 may include a mask to provide a plurality of strips of illumination as shown.
  • the photoresist coating 55 on exposure to illumination from the projector 54 either causes the material to become soluble or insoluble when treated within a suitable etching chamber 56.
  • the metal clad ribbon 50 will have a plurality of conductive elements 59 as illustrated in FIG. 2 continuously along the tape 50.
  • the tape 50 is wound into a roll 58 and the roll 58 will then be sealed in an oven to provide a vacuum tight window.
  • the resulting block ofinsulating material 57 with the conductive elements 59 passing through may be sliced in any desired manner to provide a number of faceplates of desired thicknesses and diameter.
  • the method of manufacturing a high density electrical conductive feed through vacuum tight window of insulating material having a plurality of spaced conductive elements extending through said window comprising the steps separating said window into a first and second portion, said first portion having a transverse surface to the inner and outer surface of said window, providing a coating of electrical conductive material on said transverse surface, removing portions of said conductive coating to provide said plurality of spaced conductive elements extending across said transverse surface between said inner and outer surface of said window and securing said first and second portion of said window together at said transverse surface to provide a vacuum tight window.
  • the method of manufacturing a high density electrical conductive feed through vacuum tight window of insulating material having a plurality of spaced conductive elements extending through said window comprising the steps of forming a tape of insulating material having a conductive coating on at least one side of said tape, removing portions of said conductive coating to provide said plurality of spaced conductive elements extending between the edges of said tape on one surface of said tape, winding said tape in a roll and then treating said roll to provide a vacuum tight window in which said edges of said tape provide the inner and outer surface of said window and said conductive elements extend between said inner and outer surfaces of said window.

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

A display device in which a cathode ray tube envelope is utilized with a plurality of conductive elements extending from the interior surface of the faceplate of the cathode ray to the exterior surface of the cathode ray tube. A high resolution faceplate is provided by fabricating the faceplate in a manner such that the conductive elements are formed on a surface transverse to the inner and outer surfaces of the faceplate and this transverse surface is then formed into the faceplate to provide a vacuum type window.

Description

nited States Patent Dgland Mar. 21, 11972 [54] FUSION METHOD FOR SPACED CONDUCTIVE ELEMENT WINDOW [72] lnventor: Jon W. Ogland, Glen Burnie, Md.
[73] Assignee: Westinghouse Electric Corporation, Pittsburgh, Pa.
[22] Filed: Nov. 14, 1969 [21] Appl. No.: 876,767
52 U.S.Cl ..65/23,65/30,65/3l, 65/37, 65 42, 65/59, 65/155 51 Int. Cl. .7003619/00, C 03 29/0 0 QQQC 1 5/90 [58] FieldofSearch ..65/31,DIG.7,59,60,61, 65 23, 37, 42, 155
[56] References Cited UNITED STATES PATENTS 2,189,340 2/1940 Donal,Jr. ..65/61X 2,721,952 10/1955 Kenyon ..65/31X 2,749,794 6/1956 OLeary .,65/31X 2,825,l84 3/1958 Charlotte ..65/6l X 2,992,586 7/1961 Upton ..65/6l X 3,222,615 12/1965 Holly.... 65/DIG 7 3,237,039 2/1966 Fyler..... 65/DIG 7 3,284,878 11/1966 Best ..65/6l X 3,305,334 2/1967 Fyler ..65/3l X Primary Examiner-Frank W. Miga Attorney-4 H. Henson and C. F. Renz [5 7] ABSTRACT A display device in which a cathode ray tube envelope is utilized with a plurality of conductive elements extending from the interior surface of the faceplate of the cathode ray to the exterior surface of the cathode ray tube. A high resolution faceplate is provided by fabricating the faceplate in a manner such that the conductive elements are formed on a surface transverse to the inner and outer surfaces of the faceplate and this transverse surface is then formed into the faceplate to provide a vacuum type window.
6 Claims, 4 Drawing Figures Patented March 21, 1972 3,650,718
' 2 Sheets-Sheet 1 FIG. I.
WITNESSES INVENTOR 3% 5 Jon w. Oglond ATTORNEY Patented March 21, 1972 2 She ets-Shee; 2
FIG.4.
FUSION METHOD FOR SPACED CONDUCTIVE ELEMENT WINDOW BACKGROUND OF THE INVENTION This invention relates generally to a high resolution recorder utilizing an electron beam. The resolving power or data gathering capability of high resolution radar system is considerably better than the capability of the output or recording device. To match the capability of the radar system, a recording capability of 40 million resolution elements per square inch is needed. The conventional cathode ray tube which utilizes a phosphor screen provides a resolution of about one-half million elements per square inch. The resolution deficiency of the cathode ray tube is not due to the electron beam which can by careful gun design provide a resolution of about 650 million elements per square inch. The deficiency is also not caused by the recording medium, that is, the photographic film which is adjacent the phosphor screen. Degradation occurs in the phosphor layer which converts the electron energy into a light energy.
A phosphor layer consists of particles of from 1 to microns in diameter and has a thickness of to microns. The light generated by the impinging electrons is reflected by the many particle surfaces and therefore the light emerging from the faceplate has been scattered laterally as well as forwardly. The
spot of light seen by the viewer therefore is considerably larger than the size of the screen actually bombarded by the electrons. Furthermore, at high voltages, the electrons may penetrate more than one particle and suffer similar scattering. Degradation can, at some loss in efficiency, be reduced but not eliminated by using small particle sizes and the thinnest layer compatible with the electron penetration and manufacturin g control.
In a cathode ray film recorder device, the electrical-to-light conversion is only an auxiliary function. The complete operation is the conversion of an electrical signal to blackening of a photographic film by a chemical reaction. By eliminating this auxiliary conversion and its inherent light scattering, better resolution is possible using instead one of the several methods of electrical photography. One process which is well known in the duplicating art is provided wherein an optical image by means of a photoelectric sheet is converted to an image of electrostatic charges which then control the distribution of a fine opaque powder. Another form of electrostatic recording is that in which an electron beam is utilized to deposit an electrical charge by means of embedded wires in a cathode ray tube. As the electron beam sweeps across the inner end of the rows of wires, the electrons are conducted through the wires to the outside of the tube where they are deposited on the surface of a dielectric coated paper. The paper is sandwiched between the face of the cathode ray tube and a grounded electrode. After the paper receives the electrostatic charge produced by the electron beam, the paper passes through a chamber where the image is developed with powder and then through a heat zone where the powder is fused to the paper. It is to this general type of system that the applicants invention is directed and more particularly is directed to the means and methods of providing a high resolution system utilizing a large number of conductive elements between the inner surface of the faceplate and the outer surface of the faceplate to provide a high resolution conductive element faceplate.
SUMMARY OF THE INVENTION An improved cathode ray tube including a faceplate having a plurality of electrical conductive elements passing through the faceplate and methods of manufacturing the tubes.
DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic showing of a system incorporating a high resolution cathode ray tube in accordance with the teachings of this invention;
FIG. 2 is an enlarged view of a portion of the faceplate of the cathode ray tube illustrated in FIG. 1;
FIG. 3 is an enlarged view of a portion of a faceplate that may be incorporated in FIG. 1; and
FIG. 4 illustrates another possible method of manufacture of a high density conductive element faceplate in accordance with the teachings of this invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIG. 1, an electrostatic recording system is illustrated incorporating an improved cathode ray tube according to the teachings of this invention. The principal element in this system is the printing tube 10 which includes a cathode ray tube having a row 12 of closely spaced electrical conductive elements 14 extending from the inner surface of the faceplate 16 to the outer surface of the faceplate 16. The conductive elements 14 are insulated from each other. An electron gun 20 is provided in the neck portion of the cathode ray tube 10 and generates an electron beam which scans the row 12 of conductive elements 14 and electrons are conducted through the conductive elements 14 to the outside of the tube where they may be deposited on a dielectric coated film 24. The film 24 is sandwiched between the face 16 of the cathode ray tube 10 and a grounded electrode 26. The scanning speed of the electron beam in the cathode ray tube 10 is of such a speed that the film 24 may be moved continuously across the faceplate. After the film 24 receives the electrostatic image produced by the electron beam, it passes through a tone chamber 26. The tone chamber 26 provides a powder onto the film 24 which will adhere to the film 24 in accordance with the electric charge thereon. The film 24 then passes through an infrared fixture 28 which causes permanent adherence of the tone of powder to the film 24. The film 24 may be then fed into any optical processor 29. It is also desirable to recharge the film 24 prior to entering the region of the cathode ray tube 10. This may be accomplished by a corona discharge unit 30 which recharges-the film 24 positively prior to the printing by the cathode ray tube 10.
In FIG. 2, a sectional view of a portion of the faceplate 16 is illustrated. The faceplate 16 may be manufactured by taking a faceplate and making a diagonal cut and forming two sections 37 and 39 to provide a transverse surface 40 on section 37. A suitable conductive coating of a material such as platinum may be deposited over the entire surface 40. The metal coating is then scribed crosswise to provide a plurality of conductive elements 14. The scribing may be accomplished by using optical grating equipment to provide the plurality of conductive elements 14. The present technology is capable of as many as 2,360 lines per mm. After scribing the metal coating into the row 14 of extremely fine conductors 14 along the transverse surface 40, the two sections 37 and 39 of the faceplate 16 are sealed together by a suitable sealing glass frit 41 to provide an integral vacuum tight faceplate.
Instead of scribing through a metal coating such as illustrated in FIG. 2, a grating may be scribed on the transverse surface 40 as illustrated in FIG. 3 to provide a V-groove 44. The transverse surface 40 may then be metallized with suitable conductive materials as that utilized in FIG. 2 and thereafter the surface ground down to remove all of the conductive coating except that portion 46 provided within the grooves 44. It is of course obvious that another technique of dividing of the metal coating is to utilize photoresist techniques instead of scribing.
To produce a faceplate with a full matrix of feed throughs across the entire surface, one possible technique is to provide a thin metal clad glass ribbon 50 which should be of a thickness equal to the line separation of the raster to be displayed on the CRT. It should also be manageable and of a width to provide adequate strength in the faceplate. As illustrated in FIG. 4, a roll of metal clad glass ribbon 50 is shown as item 52. The ribbon 50 includes a glass layer 51, a metal layer 53 and a photoresist layer 55. This roll of material is fed to a position where it is exposed by a projection source 54. The source 54 may include a mask to provide a plurality of strips of illumination as shown. The photoresist coating 55 on exposure to illumination from the projector 54 either causes the material to become soluble or insoluble when treated within a suitable etching chamber 56. After passing through the etching chamber 56, the metal clad ribbon 50 will have a plurality of conductive elements 59 as illustrated in FIG. 2 continuously along the tape 50. The tape 50 is wound into a roll 58 and the roll 58 will then be sealed in an oven to provide a vacuum tight window. The resulting block ofinsulating material 57 with the conductive elements 59 passing through may be sliced in any desired manner to provide a number of faceplates of desired thicknesses and diameter.
It is obvious that other methods and structures may be utilized within the teachings of this invention.
I claim:
1. The method of manufacturing a high density electrical conductive feed through vacuum tight window of insulating material having a plurality of spaced conductive elements extending through said window comprising the steps separating said window into a first and second portion, said first portion having a transverse surface to the inner and outer surface of said window, providing a coating of electrical conductive material on said transverse surface, removing portions of said conductive coating to provide said plurality of spaced conductive elements extending across said transverse surface between said inner and outer surface of said window and securing said first and second portion of said window together at said transverse surface to provide a vacuum tight window.
2. The method of manufacturing a high density electrical conductive feed through vacuum tight window of insulating material having a plurality of spaced conductive elements extending through said window comprising the steps of forming a tape of insulating material having a conductive coating on at least one side of said tape, removing portions of said conductive coating to provide said plurality of spaced conductive elements extending between the edges of said tape on one surface of said tape, winding said tape in a roll and then treating said roll to provide a vacuum tight window in which said edges of said tape provide the inner and outer surface of said window and said conductive elements extend between said inner and outer surfaces of said window.
3 The method set forth in claim 2 in which said conductive elements are provided on said tape by providing a conductive coating of material on at least one surface of said tape and coating said conductive coating with a photoresist material, exposing said conductive coating to radiations of a predetermined pattern and then removing selected portions of said photoresist material, etching away the exposed conductive coating and then removing the photoresist coating from the remaining conductive elements.
4. The method of manufacturing a high density electrical feed through vacuum tight window of insulating material having a plurality of spaced conductive elements extending through said window comprising the steps of separating said window into a first and second portion, said first portion having a transverse surface, providing a conductive coating on said transverse surface extending between the inner and outer surface of said window portion, removing selected portions of said conductive coating to provide said plurality of spaced conductive elements and sealing said first portion to said second portion of said window at said transverse surface to provide a vacuum tight window.
5. The method set forth in claim 4 in which said conductive elements are provided on said transverse surface by scribing away a portion of said transverse surface and providing a conductive coating over said transverse surface and then removing the conductive coating from the transverse surface other than the scribed portion thereof.
6. The method set forth in claim 4 in which said conductive elements are provided on said transverse surface by providing a conductive coating on said transverse surface and then scribing away portions of said conductive coating to provide said plurality of spaced conductive elements extending between said inner and outer surgace of aid wir dow.

Claims (5)

  1. 2. The method of manufacturing a high density electrical conductive feed through vacuum tight window of insulating material having a plurality of spaced conductive elements extending through said window comprising the steps of forming a tape of insulating material having a conductive coating on at least one side of said tape, removing portions of said conductive coating to provide said plurality of spaced conductive elements extending between the edges of said tape on one surface of said tape, winding said tape in a roll and then treating said roll to provide a vacuum tight window in which said edges of said tape provide the inner and outer surface of said window and said conductive elements extend between said inner and outer surfaces of said window.
  2. 3. The method set forth in claim 2 in which said conductive elements are provided on said tape by providing a conductive coating of material on at least One surface of said tape and coating said conductive coating with a photoresist material, exposing said conductive coating to radiations of a predetermined pattern and then removing selected portions of said photoresist material, etching away the exposed conductive coating and then removing the photoresist coating from the remaining conductive elements.
  3. 4. The method of manufacturing a high density electrical feed through vacuum tight window of insulating material having a plurality of spaced conductive elements extending through said window comprising the steps of separating said window into a first and second portion, said first portion having a transverse surface, providing a conductive coating on said transverse surface extending between the inner and outer surface of said window portion, removing selected portions of said conductive coating to provide said plurality of spaced conductive elements and sealing said first portion to said second portion of said window at said transverse surface to provide a vacuum tight window.
  4. 5. The method set forth in claim 4 in which said conductive elements are provided on said transverse surface by scribing away a portion of said transverse surface and providing a conductive coating over said transverse surface and then removing the conductive coating from the transverse surface other than the scribed portion thereof.
  5. 6. The method set forth in claim 4 in which said conductive elements are provided on said transverse surface by providing a conductive coating on said transverse surface and then scribing away portions of said conductive coating to provide said plurality of spaced conductive elements extending between said inner and outer surface of said window.
US876767A 1969-11-14 1969-11-14 Fusion method for spaced conductive element window Expired - Lifetime US3650718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87676769A 1969-11-14 1969-11-14

Publications (1)

Publication Number Publication Date
US3650718A true US3650718A (en) 1972-03-21

Family

ID=25368531

Family Applications (1)

Application Number Title Priority Date Filing Date
US876767A Expired - Lifetime US3650718A (en) 1969-11-14 1969-11-14 Fusion method for spaced conductive element window

Country Status (1)

Country Link
US (1) US3650718A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832723A (en) * 1988-02-16 1989-05-23 Manville Corporation Apparatus for producing desired fiber column configuration
US5017419A (en) * 1989-04-13 1991-05-21 Chomerics, Inc. Non-moire shielded window
US5084132A (en) * 1989-04-13 1992-01-28 Chomerics, Inc. Non-moire' shielded window forming method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2189340A (en) * 1938-03-31 1940-02-06 Rca Corp Mosaic electrode manufacture
US2721952A (en) * 1952-05-14 1955-10-25 Sperry Rand Corp Grid structure and the process of making
US2749794A (en) * 1953-04-24 1956-06-12 Corning Glass Works Illuminating glassware and method of making it
US2825184A (en) * 1956-12-28 1958-03-04 Charlotte Hubert Frank Method of making cathode ray tube screen
US2992586A (en) * 1958-03-05 1961-07-18 American Optical Corp Multiple path light-conducting devices and method and apparatus for making same
US3222615A (en) * 1961-10-10 1965-12-07 Ibm Cylindrical lasers utilizing internal reflection techniques
US3237039A (en) * 1961-04-17 1966-02-22 Litton Prec Products Inc Cathode ray tube using fiber optics faceplate
US3284878A (en) * 1963-12-09 1966-11-15 Corning Glass Works Method of forming thin film resistors
US3305334A (en) * 1960-03-22 1967-02-21 Litton Prec Products Inc Method of making a glass sheet having a plurality of spaced wires therein

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2189340A (en) * 1938-03-31 1940-02-06 Rca Corp Mosaic electrode manufacture
US2721952A (en) * 1952-05-14 1955-10-25 Sperry Rand Corp Grid structure and the process of making
US2749794A (en) * 1953-04-24 1956-06-12 Corning Glass Works Illuminating glassware and method of making it
US2825184A (en) * 1956-12-28 1958-03-04 Charlotte Hubert Frank Method of making cathode ray tube screen
US2992586A (en) * 1958-03-05 1961-07-18 American Optical Corp Multiple path light-conducting devices and method and apparatus for making same
US3305334A (en) * 1960-03-22 1967-02-21 Litton Prec Products Inc Method of making a glass sheet having a plurality of spaced wires therein
US3237039A (en) * 1961-04-17 1966-02-22 Litton Prec Products Inc Cathode ray tube using fiber optics faceplate
US3222615A (en) * 1961-10-10 1965-12-07 Ibm Cylindrical lasers utilizing internal reflection techniques
US3284878A (en) * 1963-12-09 1966-11-15 Corning Glass Works Method of forming thin film resistors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832723A (en) * 1988-02-16 1989-05-23 Manville Corporation Apparatus for producing desired fiber column configuration
US5017419A (en) * 1989-04-13 1991-05-21 Chomerics, Inc. Non-moire shielded window
US5084132A (en) * 1989-04-13 1992-01-28 Chomerics, Inc. Non-moire' shielded window forming method

Similar Documents

Publication Publication Date Title
US5739522A (en) Flat panel detector and image sensor with means for columating and focusing electron beams
US3089956A (en) X-ray fluorescent screen
US3940620A (en) Electrostatic recording of X-ray images
US3914634A (en) Channel plate acting as discrete secondary-emissive dynodes
US2045984A (en) Photoelectric device
US3928784A (en) Television camera tube with control diaphragm
US2945973A (en) Image device
US2256300A (en) Device applicable mainly to television
US3603828A (en) X-ray image intensifier tube with secondary emission multiplier tunnels constructed to confine the x-rays to individual tunnels
US3650718A (en) Fusion method for spaced conductive element window
US2717971A (en) Device for storage of images of invisible radiation
US2100259A (en) Television
US2500633A (en) Apparatus for reproducing radiolocation intelligence at a remote point
US2195489A (en) Television transmitting tube
US3461332A (en) Vacuum tubes with a curved electron image intensifying device
GB2202367A (en) Channel plate electron multipliers
US2970219A (en) Use of thin film field emitters in luminographs and image intensifiers
US3223872A (en) Color screen with electron- and lightabsorptive material separating adjacent color strips
US2146822A (en) Television
US2617058A (en) Television transmitting tube
US2314648A (en) Television transmitting and the like system
US2963604A (en) Television camera tubes
US2938141A (en) Photothermionic image converter with retarding fields
US3994000A (en) Device for electrostatographic reproduction of an optical image using a charge storage grid
US2324504A (en) Television transmitting system