GB680404A - Improvements in or relating to screens for producing an electron image which is a replica - Google Patents

Improvements in or relating to screens for producing an electron image which is a replica

Info

Publication number
GB680404A
GB680404A GB1610/51A GB161051A GB680404A GB 680404 A GB680404 A GB 680404A GB 1610/51 A GB1610/51 A GB 1610/51A GB 161051 A GB161051 A GB 161051A GB 680404 A GB680404 A GB 680404A
Authority
GB
United Kingdom
Prior art keywords
screen
layer
heated
tin
glass
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
Application number
GB1610/51A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 International Co filed Critical Westinghouse Electric International Co
Publication of GB680404A publication Critical patent/GB680404A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode
    • H01J29/385—Photocathodes comprising a layer which modified the wave length of impinging radiation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

680,404. Cathode-ray tube. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Jan, 22, 1951, [March 11, 1950], No. 1610/51. Class 39(i) A screen, more particularly for an image intensifier, comprises a layer of fluorescent material, which is carried by a transparent support, and is spaced from a further photoelectric layer by an intermediate conducting transparent layer which is chemically inert to the photoelectric material. The glass envelope of the image intensifier comprises three parts sealed by rings 2 welded to rings 4, 5 of an alloy of nickel, cobalt and iron and clamped together through intermediate gold gaskets by bolts. The aluminium input screen 8 carries a layer of zinc sulphide, which may be embedded in glass, on which is deposited tin oxide or silicon oxide formed by applying the chloride, fluoride, nitrate or sulphate of tin or dibutyltin dichloride to the heated screen e.g. a solution consisting of specified proportions of tin chloride, water, acetone mixed with a concentrated solution of hydrochloric acid sprayed onto the screen at a temperature, e.g. 640‹C. which is higher than that at which maximum conductivity is produced. Alternatively, the heated screen may be sprayed with the vapour of silicon tetrachloride and then heated and cooled in a muffle furnace containing town gas. Alloy caps 11, sealed to tubular extensions 12, carry lead-in wires and supports 9 for the screen 8 and seven focusing electrons 13. Following degassing and exhaustion of the tube, antimony from a capsule is condensed on to the oxide coating followed by caesium from a second capsule axially arranged temporarily in front of the screen. The output screen 7 comprises a glass window internally coated with zinc cadmium sulphide backed by aluminium.
GB1610/51A 1950-03-11 1951-01-22 Improvements in or relating to screens for producing an electron image which is a replica Expired GB680404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US149121A US2606299A (en) 1950-03-11 1950-03-11 Image intensifier tube

Publications (1)

Publication Number Publication Date
GB680404A true GB680404A (en) 1952-10-01

Family

ID=22528885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1610/51A Expired GB680404A (en) 1950-03-11 1951-01-22 Improvements in or relating to screens for producing an electron image which is a replica

Country Status (5)

Country Link
US (1) US2606299A (en)
BE (1) BE501742A (en)
DE (1) DE896396C (en)
FR (1) FR1042774A (en)
GB (1) GB680404A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1030471B (en) * 1954-04-09 1958-05-22 Siemens Ag Process for the production of conductive layers on insulating parts of electrical discharge vessels
DE1042783B (en) * 1955-07-05 1958-11-06 Standard Elektrik Lorenz Ag Electric contact
DE1121232B (en) * 1955-04-30 1962-01-04 Standard Elektrik Lorenz Ag Process for the production of a fluorescent screen for electrical discharge tubes on a non-metallic substrate
FR2406888A1 (en) * 1977-10-24 1979-05-18 Philips Nv IMAGE INTENSIFIER TUBE

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089956A (en) * 1953-07-10 1963-05-14 Westinghouse Electric Corp X-ray fluorescent screen
US2953703A (en) * 1954-06-14 1960-09-20 Westinghouse Electric Corp Photomultiplier design having high response to x-rays
US3005927A (en) * 1958-01-27 1961-10-24 Rca Corp Cathode-ray tubes of the focus-mask variety
NL235656A (en) * 1958-02-03
US2941857A (en) * 1959-06-16 1960-06-21 Rauland Corp Electron discharge device
DE1281056C2 (en) * 1960-02-11 1974-06-20 DIODE IMAGE AMPLIFIER TUBE WITH A RELATIVELY LARGE-AREA PHOTOCATHOD
DE1193182B (en) * 1961-01-14 1965-05-20 Telefunken Patent Image converter or image amplifier tubes and processes for their manufacture
US3697794A (en) * 1969-03-19 1972-10-10 Rca Corp Photocathode comprising layers of tin oxide, antimony oxide, and antimony
US3838273A (en) * 1972-05-30 1974-09-24 Gen Electric X-ray image intensifier input
DE3774746D1 (en) * 1986-04-04 1992-01-09 Toshiba Kawasaki Kk X-RAY RADIATION IMAGE AMPLIFIER.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH203790A (en) * 1937-06-30 1939-03-31 Sueddeutsche Apparate Fabrik G Barrier photocell sensitive to X-rays and other short-wave rays.
US2526574A (en) * 1947-06-14 1950-10-17 Bell Telephone Labor Inc Secondary emitter
US2449493A (en) * 1947-08-28 1948-09-14 Westinghouse Electric Corp Attaining high vacuum in photoelectric tubes
US2523132A (en) * 1949-08-10 1950-09-19 Westinghouse Electric Corp Photosensitive apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1030471B (en) * 1954-04-09 1958-05-22 Siemens Ag Process for the production of conductive layers on insulating parts of electrical discharge vessels
DE1121232B (en) * 1955-04-30 1962-01-04 Standard Elektrik Lorenz Ag Process for the production of a fluorescent screen for electrical discharge tubes on a non-metallic substrate
DE1042783B (en) * 1955-07-05 1958-11-06 Standard Elektrik Lorenz Ag Electric contact
FR2406888A1 (en) * 1977-10-24 1979-05-18 Philips Nv IMAGE INTENSIFIER TUBE

Also Published As

Publication number Publication date
BE501742A (en)
US2606299A (en) 1952-08-05
DE896396C (en) 1953-11-12
FR1042774A (en) 1953-11-03

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