GB620836A - Improvements in target electrodes for television transmitter tubes - Google Patents

Improvements in target electrodes for television transmitter tubes

Info

Publication number
GB620836A
GB620836A GB33822/45A GB3382245A GB620836A GB 620836 A GB620836 A GB 620836A GB 33822/45 A GB33822/45 A GB 33822/45A GB 3382245 A GB3382245 A GB 3382245A GB 620836 A GB620836 A GB 620836A
Authority
GB
United Kingdom
Prior art keywords
glass
mesh
enamel
wire
group
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
GB33822/45A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB620836A publication Critical patent/GB620836A/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
    • H01J29/39—Charge-storage screens
    • H01J29/41—Charge-storage screens using secondary emission, e.g. for supericonoscope
    • H01J29/413—Charge-storage screens using secondary emission, e.g. for supericonoscope for writing and reading of charge pattern on opposite sides of the target, e.g. for superorthicon

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

620,836. Metal-to-glass seals. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 13, 1945, No. 33822. Convention date, Aug. 16, 1941. Drawings to Specification. [Class 36] [Also in Group XL (a)] A thin imperforate homogeneous sheet of semi-insulating material such as a glass sheet less than 0.0002 inch thick, is sealed to the crimp promontories of a woven wire-mesh screen to form the target electrode for a television transmission tube. The wire-mesh has a coating of enamel which is applied by spraying to a thickness of 0.0001 to 0.0002 inch and then vitrefied by firing. The glass sheet is then supported on the wire-mesh and fired until the softened glass is drawn taut over the enamelled mesh by surface tension. The enamel has a lower softening temperature than the glass and suitable compositions for the enamel and the glass are indicated in the Specification. Specifications 613,003, [Group XL (a)], and 620,843 are referred to.
GB33822/45A 1941-08-16 1945-12-13 Improvements in target electrodes for television transmitter tubes Expired GB620836A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US407132A US2403239A (en) 1941-08-16 1941-08-16 Target electrode for electron discharge tubes

Publications (1)

Publication Number Publication Date
GB620836A true GB620836A (en) 1949-03-31

Family

ID=23610738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33822/45A Expired GB620836A (en) 1941-08-16 1945-12-13 Improvements in target electrodes for television transmitter tubes

Country Status (2)

Country Link
US (1) US2403239A (en)
GB (1) GB620836A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1063203B (en) * 1956-12-26 1959-08-13 Gen Electric Storage electrode for electron beam tubes

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506741A (en) * 1940-09-20 1950-05-09 Rca Corp Television transmitting tube
US2518434A (en) * 1945-07-12 1950-08-08 Emi Ltd Electron discharge device such as a television transmitting tube
US2715183A (en) * 1947-11-25 1955-08-09 Raytheon Mfg Co Electron discharge devices
GB646458A (en) * 1947-12-12 1950-11-22 Cinema Television Ltd Improvements in or relating to cathode ray tubes
US2538836A (en) * 1948-10-15 1951-01-23 Rca Corp Barrier grid storage tube
US2673342A (en) * 1949-12-02 1954-03-23 Eckert Mauchly Comp Corp Demountable chassis
US2617954A (en) * 1950-12-27 1952-11-11 Rca Corp Pickup tube
US2743150A (en) * 1951-06-01 1956-04-24 Rca Corp Glass targets for image orthicons
US2898489A (en) * 1954-10-04 1959-08-04 Rca Corp Targets for television pickup tubes
NL229540A (en) * 1957-07-23
US3249785A (en) * 1963-06-10 1966-05-03 Robert W Floyd Target-screen assembly for television pickup tubes
JPS4813969B1 (en) * 1968-04-14 1973-05-02
US3778666A (en) * 1969-04-07 1973-12-11 Sony Corp Convergence deflecting device for single-gun, plural-beam color picture tube
WO2012019640A1 (en) * 2010-08-10 2012-02-16 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. Silicon photoelectric multiplier with multiple "isochronic" read-out

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1063203B (en) * 1956-12-26 1959-08-13 Gen Electric Storage electrode for electron beam tubes

Also Published As

Publication number Publication date
US2403239A (en) 1946-07-02

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