GB1292966A - Improvements in and relating to electron beam devices - Google Patents

Improvements in and relating to electron beam devices

Info

Publication number
GB1292966A
GB1292966A GB53480/69A GB5348069A GB1292966A GB 1292966 A GB1292966 A GB 1292966A GB 53480/69 A GB53480/69 A GB 53480/69A GB 5348069 A GB5348069 A GB 5348069A GB 1292966 A GB1292966 A GB 1292966A
Authority
GB
United Kingdom
Prior art keywords
electrodes
screen
cathode
elliptical
electron beam
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
GB53480/69A
Inventor
Robert C Jones
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford 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 Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB1292966A publication Critical patent/GB1292966A/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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/123—Flat display tubes
    • H01J31/124—Flat display tubes using electron beam scanning

Landscapes

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

Abstract

1292966 Cathode-ray display tubes PHILCOFORD CORP 31 Oct 1969 [31 Oct 1968] 53480/69 Heading H1D An electron beam device comprises a luminescent screen arranged such that the beam is always at an acute angle to the screen and an electron gun including control and screen electrodes each with elongate apertures 39, 41 to render the beam spot on the screen less elongate. The gun comprises stainless steel cup-shaped electrodes 38, 40, focusing and accelerating electrodes 42, 44 and a thermionic cathode 46 mounted on glass insulating rods 52, 54. The apertures 39, 41 are elliptical or rectangular. The electrodes 42, 44 may also be elliptical and the cathode may emit an electron beam of elliptical cross-section. Electrodes 42, 44 may be replaced by a 3-electrode einzel lens. The screen comprises a phosphor coated with Al. The beam is deflected by pairs of electrostatic plates or electromagnetic coils inside or outside the tube. The device may be a storage tube.
GB53480/69A 1968-10-31 1969-10-31 Improvements in and relating to electron beam devices Expired GB1292966A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77223268A 1968-10-31 1968-10-31

Publications (1)

Publication Number Publication Date
GB1292966A true GB1292966A (en) 1972-10-18

Family

ID=25094388

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53480/69A Expired GB1292966A (en) 1968-10-31 1969-10-31 Improvements in and relating to electron beam devices

Country Status (2)

Country Link
US (1) US3579010A (en)
GB (1) GB1292966A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3344259A1 (en) * 1982-12-08 1984-06-14 Hitachi, Ltd., Tokio/Tokyo CATHODE RAY TUBE VIEWING DEVICE
EP0181463A1 (en) * 1984-09-18 1986-05-21 Sanyo Electric Co., Ltd. Flat colour cathode-ray tube

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2109513A5 (en) * 1970-10-30 1972-05-26 Thomson Csf
NL7203931A (en) * 1972-03-24 1973-09-26
US3984723A (en) * 1974-10-04 1976-10-05 Rca Corporation Display system utilizing beam shape correction
US3952224A (en) * 1974-10-04 1976-04-20 Rca Corporation In-line electron guns having consecutive grids with aligned vertical, substantially elliptical apertures
NL175002C (en) * 1977-11-24 1984-09-03 Philips Nv CATHODE JET TUBE WITH AT LEAST AN ELECTRON GUN.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073638B (en) * 1953-02-19 1960-01-21 Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen Beam generation system for cathode ray tubes with ion trap
NL108855C (en) * 1956-09-07

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3344259A1 (en) * 1982-12-08 1984-06-14 Hitachi, Ltd., Tokio/Tokyo CATHODE RAY TUBE VIEWING DEVICE
GB2133211A (en) * 1982-12-08 1984-07-18 Hitachi Ltd CRT display device
EP0181463A1 (en) * 1984-09-18 1986-05-21 Sanyo Electric Co., Ltd. Flat colour cathode-ray tube

Also Published As

Publication number Publication date
US3579010A (en) 1971-05-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee
PCNP Patent ceased through non-payment of renewal fee