GB518574A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB518574A
GB518574A GB24625/38A GB2462538A GB518574A GB 518574 A GB518574 A GB 518574A GB 24625/38 A GB24625/38 A GB 24625/38A GB 2462538 A GB2462538 A GB 2462538A GB 518574 A GB518574 A GB 518574A
Authority
GB
United Kingdom
Prior art keywords
ray tubes
relating
cathode ray
cathode
aug
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
GB24625/38A
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 GB518574A publication Critical patent/GB518574A/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

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Abstract

518,574. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 22, 1938, No. 24625. Convention date, Aug. 20, 1937. Class 39 (i)] The modulating electrode 18 has a part surrounding and coplanar with the emission area of the cathode 12. The part may be an annular diaphragm within the cylindrical electrode; the end 19 of the cylinder then projects towards the anode 21 and may contain a conical part 20.
GB24625/38A 1937-08-20 1938-08-22 Improvements in or relating to cathode ray tubes Expired GB518574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US160009A US2202631A (en) 1937-08-20 1937-08-20 Cathode ray tube

Publications (1)

Publication Number Publication Date
GB518574A true GB518574A (en) 1940-03-01

Family

ID=22575089

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24625/38A Expired GB518574A (en) 1937-08-20 1938-08-22 Improvements in or relating to cathode ray tubes

Country Status (2)

Country Link
US (1) US2202631A (en)
GB (1) GB518574A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL83700C (en) * 1942-03-24
US3046442A (en) * 1959-12-18 1962-07-24 Gen Electric High perveance beam forming system
US5159240A (en) * 1991-12-09 1992-10-27 Chunghwa Picture Tubes, Ltd. Low voltage limiting aperture electron gun
US5220239A (en) * 1991-12-09 1993-06-15 Chunghwa Picture Tubes, Ltd. High density electron beam generated by low voltage limiting aperture gun
US5223764A (en) * 1991-12-09 1993-06-29 Chunghwa Picture Tubes, Ltd. Electron gun with low voltage limiting aperture main lens
US5327044A (en) * 1992-04-27 1994-07-05 Chunghwa Picture Tubes, Ltd. Electron beam deflection lens for CRT
US5204585A (en) * 1992-04-27 1993-04-20 Chen Hsing Yao Electron beam deflection lens for color CRT
US5182492A (en) * 1992-05-20 1993-01-26 Chunghwa Picture Tubes, Ltd. Electron beam shaping aperture in low voltage, field-free region of electron gun

Also Published As

Publication number Publication date
US2202631A (en) 1940-05-28

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