GB549476A - Improvements in or relating to cathode ray tubes having an electrostatic projection lens and devices comprising such tubes - Google Patents

Improvements in or relating to cathode ray tubes having an electrostatic projection lens and devices comprising such tubes

Info

Publication number
GB549476A
GB549476A GB12155/41A GB1215541A GB549476A GB 549476 A GB549476 A GB 549476A GB 12155/41 A GB12155/41 A GB 12155/41A GB 1215541 A GB1215541 A GB 1215541A GB 549476 A GB549476 A GB 549476A
Authority
GB
United Kingdom
Prior art keywords
tubes
relating
devices
cathode ray
projection lens
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
GB12155/41A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB549476A publication Critical patent/GB549476A/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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
    • H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
    • 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
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • 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
    • H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Pyridine Compounds (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

549,476. Cathode-ray tubes. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Sept. 19, 1941, No. 12155. Drawings to Specification. [Class 39 (i)] The subject matter of this Specification is identical with that of Specification 597,468.
GB12155/41A 1940-03-09 1941-09-19 Improvements in or relating to cathode ray tubes having an electrostatic projection lens and devices comprising such tubes Expired GB549476A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL223635X 1940-03-09

Publications (1)

Publication Number Publication Date
GB549476A true GB549476A (en) 1942-11-23

Family

ID=19779509

Family Applications (2)

Application Number Title Priority Date Filing Date
GB12155/41A Expired GB549476A (en) 1940-03-09 1941-09-19 Improvements in or relating to cathode ray tubes having an electrostatic projection lens and devices comprising such tubes
GB21304/45A Expired GB597468A (en) 1940-03-09 1945-08-21 Improvements in or relating to cathode-ray tubes having an electrostatic projection lens and circuit arrangements comprising such a tube

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB21304/45A Expired GB597468A (en) 1940-03-09 1945-08-21 Improvements in or relating to cathode-ray tubes having an electrostatic projection lens and circuit arrangements comprising such a tube

Country Status (7)

Country Link
US (1) US2341764A (en)
BE (1) BE440981A (en)
CH (1) CH223635A (en)
DE (1) DE1077336B (en)
FR (1) FR874105A (en)
GB (2) GB549476A (en)
NL (1) NL58348C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB648118A (en) * 1948-11-25 1950-12-28 Frederick Henry Townsend Improvements in or relating to cathode ray tubes with magnetic deflection
NL153273B (en) * 1950-05-02 Bosch Gmbh Robert DRAIN DEVICE FOR THE CONTINUOUS DRAINAGE OF A SUGAR MASS FROM A VACUUM BOILER FOR VAPORING A VISCOUS MASS OF SUGAR.
US2672568A (en) * 1951-03-27 1954-03-16 Int Standard Electric Corp Electron gun for cathode-ray tubes
DE1076827B (en) * 1952-05-24 1960-03-03 Telefunken Gmbh Electron beam generation system for cathode ray tubes
BE521804A (en) * 1952-07-30
US2818519A (en) * 1953-11-13 1957-12-31 Telefunken Gmbh Cathode-ray tube
NL98369C (en) * 1958-07-17
US4345182A (en) * 1980-06-02 1982-08-17 The Boeing Company Electrode having spiral-shaped electrically conducting regions therein useful as an anode in electron beam discharge devices
DE19534124A1 (en) * 1995-09-14 1997-03-20 Licentia Gmbh cathode ray tube

Also Published As

Publication number Publication date
DE1077336B (en) 1960-03-10
CH223635A (en) 1942-09-30
FR874105A (en) 1942-07-29
US2341764A (en) 1944-02-15
GB597468A (en) 1948-01-27
NL58348C (en)
BE440981A (en)

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