GB487998A - Improvements in cathode ray tubes - Google Patents

Improvements in cathode ray tubes

Info

Publication number
GB487998A
GB487998A GB29365/37A GB2936537A GB487998A GB 487998 A GB487998 A GB 487998A GB 29365/37 A GB29365/37 A GB 29365/37A GB 2936537 A GB2936537 A GB 2936537A GB 487998 A GB487998 A GB 487998A
Authority
GB
United Kingdom
Prior art keywords
per cent
cathode ray
ray tubes
manganese
cobalt
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
GB29365/37A
Other languages
English (en)
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 GB487998A publication Critical patent/GB487998A/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
    • H01J29/64—Magnetic lenses
    • H01J29/68—Magnetic lenses using permanent magnets only

Landscapes

  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
GB29365/37A 1936-10-30 1937-10-27 Improvements in cathode ray tubes Expired GB487998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE487998X 1936-10-30

Publications (1)

Publication Number Publication Date
GB487998A true GB487998A (en) 1938-06-29

Family

ID=6543722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29365/37A Expired GB487998A (en) 1936-10-30 1937-10-27 Improvements in cathode ray tubes

Country Status (4)

Country Link
US (1) US2212206A (en:Method)
BE (1) BE424327A (en:Method)
FR (1) FR828375A (en:Method)
GB (1) GB487998A (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970363C (de) * 1949-02-24 1958-09-11 Pye Ltd Permanentmagnetische Fokussierungseinrichtung fuer den Elektronenstrahl von Kathodenstrahlroehren

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425125A (en) * 1940-07-20 1947-08-05 Hartford Nat Bank & Trust Co Cathode-ray tube with magnetic compensating means
US2503173A (en) * 1946-10-18 1950-04-04 Rca Corp Permanent magnetic electron lens system
US2555850A (en) * 1948-01-28 1951-06-05 Nicholas D Glyptis Ion trap
NL144716B (nl) * 1948-02-07 Bus Wand A G Inrichting voor het losneembaar aaneenspannen van twee zich onderling loodrecht uitstrekkende meubeldelen.
US2541446A (en) * 1949-01-04 1951-02-13 Barnet S Trott Image distortion corrector for cathode-ray tubes
US2522872A (en) * 1949-01-10 1950-09-19 Heppner Mfg Company Device for controlling the path of travel of electrons in cathoderay tubes
US2533687A (en) * 1949-05-27 1950-12-12 Quam Nichols Company Magnetic focusing device
US2552342A (en) * 1949-11-17 1951-05-08 Clarostat Mfg Co Inc Magnetic structure for use in ion-traps
US2533688A (en) * 1950-01-31 1950-12-12 Quam Nichols Company Focusing device
US2602902A (en) * 1950-02-14 1952-07-08 Bendix Aviat Corp Sweep amplitude control for magnetically deflected cathode-ray tubes
US2594099A (en) * 1950-04-22 1952-04-22 Ite Circuit Breaker Ltd Focusing coil for cathode-ray tubes
NL89376C (en:Method) * 1950-06-17
US2533689A (en) * 1950-06-28 1950-12-12 Quam Nichols Company Magnetic focusing device
US2608665A (en) * 1950-07-29 1952-08-26 Gen Electric Permanent magnet focusing device
US2568668A (en) * 1950-08-18 1951-09-18 Best Mfg Co Inc Cathode-ray tube focusing device of the permanent magnet type
US2592185A (en) * 1950-12-09 1952-04-08 Quam Nichols Company Focusing device
US2619607A (en) * 1951-03-10 1952-11-25 Glaser Steers Corp Internal focusing device
US2580606A (en) * 1951-03-21 1952-01-01 Best Mfg Company Inc Cathode-ray tube focusing device
US2681421A (en) * 1952-03-04 1954-06-15 Gen Electric Magnetic focusing structure for electron beams
US2664514A (en) * 1952-03-10 1953-12-29 All Star Products Inc Magnetic focusing mechanism
DE1074163B (de) * 1953-05-30 1960-01-28 Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen Kathodenstrahlröhre mit einem Strahlerzeugungssystem mit Ionenfalle
US2785330A (en) * 1953-10-19 1957-03-12 Nat Video Corp Internal pole piece arrangement for a magnetically-focused cathode ray tube
NL200862A (en:Method) * 1954-10-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970363C (de) * 1949-02-24 1958-09-11 Pye Ltd Permanentmagnetische Fokussierungseinrichtung fuer den Elektronenstrahl von Kathodenstrahlroehren

Also Published As

Publication number Publication date
US2212206A (en) 1940-08-20
FR828375A (fr) 1938-05-17
BE424327A (en:Method)

Similar Documents

Publication Publication Date Title
GB487998A (en) Improvements in cathode ray tubes
GB491444A (en) Improvements in short-wave radio transmitters embodying magnetron oscillators
GB519304A (en) Improvements in magnesium alloys
GB406086A (en) Improvements in or relating to permanent magnets
GB481351A (en) Improvements in or relating to telephone receivers
GB482168A (en) Improvement in secondary electron emission electrode
GB493714A (en) Improvements in or relating to electron multipliers
GB428078A (en) Alloy for permanent magnets
GB866194A (en) Improvements in indirectly-heated nickel alloy cathodes
GB459319A (en) Improvements in electric resistance alloys
GB498220A (en) Improvements in and relating to permanent magnets
GB673237A (en) Improvements in and relating to oxide-coated cathodes
GB441243A (en) Improvements in permanent magnets and alloys for making the same
GB481249A (en) Improvements in or relating to magnetic cores of inductive devices
GB479004A (en) Improvements in nickel anodes
GB428363A (en) Improvements in aluminium base alloys
GB418772A (en) Corrosion-resistant and mechanically workable alloys
GB392658A (en) Alloy for permanent magnets
GB534175A (en) Improvements in or relating to magneto generators
GB392660A (en) Alloy for permanent magnets
GB503929A (en) Improvements in or relating to iron alloys for permanent magnets
GB454567A (en) An alloy for permanent magnets
GB630753A (en) Ferrous alloy
GB500227A (en) Permanent magnets
GB497644A (en) Improvements in and relating to glass to metal seals