GB657234A - Improvements in or relating to the focusing and positioning of the beam of a cathode-ray tube - Google Patents

Improvements in or relating to the focusing and positioning of the beam of a cathode-ray tube

Info

Publication number
GB657234A
GB657234A GB507349A GB507349A GB657234A GB 657234 A GB657234 A GB 657234A GB 507349 A GB507349 A GB 507349A GB 507349 A GB507349 A GB 507349A GB 657234 A GB657234 A GB 657234A
Authority
GB
United Kingdom
Prior art keywords
flange
plate
cathode
polepiece
magnet
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
GB507349A
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.)
GERALD AUBREY BARDEN
Harman Motive Ltd
Original Assignee
GERALD AUBREY BARDEN
Electro Acoustic Industries 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
Priority to NL676713697A priority Critical patent/NL147885B/xx
Priority to BE490180D priority patent/BE490180A/xx
Application filed by GERALD AUBREY BARDEN, Electro Acoustic Industries Ltd filed Critical GERALD AUBREY BARDEN
Priority to GB507349A priority patent/GB657234A/en
Priority to DEP4280A priority patent/DE970363C/de
Publication of GB657234A publication Critical patent/GB657234A/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
    • H01J29/54—Arrangements for centring ray or beam

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
GB507349A 1949-02-24 1949-02-24 Improvements in or relating to the focusing and positioning of the beam of a cathode-ray tube Expired GB657234A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL676713697A NL147885B (nl) 1949-02-24 Droge cel.
BE490180D BE490180A (enrdf_load_stackoverflow) 1949-02-24
GB507349A GB657234A (en) 1949-02-24 1949-02-24 Improvements in or relating to the focusing and positioning of the beam of a cathode-ray tube
DEP4280A DE970363C (de) 1949-02-24 1950-10-03 Permanentmagnetische Fokussierungseinrichtung fuer den Elektronenstrahl von Kathodenstrahlroehren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB507349A GB657234A (en) 1949-02-24 1949-02-24 Improvements in or relating to the focusing and positioning of the beam of a cathode-ray tube

Publications (1)

Publication Number Publication Date
GB657234A true GB657234A (en) 1951-09-12

Family

ID=9789253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB507349A Expired GB657234A (en) 1949-02-24 1949-02-24 Improvements in or relating to the focusing and positioning of the beam of a cathode-ray tube

Country Status (4)

Country Link
BE (1) BE490180A (enrdf_load_stackoverflow)
DE (1) DE970363C (enrdf_load_stackoverflow)
GB (1) GB657234A (enrdf_load_stackoverflow)
NL (1) NL147885B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785348A (en) * 1954-06-03 1957-03-12 Philips Corp Adjusting device for a magnetic electron lens

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE424327A (enrdf_load_stackoverflow) * 1936-10-30
DE973258C (de) * 1938-03-08 1959-12-31 Siemens Ag Magnetische Polschuhlinse kleiner Brennweite fuer elektronenoptische Vergroesserungen in Elektronenmikroskopen
GB576369A (en) * 1943-03-31 1946-04-01 British Thomson Houston Co Ltd Improvements in and relating to electron discharge devices and lens systems therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2785348A (en) * 1954-06-03 1957-03-12 Philips Corp Adjusting device for a magnetic electron lens

Also Published As

Publication number Publication date
DE970363C (de) 1958-09-11
NL147885B (nl)
BE490180A (enrdf_load_stackoverflow)

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