FR787469A - Improvements to cathode ray tubes - Google Patents

Improvements to cathode ray tubes

Info

Publication number
FR787469A
FR787469A FR787469DA FR787469A FR 787469 A FR787469 A FR 787469A FR 787469D A FR787469D A FR 787469DA FR 787469 A FR787469 A FR 787469A
Authority
FR
France
Prior art keywords
cathode ray
ray tubes
tubes
cathode
ray
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
Other languages
French (fr)
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical 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
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR787469A publication Critical patent/FR787469A/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
FR787469D 1934-03-19 1935-03-16 Improvements to cathode ray tubes Expired FR787469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8644/34A GB429854A (en) 1934-03-19 1934-03-19 Improvements in or relating to cathode ray tubes

Publications (1)

Publication Number Publication Date
FR787469A true FR787469A (en) 1935-09-23

Family

ID=9856451

Family Applications (1)

Application Number Title Priority Date Filing Date
FR787469D Expired FR787469A (en) 1934-03-19 1935-03-16 Improvements to cathode ray tubes

Country Status (3)

Country Link
US (1) US2176974A (en)
FR (1) FR787469A (en)
GB (1) GB429854A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764012C (en) * 1936-11-15 1954-10-04 Aeg Electron-optical imaging system to achieve a small electron spot

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540621A (en) * 1948-02-19 1951-02-06 Rca Corp Electron gun structure
NL150232B (en) * 1948-12-10 Hoffmann La Roche METHOD OF DETERMINING THE (ALPHA) AMYLASE ACTIVITY OF A MATERIAL OF HUMAN OR ANIMAL ORIGIN, AND REAGENTIA FOR THIS.
US2564743A (en) * 1949-03-15 1951-08-21 Sperry Corp Charged particle beam forming apparatus
US2986668A (en) * 1957-12-23 1961-05-30 Gen Dynamics Corp Cathode ray tube optical system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764012C (en) * 1936-11-15 1954-10-04 Aeg Electron-optical imaging system to achieve a small electron spot

Also Published As

Publication number Publication date
US2176974A (en) 1939-10-24
GB429854A (en) 1935-06-07

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