GB481660A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB481660A
GB481660A GB4889/38A GB488938A GB481660A GB 481660 A GB481660 A GB 481660A GB 4889/38 A GB4889/38 A GB 4889/38A GB 488938 A GB488938 A GB 488938A GB 481660 A GB481660 A GB 481660A
Authority
GB
United Kingdom
Prior art keywords
aperture
coil
diaphragm
ray tubes
grids
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
GB4889/38A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB481660A publication Critical patent/GB481660A/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
    • H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Particle Accelerators (AREA)

Abstract

481,660. Cathode-ray tubes. ZEITLINE, V., ZEITLINE, A., and KLIATCHKO, V. June 13, 1936, No. 4889 /38. Convention date, June 13, 1935. Divided out of 481,690. [Class 39 (i)] A device for regulating the intensity of the beam comprises three planar metallic grids between the cathode and an apertured diaphragm and a lens concentrating the beam on the aperture. As shown, the device comprises two positive grids E1, E2 and an intermediate negative grid M. A coil B1 focuses the beam on the aperture of a diaphragm E3 integral with the member E2, and a lens L reproduces this aperture on the anode A1. The final reproduction is made with the aid of a coil B2. In a modification, the diaphragm E3 is separated from the grid E2 and the coil B1 is replaced by a cylindrical lens surrounding the grids. Specification 481,590 is referred to.
GB4889/38A 1935-06-13 1936-06-13 Improvements in or relating to cathode ray tubes Expired GB481660A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR803155T 1935-06-13

Publications (1)

Publication Number Publication Date
GB481660A true GB481660A (en) 1938-03-14

Family

ID=9249997

Family Applications (4)

Application Number Title Priority Date Filing Date
GB4888/38A Expired GB481659A (en) 1935-06-13 1936-06-13 Improvements in or relating to cathode ray tubes
GB16580/36A Expired GB481590A (en) 1935-06-13 1936-06-13 Improvements in or relating to the reproduction of electronic images
GB4889/38A Expired GB481660A (en) 1935-06-13 1936-06-13 Improvements in or relating to cathode ray tubes
GB33110/37A Expired GB478238A (en) 1935-06-13 1936-06-13 Improvements in or relating to light sensitive electron discharge tubes

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB4888/38A Expired GB481659A (en) 1935-06-13 1936-06-13 Improvements in or relating to cathode ray tubes
GB16580/36A Expired GB481590A (en) 1935-06-13 1936-06-13 Improvements in or relating to the reproduction of electronic images

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB33110/37A Expired GB478238A (en) 1935-06-13 1936-06-13 Improvements in or relating to light sensitive electron discharge tubes

Country Status (3)

Country Link
BE (1) BE415814A (en)
FR (1) FR803155A (en)
GB (4) GB481659A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE751509C (en) * 1938-06-03 1954-01-25 Manfred Von Ardenne Electron beam oscilloscope

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757913C (en) * 1939-03-17 1953-06-01 Aeg Braun tube with baffles
US2572494A (en) * 1946-06-28 1951-10-23 Rca Corp Velocity selection in electron tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE751509C (en) * 1938-06-03 1954-01-25 Manfred Von Ardenne Electron beam oscilloscope

Also Published As

Publication number Publication date
FR803155A (en) 1936-09-24
BE415814A (en)
GB481590A (en) 1938-03-14
GB478238A (en) 1938-01-13
GB481659A (en) 1938-03-14

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