GB456717A - Improvements in or relating to braun tubes and circuits therefore, preferably for television purposes - Google Patents

Improvements in or relating to braun tubes and circuits therefore, preferably for television purposes

Info

Publication number
GB456717A
GB456717A GB25753/36A GB2575336A GB456717A GB 456717 A GB456717 A GB 456717A GB 25753/36 A GB25753/36 A GB 25753/36A GB 2575336 A GB2575336 A GB 2575336A GB 456717 A GB456717 A GB 456717A
Authority
GB
United Kingdom
Prior art keywords
plates
deflecting
march
anode
fluctuating
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
GB25753/36A
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 claimed from US8660A external-priority patent/US2137353A/en
Application filed by Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB456717A publication Critical patent/GB456717A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
    • H04N3/04—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving aperture also apertures covered by lenses
    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/74—Deflecting by electric fields only

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

456,717. Cathode-ray tubes; television. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. March 4, 1935, No. 25753/36. Convention date, March 31, 1934. Addition to 423,427 and divided out of 457,757, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 4, 1935. Drawings to Specification. [Classes 39 (i) and 40 (iii)] The two plates of at least one pair of deflecting plates operating in reverse phase or pushpull as described in the parent Specification are together given a positive or fluctuating bias relatively to the anode and luminous screen to compensate for the interference of the deflecting fields with the electron-optical system and to maintain the picture sharp at its edges. The tube described in Specification 457,757 and having a wall coating surrounding the plates and connected to the anode is operated with the bias on one or both pairs of plates positive and adjustable or fluctuating at the frequency, or twice the frequency, of the deflecting potentials.
GB25753/36A 1934-03-03 1935-03-04 Improvements in or relating to braun tubes and circuits therefore, preferably for television purposes Expired GB456717A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2137353X 1934-03-03
DE456331X 1934-03-31
US8660A US2137353A (en) 1934-03-03 1935-02-28 Television tube
US213731A US2197899A (en) 1934-03-03 1938-06-15 Television tube

Publications (1)

Publication Number Publication Date
GB456717A true GB456717A (en) 1936-11-04

Family

ID=32074463

Family Applications (5)

Application Number Title Priority Date Filing Date
GB6688/35A Expired GB457757A (en) 1934-03-03 1935-03-04 Television cathode ray tube
GB20744/36A Expired GB457846A (en) 1934-03-03 1935-03-04 Improvements in or relating to television tubes
GB25752/36A Expired GB457848A (en) 1934-03-03 1935-03-04 Improvements in or relating to television cathode ray tubes
GB25754/36A Expired GB456331A (en) 1934-03-03 1935-03-04 Improvements in or relating to braun tubes, preferably for television purposes
GB25753/36A Expired GB456717A (en) 1934-03-03 1935-03-04 Improvements in or relating to braun tubes and circuits therefore, preferably for television purposes

Family Applications Before (4)

Application Number Title Priority Date Filing Date
GB6688/35A Expired GB457757A (en) 1934-03-03 1935-03-04 Television cathode ray tube
GB20744/36A Expired GB457846A (en) 1934-03-03 1935-03-04 Improvements in or relating to television tubes
GB25752/36A Expired GB457848A (en) 1934-03-03 1935-03-04 Improvements in or relating to television cathode ray tubes
GB25754/36A Expired GB456331A (en) 1934-03-03 1935-03-04 Improvements in or relating to braun tubes, preferably for television purposes

Country Status (5)

Country Link
US (1) US2197899A (en)
BE (2) BE408184A (en)
FR (1) FR786632A (en)
GB (5) GB457757A (en)
NL (1) NL51359C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE766496C (en) * 1936-01-29 1952-04-10 Aeg Electron-optical image converter
US2572858A (en) * 1947-06-03 1951-10-30 Sylvania Electric Prod Electron optical system

Also Published As

Publication number Publication date
GB457846A (en) 1936-12-04
BE408183A (en)
US2197899A (en) 1940-04-23
GB457757A (en) 1936-12-04
GB456331A (en) 1936-11-04
GB457848A (en) 1936-12-04
BE408184A (en)
NL51359C (en)
FR786632A (en) 1935-09-06

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