US2567359A - Electron discharge apparatus - Google Patents

Electron discharge apparatus Download PDF

Info

Publication number
US2567359A
US2567359A US772538A US77253847A US2567359A US 2567359 A US2567359 A US 2567359A US 772538 A US772538 A US 772538A US 77253847 A US77253847 A US 77253847A US 2567359 A US2567359 A US 2567359A
Authority
US
United States
Prior art keywords
target
electrodes
targets
electron
electrode
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 - Lifetime
Application number
US772538A
Other languages
English (en)
Inventor
Anderson Alva Eugene
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.)
AT&T Corp
Original Assignee
Bell Telephone Laboratories Inc
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 NL72942D priority Critical patent/NL72942C/xx
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US772538A priority patent/US2567359A/en
Application granted granted Critical
Publication of US2567359A publication Critical patent/US2567359A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
    • H01J31/06—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused with more than two output electrodes, e.g. for multiple switching or counting

Definitions

  • the aforenoted and other objects are realized by a particular construction of target electrode assembly and by correlation of the electron beam deflection system therewith.
  • the assembly above mentioned comprises a plurality of elongated target electrodes mounted in circular array and extending obliquely with respect to radii of a reference circle, the electrodes being disposed in partly overlapping relation relative to the radii.
  • the deflection system is constructed and arranged toproduce a beam trace at the electrode assembly of circular saw-tooth form, alternate sections of the trace being parallel to or coincident with the longitudinal axis of respective electrodes and the other sections of thetrace being radial or substantially so.
  • the beam is controlled so that it is on during the sweep thereof along each target electrode and is extinguished during the radial portions of the beam trace.
  • any target electrode may be utilized directly as the output.
  • the target electrodes areconstructed to have a coefiicient of secondary emission greater than unity, and a collector electrode structure is provided for receiving the secondary electrons emanating from the target. electrodes.
  • the output current at each target electrode is proportional to the difierence between the beam current to the electrode and the secondary electron current away therefrom.
  • the collector electrode structure includes conductive barriers or shields interposed between adjacent target electrodes.
  • the target electrodes and shield-collector elements constitute a plurality, e. g. 24, of substantially identical units mounted in circular array coaxial with the electron gun.
  • the elements function to collect secondary electrons emanating from the target electrodes.
  • are treated or coated to minimize secondary electron emission therefrom.
  • the several target electrodes are highly shielded from one another and from external fields. Stray secondary electrons, such as may emanate from the elements 4
  • Electron discharge apparatus comprising a plurality of elongated targets arranged in a circle and extending at oblique angles to respective radii of said circle, means for projecting an electron beam toward said targets, and means for sweeping said beam over said targets in succession and in the direction, at each target, of the length thereof.

Landscapes

  • Electron Sources, Ion Sources (AREA)
US772538A 1947-09-06 1947-09-06 Electron discharge apparatus Expired - Lifetime US2567359A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL72942D NL72942C (un) 1947-09-06
US772538A US2567359A (en) 1947-09-06 1947-09-06 Electron discharge apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US772538A US2567359A (en) 1947-09-06 1947-09-06 Electron discharge apparatus

Publications (1)

Publication Number Publication Date
US2567359A true US2567359A (en) 1951-09-11

Family

ID=25095407

Family Applications (1)

Application Number Title Priority Date Filing Date
US772538A Expired - Lifetime US2567359A (en) 1947-09-06 1947-09-06 Electron discharge apparatus

Country Status (2)

Country Link
US (1) US2567359A (un)
NL (1) NL72942C (un)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719248A (en) * 1947-07-11 1955-09-27 Josephson Bengt Adolf Sanmel Electron discharge device
US2822493A (en) * 1953-04-24 1958-02-04 Maurice D Harsh Graphechon storage tube
US2874328A (en) * 1954-12-31 1959-02-17 Munsey E Crost Voltage sampling apparatus
US2927233A (en) * 1956-11-05 1960-03-01 Philco Corp Electrical apparatus
US2945143A (en) * 1958-04-03 1960-07-12 Shapiro Jack Compact cathode ray tube

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2195098A (en) * 1937-10-30 1940-03-26 Bell Telephone Labor Inc Electron discharge device
US2265848A (en) * 1940-07-27 1941-12-09 Hazeltine Corp Synchronizing-signal generator
US2290651A (en) * 1939-09-26 1942-07-21 William H Peck Television system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2195098A (en) * 1937-10-30 1940-03-26 Bell Telephone Labor Inc Electron discharge device
US2290651A (en) * 1939-09-26 1942-07-21 William H Peck Television system
US2265848A (en) * 1940-07-27 1941-12-09 Hazeltine Corp Synchronizing-signal generator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719248A (en) * 1947-07-11 1955-09-27 Josephson Bengt Adolf Sanmel Electron discharge device
US2822493A (en) * 1953-04-24 1958-02-04 Maurice D Harsh Graphechon storage tube
US2874328A (en) * 1954-12-31 1959-02-17 Munsey E Crost Voltage sampling apparatus
US2927233A (en) * 1956-11-05 1960-03-01 Philco Corp Electrical apparatus
US2945143A (en) * 1958-04-03 1960-07-12 Shapiro Jack Compact cathode ray tube

Also Published As

Publication number Publication date
NL72942C (un)

Similar Documents

Publication Publication Date Title
US2250528A (en) Signal translating system and apparatus
US2160797A (en) Electron discharge apparatus
US2433941A (en) Television transmitting tube
US2245364A (en) Cathode ray device
US2170944A (en) Multicathode ray discharge device
US2452157A (en) Electron discharge apparatus
US2567359A (en) Electron discharge apparatus
US2598919A (en) Barrier grid storage tube
US2197042A (en) Electron discharge device
US2540835A (en) Cathode-ray device
US3517195A (en) High intensity x-ray tube
US2197041A (en) Electron discharge device
US2213547A (en) Electron discharge apparatus
US2299047A (en) Electronic discharge device
GB762550A (en) Improvements in or relating to electron discharge devices
US2845571A (en) Electrostatically focused traveling wave tube
US2250527A (en) Signal translating apparatus
US2250529A (en) Signal translating apparatus
US3309557A (en) Electron gun utilizing a strip transmission line to extract electrons from a cathode
US2512655A (en) Electrical apparatus
US2274194A (en) Apparatus for and method of electron discharge control
US2822493A (en) Graphechon storage tube
US2867687A (en) Cathode ray reproduction tube having auxiliary function of synchronizing signal separation
US2848605A (en) Analogue-to-digital conversion using cathode ray sampler to control cathode ray coder
US2777087A (en) Means for obtaining a sensing signal for a servo-controlled color television viewing tube