GB830307A - Electron beam deflection systems - Google Patents

Electron beam deflection systems

Info

Publication number
GB830307A
GB830307A GB40429/57A GB4042957A GB830307A GB 830307 A GB830307 A GB 830307A GB 40429/57 A GB40429/57 A GB 40429/57A GB 4042957 A GB4042957 A GB 4042957A GB 830307 A GB830307 A GB 830307A
Authority
GB
United Kingdom
Prior art keywords
signals
differential amplifier
electron beam
dec
fed
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
GB40429/57A
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
Western Electric Co 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
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB830307A publication Critical patent/GB830307A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/23—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using electrostatic storage on a common layer, e.g. Forrester-Haeff tubes or William tubes
    • 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
    • H01J31/04—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 only one or two output electrodes with only two electrically independant groups or electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Electron Beam Exposure (AREA)
  • Details Of Television Scanning (AREA)

Abstract

830,307. Electron beam apparatus. WESTERN ELECTRIC CO. Inc. Dec. 31, 1957 [Dec. 31, 1956], No. 40429/57. Class 39(1). [Also in Group XXXV] Electron beam positioning apparatus has the beam deflected over pairs of overlapping plates 14, 15 and 16, 17, for the vertical co-ordinate, and 18, 19 and 20, 21, for the horizontal coordinate, to fall symmetrically on each pair. Any departure from symmetrical impingement, due to a drift of the beam or a variation in the gain, is detected in a comparison circuit including condensers 33, 34 for storing the signals. A correcting signal is then fed to the deflection plates 12 through a differential amplifier 39 or through an adder 72, differential amplifier 38 and analogue converter 26. The signals are fed to the condensers 33, 34 through a differential amplifier 32 after being directed through gates 35, 36 in accordance with signals from a gate control 37. Analogue converter 26 is controlled by an input register comprising a series of bistable flip-flop units which are described in the Specification. The apparatus is used to control the positioning of further cathode-ray tubes e.g. barrier grid storage tubes.
GB40429/57A 1956-12-31 1957-12-31 Electron beam deflection systems Expired GB830307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US631554A US2904721A (en) 1956-12-31 1956-12-31 Electron beam control system

Publications (1)

Publication Number Publication Date
GB830307A true GB830307A (en) 1960-03-16

Family

ID=24531710

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40429/57A Expired GB830307A (en) 1956-12-31 1957-12-31 Electron beam deflection systems

Country Status (6)

Country Link
US (1) US2904721A (en)
BE (1) BE562482A (en)
DE (1) DE1077707B (en)
FR (1) FR1190005A (en)
GB (1) GB830307A (en)
NL (1) NL222549A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2345574A (en) * 1999-01-05 2000-07-12 Applied Materials Inc Apparatus and method for monitoring and tuning an ion beam in an ion implantation apparatus

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2997619A (en) * 1960-03-24 1961-08-22 Bell Telephone Labor Inc Beam positioning tube
US3447026A (en) * 1965-10-15 1969-05-27 Xerox Corp Crt scan stabilizer
US3497761A (en) * 1968-03-11 1970-02-24 Clayton A Washburn Cathode-ray tube apparatus
US3749963A (en) * 1970-05-19 1973-07-31 Us Air Force Device to aid in centering of high energy electric particle beams in an evacuated drift tube
NL183553C (en) * 1978-05-12 1988-11-16 Philips Nv Apparatus for directing electrically charged particles to a meeting point.
US10879028B2 (en) * 2016-04-14 2020-12-29 Varian Medical Systems, Inc. Beam position monitors for medical radiation machines

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630548A (en) * 1937-12-04 1953-03-03 Muller Egon Nicolas Cathode-ray system
US2523162A (en) * 1945-10-03 1950-09-19 Philco Corp Electrical system
US2684454A (en) * 1947-12-02 1954-07-20 Du Mont Allen B Lab Inc Control signal for color television
US2784341A (en) * 1947-12-02 1957-03-05 Du Mont Allen B Lab Inc Control signals for sequential color television
US2621323A (en) * 1948-02-26 1952-12-09 Int Standard Electric Corp Pulse code modulation system
US2750532A (en) * 1948-06-03 1956-06-12 Ibm Cathode-ray devices, particularly for electronic computers
US2594517A (en) * 1949-10-25 1952-04-29 Rca Corp Centering and amplitude control apparatus for cathode-ray beams
US2762949A (en) * 1951-07-27 1956-09-11 Du Mont Allen B Lab Inc Comparator circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2345574A (en) * 1999-01-05 2000-07-12 Applied Materials Inc Apparatus and method for monitoring and tuning an ion beam in an ion implantation apparatus
US6897457B1 (en) 1999-01-05 2005-05-24 Applied Materials, Inc. Apparatus and method for monitoring and tuning an ion beam in ion implantation apparatus

Also Published As

Publication number Publication date
US2904721A (en) 1959-09-15
NL222549A (en)
BE562482A (en)
DE1077707B (en) 1960-03-17
FR1190005A (en) 1959-10-08

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