GB830307A - Electron beam deflection systems - Google Patents
Electron beam deflection systemsInfo
- 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
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.
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)
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)
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)
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 |
-
0
- BE BE562482D patent/BE562482A/xx unknown
- NL NL222549D patent/NL222549A/xx unknown
-
1956
- 1956-12-31 US US631554A patent/US2904721A/en not_active Expired - Lifetime
-
1957
- 1957-10-18 FR FR1190005D patent/FR1190005A/en not_active Expired
- 1957-11-13 DE DEW22222A patent/DE1077707B/en active Pending
- 1957-12-31 GB GB40429/57A patent/GB830307A/en not_active Expired
Cited By (2)
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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