ES8401677A1 - Un tubo de rayos catodicos. - Google Patents
Un tubo de rayos catodicos.Info
- Publication number
- ES8401677A1 ES8401677A1 ES519896A ES519896A ES8401677A1 ES 8401677 A1 ES8401677 A1 ES 8401677A1 ES 519896 A ES519896 A ES 519896A ES 519896 A ES519896 A ES 519896A ES 8401677 A1 ES8401677 A1 ES 8401677A1
- Authority
- ES
- Spain
- Prior art keywords
- spherical aberration
- ray tube
- cathode ray
- electrode
- correction means
- 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
-
- 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
- H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses
- H01J29/566—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses for correcting aberration
-
- 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
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Particle Accelerators (AREA)
- Electron Sources, Ion Sources (AREA)
- Electron Beam Exposure (AREA)
- Cold Cathode And The Manufacture (AREA)
Abstract
REDUCCION DEL EFECTO DE ABERRACION ESFERICA POSITIVA EN TUBOS DE RAYOS CATODICOS. CONSTA DE UNA MALLA ELECTRICAMENTE CONDUCTORA CURVADA (30), CONSTITUIDA DE TUNGSTENO (DIAMETRO DEL HILO 7,5 BMBM Y PASO DE 75 BMB), EN EL SEGUNDO ELECTRODO (25) Y MIRANDO EN LA DIRECCION DE PROPAGACION DEL HAZ DE ELECTRONES (31) DE UNA LENTE ACELERADORA 8DE UN CAÑON DE ELECTRONES. LA CURVATURA DE LA MALLA DISMINUYE INICIALMENTE CON LA DISTANCIA AL EJE (31). DICHA CURVATURA VARIA SEGUN UNA FUNCION DE BESSEL DE ORDEN CERO. CONSISTE EN QUE EL RADIO DE CURVATURA AUMENTE CON UNA DISTANCIA CRECIENTE DESDE EL EJE OPTICO DE LA LENTE ELECTRONICA, DE MODO QUE TIENE LUGAR UNA VARIACION DE INTENSIDAD DE LA LENTE, AUMENTANDO DICHA INTENSIDAD EN EL CENTRO DEL HAZ Y DISMINUYENDO HACIA EL BORDE. COMO RESULTADO SE OBTIENE UNA LENTE QUE TIENE LA MISMA INTENSIDAD PARA TODAS LAS PARTES DEL HAZ DE ELECTRONES. PRODUCE UNA ABERRACION ESFERICA NEGATIVA QUE SE EXTIENDE DESDE LA MALLA EN LA DIRECCION DEL PRIMER ELECTRODO DE LA LENTE PARA COMPENSAR EL EFECTO POSITIVO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8200691A NL8200691A (nl) | 1982-02-22 | 1982-02-22 | Kathodestraalbuis. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES519896A0 ES519896A0 (es) | 1983-12-01 |
ES8401677A1 true ES8401677A1 (es) | 1983-12-01 |
Family
ID=19839299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES519896A Expired ES8401677A1 (es) | 1982-02-22 | 1983-02-18 | Un tubo de rayos catodicos. |
Country Status (10)
Country | Link |
---|---|
US (1) | US4567399A (es) |
JP (1) | JPS58154142A (es) |
CA (1) | CA1194081A (es) |
DD (1) | DD217081A5 (es) |
DE (1) | DE3305415A1 (es) |
ES (1) | ES8401677A1 (es) |
FR (1) | FR2522196B1 (es) |
GB (1) | GB2115978B (es) |
IT (1) | IT1171059B (es) |
NL (1) | NL8200691A (es) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8400841A (nl) * | 1984-03-16 | 1985-10-16 | Philips Nv | Kathodestraalbuis. |
US5154668A (en) | 1989-04-06 | 1992-10-13 | Schubert Keith E | Single paper sheet forming a two-sided copy of information entered on both sides thereof |
US6369512B1 (en) | 1998-10-05 | 2002-04-09 | Sarnoff Corporation | Dual beam projection tube and electron lens therefor |
FR3006499B1 (fr) | 2013-05-31 | 2016-11-25 | Commissariat Energie Atomique | Lentille electrostatique a membrane isolante ou semiconductrice |
US11373838B2 (en) * | 2018-10-17 | 2022-06-28 | Kla Corporation | Multi-beam electron characterization tool with telecentric illumination |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2225917A (en) * | 1937-06-02 | 1940-12-24 | Gen Electric | Electron discharge device |
US2223040A (en) * | 1937-06-30 | 1940-11-26 | Gen Electric | Electron discharge device |
US2277414A (en) * | 1941-07-02 | 1942-03-24 | Gen Electric | Electron lens |
FR1272053A (fr) * | 1959-07-07 | 1961-09-22 | Rca Corp | Perfectionnements aux tubes à rayons cathodiques |
NL253491A (es) * | 1959-07-07 | |||
DE1134769B (de) * | 1959-08-22 | 1962-08-16 | Zeiss Carl Fa | Vorrichtung zur Kompensation des OEffnungsfehlers einer rotations-symmetrischen, raumladungsfreien elektronenoptischen Linse |
US3376447A (en) * | 1963-12-16 | 1968-04-02 | Philips Corp | Cathode-ray image scanning tube using low-velocity electron beam with electrostatic deflection and anamorphotic lens for improved focussing |
JPS5572346A (en) * | 1978-11-27 | 1980-05-31 | Nippon Telegr & Teleph Corp <Ntt> | Electrostatic electron lens |
NL7812540A (nl) * | 1978-12-27 | 1980-07-01 | Philips Nv | Kathodestraalbuis. |
JPS5691360A (en) * | 1979-12-25 | 1981-07-24 | Toshiba Corp | Electron gun structure |
-
1982
- 1982-02-22 NL NL8200691A patent/NL8200691A/nl not_active Application Discontinuation
-
1983
- 1983-01-17 US US06/458,231 patent/US4567399A/en not_active Expired - Fee Related
- 1983-02-17 DE DE19833305415 patent/DE3305415A1/de active Granted
- 1983-02-17 CA CA000421850A patent/CA1194081A/en not_active Expired
- 1983-02-18 IT IT19660/83A patent/IT1171059B/it active
- 1983-02-18 GB GB08304505A patent/GB2115978B/en not_active Expired
- 1983-02-18 ES ES519896A patent/ES8401677A1/es not_active Expired
- 1983-02-19 JP JP58025527A patent/JPS58154142A/ja active Granted
- 1983-02-21 FR FR8302769A patent/FR2522196B1/fr not_active Expired
- 1983-03-16 DD DD83248851A patent/DD217081A5/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL8200691A (nl) | 1983-09-16 |
IT8319660A0 (it) | 1983-02-18 |
CA1194081A (en) | 1985-09-24 |
JPH0447939B2 (es) | 1992-08-05 |
FR2522196B1 (fr) | 1986-09-26 |
GB2115978A (en) | 1983-09-14 |
US4567399A (en) | 1986-01-28 |
GB2115978B (en) | 1985-12-18 |
DE3305415A1 (de) | 1983-09-01 |
DD217081A5 (de) | 1985-01-02 |
JPS58154142A (ja) | 1983-09-13 |
IT1171059B (it) | 1987-06-10 |
ES519896A0 (es) | 1983-12-01 |
DE3305415C2 (es) | 1991-10-24 |
GB8304505D0 (en) | 1983-03-23 |
FR2522196A1 (fr) | 1983-08-26 |
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