FR2358743A1 - Lentille electronique astigmate, tube cathodique equipe d'une telle lentille, et dispositif comportant un tel tube - Google Patents

Lentille electronique astigmate, tube cathodique equipe d'une telle lentille, et dispositif comportant un tel tube

Info

Publication number
FR2358743A1
FR2358743A1 FR7721486A FR7721486A FR2358743A1 FR 2358743 A1 FR2358743 A1 FR 2358743A1 FR 7721486 A FR7721486 A FR 7721486A FR 7721486 A FR7721486 A FR 7721486A FR 2358743 A1 FR2358743 A1 FR 2358743A1
Authority
FR
France
Prior art keywords
lens
tube
astigmate
device including
cathodic
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.)
Granted
Application number
FR7721486A
Other languages
English (en)
Other versions
FR2358743B1 (fr
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2358743A1 publication Critical patent/FR2358743A1/fr
Application granted granted Critical
Publication of FR2358743B1 publication Critical patent/FR2358743B1/fr
Granted legal-status Critical Current

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

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

La configuration des électrodes de la lentille est telle qu'en présence une variation de l'effet de lentille dans une seule direction principale, l'effet de lentille reste inchangé dans l'autre direction principale Une telle lentille est utilisée notamment dans un tube d'images de télévision en couleur dans lequel sont engendrés trois faisceaux situés dans un même plan, l'influence du système parastigmate de bobines de déviation autoconvergentes sur la focalisation des faisceaux électroniques étant compensée grâce à la présente lentille. Application à la fabrication de récepteurs de télévision en couleur.
FR7721486A 1976-07-13 1977-07-12 Lentille electronique astigmate, tube cathodique equipe d'une telle lentille, et dispositif comportant un tel tube Granted FR2358743A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7607722A NL7607722A (nl) 1976-07-13 1976-07-13 Astigmatische elektronenlens, kathodestraal- buis met een dergelijke lens en inrichting met een dergelijke kathodestraalbuis.

Publications (2)

Publication Number Publication Date
FR2358743A1 true FR2358743A1 (fr) 1978-02-10
FR2358743B1 FR2358743B1 (fr) 1981-09-04

Family

ID=19826587

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721486A Granted FR2358743A1 (fr) 1976-07-13 1977-07-12 Lentille electronique astigmate, tube cathodique equipe d'une telle lentille, et dispositif comportant un tel tube

Country Status (11)

Country Link
US (1) US4366419A (fr)
JP (1) JPS539464A (fr)
AU (1) AU509257B2 (fr)
BE (1) BE856704A (fr)
CA (1) CA1107341A (fr)
DE (1) DE2729932C2 (fr)
ES (1) ES460612A1 (fr)
FR (1) FR2358743A1 (fr)
GB (1) GB1567807A (fr)
IT (1) IT1081541B (fr)
NL (1) NL7607722A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342761A1 (fr) * 1988-05-20 1989-11-23 Koninklijke Philips Electronics N.V. Tube image comportant une lentille de focalisation hélicoidale munie d'un élément de lentille ne présentant pas de symétrie de révolution

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8101888A (nl) * 1981-04-16 1982-11-16 Philips Nv Beeldweergeefinrichting.
NL8102527A (nl) * 1981-05-22 1982-12-16 Philips Nv Kleurenbeeldbuis.
US4583024A (en) * 1984-02-21 1986-04-15 Rca Corporation Color picture tube having an inline electron gun with built-in stigmator
US4899091A (en) * 1984-05-29 1990-02-06 Tektronix, Inc. Cathode-ray-tube astigmatism correction apparatus
US4887009A (en) * 1986-02-12 1989-12-12 Rca Licensing Corporation Color display system
DE3775253D1 (de) * 1986-04-03 1992-01-30 Mitsubishi Electric Corp Kathodenstrahlroehre.
US4731563A (en) * 1986-09-29 1988-03-15 Rca Corporation Color display system
KR910009635B1 (ko) * 1989-03-09 1991-11-23 삼성전관 주식회사 다이나믹 포커스 전자총

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1274875A (fr) * 1959-11-25 1961-10-27 Philips Nv Perfectionnements aux lentilles électroniques
FR2089503A5 (fr) * 1970-04-11 1972-01-07 Philips Nv

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2332622A (en) * 1941-10-11 1943-10-26 Bell Telephone Labor Inc Electron discharge device
NL82605C (fr) * 1942-04-08
NL248533A (fr) * 1960-02-17 1964-03-10
US3504211A (en) * 1965-05-12 1970-03-31 Hitachi Ltd Electron beam control device for use with a cathode ray tube for dynamic correction of electron beam astigmatism and defocusing
NL151555B (nl) * 1967-11-11 1976-11-15 Philips Nv Elektronenstraalbuis voor het weergeven van gekleurde beelden.
US3610992A (en) * 1968-12-19 1971-10-05 Sony Corp Cathode-ray tube having end electrodes of three electrodes connected by helical coil coaxial with tube axis
FR2098948A5 (fr) * 1970-07-31 1972-03-10 Bekaert Sa Nv
JPS5520329B2 (fr) * 1974-05-23 1980-06-02

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1274875A (fr) * 1959-11-25 1961-10-27 Philips Nv Perfectionnements aux lentilles électroniques
GB889005A (en) * 1959-11-25 1962-02-07 Mullard Ltd Improvements in or relating to electron lenses
FR2089503A5 (fr) * 1970-04-11 1972-01-07 Philips Nv

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342761A1 (fr) * 1988-05-20 1989-11-23 Koninklijke Philips Electronics N.V. Tube image comportant une lentille de focalisation hélicoidale munie d'un élément de lentille ne présentant pas de symétrie de révolution

Also Published As

Publication number Publication date
US4366419A (en) 1982-12-28
JPS539464A (en) 1978-01-27
NL7607722A (nl) 1978-01-17
BE856704A (fr) 1978-01-11
IT1081541B (it) 1985-05-21
FR2358743B1 (fr) 1981-09-04
DE2729932C2 (de) 1985-08-08
AU2691877A (en) 1979-01-18
ES460612A1 (es) 1978-05-16
AU509257B2 (en) 1980-05-01
DE2729932A1 (de) 1978-01-19
GB1567807A (en) 1980-05-21
CA1107341A (fr) 1981-08-18

Similar Documents

Publication Publication Date Title
JPS6450028A (en) Thin film transistor substrate
FR2358743A1 (fr) Lentille electronique astigmate, tube cathodique equipe d'une telle lentille, et dispositif comportant un tel tube
FR2404832A1 (fr) Telemetre electronique
JPS57141177A (en) Video camera with monitor
FR2394208A1 (fr) Circuit de reglage de polarisation et de sensibilite pour transducteur
SE9201655D0 (sv) Temperaturreferensarrangemang i ir-kamera
BE899731A (fr) Circuit de deviation a plusieurs frequences ou est incorporee une compensation du balayage.
JPS57101471A (en) Read-in system
JPS57190936A (en) Focusing display device of camera
GB1517902A (en) Piezo-resistive device for the electrical read-out of an optical image
FR2421399A1 (fr) Dispositif pour regler de facon precise l'image d'un objet dans un plan image
FR2507042A1 (fr) Dispositif de determination de l'ecartometrie d'une cible, particulierement insensible aux leurres
JPS5454632A (en) Photometric circuit of photographing apparatus
JPS56162886A (en) Solid state image pickup device
JPS5331151A (en) Automatic focusing device for microscope
JPS5228340A (en) Automatial focus adjustment unit for microscope
JPS56138965A (en) Photoelectric converter
JPS57177133A (en) Focusing indicator of camera
GB1098321A (en) Field lens immersed photosensitive detectors
JPS5539023A (en) Optical displacement meter
JPS5380227A (en) Photographic attachment lens
JPS5752275A (en) Solid image pickup element
JPS57119205A (en) Measurement of sectional shape of plate-shaped body
JPS56107148A (en) Clogging check device for monolithic object
JPS56149181A (en) Solid image pickup device

Legal Events

Date Code Title Description
ST Notification of lapse