FR2253267A1 - - Google Patents
Info
- Publication number
- FR2253267A1 FR2253267A1 FR7438566A FR7438566A FR2253267A1 FR 2253267 A1 FR2253267 A1 FR 2253267A1 FR 7438566 A FR7438566 A FR 7438566A FR 7438566 A FR7438566 A FR 7438566A FR 2253267 A1 FR2253267 A1 FR 2253267A1
- Authority
- FR
- France
- 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
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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
-
- 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
- H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
-
- 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
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/867—Means associated with the outside of the vessel for shielding, e.g. magnetic shields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
- H01J2229/003—Preventing or cancelling fields entering the enclosure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
- H01J2229/0046—Preventing or cancelling fields within the enclosure
- H01J2229/0053—Demagnetisation
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US420324A US3867668A (en) | 1973-11-29 | 1973-11-29 | Cathode-ray tube having an internal-external magnetic shield and degaussing combination |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2253267A1 true FR2253267A1 (pt) | 1975-06-27 |
FR2253267B1 FR2253267B1 (pt) | 1979-07-06 |
Family
ID=23665997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7438566A Expired FR2253267B1 (pt) | 1973-11-29 | 1974-11-25 |
Country Status (12)
Country | Link |
---|---|
US (1) | US3867668A (pt) |
JP (1) | JPS5426418B2 (pt) |
BE (1) | BE822727A (pt) |
BR (1) | BR7409924A (pt) |
CA (1) | CA1017400A (pt) |
DE (1) | DE2456315A1 (pt) |
ES (1) | ES432172A1 (pt) |
FR (1) | FR2253267B1 (pt) |
GB (1) | GB1459656A (pt) |
IT (1) | IT1027576B (pt) |
NL (1) | NL7415534A (pt) |
PL (1) | PL100481B1 (pt) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5527957Y2 (pt) * | 1974-05-20 | 1980-07-04 | ||
JPS52120518U (pt) * | 1976-03-02 | 1977-09-13 | ||
JPS5413253A (en) * | 1977-07-01 | 1979-01-31 | Hitachi Ltd | Color receiving tube |
JPS5569938A (en) * | 1978-11-21 | 1980-05-27 | Toshiba Corp | Color picture tube device |
US4243913A (en) * | 1979-08-29 | 1981-01-06 | Rca Corporation | Color picture tube magnetic shielding and degaussing structure |
US4556821A (en) * | 1984-03-15 | 1985-12-03 | Rca Corporation | Color image display system having an improved external magnetic shield |
US4943755A (en) * | 1985-05-20 | 1990-07-24 | Mitsubishi Denki Kabushiki Kaisha | Magnetic shielding with constant-current coils for CRT |
JPH07107831B2 (ja) * | 1986-12-26 | 1995-11-15 | ソニー株式会社 | 陰極線管 |
JPS63221790A (ja) * | 1987-03-11 | 1988-09-14 | Sony Corp | 陰極線管 |
US4767969A (en) * | 1987-05-26 | 1988-08-30 | Honeywell, Inc. | RF emission shield for CRT displays |
US4996461A (en) * | 1989-09-07 | 1991-02-26 | Hughes Aircraft Company | Closed loop bucking field system |
US5081392A (en) * | 1990-09-11 | 1992-01-14 | Rca Thomson Licensing Corporation | Color picture tube having an internal magnetic shield |
US5097174A (en) * | 1990-11-23 | 1992-03-17 | Thomson Consumer Electronics, Inc. | Color picture tube having an improved internal magnetic shield |
ATE142047T1 (de) * | 1991-03-08 | 1996-09-15 | Philips Electronics Nv | Farbbildwiedergaberöhre mit innerer magnetischer abschirmkappe |
US5180947A (en) * | 1991-04-23 | 1993-01-19 | Alliant Techsystems Inc. | Shielded cathode ray tube |
US5229689A (en) * | 1991-05-14 | 1993-07-20 | Apple Computer, Inc. | Electrostatic shield for nearfield alternating electrical field emission reduction in a CRT display |
KR100234168B1 (ko) * | 1997-06-28 | 1999-12-15 | 손욱 | 칼라 음극선관용 인너실드 |
KR20030010096A (ko) * | 2001-07-25 | 2003-02-05 | 엘지.필립스디스플레이(주) | 칼라 음극선관의 외부 자계 차폐구조체 |
US6686695B2 (en) * | 2001-10-16 | 2004-02-03 | Samsung Sdi Co., Ltd. | Cathode ray tube having degaussing coil for minimizing variations in landing of electron beam |
US11177114B1 (en) * | 2020-09-15 | 2021-11-16 | ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | Electrode arrangement, contact assembly for an electrode arrangement, charged particle beam device, and method of reducing an electrical field strength in an electrode arrangement |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3317781A (en) * | 1963-12-19 | 1967-05-02 | Rca Corp | Television degaussing apparatus |
US3322998A (en) * | 1964-08-31 | 1967-05-30 | Rca Corp | Color purity correcting apparatus for colored television picture tubes |
US3431454A (en) * | 1967-07-31 | 1969-03-04 | Zenith Radio Corp | Cathode-ray tube magnetic shield and tube mount |
US3564329A (en) * | 1968-10-28 | 1971-02-16 | Philco Ford Corp | Shielding apparatus of metal plates strap-mounted on cathode ray tube for shielding against external magnetic fields |
US3549932A (en) * | 1969-04-04 | 1970-12-22 | Motorola Inc | Color television tube with shadow mask assembly provided with shield for reducing x-ray radiation and the effect of stray magnetic fields |
US3571652A (en) * | 1969-04-14 | 1971-03-23 | Sony Corp | Degaussing device for color picture tube having parallel-slitted beam-selecting grid |
US3576395A (en) * | 1969-05-21 | 1971-04-27 | Sylvania Electric Prod | Integral support and magentic shielding means for cathode-ray |
-
1973
- 1973-11-29 US US420324A patent/US3867668A/en not_active Expired - Lifetime
-
1974
- 1974-10-10 IT IT28301/74A patent/IT1027576B/it active
- 1974-10-30 CA CA212,611A patent/CA1017400A/en not_active Expired
- 1974-11-20 GB GB5026974A patent/GB1459656A/en not_active Expired
- 1974-11-22 ES ES432172A patent/ES432172A1/es not_active Expired
- 1974-11-25 FR FR7438566A patent/FR2253267B1/fr not_active Expired
- 1974-11-27 JP JP13696574A patent/JPS5426418B2/ja not_active Expired
- 1974-11-27 BR BR9924/74A patent/BR7409924A/pt unknown
- 1974-11-28 NL NL7415534A patent/NL7415534A/xx not_active Application Discontinuation
- 1974-11-28 BE BE150969A patent/BE822727A/xx unknown
- 1974-11-28 DE DE19742456315 patent/DE2456315A1/de not_active Ceased
- 1974-11-29 PL PL1974176076A patent/PL100481B1/pl unknown
Also Published As
Publication number | Publication date |
---|---|
NL7415534A (nl) | 1975-06-02 |
DE2456315A1 (de) | 1975-06-05 |
PL100481B1 (pl) | 1978-10-31 |
JPS50114927A (pt) | 1975-09-09 |
GB1459656A (en) | 1976-12-22 |
FR2253267B1 (pt) | 1979-07-06 |
CA1017400A (en) | 1977-09-13 |
ES432172A1 (es) | 1976-09-16 |
US3867668A (en) | 1975-02-18 |
BR7409924A (pt) | 1976-05-25 |
BE822727A (fr) | 1975-03-14 |
JPS5426418B2 (pt) | 1979-09-04 |
IT1027576B (it) | 1978-12-20 |
AU7567874A (en) | 1976-05-27 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |