GB2269267B - Focusing means for cathode ray tubes - Google Patents
Focusing means for cathode ray tubesInfo
- Publication number
- GB2269267B GB2269267B GB9317203A GB9317203A GB2269267B GB 2269267 B GB2269267 B GB 2269267B GB 9317203 A GB9317203 A GB 9317203A GB 9317203 A GB9317203 A GB 9317203A GB 2269267 B GB2269267 B GB 2269267B
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode ray
- ray tubes
- focusing means
- focusing
- tubes
- 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.)
- Revoked
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
- H01J29/48—Electron guns
- H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
-
- 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
- H01J29/626—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields
- H01J29/628—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields co-operating with or closely associated to an electron gun
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9317203A GB2269267B (en) | 1991-03-05 | 1992-02-27 | Focusing means for cathode ray tubes |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB919104649A GB9104649D0 (en) | 1991-03-05 | 1991-03-05 | Focusing means for cathode ray tubes |
GB9317203A GB2269267B (en) | 1991-03-05 | 1992-02-27 | Focusing means for cathode ray tubes |
PCT/GB1992/000352 WO1992016007A1 (en) | 1991-03-05 | 1992-02-27 | Focusing means for cathode ray tubes |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9317203D0 GB9317203D0 (en) | 1993-11-17 |
GB2269267A GB2269267A (en) | 1994-02-02 |
GB2269267B true GB2269267B (en) | 1995-02-15 |
Family
ID=26298529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9317203A Revoked GB2269267B (en) | 1991-03-05 | 1992-02-27 | Focusing means for cathode ray tubes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2269267B (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58198819A (en) * | 1982-05-14 | 1983-11-18 | Matsushita Electronics Corp | Cathode ray tube manufacturing method |
JPS5990343A (en) * | 1982-11-15 | 1984-05-24 | Toshiba Corp | Electron gun for cathode ray tube |
EP0178857A2 (en) * | 1984-10-19 | 1986-04-23 | Rca Licensing Corporation | Electron gun |
EP0235975A1 (en) * | 1986-02-12 | 1987-09-09 | Rca Licensing Corporation | CRT and color display system |
EP0319328A2 (en) * | 1987-12-04 | 1989-06-07 | Rank Brimar Limited | Electron guns for cathode ray tubes |
-
1992
- 1992-02-27 GB GB9317203A patent/GB2269267B/en not_active Revoked
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58198819A (en) * | 1982-05-14 | 1983-11-18 | Matsushita Electronics Corp | Cathode ray tube manufacturing method |
JPS5990343A (en) * | 1982-11-15 | 1984-05-24 | Toshiba Corp | Electron gun for cathode ray tube |
EP0178857A2 (en) * | 1984-10-19 | 1986-04-23 | Rca Licensing Corporation | Electron gun |
EP0235975A1 (en) * | 1986-02-12 | 1987-09-09 | Rca Licensing Corporation | CRT and color display system |
EP0319328A2 (en) * | 1987-12-04 | 1989-06-07 | Rank Brimar Limited | Electron guns for cathode ray tubes |
Non-Patent Citations (2)
Title |
---|
Patent Abstracts of Japan vol.8, no.200 (E-226)(1637)13 Sept1984 & JP,A,59 090 343 * |
Patent Abstracts of Japan vol.8, no.44 (E-229)(1481) 25 Feb 1984 & JP,A,58 198 819 * |
Also Published As
Publication number | Publication date |
---|---|
GB2269267A (en) | 1994-02-02 |
GB9317203D0 (en) | 1993-11-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
773K | Patent revoked under sect. 73(2)/1977 |