GB1278235A - Cathode ray tube - Google Patents
Cathode ray tubeInfo
- Publication number
- GB1278235A GB1278235A GB40680/70A GB4068070A GB1278235A GB 1278235 A GB1278235 A GB 1278235A GB 40680/70 A GB40680/70 A GB 40680/70A GB 4068070 A GB4068070 A GB 4068070A GB 1278235 A GB1278235 A GB 1278235A
- Authority
- GB
- United Kingdom
- Prior art keywords
- beams
- lens
- convergence system
- converges
- aug
- 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
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
-
- 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
- H01J29/51—Arrangements for controlling convergence of a plurality of beams by means of electric field only
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
1278235 Colour television tubes SONY CORP 24 Aug 1970 [23 Aug 1969] 40680/70 Heading HID In a multi-beam colour television tube, increased brightness is obtained without increasing the size of the beam and thereby degrading the picture by using a plurality of beams for each colour. In Fig. 3, electrons from a cathode K B are formed into two beams by aligned apertures in grids G1 and G2 and converged by a lens (L S ) on to the centre of the main focusing lens (L M ). The beams follow divergent paths from main lens and pass through an electrostatic convergence system C S which converges the two beams at a common spot on the screen S. The tube is of the three-beam type wherein the two outer groups of beams diverge from the main focusing lens (L M ) and pass through an electrostatic convergence system C which converges the three groups of beams on a parallax grid A G in front of the screen S; in Fig. 3, each group comprises two beams, and in a modification (Figs. 6-8, not shown) each group comprises three beams. The electrostatic convergence system C may be replaced by a magnetic one (Fig. 9, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44066582A JPS4919349B1 (en) | 1969-08-23 | 1969-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1278235A true GB1278235A (en) | 1972-06-21 |
Family
ID=13320078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40680/70A Expired GB1278235A (en) | 1969-08-23 | 1970-08-24 | Cathode ray tube |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3696261A (en) |
| JP (1) | JPS4919349B1 (en) |
| DE (1) | DE2041912A1 (en) |
| FR (1) | FR2062151A5 (en) |
| GB (1) | GB1278235A (en) |
| NL (1) | NL169247C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4044282A (en) * | 1974-10-17 | 1977-08-23 | Balandin Genrikh D | Cathode-ray tube with variable energy of beam electrons |
| US4142133A (en) * | 1976-10-20 | 1979-02-27 | Balandin Genrikh D | Cathode-ray tube with variable energy of beam electrons |
| US4274110A (en) * | 1980-01-08 | 1981-06-16 | Zenith Radio Corporation | Projection television system |
| US4415348A (en) * | 1980-05-29 | 1983-11-15 | Zenith Radio Corporation | Method of manufacture for projection television system |
| US4469987A (en) * | 1981-10-23 | 1984-09-04 | Zenith Electronics Corporation | Means for enhancing brightness of a monochrome CRT without loss of resolution |
| JPH05135709A (en) * | 1991-11-14 | 1993-06-01 | Sony Corp | Cathode-ray tube |
| US20020089277A1 (en) * | 2001-01-11 | 2002-07-11 | Thomas Skupien | Beam forming region having an array of emitting areas |
| JP2002270112A (en) * | 2001-03-13 | 2002-09-20 | Sony Corp | Electron gun, cathode-ray tube and projector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB469127A (en) * | 1936-01-30 | 1937-07-20 | Erich Kinne | Method of producing television pictures by means of electric discharge tubes |
| CA523198A (en) * | 1951-02-15 | 1956-03-27 | Electric And Musical Industries Limited | Cathode ray tubes |
| BE514227A (en) * | 1951-09-26 | |||
| US3065295A (en) * | 1958-12-24 | 1962-11-20 | Gen Electric | Electron beam system |
| GB1195598A (en) * | 1967-01-14 | 1970-06-17 | Sony Corp | Cathode Ray Tube |
-
1969
- 1969-08-23 JP JP44066582A patent/JPS4919349B1/ja active Pending
-
1970
- 1970-08-21 NL NLAANVRAGE7012445,A patent/NL169247C/en not_active IP Right Cessation
- 1970-08-24 FR FR7030945A patent/FR2062151A5/fr not_active Expired
- 1970-08-24 DE DE19702041912 patent/DE2041912A1/en not_active Ceased
- 1970-08-24 GB GB40680/70A patent/GB1278235A/en not_active Expired
- 1970-08-24 US US66283A patent/US3696261A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2062151A5 (en) | 1971-06-25 |
| DE2041912A1 (en) | 1971-03-04 |
| NL169247B (en) | 1982-01-18 |
| US3696261A (en) | 1972-10-03 |
| JPS4919349B1 (en) | 1974-05-16 |
| NL169247C (en) | 1982-06-16 |
| NL7012445A (en) | 1971-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |