GB1258529A - - Google Patents
Info
- Publication number
- GB1258529A GB1258529A GB1258529DA GB1258529A GB 1258529 A GB1258529 A GB 1258529A GB 1258529D A GB1258529D A GB 1258529DA GB 1258529 A GB1258529 A GB 1258529A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- lens
- potential
- centre
- dec
- 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
- H01J29/58—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- 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
Abstract
1,258,529. Electron lenses. SONY CORP. 19 Dec., 1969 [19 Dec., 1968], No. 62128/69. Heading H1D. A focusing lens for a cathode-ray display tube comprising outer cylindrical electrodes 17a and 18a, Fig. 2, operated at a high potential and an intermediate electrode system 16a operated at a generally lower potential, is characterized in that the intermediate system includes at least three annular electrodes of which the centre one is at a higher potential. In the system shown, there are exactly three electrodes 30-32 of which the centre one 31 is connected to the electrodes 17a and 18a, and the outer electrodes 30 and 32 are maintained at a lower potential. This reduces the potential gradient of the lens field, thereby reducing spherical aberration. The lens may be used in a colour display tube of the type wherein three coplanar beams are directed through the centre of the lens and are subsequently converged on a shadow mask or grill by means of electrostatic deflection plates (Fig. 4, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP43093590A JPS4812386B1 (en) | 1968-12-19 | 1968-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1258529A true GB1258529A (en) | 1971-12-30 |
Family
ID=14086494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1258529D Expired GB1258529A (en) | 1968-12-19 | 1969-12-19 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3652896A (en) |
| JP (1) | JPS4812386B1 (en) |
| DE (1) | DE1963809B2 (en) |
| FR (1) | FR2026596A1 (en) |
| GB (1) | GB1258529A (en) |
| NL (1) | NL164422C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51142993A (en) * | 1975-06-04 | 1976-12-08 | Japan Radio Co Ltd | Elimination of noise caused by reflected waves |
| JPS545374A (en) * | 1977-06-15 | 1979-01-16 | Hitachi Ltd | Electronic gun |
| JPS5464189U (en) * | 1977-10-13 | 1979-05-07 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2351757A (en) * | 1941-07-29 | 1944-06-20 | Bell Telephone Labor Inc | Electron discharge device |
| US3501673A (en) * | 1968-04-29 | 1970-03-17 | Stromberg Datagraphix Inc | Variable magnification cathode ray tube |
-
1968
- 1968-12-19 JP JP43093590A patent/JPS4812386B1/ja active Pending
-
1969
- 1969-08-26 US US853169A patent/US3652896A/en not_active Expired - Lifetime
- 1969-12-19 FR FR6944234A patent/FR2026596A1/fr not_active Withdrawn
- 1969-12-19 NL NL6919121.A patent/NL164422C/en not_active IP Right Cessation
- 1969-12-19 GB GB1258529D patent/GB1258529A/en not_active Expired
- 1969-12-19 DE DE19691963809 patent/DE1963809B2/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| US3652896A (en) | 1972-03-28 |
| NL164422C (en) | 1980-12-15 |
| JPS4812386B1 (en) | 1973-04-20 |
| DE1963809B2 (en) | 1972-07-13 |
| NL6919121A (en) | 1970-06-23 |
| DE1963809A1 (en) | 1970-09-17 |
| NL164422B (en) | 1980-07-15 |
| FR2026596A1 (en) | 1970-09-18 |
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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 |