GB480672A - Improvements in or relating to cathode ray tubes for television - Google Patents
Improvements in or relating to cathode ray tubes for televisionInfo
- Publication number
- GB480672A GB480672A GB17637/36A GB1763736A GB480672A GB 480672 A GB480672 A GB 480672A GB 17637/36 A GB17637/36 A GB 17637/36A GB 1763736 A GB1763736 A GB 1763736A GB 480672 A GB480672 A GB 480672A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- image
- anode
- screen
- ray 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.)
- 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
Abstract
480,672. Cathode-ray tubes. RADIOAKT.-GES. D. S. LOEWE. June 25, 1936, No. 17637. Convention date, June 25, 1935. [Class 39 (i)] In a television receiving tube an image of the cathode or of a cross-sectional plane adjacent the cathode other than an aperture in a diaphragm is produced on the screen by two collecting lenses, the first of which is too weak to produce an image. As shown, the gun comprises a cathode 2, an anode 3 and a Wehnelt cylinder 4. The first lens consists of two cylinders 5, 6, of which the former may be connected to the cathode and the latter to the anode 3. An image of the cathode just beyond the fluorescent screen 9 is produced, and the image is brought onto the screen by a second lens 8 set up by cylinders 6 and 10. The anode 3 may have a cylindrical portion extending towards the cylinder 5, and the Wehnelt cylinder may have a front extension. The dimensioning of the lens systems is discussed in detail. Specifications 442,511 and 442,724 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE203820X | 1935-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB480672A true GB480672A (en) | 1938-02-25 |
Family
ID=5778568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17637/36A Expired GB480672A (en) | 1935-06-25 | 1936-06-25 | Improvements in or relating to cathode ray tubes for television |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2123161A (en) |
| BE (1) | BE416227A (en) |
| CH (1) | CH203820A (en) |
| FR (1) | FR808566A (en) |
| GB (1) | GB480672A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2850656A1 (en) * | 1977-11-22 | 1979-05-23 | Tokyo Shibaura Electric Co | Electron gun for in-line colour crt |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2792515A (en) * | 1951-06-22 | 1957-05-14 | Thomas Electrics Inc | Cathode ray tube |
| US2930931A (en) * | 1955-09-28 | 1960-03-29 | Kaiser Ind Corp | Electronic device |
| JPS5543660Y2 (en) * | 1972-04-12 | 1980-10-14 | ||
| US3863091A (en) * | 1972-12-29 | 1975-01-28 | Hitachi Ltd | Electron gun assembly with improved unitary lens system |
-
0
- BE BE416227D patent/BE416227A/xx unknown
-
1936
- 1936-06-18 CH CH203820D patent/CH203820A/en unknown
- 1936-06-22 US US86608A patent/US2123161A/en not_active Expired - Lifetime
- 1936-06-24 FR FR808566D patent/FR808566A/en not_active Expired
- 1936-06-25 GB GB17637/36A patent/GB480672A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2850656A1 (en) * | 1977-11-22 | 1979-05-23 | Tokyo Shibaura Electric Co | Electron gun for in-line colour crt |
Also Published As
| Publication number | Publication date |
|---|---|
| FR808566A (en) | 1937-02-10 |
| CH203820A (en) | 1939-03-31 |
| US2123161A (en) | 1938-07-05 |
| BE416227A (en) |
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