GB679201A - Improvements relating to cathode ray tubes - Google Patents
Improvements relating to cathode ray tubesInfo
- Publication number
- GB679201A GB679201A GB2626249A GB2626249A GB679201A GB 679201 A GB679201 A GB 679201A GB 2626249 A GB2626249 A GB 2626249A GB 2626249 A GB2626249 A GB 2626249A GB 679201 A GB679201 A GB 679201A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- end wall
- shield
- conductor
- cathode
- 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
- H01J29/92—Means forming part of the tube for the purpose of providing electrical connection to it
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
679,201. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Sept. 26, 1950 [Oct. 13, 1949]. Class 39 (i). A cathode-ray tube for a Schmidt television projection system has an electrical conductor 5 connected to the final anode passing between the envelope 1 and a separate end wall 2, and the envelope is extended to form an annular shield 3 of insulating material shielding scanning coils 6 near the end wall 2 from the said conductor. The shield may be an integral or separately sealed extension of the conical part of the envelope, of the same angle or flared with respect to it, or may extend rearwardly of the end wall 2 (Fig. 4). The conductor 5 may be an annular coating of Liquid Bright Platinum paint extending outwardly from a graphite final anode 4, or curving round the rearwardly extending shield (Fig. 4) so that a metal band or spring clips may engage it, the paint being burned in before or during the sealing on of the end wall 2. The anode 4 may be an extension of an aluminium reflecting backing of the fluorescent screen, and formed at the same time as the backing by the evaporation of aluminium within the envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2626249A GB679201A (en) | 1949-10-13 | 1949-10-13 | Improvements relating to cathode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2626249A GB679201A (en) | 1949-10-13 | 1949-10-13 | Improvements relating to cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB679201A true GB679201A (en) | 1952-09-17 |
Family
ID=10240878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2626249A Expired GB679201A (en) | 1949-10-13 | 1949-10-13 | Improvements relating to cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB679201A (en) |
-
1949
- 1949-10-13 GB GB2626249A patent/GB679201A/en not_active Expired
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