GB548235A - Improvements in cathode ray tubes - Google Patents
Improvements in cathode ray tubesInfo
- Publication number
- GB548235A GB548235A GB7501/41A GB750141A GB548235A GB 548235 A GB548235 A GB 548235A GB 7501/41 A GB7501/41 A GB 7501/41A GB 750141 A GB750141 A GB 750141A GB 548235 A GB548235 A GB 548235A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- envelope
- cathode
- partition
- carried
- 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
- H01J29/48—Electron guns
Abstract
548,235. Cathode-ray tubes. STANDARD TELEPHONES & CABLES, Ltd. June 13, 1941, No. 7501. Convention date, June 25, 1940. [Class 39 (i)] In a cathode-ray tube a concave cathode 33 is mounted on a plate 35 within an anode 28 provided with apertured partitions 36, 37, 47 ; a cross-over of the beam is formed between the partition 36, 37 and a modulator electrode 29 is situated at the cross-over. Insulating rings 43, 44 support the electrode 29, the lead to which passes through a hole in the anode 28. A further anode 30 with apertured partition 50 is carried by an insulating ring 48 on the first assembly and extends into an anode 18 carried by an extension 19 of the envelope 10; the anode 18 has spring fingers bearing on a graphite coating on the envelope and extending towards the fluorescent screen. Two pairs of deflecting plates 20 are supported from the anode 18 the leads 22 from the plates passing terminals 23 in an annular base under the recessed part of the envelope. In a modification a single anode 53, Fig. 4, is used beyond the partition 47 and a target 56 is carried by a mica disc 55 from arms 54. Reference is made to U.S.A, Specification 2,141,387.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US342194A US2301490A (en) | 1940-06-25 | 1940-06-25 | Electronic discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB548235A true GB548235A (en) | 1942-10-01 |
Family
ID=23340770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7501/41A Expired GB548235A (en) | 1940-06-25 | 1941-06-13 | Improvements in cathode ray tubes |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2301490A (en) |
| GB (1) | GB548235A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR958882A (en) * | 1940-05-02 | 1950-03-21 | ||
| BE483238A (en) * | 1942-12-01 | |||
| US2452062A (en) * | 1943-07-29 | 1948-10-26 | Raytheon Mfg Co | Electrical discharge tube |
| GB570672A (en) * | 1943-08-19 | 1945-07-17 | Gerhard Liebmann | Improvements in or relating to cathode ray tubes |
| US2421234A (en) * | 1944-08-31 | 1947-05-27 | Gen Electric | Electron lens assembly |
| FR926604A (en) * | 1946-03-12 | 1947-10-07 | Csf | Improvements to independent electrostatic lenses |
| US2540621A (en) * | 1948-02-19 | 1951-02-06 | Rca Corp | Electron gun structure |
| US2753484A (en) * | 1952-07-29 | 1956-07-03 | Itt | Signal indicating device |
| US2852716A (en) * | 1954-07-14 | 1958-09-16 | Gen Electric | Cathode ray tube and electron gun therefor |
| GB805785A (en) * | 1955-06-10 | 1958-12-10 | English Electric Valve Co Ltd | Improvements in or relating to electron gun structures for cathode ray tubes |
| US2945143A (en) * | 1958-04-03 | 1960-07-12 | Shapiro Jack | Compact cathode ray tube |
-
1940
- 1940-06-25 US US342194A patent/US2301490A/en not_active Expired - Lifetime
-
1941
- 1941-06-13 GB GB7501/41A patent/GB548235A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2301490A (en) | 1942-11-10 |
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