GB1074537A - Cathode-heater assembly - Google Patents
Cathode-heater assemblyInfo
- Publication number
- GB1074537A GB1074537A GB49137/63A GB4913763A GB1074537A GB 1074537 A GB1074537 A GB 1074537A GB 49137/63 A GB49137/63 A GB 49137/63A GB 4913763 A GB4913763 A GB 4913763A GB 1074537 A GB1074537 A GB 1074537A
- Authority
- GB
- United Kingdom
- Prior art keywords
- enclosure
- pick
- cathode
- tube
- radiation
- 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
- H01J29/485—Construction of the gun or of parts thereof
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
1,074,537. Television pick-up tubes. GENERAL ELECTRIC CO. Dec. 12, 1963 [Jan. 2, 1963], No. 49137/63. Heading H1D. An electron gun assembly for a picture signal generating tube comprises a cathodeheater enclosure 28 having an electron beam aperture at one end and closed at the other end by a ceramic disc 40 through which pass heater supporting and energizing leads 36. The disc 40 is composed essentially of aluminium oxide and 10 to 15% by weight of one or more of the oxides of cobalt, chromium and magnesium whereby it is opaque to radiation from the heater 32, and prevents such radiation from passing out of enclosure 28 and being reflected towards the photo - sensitive cathode or target of the pick-up tube. As -shown, the electron gun assembly includes apertured control grid 52 and electrode 50 which, with cathode support 24, effectively close the front end of enclosure 28. A rearward extension 29 of enclosure 28 facilitates support of an annular multiplier assembly (not shown) surrounding the gun. The pick-up tube may be an image orthicon or vidicon.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US249091A US3249790A (en) | 1963-01-02 | 1963-01-02 | Pickup tube electron gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1074537A true GB1074537A (en) | 1967-07-05 |
Family
ID=22942023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB49137/63A Expired GB1074537A (en) | 1963-01-02 | 1963-12-12 | Cathode-heater assembly |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3249790A (en) |
| DE (1) | DE1890246U (en) |
| GB (1) | GB1074537A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4268776A (en) * | 1979-02-16 | 1981-05-19 | Raytheon Company | Cathode cup having support flanges sloped symmetrically in opposing axial directions |
| KR940006086Y1 (en) * | 1991-12-24 | 1994-09-08 | 주식회사 금성사 | Bead supporter positioning apparatus for crt electron gun |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2015172A (en) * | 1931-12-21 | 1935-09-24 | Aeg | Indirectly heated cathode |
| US2443916A (en) * | 1947-06-27 | 1948-06-22 | Rca Corp | Cathode-grid assembly for cathode-ray tubes |
| US2540621A (en) * | 1948-02-19 | 1951-02-06 | Rca Corp | Electron gun structure |
| US3029360A (en) * | 1958-04-29 | 1962-04-10 | Rca Corp | Heater wire coating process |
| US3040200A (en) * | 1959-11-24 | 1962-06-19 | Westinghouse Electric Corp | Electron discharge device |
-
1963
- 1963-01-02 US US249091A patent/US3249790A/en not_active Expired - Lifetime
- 1963-12-12 GB GB49137/63A patent/GB1074537A/en not_active Expired
- 1963-12-31 DE DEG29253U patent/DE1890246U/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3249790A (en) | 1966-05-03 |
| DE1890246U (en) | 1964-04-02 |
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