GB809607A - Improvements in or relating to electron discharge devices - Google Patents
Improvements in or relating to electron discharge devicesInfo
- Publication number
- GB809607A GB809607A GB9796/56A GB979656A GB809607A GB 809607 A GB809607 A GB 809607A GB 9796/56 A GB9796/56 A GB 9796/56A GB 979656 A GB979656 A GB 979656A GB 809607 A GB809607 A GB 809607A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- catches
- chamber
- magnets
- march
- 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
- 229910052792 caesium Inorganic materials 0.000 abstract 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000696 magnetic material Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
- H01J31/503—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output with an electromagnetic electron-optic system
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Lasers (AREA)
Abstract
809,607. Processing cathodes. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 21, 1957 [March 29, 1956], No. 9796/56. Class 39(1). The formation of a photo-sensitive surface by condensation of caesium vapour on a cathode plate 4 is carried out in a vessel 1 having two chambers 2, 3 connected by way of an aperture in the metal member 5. The plate 4 is held securely against the flange 5 by catches 9 of magnetic material which are spring loaded by coil'springs 10 arranged in side tubes 11. Caesium vapour is introduced into the chamber 3 and condenses on the surface 6 of plate 4 but is substantially prevented from passing into chamber 2 and condensing on electrodes therein by a coating of collodial graphite on the abutting surfaces of plate 4 and flange 5. After suitable heat treatment the tube 12 is sealed off. The catches 9 are then released with the aid of the magnets 13 and the plate 4 is turned over by careful shaking of the tube so that the coated surface 6 faces into chamber 2 after which the magnets 13 are removed so that the catches re-engage the plate 4 thus holding the photo-cathode in its operative position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6171/58A GB860551A (en) | 1958-02-26 | 1958-02-26 | Improvements in or relating to electron discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB809607A true GB809607A (en) | 1959-02-25 |
Family
ID=9809706
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9796/56A Expired GB809607A (en) | 1958-02-26 | 1956-03-29 | Improvements in or relating to electron discharge devices |
| GB6171/58A Expired GB860551A (en) | 1958-02-26 | 1958-02-26 | Improvements in or relating to electron discharge devices |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6171/58A Expired GB860551A (en) | 1958-02-26 | 1958-02-26 | Improvements in or relating to electron discharge devices |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2899576A (en) |
| DE (1) | DE1040139B (en) |
| GB (2) | GB809607A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL236730A (en) * | 1958-03-06 | |||
| NL240623A (en) * | 1958-07-02 | |||
| NL253424A (en) * | 1959-07-06 | |||
| US3329853A (en) * | 1965-06-16 | 1967-07-04 | Rca Corp | Image orthicon with cesium getter adjacent electron multiplier |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE695498C (en) * | 1935-06-27 | 1940-08-26 | Aeg | Process for the production of photocathodes and fluorescent screens in a vacuum vessel |
| GB469079A (en) * | 1936-01-15 | 1937-07-15 | Hans Gerhard Lubszynski | Improvements in or relating to electron discharge devices comprising photo-electrically-active electrodes |
| US2231698A (en) * | 1938-06-10 | 1941-02-11 | Rca Corp | Electron multiplier |
| US2283413A (en) * | 1940-08-03 | 1942-05-19 | Robert J Cashman | Phototube and method of manufacture |
| US2374287A (en) * | 1941-11-19 | 1945-04-24 | Westinghouse Electric & Mfg Co | Photoelectric device |
-
0
- US US2899576D patent/US2899576A/en not_active Expired - Lifetime
-
1956
- 1956-03-29 GB GB9796/56A patent/GB809607A/en not_active Expired
-
1957
- 1957-03-27 DE DEN13468A patent/DE1040139B/en active Pending
-
1958
- 1958-02-26 GB GB6171/58A patent/GB860551A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1040139B (en) | 1958-10-02 |
| US2899576A (en) | 1959-08-11 |
| GB860551A (en) | 1961-02-08 |
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