GB657116A - Improvements in or relating to electron discharge devices empolying charge storage target electrodes - Google Patents
Improvements in or relating to electron discharge devices empolying charge storage target electrodesInfo
- Publication number
- GB657116A GB657116A GB1820448A GB1820448A GB657116A GB 657116 A GB657116 A GB 657116A GB 1820448 A GB1820448 A GB 1820448A GB 1820448 A GB1820448 A GB 1820448A GB 657116 A GB657116 A GB 657116A
- Authority
- GB
- United Kingdom
- Prior art keywords
- target
- film
- cathode
- electrode
- empolying
- 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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/36—Photoelectric screens; Charge-storage screens
- H01J29/39—Charge-storage screens
- H01J29/41—Charge-storage screens using secondary emission, e.g. for supericonoscope
- H01J29/413—Charge-storage screens using secondary emission, e.g. for supericonoscope for writing and reading of charge pattern on opposite sides of the target, e.g. for superorthicon
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
657,116. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. July 7, 1948, No. 18204. [Class 39 (i)] The capacity of the target electrode is increased by disposing a continuous electronpervious metallic film in close proximity to, but out of contact with, the target electrode. Electrons formed at the photo-cathode 3 by the optical system 5 are accelerated by electrode 6 on to a target 2 comprising a sheet of very thin " conducting" glass, passing through a metallic film 17 carried on a metal mesh or grid 18 with a pitch of 0.001, the film being at a distance from the target 2 of less than the pitch of the mesh. The charge image is scanned from the other side of the target by a low-velocity beam from cathode 7, electrons not restoring the elemental areas of the target electrode to an equilibrium value being returned to a multiplier 14. The film 17 is at a potential of +1 to +5 volts higher than the equilibrium value of the target. The film is applied to the grid 18 by coating the latter with an organic film, sputtering or evaporating a metal on to the organic film which is later removed by solvent action. The metallic film may be used with a target scanned by a high-velocity beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1820448A GB657116A (en) | 1948-07-07 | 1948-07-07 | Improvements in or relating to electron discharge devices empolying charge storage target electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1820448A GB657116A (en) | 1948-07-07 | 1948-07-07 | Improvements in or relating to electron discharge devices empolying charge storage target electrodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB657116A true GB657116A (en) | 1951-09-12 |
Family
ID=10108439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1820448A Expired GB657116A (en) | 1948-07-07 | 1948-07-07 | Improvements in or relating to electron discharge devices empolying charge storage target electrodes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB657116A (en) |
-
1948
- 1948-07-07 GB GB1820448A patent/GB657116A/en not_active Expired
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