GB335958A - Improvements in or relating to television - Google Patents
Improvements in or relating to televisionInfo
- Publication number
- GB335958A GB335958A GB17116/29A GB1711629A GB335958A GB 335958 A GB335958 A GB 335958A GB 17116/29 A GB17116/29 A GB 17116/29A GB 1711629 A GB1711629 A GB 1711629A GB 335958 A GB335958 A GB 335958A
- Authority
- GB
- United Kingdom
- Prior art keywords
- potassium
- cathode
- layer
- anode
- photoelectric
- 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
- 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
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/265—Image pick-up tubes having an input of visible light and electric output with light spot scanning
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Secondary Cells (AREA)
Abstract
335,958. Henroteau, F. C. P. June 4, 1929. Vacuum tubes.-A photoelectric cell for television comprises an evacuated vessel 1, Fig. 1, a cathode 4, an anode 7 and a window 1<a>. The cathode consists of an earthed aluminium plate 2<a>, a layer 3 of insulating material such as aluminium oxide and a surface 4 of potassium hydride containing small globules of pure potassium or other photoelectric material. A grid 5 may be kept charged by a battery 6 and an anode 7 is connected to an amplifying system. The inner surface of the vessel 1 is partly coated with a layer 21 of potassium. An alternative form of cathode, Fig. 7, consists of a glass plate 100 having a number of cups filled with a, liquid alloy such as potassium and sodium. The grid 102 rests on the glass surface and is capable of various connections. The anode 103 and the photoelectric layer 108 are arranged as in Fig. 1. The surface 4 in Fig. 1 may be prepared as described in Specification 255,057 or by bombarding a thin layer of potassium, sodium, caesium or rubidium hydride with cathode rays which transform elementary areas into groups of fine globules of metal. Specification 335,995 is referred to.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US367084A US1903112A (en) | 1929-05-29 | 1929-05-29 | Television |
| GB17116/29A GB335958A (en) | 1929-06-04 | 1929-06-04 | Improvements in or relating to television |
| FR682241D FR682241A (en) | 1929-06-04 | 1929-09-24 | Improvements in television processes and devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB17116/29A GB335958A (en) | 1929-06-04 | 1929-06-04 | Improvements in or relating to television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB335958A true GB335958A (en) | 1930-10-06 |
Family
ID=10089533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17116/29A Expired GB335958A (en) | 1929-05-29 | 1929-06-04 | Improvements in or relating to television |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1903112A (en) |
| FR (1) | FR682241A (en) |
| GB (1) | GB335958A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2773992A (en) * | 1953-06-17 | 1956-12-11 | Itt | Display amplifier and method of making same |
-
1929
- 1929-05-29 US US367084A patent/US1903112A/en not_active Expired - Lifetime
- 1929-06-04 GB GB17116/29A patent/GB335958A/en not_active Expired
- 1929-09-24 FR FR682241D patent/FR682241A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1903112A (en) | 1933-03-28 |
| FR682241A (en) | 1930-05-24 |
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