GB487940A - Improvements in or relating to television transmitters - Google Patents
Improvements in or relating to television transmittersInfo
- Publication number
- GB487940A GB487940A GB3546636A GB3546636A GB487940A GB 487940 A GB487940 A GB 487940A GB 3546636 A GB3546636 A GB 3546636A GB 3546636 A GB3546636 A GB 3546636A GB 487940 A GB487940 A GB 487940A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- mosaic
- grid
- photo
- image
- 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
- H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
- H01J31/30—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at anode potential, e.g. iconoscope
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
487,940. Cathode-ray tubes. LINDEMANN, F. A. Dec. 28, 1936, No. 35466. [Class 39 (i)] For generating an image signal in a television transmitter a photo-electric mosaic is formed on a plate 2 of low conductivity such as soda glass ; a grid 4 is placed on the side of the plate remote from the mosaic and the plate is scanned through the grid by a beam from a gun 5. The potential image of the mosaic formed on the back of the plate controls the flow of electrons from the beam to the grid, those electrons not passing to the grid being taken up by the plate to assist in its return to datum potential. A transparent anode 1 collects the photo-electrons emitted from the mosaic. If a separate photo-electric cathode is used to form an electron image for transfer to the plate, the latter need not be a mosaic but a plate of low conductivity. The transverse conductivity of the plate will be less than that through the plate ; the latter may be increased by inclusion of particles as described in Specification 482,959. The grid may be replaced by a collecting ring. The charge image may be produced by secondary emission, a mosaic being then dispensed with. Additional mosaic elements may be deposited on the side of the sheet 2 remote from the anode 1 ; these additional elements may be coated to produce secondary emission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3546636A GB487940A (en) | 1936-12-28 | 1936-12-28 | Improvements in or relating to television transmitters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3546636A GB487940A (en) | 1936-12-28 | 1936-12-28 | Improvements in or relating to television transmitters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB487940A true GB487940A (en) | 1938-06-28 |
Family
ID=10378035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3546636A Expired GB487940A (en) | 1936-12-28 | 1936-12-28 | Improvements in or relating to television transmitters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB487940A (en) |
-
1936
- 1936-12-28 GB GB3546636A patent/GB487940A/en not_active Expired
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