GB318299A - Improvements in or relating to photo-electric plates - Google Patents
Improvements in or relating to photo-electric platesInfo
- Publication number
- GB318299A GB318299A GB1823529A GB1823529A GB318299A GB 318299 A GB318299 A GB 318299A GB 1823529 A GB1823529 A GB 1823529A GB 1823529 A GB1823529 A GB 1823529A GB 318299 A GB318299 A GB 318299A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slab
- face
- conductors
- adjacent
- selenium
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
-
- 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
-
- 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
-
- 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
- H01J29/43—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope
- H01J29/435—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope with a matrix of conductors traversing the target
-
- 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
Abstract
318,299. Pollak, J. E., (Associated Telephone & Telegraph Co.). June 1, 1928. Divided on 318,565. Vacuum tubes.-A photo-electric, cell for use in television systems or the like consists of an insulating slab having on or adjacent to one face a coating of material which becomes conductive under the influence of cathode ravs and on or adjacent to the other face a material whose conductivity varies with the intensity of light incident thereon, the two faces being connected by a large number of individual conductors. A slab of insulating material 36, Fig. 1, has conductors 37 extending through the slab from face to face and conductors 39, 38 extending from each face part way into the slab, which conductors form two grids connected in a battery circuit as shown. One face of the slab is coated with material 41 responsive to cathode rays such as selenium or potassium hydride, the other face being coated with light-sensitive material 40 such as selenium. The image is formed on this coating, which is not thicker than the depth of effective penetration by light, while the other face is scanned by cathode rays which thus activate the coating and complete the battery circuit allowing currents to flow dependent on the resistance of the elemental area of selenium on the other face of the slab. The slab may be of glass, the conductors being fine wires traversing the thickness of the slab, and the grids may consist of fine mesh screens 43, 44, Fig. 5, adjacent to the faces, or one grid 38, Fig. 6, may be embedded in the slab and the other grid 43 adjacent. The slab may be constructed by winding a number of glass strips with wire, Fig. 8, mounting them together with unwound plates separating the wound plates, Fig. 9, the whole being fused, the portions of the face containing wire not normal to the surface being ground off. Or a coil of insulating wire may be treated with varnish, and when hard, cut as shown by the dotted lines in Fig. 7, thus obtaining eight slabs. Specification 318,565 is referred to.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US705413A US2013162A (en) | 1924-04-10 | 1924-04-10 | Television |
| GB16105/28A GB318565A (en) | 1928-01-03 | 1928-06-01 | Improvements in systems and apparatus for television |
| GB1823529A GB318299A (en) | 1928-06-01 | 1928-06-01 | Improvements in or relating to photo-electric plates |
| FR655720D FR655720A (en) | 1928-01-03 | 1928-06-14 | Improvements to television sets |
| US434903A US1935650A (en) | 1928-01-03 | 1930-03-11 | Television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1823529A GB318299A (en) | 1928-06-01 | 1928-06-01 | Improvements in or relating to photo-electric plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB318299A true GB318299A (en) | 1929-09-02 |
Family
ID=10108965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1823529A Expired GB318299A (en) | 1924-04-10 | 1928-06-01 | Improvements in or relating to photo-electric plates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB318299A (en) |
-
1928
- 1928-06-01 GB GB1823529A patent/GB318299A/en not_active Expired
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