GB548337A - Improvements in photo-sensitive electrodes - Google Patents
Improvements in photo-sensitive electrodesInfo
- Publication number
- GB548337A GB548337A GB6969/41A GB696941A GB548337A GB 548337 A GB548337 A GB 548337A GB 6969/41 A GB6969/41 A GB 6969/41A GB 696941 A GB696941 A GB 696941A GB 548337 A GB548337 A GB 548337A
- Authority
- GB
- United Kingdom
- Prior art keywords
- photo
- electrode
- sensitive
- transparent
- sheet
- 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
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 4
- 239000010410 layer Substances 0.000 abstract 3
- 239000010445 mica Substances 0.000 abstract 3
- 229910052618 mica group Inorganic materials 0.000 abstract 3
- 239000011241 protective layer Substances 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052697 platinum Inorganic materials 0.000 abstract 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- XBJJRSFLZVLCSE-UHFFFAOYSA-N barium(2+);diborate Chemical compound [Ba+2].[Ba+2].[Ba+2].[O-]B([O-])[O-].[O-]B([O-])[O-] XBJJRSFLZVLCSE-UHFFFAOYSA-N 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- 229910001610 cryolite Inorganic materials 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000010422 painting Methods 0.000 abstract 1
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
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
- H01J29/43—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
548,337. Photo-sensitive electrodes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 30, 1941, No. 6969. Convention date, June 1, 1940. [Class 39 (i)] In a photo-sensitive electrode including a rigid transparent insulating sheet having deposited on one side a photo-sensitive mosaic and on the other a transparent metallic layer, a transparent protective insulating layer is either deposited on, or mounted closely adjacent to, the metallic layer. In the form shown, the photo-sensitive electrode comprises a sheet of mica 2 about 0.002 inches thick to which are applied two metallic ribbons 6, 6a, for example by painting on a colloidal solution of platinum chloride and subsequently heating to 400 C. to reduce the platinum. A transparent film 4 of chromium, platinum, tungsten, or other metal is then evaporated on to the mica and subsequently covered with a film of evaporated quartz, barium borate, cryolite or other material to form the transparent protective layer 5a Alternatively, the protective layer may be formed of a glass sheet 5 with the corners 7, 7a cut away to allow connections to be made to the metal ribbons 6, 6a, and held by a frame or clamps. The photosensitive mosaic 3 is formed on the other surface of the mica sheet, preferably after the electrode is mounted in the tube, and may consist of caesiated silver globules or a film of photo-sensitive material so thin that the molecules or small groups of molecules are physically separate from one another. The electrode is shown mounted in a television transmission tube comprising an electron gun consisting of a cathode 13, control electrode 14, and accelerating electrodes 15, 16 together with a shielding electrode 18 and a collector electrode 19 for electrons which do not reach the mosaic surface 3. The beam is focused by a coil 11 and deflected by deflecting plates 17 and a coil 12. The protective layer may be formed by the end wall of the tube. Specifications 462,550 and 506,143 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US338310A US2289921A (en) | 1940-06-01 | 1940-06-01 | Photosensitive electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB548337A true GB548337A (en) | 1942-10-06 |
Family
ID=23324276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6969/41A Expired GB548337A (en) | 1940-06-01 | 1941-05-30 | Improvements in photo-sensitive electrodes |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2289921A (en) |
| GB (1) | GB548337A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2504972A (en) * | 1946-04-29 | 1950-04-25 | Farnsworth Res Corp | Picture and sound transmitter |
| GB655291A (en) * | 1948-11-22 | 1951-07-18 | Cinema Television Ltd | Improvements in or relating to television pick-up tubes or the like |
| BE516023A (en) * | 1951-12-05 | |||
| US2727118A (en) * | 1951-12-29 | 1955-12-13 | Westinghouse Electric Corp | Heat sensitive resistor |
| US2748288A (en) * | 1953-10-01 | 1956-05-29 | Rca Corp | Electron photography plate construction |
| US2818354A (en) * | 1954-12-17 | 1957-12-31 | Pritikin | Electrical resistor and method of making same |
-
1940
- 1940-06-01 US US338310A patent/US2289921A/en not_active Expired - Lifetime
-
1941
- 1941-05-30 GB GB6969/41A patent/GB548337A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2289921A (en) | 1942-07-14 |
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