GB599151A - Improvements in or relating to photocells - Google Patents
Improvements in or relating to photocellsInfo
- Publication number
- GB599151A GB599151A GB15300/45A GB1530045A GB599151A GB 599151 A GB599151 A GB 599151A GB 15300/45 A GB15300/45 A GB 15300/45A GB 1530045 A GB1530045 A GB 1530045A GB 599151 A GB599151 A GB 599151A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- reflector
- cathode
- caesium
- metal
- 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
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 4
- 229910052709 silver Inorganic materials 0.000 abstract 4
- 239000004332 silver Substances 0.000 abstract 4
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 3
- 229910052792 caesium Inorganic materials 0.000 abstract 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 238000000151 deposition Methods 0.000 abstract 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 150000001663 caesium Chemical class 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000001235 sensitizing effect Effects 0.000 abstract 1
- 229910001923 silver oxide Inorganic materials 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
- H01J43/06—Electrode arrangements
Landscapes
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
599,151. Photo-electric cells ; electron-multipliers. FARNSWORTH TELEVISION & RADIO CORPORATION. June 15, 1945, No. 15300. Convention date, April 7, 1944. [Class 39 (i)] A photocell, which may include an electron multiplier 7 ... 11 of the photocurrent, has a concave reflecting member 4 of large lightgathering power opposite the convex photocathode 6, and a metal vapour gun 13 permanently in position to supersensitise the cathode 6 and shielded by aperture 5 so as not to metallise the transparent wall 14. The caesium sensitised cathode, prepared by depositing caesium on a silver oxide surface as by evaporating it from a caesium salt, is supersensitised after sealing the tube by further deposition of a metal such as silver. Reflector 4 is a coating of a metal such as aluminium on the tube wall. The silver evaporator 13 may be a tungsten wire coated with silver or a globule of silver adjacent any suitable heat source and may be housed forward of the reflector but should be disposed to give uniform coating of the cathode. The multiplier 7 ... 11 shown is a series of annular rings with concave secondary emitting surfaces and progressively increasing potentials. The Specification as open to inspection under Sect. 91 also states that the reflector may be independently mounted within or on the outside of the envelope, and that the sensitising device may be in front of the reflector. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US529907A US2424850A (en) | 1944-04-07 | 1944-04-07 | Photoelectron multiplier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB599151A true GB599151A (en) | 1948-03-05 |
Family
ID=24111704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15300/45A Expired GB599151A (en) | 1944-04-07 | 1945-06-15 | Improvements in or relating to photocells |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2424850A (en) |
| GB (1) | GB599151A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL143880B (en) * | 1947-12-19 | Pilkington Brothers Ltd | PROCEDURE FOR PURIFYING A MOLTEN TIN BATH OF A FLOATING GLASS INSTALLATION, AND A DEVICE FOR PERFORMING THIS PROCESS. | |
| US3183390A (en) * | 1963-06-05 | 1965-05-11 | Roderick J Grader | Photomultiplier |
| FR1516923A (en) * | 1967-01-13 | 1968-02-05 | Hyperelec | Electron multiplier structure with adapted output |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2000705A (en) * | 1931-01-17 | 1935-05-07 | Westinghouse Electric & Mfg Co | Phototube |
| US2037075A (en) * | 1933-10-25 | 1936-04-14 | Rca Corp | Phototube |
| US2054884A (en) * | 1934-02-19 | 1936-09-22 | Schlesinger Kurt | Photo-amplifier tube |
| US2143582A (en) * | 1937-02-04 | 1939-01-10 | Firm Of Fernseh Ag | Electron discharge tube |
| GB550318A (en) * | 1940-01-18 | 1943-01-04 | British Thomson Houston Co Ltd | Improvements in photo-electric cells |
| GB541937A (en) * | 1940-06-14 | 1941-12-18 | Baird Television Ltd | Improvements in or relating to photoelectric cells |
-
1944
- 1944-04-07 US US529907A patent/US2424850A/en not_active Expired - Lifetime
-
1945
- 1945-06-15 GB GB15300/45A patent/GB599151A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2424850A (en) | 1947-07-29 |
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