ES340338A1 - Radio-interference-free low-pressure mercury-vapor lamp - Google Patents
Radio-interference-free low-pressure mercury-vapor lampInfo
- Publication number
- ES340338A1 ES340338A1 ES340338A ES340338A ES340338A1 ES 340338 A1 ES340338 A1 ES 340338A1 ES 340338 A ES340338 A ES 340338A ES 340338 A ES340338 A ES 340338A ES 340338 A1 ES340338 A1 ES 340338A1
- Authority
- ES
- Spain
- Prior art keywords
- mixture
- boride
- pressure mercury
- alkaline earth
- grain size
- 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
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title abstract 2
- 239000000203 mixture Substances 0.000 abstract 5
- 229910052726 zirconium Inorganic materials 0.000 abstract 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract 2
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 abstract 2
- 229910052791 calcium Inorganic materials 0.000 abstract 2
- 239000011575 calcium Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 229910052684 Cerium Inorganic materials 0.000 abstract 1
- 229910052777 Praseodymium Inorganic materials 0.000 abstract 1
- 229910052772 Samarium Inorganic materials 0.000 abstract 1
- 229910052770 Uranium Inorganic materials 0.000 abstract 1
- 229910052768 actinide Inorganic materials 0.000 abstract 1
- 150000001255 actinides Chemical class 0.000 abstract 1
- 229910052788 barium Inorganic materials 0.000 abstract 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 229910052747 lanthanoid Inorganic materials 0.000 abstract 1
- 150000002602 lanthanoids Chemical class 0.000 abstract 1
- 229910052746 lanthanum Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical class [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 abstract 1
- 229910052715 tantalum Inorganic materials 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
- H01J61/0677—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material
Landscapes
- Discharge Lamp (AREA)
- Solid Thermionic Cathode (AREA)
- Luminescent Compositions (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
A low-pressure mercury vapour lamp stated to give rise to reduced interference radiation, includes two thermionic electrodes, each of which consists of a support coated with a mixture which includes an electron emission material consisting of at least one alkaline earth metal oxide and a boride of a metal of the lanthanide or actinide series or of the second, fourth, fifth or seventh groups of the Periodic Table, the quantity of boride lying in the range 0À1 to 15%-and preferably in the range of 0À1 to 7%-by weight of the alkaline earth metal oxide. The borides of Ca, La, Ce, Pr, Sm, U, Zr, V, Ta and Mn are specifically referred to, the grain size of the boride particles being not greater than 30, and preferably less than 15, the mean grain size of the electron emissive particles. The mixture may additionally include zirconium in amount 1 to 5% by weight of the electronic emissive material. A mixture of the boride, zirconium and an 8 : 5 : 7 mixture of barium, calcium and strontium carbonates may be coated on a tungsten wire support which is subsequently heated to decompose the carbonates to oxides. Examples of compositions are given.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6606479A NL6606479A (en) | 1966-05-12 | 1966-05-12 | |
| NL6614550A NL6614550A (en) | 1966-10-15 | 1966-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES340338A1 true ES340338A1 (en) | 1968-06-01 |
Family
ID=26644037
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES340339A Expired ES340339A1 (en) | 1966-05-12 | 1967-05-10 | Radio-interference-free low-pressure mercury-vapor lamp |
| ES340338A Expired ES340338A1 (en) | 1966-05-12 | 1967-05-10 | Radio-interference-free low-pressure mercury-vapor lamp |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES340339A Expired ES340339A1 (en) | 1966-05-12 | 1967-05-10 | Radio-interference-free low-pressure mercury-vapor lamp |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3505553A (en) |
| AT (1) | AT279735B (en) |
| BE (2) | BE698366A (en) |
| CH (2) | CH490732A (en) |
| DE (2) | DE1589247B2 (en) |
| ES (2) | ES340339A1 (en) |
| FR (2) | FR1522814A (en) |
| GB (2) | GB1191463A (en) |
| NO (1) | NO118120B (en) |
| SE (2) | SE304558B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321503A (en) * | 1978-11-06 | 1982-03-23 | Westinghouse Electric Corp. | HID Lamp electrode comprising barium-calcium niobate or tantalate |
| JPS63141252A (en) * | 1986-12-02 | 1988-06-13 | Hitachi Ltd | Low pressure discharge lamp |
| US4910431A (en) * | 1987-04-24 | 1990-03-20 | W. C. Heraeus Gmbh | Hydrogen discharge ultraviolet light source or lamp, and method of its manufacture |
| DE3713704A1 (en) * | 1987-04-24 | 1988-11-03 | Heraeus Gmbh W C | HYDROGEN DISCHARGE LAMP AND METHOD FOR THE PRODUCTION THEREOF |
| DE3715375C1 (en) * | 1987-05-08 | 1988-10-13 | Heraeus Gmbh W C | Hydrogen discharge lamp |
| US5391523A (en) * | 1993-10-27 | 1995-02-21 | Marlor; Richard C. | Electric lamp with lead free glass |
| US5675214A (en) * | 1994-09-21 | 1997-10-07 | U.S. Philips Corporation | Low-pressure discharge lamp having hollow electrodes |
| DE69507283T2 (en) * | 1994-11-08 | 1999-07-01 | Koninklijke Philips Electronics N.V., Eindhoven | LOW PRESSURE DISCHARGE LAMP |
| US5686789A (en) * | 1995-03-14 | 1997-11-11 | Osram Sylvania Inc. | Discharge device having cathode with micro hollow array |
| JPH103879A (en) * | 1996-06-12 | 1998-01-06 | Tdk Corp | Ceramic cathode fluorescent lamp |
| US5856726A (en) * | 1996-03-15 | 1999-01-05 | Osram Sylvania Inc. | Electric lamp with a threaded electrode |
| US6713950B2 (en) * | 2001-08-22 | 2004-03-30 | General Electric Company | Low volatility slurry for emission mix powder |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE502232A (en) * | 1950-03-31 | |||
| US2878411A (en) * | 1955-03-21 | 1959-03-17 | Chromatic Television Lab Inc | Color television display screen |
| US2959702A (en) * | 1958-07-02 | 1960-11-08 | Westinghouse Electric Corp | Lamp and mount |
| US3027480A (en) * | 1958-12-15 | 1962-03-27 | Raytheon Co | Electron discharge device cathodes |
| GB1015840A (en) * | 1964-09-08 | 1966-01-05 | Standard Telephones Cables Ltd | Thermionic valves |
| GB1178051A (en) * | 1966-04-20 | 1970-01-14 | Matsushita Electronics Corp | Noiseless Discharge Tube |
| GB1178052A (en) * | 1966-04-20 | 1970-01-14 | Matsushita Electronics Corp | A Noiseless Discharge Tube |
-
1967
- 1967-04-27 US US634222A patent/US3505553A/en not_active Expired - Lifetime
- 1967-05-09 CH CH660367A patent/CH490732A/en not_active IP Right Cessation
- 1967-05-09 GB GB21428/67A patent/GB1191463A/en not_active Expired
- 1967-05-09 CH CH660267A patent/CH464354A/en unknown
- 1967-05-09 SE SE6489/67A patent/SE304558B/xx unknown
- 1967-05-09 NO NO168066A patent/NO118120B/no unknown
- 1967-05-09 GB GB21427/67A patent/GB1193864A/en not_active Expired
- 1967-05-09 SE SE6482/67A patent/SE305031B/xx unknown
- 1967-05-09 DE DE1967N0030478 patent/DE1589247B2/en active Granted
- 1967-05-09 DE DE1967N0030479 patent/DE1589248B2/en active Granted
- 1967-05-09 AT AT432567A patent/AT279735B/en not_active IP Right Cessation
- 1967-05-10 ES ES340339A patent/ES340339A1/en not_active Expired
- 1967-05-10 ES ES340338A patent/ES340338A1/en not_active Expired
- 1967-05-11 BE BE698366D patent/BE698366A/xx unknown
- 1967-05-12 FR FR106222A patent/FR1522814A/en not_active Expired
- 1967-05-12 BE BE698451D patent/BE698451A/xx unknown
- 1967-05-12 FR FR106223A patent/FR1522815A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1589248B2 (en) | 1976-04-15 |
| BE698366A (en) | 1967-11-13 |
| BE698451A (en) | 1967-11-13 |
| DE1589247A1 (en) | 1970-04-09 |
| FR1522815A (en) | 1968-04-26 |
| DE1589247B2 (en) | 1976-04-15 |
| AT279735B (en) | 1970-03-10 |
| US3505553A (en) | 1970-04-07 |
| CH490732A (en) | 1970-05-15 |
| SE304558B (en) | 1968-09-30 |
| GB1191463A (en) | 1970-05-13 |
| DE1589248A1 (en) | 1970-04-30 |
| GB1193864A (en) | 1970-06-03 |
| CH464354A (en) | 1968-10-31 |
| NO118120B (en) | 1969-11-10 |
| SE305031B (en) | 1968-10-14 |
| ES340339A1 (en) | 1968-06-01 |
| FR1522814A (en) | 1968-04-26 |
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