GB1248157A - Metallic vapor arc-lamp - Google Patents
Metallic vapor arc-lampInfo
- Publication number
- GB1248157A GB1248157A GB36137/69A GB3613769A GB1248157A GB 1248157 A GB1248157 A GB 1248157A GB 36137/69 A GB36137/69 A GB 36137/69A GB 3613769 A GB3613769 A GB 3613769A GB 1248157 A GB1248157 A GB 1248157A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filling
- pressures
- envelope
- preferred
- july
- 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
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
Abstract
1,248,157. Metal-vapour discharge lamps. GENERAL ELECTRIC CO. 17 July, 1969 [17 July, 1968], No. 36137/69. Heading H1D. An arc discharge lamp giving a peak intensity in the region 5050-5500 Angstrom has a ceramic (e.g. poly-crystalline alumina) envelope and a filling, in addition to a starter gas, of sodium with at least two of the elements mercury, cadmium and thallium, the filling being generated from a charge containing all the filling elements, and a portion of each element remaining unvaporized. The partial pressures of each element in atmospheres at the operating temperature range of 650-1000 C. must lie within the limits, Na 10<SP>-3</SP>-0À6, Hg 0-3, T1 0-10<SP>-2</SP>, Cd 0-1À5 with the further conditions (a) Hg + Cd is 0À1-4; (b) if T1 < 10<SP>-4</SP>, Cd > 0À1; (c) if Cd < 0À1, Tl > 10-<SP>4</SP>. The starting gas is preferably Xe at 5-100 (e.g. 20) torr. but H, Ne, A, Kr may also be used. Many specific examples are given of the quaternary system (the preferred system being Na 6 x 10<SP>-3</SP>, Tl 2À2 x 10<SP>-4</SP>, Cd 0.23, Hg 0.12) and of the ternary systems Na-Tl-Hg (preferred pressures 0.01, 0.0022, 0À3) and Na-Cd-Hg (preferred pressures 0.04, 0.14, 0.10) and details are given of the charge compositions necessary to give the desired partial pressures in view of the interaction between these pressures. The lamp described has a ceramic inner envelope 12 supported in a vitreous outer envelope 2 by a framework of leads 25, 10, 30, the outer envelope containing getters 33 and an additional oxygen getter 44. Additional components of the filling may include Mg, Ba, Sr, Cu, Ag, Sc, La, Ce, Pr, Sm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74550268A | 1968-07-17 | 1968-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1248157A true GB1248157A (en) | 1971-09-29 |
Family
ID=24996946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36137/69A Expired GB1248157A (en) | 1968-07-17 | 1969-07-17 | Metallic vapor arc-lamp |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3521108A (en) |
| BE (1) | BE736233A (en) |
| BR (1) | BR6910725D0 (en) |
| DE (1) | DE1935844A1 (en) |
| ES (1) | ES369613A1 (en) |
| FR (1) | FR2013148A1 (en) |
| GB (1) | GB1248157A (en) |
| ZA (1) | ZA695096B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2135502A (en) * | 1983-02-18 | 1984-08-30 | Egyesuelt Izzolampa | High-pressure sodium lamp |
| US4581557A (en) * | 1979-01-02 | 1986-04-08 | General Electric Company | Stabilized high intensity discharge lamp |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5139473B2 (en) * | 1971-11-30 | 1976-10-28 | ||
| JPS495275U (en) * | 1972-04-12 | 1974-01-17 | ||
| JPS51119185A (en) * | 1975-04-10 | 1976-10-19 | Iwasaki Electric Co Ltd | High pressure sodium lamp |
| DE2657824C2 (en) * | 1976-01-16 | 1983-08-04 | General Electric Co., Schenectady, N.Y. | Method for operating a high-pressure metal halide lamp and device for carrying out the method |
| US4626743A (en) * | 1983-02-23 | 1986-12-02 | Egyesult Izzolempa os Villamossagi Rt. | High-pressure sodium lamp |
| US6498429B1 (en) | 1999-11-15 | 2002-12-24 | General Electric Company | Sodium-xenon lamp with improved characteristics at end-of-life |
| CN1199217C (en) * | 2000-01-20 | 2005-04-27 | 奥斯兰姆施尔凡尼亚公司 | High pressure sodium lamp having reduced arc tube size |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3248590A (en) * | 1963-03-01 | 1966-04-26 | Gen Electric | High pressure sodium vapor lamp |
| US3384798A (en) * | 1966-04-26 | 1968-05-21 | Gen Electric | High pressure saturation vapor sodium lamp containing mercury |
| US3453477A (en) * | 1967-02-16 | 1969-07-01 | Gen Electric | Alumina-ceramic sodium vapor lamp |
-
1968
- 1968-07-17 US US745502A patent/US3521108A/en not_active Expired - Lifetime
-
1969
- 1969-07-15 BR BR210725/69A patent/BR6910725D0/en unknown
- 1969-07-15 DE DE19691935844 patent/DE1935844A1/en active Pending
- 1969-07-17 FR FR6924412A patent/FR2013148A1/fr not_active Withdrawn
- 1969-07-17 ZA ZA695096A patent/ZA695096B/en unknown
- 1969-07-17 GB GB36137/69A patent/GB1248157A/en not_active Expired
- 1969-07-17 ES ES369613A patent/ES369613A1/en not_active Expired
- 1969-07-17 BE BE736233D patent/BE736233A/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4581557A (en) * | 1979-01-02 | 1986-04-08 | General Electric Company | Stabilized high intensity discharge lamp |
| GB2135502A (en) * | 1983-02-18 | 1984-08-30 | Egyesuelt Izzolampa | High-pressure sodium lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1935844A1 (en) | 1970-01-22 |
| BE736233A (en) | 1970-01-19 |
| US3521108A (en) | 1970-07-21 |
| BR6910725D0 (en) | 1973-01-02 |
| ZA695096B (en) | 1971-03-31 |
| FR2013148A1 (en) | 1970-03-27 |
| ES369613A1 (en) | 1971-06-01 |
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