GB665342A - Improvements relating to electric discharge lamps - Google Patents
Improvements relating to electric discharge lampsInfo
- Publication number
- GB665342A GB665342A GB6447A GB6447A GB665342A GB 665342 A GB665342 A GB 665342A GB 6447 A GB6447 A GB 6447A GB 6447 A GB6447 A GB 6447A GB 665342 A GB665342 A GB 665342A
- Authority
- GB
- United Kingdom
- Prior art keywords
- foils
- jan
- quartz
- molybdenum
- electric discharge
- 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
- H01J61/84—Lamps with discharge constricted by high pressure
- H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
665,342. Quartz-to-metal seals. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and ALDINGTON, J. N. Jan. 1, 1948 [Jan. 1, 1947; Jan. 17, 1947], Nos. 64/47 and 1571/47. Class 36. [Also in Group XL (a)] The electrode seal of a discharge lamp (see Group XL (a)) comprises the refractory electrode 6 and an adjacent quartz rod or tube 7, enclosed by three overlapping foils 3, 8, 9 of refractory metal, e.g. molybdenum, and a metallic shell or cap 5, soldered to one of the foils, the quartz envelope of the lamp being collapsed on to the assembly. The edges of the foils are tapered. The shell 5 may be replaced by a solid block of molybdenum and a single layer or several strips may be used instead of the three overlapping foils.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6447A GB665342A (en) | 1947-01-01 | 1947-01-01 | Improvements relating to electric discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6447A GB665342A (en) | 1947-01-01 | 1947-01-01 | Improvements relating to electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB665342A true GB665342A (en) | 1952-01-23 |
Family
ID=9697762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6447A Expired GB665342A (en) | 1947-01-01 | 1947-01-01 | Improvements relating to electric discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB665342A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1376653A3 (en) * | 2002-06-24 | 2007-01-17 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp |
-
1947
- 1947-01-01 GB GB6447A patent/GB665342A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1376653A3 (en) * | 2002-06-24 | 2007-01-17 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp |
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