GB485274A - Improvements in or relating to high-pressure mercury-vapour discharge lamps - Google Patents
Improvements in or relating to high-pressure mercury-vapour discharge lampsInfo
- Publication number
- GB485274A GB485274A GB30615/37A GB3061537A GB485274A GB 485274 A GB485274 A GB 485274A GB 30615/37 A GB30615/37 A GB 30615/37A GB 3061537 A GB3061537 A GB 3061537A GB 485274 A GB485274 A GB 485274A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mms
- internal diameter
- pressure
- lamp
- discharge lamps
- 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
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/822—High-pressure mercury lamps
Landscapes
- Discharge Lamp (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
485,274. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS'GLOEILAMPENFABRIEKEN. Nov. 8, 1937, No. 30615. Convention date, Nov. 10, 1936. Drawings to Specification. [Class 39 (i)] The container of a high-pressure discharge lamp without water or like cooling and whose internal diameter is over 7 mm. is made to the following dimensions, Vb being the operating voltage and B the energy expenditure in watts. (a) The internal diameter in mms. is 2À3 (B<2>/Vb)<.03> , to within 20 per cent. (b) The length of the discharge path in cms. is B<0.8> Vb<0.6> / 325 to within 25 per cent. (c) The thickness of the wall is 5/d¢ mms. when d is the internal diameter of the envelope. An example of such a lamp is described having a filling of argon at 10 mms. pressure at ordinary temperatures and a small quantity of mercury so that the mercury vapour is unsaturated in operation ; the lamp is enclosed in an outer vessel containing nitrogen at a pressure of 50 cms. Specification 476,544 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE485274X | 1936-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB485274A true GB485274A (en) | 1938-05-17 |
Family
ID=6543262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30615/37A Expired GB485274A (en) | 1936-11-10 | 1937-11-08 | Improvements in or relating to high-pressure mercury-vapour discharge lamps |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2135702A (en) |
| BE (1) | BE424532A (en) |
| FR (1) | FR828966A (en) |
| GB (1) | GB485274A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR983744A (en) * | 1948-03-27 | 1951-06-27 | Lampes Sa | High pressure mercury vapor lamp |
| JPS54120973A (en) * | 1978-03-10 | 1979-09-19 | Mitsubishi Electric Corp | Lighting apparatus |
-
0
- BE BE424532D patent/BE424532A/xx unknown
-
1937
- 1937-10-15 US US169162A patent/US2135702A/en not_active Expired - Lifetime
- 1937-11-08 GB GB30615/37A patent/GB485274A/en not_active Expired
- 1937-11-10 FR FR828966D patent/FR828966A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2135702A (en) | 1938-11-08 |
| FR828966A (en) | 1938-06-07 |
| BE424532A (en) |
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