GB660000A - Improvements in or relating to low pressure electric discharge lamps - Google Patents
Improvements in or relating to low pressure electric discharge lampsInfo
- Publication number
- GB660000A GB660000A GB962748A GB962748A GB660000A GB 660000 A GB660000 A GB 660000A GB 962748 A GB962748 A GB 962748A GB 962748 A GB962748 A GB 962748A GB 660000 A GB660000 A GB 660000A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silica gel
- discharge lamps
- react
- dehydrating agent
- envelope
- 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
- H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
- H01J61/26—Means for absorbing or adsorbing gas, e.g. by gettering; Means for preventing blackening of the envelope
Landscapes
- Discharge Lamp (AREA)
Abstract
660,000. Discharge lamps. GENERAL ELECTRIC CO., Ltd., and CLACK, B. N. April 6, 1948, No. 9627. [Class 39 (i)] A low-pressure discharge lamp having an operating temperature not much in excess of 150‹ C. contains within the envelope a solid stable dehydrating agent such as silica gel to absorb water vapour evolved during operation. This is of advantage when the envelope includes a window or other seal of a kind which would not permit the normal outgassing bake at a sufficiently high temperature during evacuation. If the lamp filling includes a gas other than a rare gas, e.g. hydrogen, nitrogen or carbon dioxide, a normal metallic getter may react with the filling, and a dehydrating agent which does not so react, such as the abovementioned silica gel, is used. The material may be granular, or contained in a gauze capsule. According to the Provisional Specification, phosphorus pentoxide, activated alumina or activated charcoal may be used instead of silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB962748A GB660000A (en) | 1948-04-06 | 1948-04-06 | Improvements in or relating to low pressure electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB962748A GB660000A (en) | 1948-04-06 | 1948-04-06 | Improvements in or relating to low pressure electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB660000A true GB660000A (en) | 1951-10-31 |
Family
ID=9875632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB962748A Expired GB660000A (en) | 1948-04-06 | 1948-04-06 | Improvements in or relating to low pressure electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB660000A (en) |
-
1948
- 1948-04-06 GB GB962748A patent/GB660000A/en not_active Expired
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