GB469913A - Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge - Google Patents
Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric dischargeInfo
- Publication number
- GB469913A GB469913A GB379936A GB379936A GB469913A GB 469913 A GB469913 A GB 469913A GB 379936 A GB379936 A GB 379936A GB 379936 A GB379936 A GB 379936A GB 469913 A GB469913 A GB 469913A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric discharge
- filling
- case
- lead
- mercury vapour
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
- C09K11/68—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals containing chromium, molybdenum or tungsten
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
469,913. Electric discharge lamps combined with luminescent materials. GENERAL ELECTRIC CO., Ltd., and RANDALL, J. T. Feb. 7, 1936, No. 3799. Divided out of 469,732. [Class 98 (i)] [Also in Group XL] In a source of light comprising in combination an electric discharge device with a gaseous filling, such as neon or a mixture of mercury vapour and argon, and a luminescent material, this material consists wholly or mainly of zinc tungstate activated as with lead to emit blue light. The material is placed in direct contact with the discharge ; or, in the case of a filling containing mercury vapour, may be separated from it by a partition sufficiently transparent to short-wave radiation. In the case of a neon filling, the ratio of the primary and luminescent radiations may be adjusted in known manner, e.g. as described in Specification 460,890, [Group XL], to give a pinkishwhite response with high efficiency. In the case of a mercury vapour filling if the ratio is adjusted for maximum efficiency a pale blue response results, the spectrum of which is broader, and the efficiency greater, than that of a similar lamp employing calcium tungstate. The preparation of zinc tungstate containing 0À1 per cent of lead as activator from the oxides ZnO and WO3 and lead nitrate is described. Specification 184,485, [Class 98 (i)], also is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB379936A GB469913A (en) | 1936-02-07 | 1936-02-07 | Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB379936A GB469913A (en) | 1936-02-07 | 1936-02-07 | Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB469913A true GB469913A (en) | 1937-08-05 |
Family
ID=9765113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB379936A Expired GB469913A (en) | 1936-02-07 | 1936-02-07 | Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB469913A (en) |
-
1936
- 1936-02-07 GB GB379936A patent/GB469913A/en not_active Expired
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