GB495415A - Improvements in or relating to combinations of an electric discharge device and material adapted to be excited to luminescence by the discharge in the device - Google Patents
Improvements in or relating to combinations of an electric discharge device and material adapted to be excited to luminescence by the discharge in the deviceInfo
- Publication number
- GB495415A GB495415A GB1366937A GB1366937A GB495415A GB 495415 A GB495415 A GB 495415A GB 1366937 A GB1366937 A GB 1366937A GB 1366937 A GB1366937 A GB 1366937A GB 495415 A GB495415 A GB 495415A
- Authority
- GB
- United Kingdom
- Prior art keywords
- luminescent
- discharge
- electric discharge
- specifications
- class
- 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
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
495,415. Luminescent materials. GENERAL ELECTRIC CO., Ltd., and RANDALL, J. T. May 14, 1937, Nos. 13669 and 30395, (the second Provisional Specification being divided out of the first Provisional Specification). [Class 98 (i)] Magnesium tungstate or zinc tungstate is used as luminescent material outside the quartz or like envelope of a high-pressure mercury-vapour electric discharge lamp. Both materials have similar luminescent properties and efficiencies, being a very pale unsaturated blue. The material may be placed on the interior of a bulb enclosing the quartz envelope. The tungstates are prepared as described in Specifications 469,732 and 469,913. Luminescent material, e.g. zinc-cadmium sulphide activated by copper, may be added to emit red light, yielding a resultant flesh tint. Specifications 184,485, [Class 98 (ii)], 431,409, [Group XL], and 468,238 also are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1366937A GB495415A (en) | 1937-05-14 | 1937-05-14 | Improvements in or relating to combinations of an electric discharge device and material adapted to be excited to luminescence by the discharge in the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1366937A GB495415A (en) | 1937-05-14 | 1937-05-14 | Improvements in or relating to combinations of an electric discharge device and material adapted to be excited to luminescence by the discharge in the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB495415A true GB495415A (en) | 1938-11-14 |
Family
ID=10027250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1366937A Expired GB495415A (en) | 1937-05-14 | 1937-05-14 | Improvements in or relating to combinations of an electric discharge device and material adapted to be excited to luminescence by the discharge in the device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB495415A (en) |
-
1937
- 1937-05-14 GB GB1366937A patent/GB495415A/en not_active Expired
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