GB944725A - Improvements in low pressure mercury vapour fluorescent electric discharge lamps - Google Patents
Improvements in low pressure mercury vapour fluorescent electric discharge lampsInfo
- Publication number
- GB944725A GB944725A GB153661A GB153661A GB944725A GB 944725 A GB944725 A GB 944725A GB 153661 A GB153661 A GB 153661A GB 153661 A GB153661 A GB 153661A GB 944725 A GB944725 A GB 944725A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury vapour
- low pressure
- electric discharge
- pressure mercury
- 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
-
- 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
- C09K11/74—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth
- C09K11/75—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth containing antimony
- C09K11/76—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth containing antimony also containing phosphorus and halogen, e.g. halophosphates
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
- H01J61/44—Devices characterised by the luminescent material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The luminescent coating of a mercury vapour lamp comprises not more than 5 mg. per sq. cm. of an alkaline earth phosphate phosphor, in which not more than 20% of the particles exceed 10 m diameter, not more than 2% exceed 15 m , and not more than 4% are less than 3 m . The phosphor may be a halo-, ortho-, or pyrophosphate of calcium, strontium, barium or magnesium, and may be activated by antimony and manganese, or tin. Specifications 927,351 and 927,354 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB153661A GB944725A (en) | 1961-01-13 | 1961-01-13 | Improvements in low pressure mercury vapour fluorescent electric discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB153661A GB944725A (en) | 1961-01-13 | 1961-01-13 | Improvements in low pressure mercury vapour fluorescent electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB944725A true GB944725A (en) | 1963-12-18 |
Family
ID=9723686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB153661A Expired GB944725A (en) | 1961-01-13 | 1961-01-13 | Improvements in low pressure mercury vapour fluorescent electric discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB944725A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2819614A1 (en) * | 1977-05-06 | 1978-11-09 | Philips Nv | LOW PRESSURE MERCURY VAPOR DISCHARGE LAMP |
-
1961
- 1961-01-13 GB GB153661A patent/GB944725A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2819614A1 (en) * | 1977-05-06 | 1978-11-09 | Philips Nv | LOW PRESSURE MERCURY VAPOR DISCHARGE LAMP |
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