GB498740A - Improvements in combinations of electric discharge devices with materials excited to luminescence by the discharge through them - Google Patents

Improvements in combinations of electric discharge devices with materials excited to luminescence by the discharge through them

Info

Publication number
GB498740A
GB498740A GB1328637A GB1328637A GB498740A GB 498740 A GB498740 A GB 498740A GB 1328637 A GB1328637 A GB 1328637A GB 1328637 A GB1328637 A GB 1328637A GB 498740 A GB498740 A GB 498740A
Authority
GB
United Kingdom
Prior art keywords
activated
per cent
zinc
light under
under excitation
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
Application number
GB1328637A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1328637A priority Critical patent/GB498740A/en
Publication of GB498740A publication Critical patent/GB498740A/en
Expired legal-status Critical Current

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
    • 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
    • C09K11/56—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing sulfur
    • C09K11/562—Chalcogenides
    • C09K11/565—Chalcogenides with zinc cadmium
    • 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
    • C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon

Abstract

498,740. Luminescent materials for discharge lamps. GENERAL ELECTRIC CO., Ltd., and RANDALL, J. T. (Patent- Treuhand-Ges. fiir Elektrische Gl³hlampen) May 10, 1937, No. 13286. [Class 98 (i)] Luminescent material applied to the quartz envelope of a high pressure metal vapour electric discharge lamp contains at least three components of which one is adapted to emit red luminescent light under excitation by radiation in the range 4000-3000 A.U., one adapted to emit red luminescent light under excitation by 3000-2200 A.U. and one adapted to emit blue luminescent light under excitation by 4000-2000 A.U. The components given in the Specification are, in order, zinc cadmium sulphide containing 20-40 per cent cadmium sulphide and activated by copper, cadmium silicate or zinc-beryllium silicate activated by manganese, and zinc sulphide activated by silver or calcium tungstate which may be activated by 2-4 per cent of lead. Each component constitutes between 25-50 per cent of the total luminescent material. The material is applied preferably to the interior of the jacket surrounding the quartz envelope, the space between the envelope and jacket containing oxygen and helium at a pressure below atmospheric. Specifications 468,238, 474,907, and 480,356 are acknowledged. Specification 431,409, [Group XL], also is referred to.
GB1328637A 1937-05-10 1937-05-10 Improvements in combinations of electric discharge devices with materials excited to luminescence by the discharge through them Expired GB498740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1328637A GB498740A (en) 1937-05-10 1937-05-10 Improvements in combinations of electric discharge devices with materials excited to luminescence by the discharge through them

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1328637A GB498740A (en) 1937-05-10 1937-05-10 Improvements in combinations of electric discharge devices with materials excited to luminescence by the discharge through them

Publications (1)

Publication Number Publication Date
GB498740A true GB498740A (en) 1939-01-10

Family

ID=10020200

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1328637A Expired GB498740A (en) 1937-05-10 1937-05-10 Improvements in combinations of electric discharge devices with materials excited to luminescence by the discharge through them

Country Status (1)

Country Link
GB (1) GB498740A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452522A (en) * 1941-03-18 1948-10-26 Rca Corp Luminescent screen and method of developing light

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452522A (en) * 1941-03-18 1948-10-26 Rca Corp Luminescent screen and method of developing light

Similar Documents

Publication Publication Date Title
GB1466588A (en) High pressure mercury vapour discharge lamps
US2355258A (en) Ultraviolet fluorescent lamp
US2207174A (en) Electric discharge lamp
US2424454A (en) Infrared generator
US2494883A (en) Cascaded fluorescent material
US2245414A (en) Fluorescent material
GB498740A (en) Improvements in combinations of electric discharge devices with materials excited to luminescence by the discharge through them
US2135707A (en) Gaseous electric discharge device
US2213796A (en) Gaseous electric discharge lamp device
US2176151A (en) Electric lamp
US2103085A (en) Electric lamp
US2103053A (en) Gaseous electric discharge device
US2211590A (en) Gaseous electric discharge lamp device
US2195341A (en) Luminescent material
US2223426A (en) Sources of light comprising an electric discharge device and luminescent material adapted to be excited by the discharge therein
US2297940A (en) Electric discharge lamp
GB766150A (en) Improvements in or relating to low pressure fluorescent electric discharge lamps
GB493449A (en) Improvements in combinations of electric discharge devices with materials excited to luminescence by the discharge through them
US2295040A (en) Combination of sources of radiation with luminescent materials
GB469913A (en) Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge
GB495632A (en) Improvements in or relating to electric high-pressure metal-vapour discharge tubes
GB532941A (en) Improvements in electric discharge lamps comprising luminescent materials
GB569198A (en) Improvements in or relating to electric lamps
GB445187A (en) Improvements in luminous electric discharge devices
GB438910A (en) Improvements in electric discharge lamps