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GB609937A - Improvements relating to luminescent materials - Google Patents

Improvements relating to luminescent materials

Info

Publication number
GB609937A
GB609937A GB925846A GB925846A GB609937A GB 609937 A GB609937 A GB 609937A GB 925846 A GB925846 A GB 925846A GB 925846 A GB925846 A GB 925846A GB 609937 A GB609937 A GB 609937A
Authority
GB
United Kingdom
Prior art keywords
per cent
substances
luminescent materials
weight
metasilicate
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
GB925846A
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.)
HERBERT WILLIAM WINDEBANK
PEARCE SIGNS Ltd
Original Assignee
HERBERT WILLIAM WINDEBANK
PEARCE SIGNS Ltd
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 HERBERT WILLIAM WINDEBANK, PEARCE SIGNS Ltd filed Critical HERBERT WILLIAM WINDEBANK
Priority to GB925846A priority Critical patent/GB609937A/en
Publication of GB609937A publication Critical patent/GB609937A/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
    • C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon
    • 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
    • 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)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

609,937. Luminescent materials for discharge lamps. PEARCE SIGNS, Ltd., and WINDEBANK, H. W. March 26, 1946, No. 9258. [Class 39 (i)] Means for producing visible light comprises an electric discharge device, e.g. a low-pressure mercury discharge lamp, which when operated irradiates and causes to fluoresce a material containing a.mixture of the three substances: (a) calcium magnesium tungstate with a suitable activator, (b) zinc metasilicate activated by manganese dioxide and by an amount of beryllium oxide which does not exceed 1 per cent by weight of substance (b), and (c) cadmium beryllium metasilicate with a suitable activator. The proportions by weight of the three substances are substantially as to (a) from 30 to 5 per cent, as to (b) from 60 to 50 per cent, and as to (c) from 10 to 45 per cent. The substances (a), (b) and (c) are preferably prepared as set out in Specifications 567,494, 568,789 and 568,790 respectively.
GB925846A 1946-03-26 1946-03-26 Improvements relating to luminescent materials Expired GB609937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB925846A GB609937A (en) 1946-03-26 1946-03-26 Improvements relating to luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB925846A GB609937A (en) 1946-03-26 1946-03-26 Improvements relating to luminescent materials

Publications (1)

Publication Number Publication Date
GB609937A true GB609937A (en) 1948-10-08

Family

ID=9868508

Family Applications (1)

Application Number Title Priority Date Filing Date
GB925846A Expired GB609937A (en) 1946-03-26 1946-03-26 Improvements relating to luminescent materials

Country Status (1)

Country Link
GB (1) GB609937A (en)

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