GB514457A - Improvements in or relating to luminescent materials - Google Patents

Improvements in or relating to luminescent materials

Info

Publication number
GB514457A
GB514457A GB1361638A GB1361638A GB514457A GB 514457 A GB514457 A GB 514457A GB 1361638 A GB1361638 A GB 1361638A GB 1361638 A GB1361638 A GB 1361638A GB 514457 A GB514457 A GB 514457A
Authority
GB
United Kingdom
Prior art keywords
calcium tungstate
activated
luminescent materials
give
relating
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
GB1361638A
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.)
FRANCO BRITISH ELECTRICAL CO
Original Assignee
FRANCO BRITISH ELECTRICAL CO
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 FRANCO BRITISH ELECTRICAL CO filed Critical FRANCO BRITISH ELECTRICAL CO
Priority to GB1361638A priority Critical patent/GB514457A/en
Publication of GB514457A publication Critical patent/GB514457A/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)
  • Discharge Lamp (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Luminescent Compositions (AREA)

Abstract

514,457. Luminescent materials. FRANCOBRITISH ELECTRICAL CO., LTD., and BRACKENSEY, A. H. May 6, 1938, No. 13616. [Class 39 (i)] Activated zinc beryllium silicate is mixed with activated calcium tungstate to give a mixture containing 5 to 10 per cent. of calcium tungstate for an interior luminescent coating of a low pressure mercury vapour lamp. The calcium tungstate is preferably activated by lead and the zinc beryllium silicate by manganese. The two components may be ground together to give a material fluorescing white containing a fair proportion of the primary colours.
GB1361638A 1938-05-06 1938-05-06 Improvements in or relating to luminescent materials Expired GB514457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1361638A GB514457A (en) 1938-05-06 1938-05-06 Improvements in or relating to luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1361638A GB514457A (en) 1938-05-06 1938-05-06 Improvements in or relating to luminescent materials

Publications (1)

Publication Number Publication Date
GB514457A true GB514457A (en) 1939-11-08

Family

ID=10026274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1361638A Expired GB514457A (en) 1938-05-06 1938-05-06 Improvements in or relating to luminescent materials

Country Status (1)

Country Link
GB (1) GB514457A (en)

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