GB522607A - Improvements in luminescent materials and in combination therewith of sources of radiation adapted to excite the materials to luminescence - Google Patents

Improvements in luminescent materials and in combination therewith of sources of radiation adapted to excite the materials to luminescence

Info

Publication number
GB522607A
GB522607A GB3616538A GB3616538A GB522607A GB 522607 A GB522607 A GB 522607A GB 3616538 A GB3616538 A GB 3616538A GB 3616538 A GB3616538 A GB 3616538A GB 522607 A GB522607 A GB 522607A
Authority
GB
United Kingdom
Prior art keywords
materials
luminescent materials
excite
luminescence
sources
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
GB3616538A
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 GB3616538A priority Critical patent/GB522607A/en
Publication of GB522607A publication Critical patent/GB522607A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/67Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
    • C09K11/68Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals containing chromium, molybdenum or tungsten

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

522,607. Luminescent materials. GENERAL ELECTRIC CO., Ltd., and McKEAG, A. H. Dec. 12, 1938, No. 36165. Addition to 495,706, [Group XX]. [Class 39 (i)] To lessen the tendency to blacken in luminescent materials as claimed in Claim 1 or 3 of the parent Specification, or as modified by the inventions set out in Specifications 509,857 and 509,858, an oxide and/or a carbonate are added; the intimate mixture is used in a low pressure mercury vapour lamp. The oxides and/or carbonates of the following are mentioned :-barium, cerium, thorium, strontium, zinc, cerium, thorium, beryllium, and tin, singly or in combination. Between 2 and 10 per cent. of the added compound is proposed, but larger proportions can be used.
GB3616538A 1938-12-12 1938-12-12 Improvements in luminescent materials and in combination therewith of sources of radiation adapted to excite the materials to luminescence Expired GB522607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3616538A GB522607A (en) 1938-12-12 1938-12-12 Improvements in luminescent materials and in combination therewith of sources of radiation adapted to excite the materials to luminescence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3616538A GB522607A (en) 1938-12-12 1938-12-12 Improvements in luminescent materials and in combination therewith of sources of radiation adapted to excite the materials to luminescence

Publications (1)

Publication Number Publication Date
GB522607A true GB522607A (en) 1940-06-21

Family

ID=10385567

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3616538A Expired GB522607A (en) 1938-12-12 1938-12-12 Improvements in luminescent materials and in combination therewith of sources of radiation adapted to excite the materials to luminescence

Country Status (1)

Country Link
GB (1) GB522607A (en)

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