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GB888337A - Improvements in fluorescent lamps and phosphor compositions therefor - Google Patents

Improvements in fluorescent lamps and phosphor compositions therefor

Info

Publication number
GB888337A
GB888337A GB2210159A GB2210159A GB888337A GB 888337 A GB888337 A GB 888337A GB 2210159 A GB2210159 A GB 2210159A GB 2210159 A GB2210159 A GB 2210159A GB 888337 A GB888337 A GB 888337A
Authority
GB
United Kingdom
Prior art keywords
activated
manganese
luminescent material
region
emission peak
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
GB2210159A
Inventor
Stanley Thomas Henderson
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.)
EMI Group Ltd
Original Assignee
Thorn Electrical Industries 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 Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Priority to GB2210159A priority Critical patent/GB888337A/en
Priority to BE592264A priority patent/BE592264A/en
Publication of GB888337A publication Critical patent/GB888337A/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
    • C09K11/66Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead
    • 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
    • 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
    • C09K11/74Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth
    • 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
    • C09K11/74Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth
    • C09K11/75Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth containing antimony
    • C09K11/76Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth containing antimony also containing phosphorus and halogen, e.g. halophosphates
    • 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
    • C09K11/77Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7715Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
    • C09K11/7726Borates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/38Devices for influencing the colour or wavelength of the light
    • H01J61/42Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/44Devices 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

888,337. Discharge lamps; luminescent materials. THORN ELECTRICAL INDUSTRIES Ltd. June 23, 1960 [June 26, 1959], No. 22101/59. Drawings to Specification. Class 39(1) A low pressure fluorescent discharge lamp, containing mercury and argon or other rare gas or mixture of such gases, has a phosphor coating which includes at least 15% by weight of a first luminescent material having in operation of the lamp an emission peak in the region 6500-6700A, at least 15% of a second luminescent material having an emission peak in the region 6000-6500Š, the first and second materials amounting in total to not more than 70% by weight of the coating, and at least one further luminescent material emitting over a wide band of the visible spectrum including the blue region of the spectrum. The first material can be activated by manganese alone, e.g. magnesium arsenate or fluorogermanate; the second material can be activated by manganese and a second metal, e.g. calcium silicate activated by lead and manganese or magnesium fluoroborate activated by cerium and manganese; and the further luminescent material can be manganese free, e.g. barium titanium phosphate, magnesium tungstate or a mixture thereof, calcium halophosphate activated by antimony, or strontium pyrophosphate activated by tin. Cardmium borate activated by manganese or zinc beryllium silicate activated by manganese may also be used as the second luminescent material. The phosphor coating can include an additional further luminescent material having an emission peak in the region of 5900Š, e.g. calcium halophosphate activated by antimony and manganese zinc silicate activated by manganese can also be added. Several specific examples of the composition of the phosphor coating are described.
GB2210159A 1959-06-26 1959-06-26 Improvements in fluorescent lamps and phosphor compositions therefor Expired GB888337A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2210159A GB888337A (en) 1959-06-26 1959-06-26 Improvements in fluorescent lamps and phosphor compositions therefor
BE592264A BE592264A (en) 1959-06-26 1960-06-24 Fluorescent Lamp Improvements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2210159A GB888337A (en) 1959-06-26 1959-06-26 Improvements in fluorescent lamps and phosphor compositions therefor

Publications (1)

Publication Number Publication Date
GB888337A true GB888337A (en) 1962-01-31

Family

ID=10173918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2210159A Expired GB888337A (en) 1959-06-26 1959-06-26 Improvements in fluorescent lamps and phosphor compositions therefor

Country Status (2)

Country Link
BE (1) BE592264A (en)
GB (1) GB888337A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296353A (en) * 1979-10-29 1981-10-20 Gte Products Corporation Fluorescent lamp having high color rendering index

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296353A (en) * 1979-10-29 1981-10-20 Gte Products Corporation Fluorescent lamp having high color rendering index

Also Published As

Publication number Publication date
BE592264A (en) 1960-10-17

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