GB1299608A - Pyrosilicate phosphor and lamp - Google Patents

Pyrosilicate phosphor and lamp

Info

Publication number
GB1299608A
GB1299608A GB62662/69A GB6266269A GB1299608A GB 1299608 A GB1299608 A GB 1299608A GB 62662/69 A GB62662/69 A GB 62662/69A GB 6266269 A GB6266269 A GB 6266269A GB 1299608 A GB1299608 A GB 1299608A
Authority
GB
United Kingdom
Prior art keywords
phosphor
pyrosilicate
lamp
phosphors
dec
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
GB62662/69A
Inventor
Thomas Leo Barry
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.)
GTE Sylvania Inc
Original Assignee
GTE Sylvania Inc
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 GTE Sylvania Inc filed Critical GTE Sylvania Inc
Publication of GB1299608A publication Critical patent/GB1299608A/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
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/77342—Silicates

Landscapes

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

Abstract

1299608 Luminescent materials GTE SYLVANIA Inc 23 Dec 1969 [23 Dec 1968] 62662/69 Heading C4S A phosphor comprises Eu activated alkaline earth pyrosilicate containing Mg. The phosphors have a general formula where M is Ca, Sr and/or Ba; 2À25 # a # 1À75, 1À25 # b # 0À75 and 0À40 # c # 0À0004. A single phase phosphor is prepared by blending alkaline earth and Mg carbonates, SiO 2 and Eu 2 O 3 with NH 4 Cl flux using glass balls and firing in 80% N 2 , 20% H 2 saturated with water vapour. The phosphors are used in Hg discharge lamps.
GB62662/69A 1968-12-23 1969-12-23 Pyrosilicate phosphor and lamp Expired GB1299608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78602668A 1968-12-23 1968-12-23

Publications (1)

Publication Number Publication Date
GB1299608A true GB1299608A (en) 1972-12-13

Family

ID=25137376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB62662/69A Expired GB1299608A (en) 1968-12-23 1969-12-23 Pyrosilicate phosphor and lamp

Country Status (1)

Country Link
GB (1) GB1299608A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000033389A1 (en) * 1998-11-30 2000-06-08 General Electric Company Light emitting device with phosphor having high luminous efficacy
EP1816179A1 (en) * 2006-02-02 2007-08-08 Nichia Corporation Phosphor and light emitting device using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000033389A1 (en) * 1998-11-30 2000-06-08 General Electric Company Light emitting device with phosphor having high luminous efficacy
US6429583B1 (en) 1998-11-30 2002-08-06 General Electric Company Light emitting device with ba2mgsi2o7:eu2+, ba2sio4:eu2+, or (srxcay ba1-x-y)(a1zga1-z)2sr:eu2+phosphors
JP2002531955A (en) * 1998-11-30 2002-09-24 ゼネラル・エレクトリック・カンパニイ Light emitting device using phosphor with high visibility
EP1816179A1 (en) * 2006-02-02 2007-08-08 Nichia Corporation Phosphor and light emitting device using the same
US7608202B2 (en) 2006-02-02 2009-10-27 Nichia Corporation Phosphor and light emitting device using the same

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Legal Events

Date Code Title Description
PS Patent sealed
48R Reference inserted (sect. 8/1949)
PLNP Patent lapsed through nonpayment of renewal fees