Nothing Special   »   [go: up one dir, main page]

GB1326686A - Discharge lamps - Google Patents

Discharge lamps

Info

Publication number
GB1326686A
GB1326686A GB1630771A GB1630771A GB1326686A GB 1326686 A GB1326686 A GB 1326686A GB 1630771 A GB1630771 A GB 1630771A GB 1630771 A GB1630771 A GB 1630771A GB 1326686 A GB1326686 A GB 1326686A
Authority
GB
United Kingdom
Prior art keywords
luminescent
mgo
envelope
discharge lamps
luminescent material
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
GB1630771A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1326686A publication Critical patent/GB1326686A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
    • 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
    • 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
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
    • 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
    • C09K11/62—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing gallium, indium or thallium
    • 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
    • C09K11/7737—Phosphates
    • C09K11/7738—Phosphates with alkaline earth metals
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Luminescent Compositions (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1326686 Electric discharge lamps PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 21 May 1971 [25 May 1970] 16307/71 Heading H1D [Also in Division C4] A discharge lamp has a luminescent screen containing a first luminescent material whose emission maximum is in the green region of the spectrum and a second luminescent material having a maximum in the region 380 to 450 n.m. The weight ratio of the second material to the first is between 1 : 3 and 9 : 1 and the second material includes as activator bivalent europium. The first material may be manganese activated zinc silicate and/or manganese activated magnesium gallate in which part of the gallium may be replaced by aluminium. The second material may have a composition x AO, y BaO, z MgO, P 2 O 5 : p EuO wherein A is strontium and or calcium and 1À90 # x + y + z + p # 2À05; 0 # y # 1À2; 0 # z # 1À6; y + z # 1À6; and 0À005 # p # 0À21. The second material may alternatively be defined by (Ba x Sr y Eu z O) 3 . MgO. (SiO 2 ) 2 where 0À90 # x + y + p # 1À05; 0 # y # 0À75; 0À003 # p # 0À05. The luminescent material can be coated on the inside of an envelope with an intervening reflector layer of titanium oxide. A strip of the envelope may be left uncoated to provide intense illumination.
GB1630771A 1970-05-25 1971-05-21 Discharge lamps Expired GB1326686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7007559A NL7007559A (en) 1970-05-25 1970-05-25

Publications (1)

Publication Number Publication Date
GB1326686A true GB1326686A (en) 1973-08-15

Family

ID=19810151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1630771A Expired GB1326686A (en) 1970-05-25 1971-05-21 Discharge lamps

Country Status (6)

Country Link
BE (1) BE767554A (en)
CA (1) CA952964A (en)
DE (1) DE2122591A1 (en)
FR (1) FR2093701A5 (en)
GB (1) GB1326686A (en)
NL (1) NL7007559A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209624A (en) * 1987-09-04 1989-05-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Low-pressure mercury vapour discharge lamp for uv irradiation
EP1566200A1 (en) * 1998-05-01 2005-08-24 Dusa Pharmaceuticals, Inc. Illuminator for photodynamic therapy

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209624A (en) * 1987-09-04 1989-05-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Low-pressure mercury vapour discharge lamp for uv irradiation
US4933600A (en) * 1987-09-04 1990-06-12 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. Low-pressure mercury vapor discharge lamp, particularly ultra-violet radiator, also providing visible light output
GB2209624B (en) * 1987-09-04 1992-04-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Low-pressure mercury vapour discharge lamp for uv irradiation
EP1566200A1 (en) * 1998-05-01 2005-08-24 Dusa Pharmaceuticals, Inc. Illuminator for photodynamic therapy
US7190109B2 (en) 1998-05-01 2007-03-13 Dusa Pharmaceuticals, Inc. Illuminator for photodynamic therapy
US7723910B2 (en) 1998-05-01 2010-05-25 Dusa Pharmaceuticals, Inc. Method of photodynamically diagnosing or treating a contoured surface
US8030836B2 (en) 1998-05-01 2011-10-04 Dusa Pharmaceuticals, Inc. Illuminator for photodynamic therapy
US8216289B2 (en) 1998-05-01 2012-07-10 Dusa Pharmaceuticals, Inc. Illuminator for photodynamic therapy
US8758418B2 (en) 1998-05-01 2014-06-24 Dusa Pharmaceuticals, Inc. Illuminator for photodynamic therapy
US9723991B2 (en) 1998-05-01 2017-08-08 Dusa Pharmaceuticals, Inc. Illuminator for photodynamic therapy

Also Published As

Publication number Publication date
CA952964A (en) 1974-08-13
NL7007559A (en) 1971-11-29
BE767554A (en) 1971-11-24
FR2093701A5 (en) 1972-01-28
DE2122591A1 (en) 1971-12-09

Similar Documents

Publication Publication Date Title
GB1458700A (en) Low-pressure mercury vapour discharge lamp apparatus suitable for use in mixing and dispensing a multi-
WO2000011106A1 (en) Red light-emitting afterglow photoluminescence phosphor and afterglow lamp using the phosphor
JPH0950786A (en) Phosphorescent lamp
KR890001231B1 (en) Fluorescent lamp
GB1466588A (en) High pressure mercury vapour discharge lamps
GB1208594A (en) Preparation of phosphors
US2607014A (en) Electric gaseous discharge device
DE3461504D1 (en) Luminescent screen
GB1205375A (en) Fluorescent lamps of improved colour rendition
GB1326686A (en) Discharge lamps
US3260675A (en) Calcium and magnesium silicate phosphors with activator comprising terbium
GB1483243A (en) Mercury vapour discharge lamp
US3422024A (en) Strontium and barium substituted lanthanum phosphate phosphors
JPS6471053A (en) Fluorescent high-pressure mercury lamp
GB1333835A (en) Luminescent materials
GB1192730A (en) Luminescent Materials
JP2589491B2 (en) Fluorescent lamp
GB1125180A (en) Improvements in calcium halophosphate phosphors
JPS6219474B2 (en)
JPS5592789A (en) Fluorescent lamp having excellent color rendering
JPS5822495B2 (en) Aluminate phosphor
GB1405153A (en) 40 watt fluorescent lamp
GB1496438A (en) Electric gas discharge lamp
JPS5564358A (en) Fluorescent lamp
JPS57128778A (en) Fluorescent lamp of high color-rendering property

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee