WO1999041768A1 - Kompakte energiesparlampe - Google Patents
Kompakte energiesparlampe Download PDFInfo
- Publication number
- WO1999041768A1 WO1999041768A1 PCT/DE1998/001564 DE9801564W WO9941768A1 WO 1999041768 A1 WO1999041768 A1 WO 1999041768A1 DE 9801564 W DE9801564 W DE 9801564W WO 9941768 A1 WO9941768 A1 WO 9941768A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- phosphor
- compact
- saving lamp
- bsct
- luminescent substances
- Prior art date
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
- C09K11/774—Borates
-
- 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
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
- C09K11/7726—Borates
-
- 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
- C09K11/7734—Aluminates
-
- 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
- C09K11/77344—Aluminosilicates
-
- 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
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/778—Borates
-
- 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
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7784—Chalcogenides
- C09K11/7787—Oxides
-
- 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
Definitions
- the invention relates to a compact energy-saving lamp which is distinguished by a high luminous flux and very good color rendering properties and a long service life.
- the area of application includes low-pressure mercury vapor discharge lamps in lighting and lighting technology.
- Fluorescent lamps generally generate visible light for the purpose of lighting when a suitable excited gas is discharged with the aid of suitable phosphors.
- compact mercury vapor low-pressure discharge lamps consisting of a vacuum-sealed glass bulb filled with mercury and noble gas, which is provided with a fluorescent layer on its inner wall, which emits the short-wave mercury resonance radiation with energies of about 6.7 leV and 4.88 eV in converts visible light, especially common.
- Conventional compact energy-saving lamps have a lifespan of around 8000 hours and, depending on the output, type and color temperature, have a luminous flux of between around 250 Im and 4300 Im.
- the energy-saving lamp works according to the three-band principle and contains the phosphor Eu-activated yttrium oxide (YOX) as a red component and in lamps with a higher color temperature the phosphor Eu-activated aluminate such as BAM and / or SAE as an additional broadband blue component.
- YOX phosphor Eu-activated yttrium oxide
- compounds are preferably used as green components which, owing to their typical terbium emission, emit narrowband with a maximum wavelength of approximately 541-543 nm.
- EP 023 068 describes a fluorescent lamp in which the gadolinium magnesium pentaborate: Ce, Tb (CBT) phosphor with an emission maximum at 542 nm is used. In addition to comparable good emission properties, this phosphor has a higher stability compared to the CAT or LAP phosphors. It is known from catalogs from various fluorescent lamp manufacturers that compact energy-saving lamps, as the following table shows,
- EP 0 550 937 A2 has disclosed a low-pressure mercury vapor discharge lamp with a color rendering level IA. Lamps with a higher wall load of E (UV)> 500 W / m 2 are included. The color point (x, y) lies on or near the Planck curve, and the effectiveness of the luminescence is relatively high. However, it is about 25 to 30 percent or more below the effectiveness of comparable standard compact lamps.
- the phosphor layer used in the lamp according to EP 0 550 937 contains three phosphors. The first is a blue-emitting phosphor activated with divalent europium. The second phosphor is activated with divalent manganese and has at least one emission band in the red spectral range. The third phosphor, which has its main emission in the yellow spectral range, is an activated with divalent europium (strontium, barium, calcium) - orthosilicate.
- the object of the invention is to improve the quality of use of the compact energy-saving lamp, high initial luminous flux and improved color rendering properties with a long service life to be achieved.
- This object is achieved in that the compact energy-saving lamp with a very similar color temperature between 2300 K and 6500 K, consisting of a vacuum-tight discharge vessel filled with mercury and noble gas, on the inner wall of which contains a silicon and / or aluminum and / or boron between 2300 K and 6500 K, consisting of a vacuum-tight discharge vessel filled with mercury and noble gas, on the inner wall of which contains a silicon and / or aluminum and / or boron Between
- the luminescent layer is arranged, and means for maintaining the discharge, the power density of the power absorbed by the column based on the luminescent layer preferably being greater than 500 W / m 2 and the UV radiation predominantly energies greater than 3.5 eV has to be produced by the fact that the luminescent layer contains at least two phosphors, one of which according to the invention consists of green-emitting gadolinium-magnesium-borate-silicate, activated with cerium and terbium (BSCT) with the composition (Y, La),. x . y . z Ce x Gd y Tb z (Mg, Zn, Cd),.
- BSCT cerium and terbium
- a further third or a fourth phosphor is activated with bivalent europium.
- BAM Barium magnesium aluminate
- Ba, -X Eu x Mg Al ⁇ 0 O ⁇ used, where 0.02 ⁇ x ⁇ 0.2.
- Tab. 2 contains some selected results.
- the relative luminous flux is given in percent, based on a standard compact lamp with an analog color temperature.
- manganese-activated borate silicate (BSCM) with the composition is a fourth or fifth phosphor in the form of an additional broadband-emitting red component
- the relative luminous flux is given in percent, based on a standard compact lamp with an analog color temperature.
- the phosphor mixtures required in the special case must be determined separately, be it empirically or by mathematical modeling, but what about those with the phosphors used in the Compact lamp parameters to change nothing.
- CORRECTED SHEET (RULE 91) ISA / EP All listed compact lamp types are characterized in that a thin protective layer made of a highly reflective radiation and discharge-stable material and / or a protective layer can be applied to the inside of the phosphor layer on the inside of the glass bulb.
- a phosphor layer is generally applied to the inner wall of the lamp bulb by dispersing the phosphor or the phosphor mixture in a viscous medium which consists of an organic binder such as, for example, hydroxyethyl cellulose or polyox and a solvent.
- the phosphor suspension is distributed on the glass bulb to form a uniform film, which is dried by applying heat and introducing air by evaporating the solvent, generally water.
- the organic components of the binder are in a burnout process by briefly heating the fluorescent-coated glass bulb with air or oxygen supply to max. 660 ° C away.
- the processing properties of the suspension can be improved by solubilizers, wetting and defoaming agents.
- additives which increase the adhesion of the layer such as borates or phosphates or which improve the stability of individual phosphors, and substances for pH adjustment can be added to the suspension. By adding substances with a high specific surface, the density of the layer can be increased and the use of fluorescent material can be reduced.
- the lamp life can also be extended by applying a protective layer on the inside of the phosphor layer, which is thereby more or less completely covered.
- All of the protective layers mentioned can be produced in different ways, firstly by applying several suspensions in succession after each layer has dried and burned out, secondly by different combinations of two organic binders for each individual layer and a common burnout process, and thirdly by separating and decomposing a volatile compound is introduced into the lamp bulb.
- Experiment lamps are produced using phosphor mixtures No. 1-10 according to Table 4 by adding 100 g of phosphor mixture in 33 ml of deionized water, 0.5 ml of Dispex, 80 ml of 5% polyox, 2.5 ml of Arkopal and 35 ml 10% Alon-C solution are dispersed. A pH of 9.5 is set by adding monoethanolamine. The lamps are burned out after drying in an air stream at 550 ° C. With a viscosity of the suspension of 1.5 dPas, a covering mass of approx. 4.5 mg-cm "2 of the burned-out lamp is achieved.
- Example 2 Example 2:
- Compact energy-saving lamps according to Example 1-4 are provided with a continuous layer of aluminum oxide, which is applied to the surface of the phosphor layer.
- This protective layer is produced by introducing a carrier gas mixture of nitrogen and oxygen into aluminum isopropoxide at about 160 ° C. and then thermally decomposing the aluminum isopropoxide vapor when the loaded carrier gas is introduced into a lamp bulb heated to 500 ° C.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Luminescent Compositions (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54087299A JP3438898B2 (ja) | 1998-02-16 | 1998-06-05 | コンパクトな省エネルギーランプ |
US09/403,138 US6489716B1 (en) | 1998-02-16 | 1998-06-05 | Compact, energy-saving lamp |
HK00106622A HK1027665A1 (en) | 1998-02-16 | 2000-10-19 | Compact, energy-saving lamp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19806213.3 | 1998-02-16 | ||
DE19806213A DE19806213B4 (de) | 1998-02-16 | 1998-02-16 | Kompakte Energiesparlampe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999041768A1 true WO1999041768A1 (de) | 1999-08-19 |
Family
ID=7857812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/001564 WO1999041768A1 (de) | 1998-02-16 | 1998-06-05 | Kompakte energiesparlampe |
Country Status (7)
Country | Link |
---|---|
US (1) | US6489716B1 (de) |
JP (1) | JP3438898B2 (de) |
KR (1) | KR20000071152A (de) |
CN (1) | CN1139968C (de) |
DE (1) | DE19806213B4 (de) |
HK (1) | HK1027665A1 (de) |
WO (1) | WO1999041768A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1158559A2 (de) * | 2000-05-19 | 2001-11-28 | Philips Corporate Intellectual Property GmbH | Plasmabildschirm mit Terbium(III)-aktiviertem Leuchtstoff |
US7679101B2 (en) | 2000-12-28 | 2010-03-16 | Toyoda Gosei Co., Ltd. | Light emitting device |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10152217A1 (de) * | 2001-10-23 | 2003-04-30 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Leuchtstoffzusammensetzung für Niederdruckentladungslampen |
US7282848B2 (en) * | 2003-05-22 | 2007-10-16 | General Electric Company | Fluorescent lamp having phosphor layer that is substantially free from calcium carbonate |
US20080224591A1 (en) * | 2004-01-23 | 2008-09-18 | Koninklijke Philips Electronic, N.V. | Low-Pressure Mercury Discharge Lamp and Process for Its Preparation |
US20090079324A1 (en) * | 2007-09-20 | 2009-03-26 | Istvan Deme | Fluorescent lamp |
DE102009052468A1 (de) | 2009-11-09 | 2011-05-12 | Osram Gesellschaft mit beschränkter Haftung | Leuchtstoffzusammensetzung für Niederdruckentladungslampen |
US9234129B2 (en) | 2010-08-14 | 2016-01-12 | Seoul Semiconductor Co., Ltd. | Surface-modified quantum dot luminophores |
US9196785B2 (en) | 2010-08-14 | 2015-11-24 | Seoul Semiconductor Co., Ltd. | Light emitting device having surface-modified quantum dot luminophores |
DE102010034322A1 (de) | 2010-08-14 | 2012-02-16 | Litec-Lp Gmbh | Oberflächenmodifizierter Silikatleuchtstoffe |
US9614129B2 (en) | 2010-08-14 | 2017-04-04 | Seoul Semiconductor Co., Ltd. | Light emitting device having surface-modified luminophores |
DE102011080144A1 (de) * | 2011-07-29 | 2013-01-31 | Osram Ag | Leuchtstoffzusammensetzung für eine Niederdruckentladungslampe und Niederdruckentladungslampe |
DE102012203419A1 (de) | 2011-07-29 | 2013-01-31 | Osram Ag | Leuchtstoff und Leuchtstofflampe denselben enthaltend |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2058117A (en) * | 1979-08-03 | 1981-04-08 | Kasei Optonix | Borate phosphor |
JPS57128780A (en) * | 1981-02-02 | 1982-08-10 | Kasei Optonix Co Ltd | Fluorescent lamp |
EP0100122A1 (de) * | 1982-07-30 | 1984-02-08 | Koninklijke Philips Electronics N.V. | Niederdruckquecksilberdampflampe |
EP0488330A2 (de) * | 1990-11-28 | 1992-06-03 | Kabushiki Kaisha Toshiba | Fluoreszente Lampe |
US5612590A (en) * | 1995-12-13 | 1997-03-18 | Philips Electronics North America Corporation | Electric lamp having fluorescent lamp colors containing a wide bandwidth emission red phosphor |
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NL160869C (nl) * | 1972-11-03 | Philips Nv | Luminescerend scherm, alsmede ontladingslamp en katho- de straalbuis, voorzien van een dergelijk scherm. | |
US4058639A (en) * | 1975-12-09 | 1977-11-15 | Gte Sylvania Incorporated | Method of making fluorescent lamp |
DE2908890A1 (de) * | 1979-03-07 | 1980-09-18 | Patra Patent Treuhand | Quecksilberdampf-niederdruckentladungslampe |
NL7905680A (nl) * | 1979-07-23 | 1981-01-27 | Philips Nv | Luminescerend scherm. |
JPS56143654A (en) * | 1980-04-08 | 1981-11-09 | Toshiba Corp | Fluorescent lamp |
DE3023397A1 (de) * | 1980-06-23 | 1982-01-07 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Verfahren zur verringerung des zeitlichen abfalls der lichtausbeute bei leuchtstofflampen |
JPS5767030A (en) * | 1980-10-07 | 1982-04-23 | Sasaki Glass Kk | Gob shaper of glass molding machine |
NL8100346A (nl) * | 1981-01-26 | 1982-08-16 | Philips Nv | Luminescerend scherm. |
JPS57202638A (en) * | 1981-06-09 | 1982-12-11 | Toshiba Corp | Fluorescent lamp |
JPS6010065B2 (ja) * | 1981-06-16 | 1985-03-14 | 株式会社東芝 | 緑色発光螢光体 |
NL8202778A (nl) * | 1982-07-09 | 1984-02-01 | Philips Nv | Lagedrukkwikdampontladingslamp. |
JPS5920378A (ja) * | 1982-07-26 | 1984-02-02 | Mitsubishi Electric Corp | 螢光体およびこの螢光体を使用した低圧水銀蒸気放電灯 |
DE3505477A1 (de) * | 1985-02-16 | 1986-08-21 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verfahren zum herstellen eines leuchtstoffes und verwendung eines solchen leuchtstoffes |
NL8502025A (nl) * | 1985-07-15 | 1987-02-02 | Philips Nv | Lagedrukkwikdampontladingslamp. |
NL8600023A (nl) * | 1986-01-08 | 1987-08-03 | Philips Nv | Lagedrukkwikdampontladingslamp. |
US4704321A (en) | 1986-11-05 | 1987-11-03 | E. I. Du Pont De Nemours And Company | Stitched polyethylene plexifilamentary sheet |
US4923425A (en) * | 1987-06-12 | 1990-05-08 | Gte Products Corporation | Fluorescent lamp with a predetermined CRI and method for making |
US4891550A (en) * | 1987-10-15 | 1990-01-02 | Duro-Test Corporation | Phosphor blend for broad spectrum fluorescent lamp |
US5525259A (en) * | 1990-12-20 | 1996-06-11 | Gte Products Corporation | Europium-doped yttrium oxide phosphor |
DE4142215A1 (de) * | 1991-12-20 | 1993-06-24 | Philips Patentverwaltung | Verfahren zur sedimentation von leuchtstoffpartikeln auf der basis von dotierten seltenerdoxidhalogeniden |
DE69218387T2 (de) * | 1992-01-07 | 1997-09-18 | Philips Electronics Nv | Niederdruckquecksilberentladungslampe |
ES2127243T3 (es) * | 1992-09-23 | 1999-04-16 | Koninkl Philips Electronics Nv | Lampara de descarga en mercurio a baja presion. |
DE69431331T2 (de) * | 1993-07-30 | 2003-06-18 | Toshiba Kawasaki Kk | Lumineszentes Material für Quecksilberentladungslampe |
US5602444A (en) * | 1995-08-28 | 1997-02-11 | General Electric Company | Fluorescent lamp having ultraviolet reflecting layer |
CA2185957A1 (en) * | 1995-10-11 | 1997-04-12 | Jon Bennett Jansma | Fluorescent lamp having phosphor layer with additive |
DE19730006A1 (de) * | 1997-07-12 | 1999-01-14 | Walter Dipl Chem Dr Rer N Tews | Kompakte Energiesparlampe mit verbesserter Farbwiedergabe |
DE19730005C2 (de) * | 1997-07-12 | 1999-11-25 | Walter Tews | Silikat-Borat-Leuchtstoffe |
US6085971A (en) * | 1998-07-10 | 2000-07-11 | Walter Tews | Luminescent meta-borate substances |
-
1998
- 1998-02-16 DE DE19806213A patent/DE19806213B4/de not_active Expired - Fee Related
- 1998-06-05 JP JP54087299A patent/JP3438898B2/ja not_active Expired - Fee Related
- 1998-06-05 KR KR1019997007442A patent/KR20000071152A/ko not_active Application Discontinuation
- 1998-06-05 WO PCT/DE1998/001564 patent/WO1999041768A1/de not_active Application Discontinuation
- 1998-06-05 CN CNB988011840A patent/CN1139968C/zh not_active Expired - Fee Related
- 1998-06-05 US US09/403,138 patent/US6489716B1/en not_active Expired - Fee Related
-
2000
- 2000-10-19 HK HK00106622A patent/HK1027665A1/xx not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2058117A (en) * | 1979-08-03 | 1981-04-08 | Kasei Optonix | Borate phosphor |
JPS57128780A (en) * | 1981-02-02 | 1982-08-10 | Kasei Optonix Co Ltd | Fluorescent lamp |
EP0100122A1 (de) * | 1982-07-30 | 1984-02-08 | Koninklijke Philips Electronics N.V. | Niederdruckquecksilberdampflampe |
EP0488330A2 (de) * | 1990-11-28 | 1992-06-03 | Kabushiki Kaisha Toshiba | Fluoreszente Lampe |
US5612590A (en) * | 1995-12-13 | 1997-03-18 | Philips Electronics North America Corporation | Electric lamp having fluorescent lamp colors containing a wide bandwidth emission red phosphor |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 227 (C - 134) 12 November 1982 (1982-11-12) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1158559A2 (de) * | 2000-05-19 | 2001-11-28 | Philips Corporate Intellectual Property GmbH | Plasmabildschirm mit Terbium(III)-aktiviertem Leuchtstoff |
EP1158559A3 (de) * | 2000-05-19 | 2004-05-19 | Philips Intellectual Property & Standards GmbH | Plasmabildschirm mit Terbium(III)-aktiviertem Leuchtstoff |
US7679101B2 (en) | 2000-12-28 | 2010-03-16 | Toyoda Gosei Co., Ltd. | Light emitting device |
Also Published As
Publication number | Publication date |
---|---|
HK1027665A1 (en) | 2001-01-19 |
US6489716B1 (en) | 2002-12-03 |
DE19806213A1 (de) | 1999-08-26 |
KR20000071152A (ko) | 2000-11-25 |
DE19806213B4 (de) | 2005-12-01 |
CN1139968C (zh) | 2004-02-25 |
JP3438898B2 (ja) | 2003-08-18 |
JP2000510647A (ja) | 2000-08-15 |
CN1251687A (zh) | 2000-04-26 |
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