EP1156514A1 - Glühlampe - Google Patents
Glühlampe Download PDFInfo
- Publication number
- EP1156514A1 EP1156514A1 EP01108874A EP01108874A EP1156514A1 EP 1156514 A1 EP1156514 A1 EP 1156514A1 EP 01108874 A EP01108874 A EP 01108874A EP 01108874 A EP01108874 A EP 01108874A EP 1156514 A1 EP1156514 A1 EP 1156514A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refractive
- optically
- layers
- interference filter
- light
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
-
- 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
- H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
Definitions
- the invention relates to an incandescent lamp according to the preamble of the claim 1.
- Such an incandescent lamp is, for example, in the European patent application EP 0 986 093 A1.
- This document describes an incandescent lamp, the lamp vessel an interference filter coating with locally different layer thickness having.
- the layer thickness of the interference filter varies such that all areas of the Interference filter-coated lamp vessel when the incandescent lamp is switched on Emit light of the same color composition.
- the light bulb is as one orange or red light emitting vehicle signal lamp.
- the light bulb according to the invention is essentially translucent rotationally symmetrical lamp vessel, one enclosed by the lamp vessel Filament and one arranged on the lamp vessel, designed as an edge filter Interference filter equipped, the interference filter optically low refractive index and optically high refractive index layers for adjusting the edge of the interference filter in the red spectral range.
- the interference filter according to the invention at least two absorber layers, each with one arranged in between optically low refractive index layer for the absorption of blue and violet light as well as additional optically low refractive and optically high refractive index Layers to further suppress light from the violet and blue spectral range.
- the interference filter advantageously consists of at least four stacks of Layers wherein the first stack is arranged directly on the lamp vessel and the at least two absorber layers, each with one in between optically low refractive index layer for the absorption of blue and contains violet light, and wherein at least one of the subsequent stacks the contains additional optically low-refractive and optically high-refractive layers, whose layer thicknesses are optimized so that this at least one stack a low transmission for light from the violet and blue spectral range and has a high transmission for light from the red spectral range, and the other stacks being optically low refractive and optically high refractive Layers for setting the edge of the interference filter in the red spectral range contain.
- the layer thicknesses of the optically low refractive index and optically high refractive index Layers of these stacks are optimized so that the edge of the interference filter is in the wavelength range from 580 nm to 600 nm. In this way an interference filter with comparatively few layers can be produced, which in the wavelength range from 580 nm to 600 nm has a steep transition from the spectral range of low transmission to the spectral range of high transmission owns.
- the first stack advantageously contains at least two absorber layers made of iron oxide Fe 2 O 3 , each with an optically low-refractive layer arranged between them.
- Iron oxide is a material with a comparatively high optical refractive index. With a sufficiently thin layer thickness, the iron oxide layers have metallic properties in the violet and blue spectral range and dielectric properties in the red spectral range.
- the interference effect in combination with the optically high-refractive iron oxide layers is used by adapting and optimizing their layer thickness in order to ensure high transmission of the first stack for light from the red spectral range and high reflection of the first stack for light from the blue spectral range to reach.
- the preferred embodiment of the invention is a Incandescent lamp with an electrical power consumption of approximately 25 W, for example as a light source in the rear light to generate the tail light or Brake lights can be used.
- This incandescent lamp has a bayonet-like lamp base 10 and a pear-shaped one which is rotationally symmetrical about the lamp axis A-A Lamp vessel 20 made of glass, which encloses a filament (not shown).
- the outer surface of the lamp vessel 20 is coated with an interference filter 30, that has a high transmission for red light and for light of others Spectral ranges is almost impermeable.
- the layer thickness of the interference filter 30 varies locally depending on the angle of incidence of the emitted by the filament and light incident on the interference filter 30.
- the interference filter 30 has the smallest layer thickness and near the base the greatest layer thickness.
- the layer thickness of the interference filter 30 increases steadily from the top to the base. The difference between the least and the maximum layer thickness is approximately 7 percent.
- the layer thickness of the interference filter 30 is constant.
- the Interference filter 30 consists of a total of 28 layers, which are in five stacks 31-35 are arranged.
- the first stack 31 which is attached directly to the lamp vessel 20, consists of a first absorber layer made of Fe 2 O 3 with a physical layer thickness of approximately 8 nm and a second absorber layer made of Fe 2 O 3 with a physical layer thickness of approximately 14 nm and an optically low-refractive intermediate layer made of SiO 2 arranged between the two absorber layers and having a physical layer thickness of approximately 87 nm.
- FIG. 3 shows curve 1 as a function of the light wavelength as a function of the light wavelength.
- the second stack 32 is formed by a layer sequence repeated once, which consists of an optically high-index layer of TiO 2 with a physical layer thickness of approximately 12 nm, an optically low-index layer of SiO 2 with a physical layer thickness of approximately 40 nm and an optically high-index layer Layer consists of TiO 2 with a physical layer thickness of 25 nm.
- the second stack 32 is optional. It brings an additional reduction in the transmission of the interference filter 30 in the violet spectral range. Its transmission behavior is not shown in FIG. 3.
- the third stack 33 is formed by a twice-repeated layer sequence, which consists of an optically high-index layer of TiO 2 with a physical layer thickness of approximately 14 nm, an optically low-index layer of SiO 2 with a physical layer thickness of 77 nm and an optically high-index layer consists of TiO 2 with a physical layer thickness of approx. 14 nm.
- This third stack 33 has a low transmission for light from the violet and blue spectral range and a high transmission for light from the red spectral range. In addition to the absorption filter, it serves to further suppress violet and blue light.
- FIG. 3 shows the transmission behavior of the third stack 33 as a function of the light wavelength by curve 2.
- the fourth stack 34 is formed by a twice-repeated layer sequence, which consists of an optically high-index layer of TiO 2 with a physical layer thickness of approximately 24 nm, an optically low-index layer of SiO 2 with a physical layer thickness of 79 nm and an optically high-index layer TiO 2 with a physical layer thickness of 24 nm.
- the curve 3 in FIG. 3 shows the transmission behavior of the fourth stack 34 as a function of the light wavelength.
- the fifth stack 35 is formed by a layer sequence repeated three times, which consists of an optically high-index layer of TiO 2 with a physical layer thickness of approximately 25 nm, an optically low-index layer of SiO 2 with a physical layer thickness of 86 nm and an optically high-index layer consists of TiO 2 with a physical layer thickness of 24 nm.
- Curve 4 of FIG. 3 shows the transmission behavior of the fifth stack 35 as a function of the light wavelength. All layer thickness information relates to the tip of the lamp vessel 20.
- the fourth 34 and fifth stacks 35 serve to adjust the edge of the interference filter 30 at approximately 590 nm.
- the layer thicknesses of the SiO 2 and TiO 2 layers of these two stacks are optimized in such a way that the interference filter 30 at a light wavelength of approximately 590 nm has a steep transition from the short-wave spectral range of low transmission to the long-wave spectral range of high transmission.
- FIG. 3 shows the transmission behavior of the entire interference filter 30 as a function of the light wavelength by curve 5.
- the five stacks 31-35 follow one another seamlessly.
- the interference filter 30 therefore has 28 layers.
Landscapes
- Optical Filters (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Eye Examination Apparatus (AREA)
- Endoscopes (AREA)
Abstract
Description
- Figur 1
- Eine Seitenansicht einer Glühlampe gemäß des bevorzugten Ausführungsbeispiels der Erfindung
- Figur 2
- Einen vergrößerten Ausschnitt des Lampengefäßes der in Figur 1 abgebildeten Glühlampe in geschnittener, schematischer Darstellung
- Figur 3
- Transmissionskurven des Interferenzfilters und der einzelnen Stapel des Interferenzfilters der Glühlampe gemäß des bevorzugten Ausführungsbeispiels
Claims (5)
- Glühlampe mit einem lichtdurchlässigen, im wesentlichen rotationssymmetrischen Lampengefäß (20), einer vom Lampengefäß (20) umschlossenen Glühwendel und einem auf dem Lampengefäß (20) angeordneten, als Kantenfilter ausgebildeten Interferenzfilter (30), wobeidas Interferenzfilter (30) optisch niedrigbrechende und optisch hochbrechende Schichten zur Einstellung der Kante des Interferenzfilters (30) im roten Spektralbereich aufweist,die Schichtdicken der optisch niedrigbrechenden und optisch hochbrechenden Schichten, in Abhängigkeit des Einfallswinkels des von der Glühwendel emittierten und auf das Interferenzfilter auftreffenden Lichts, lokal unterschiedlich ist,das Interferenzfilter (30) Absorberschichten zur Absorption von blauem und violettem Licht aufweist,
das Interferenzfilter mindestens zwei dieser Absorberschichten mit jeweils einer dazwischen angeordneten optisch niedrigbrechenden Zwischenschicht aufweist und zusätzliche optisch niedrigbrechende und optisch hochbrechende Schichten zur weiteren Unterdrückung von Licht aus dem violetten und blauen Spektralbereich besitzt. - Glühlampe nach Anspruch 1, dadurch gekennzeichnet, daß das Interferenzfilter aus mindestens vier Stapeln (31, 33, 34, 35) von Schichten besteht, wobeider erste Stapel (31), der unmittelbar auf dem Lampengefäß (20) angeordnet ist, die mindestens zwei Absorberschichten mit der dazwischen angeordneten, optisch niedrigbrechenden Zwischenschicht enthält,mindestens einer der nachfolgenden Stapel (33) die zusätzlichen optisch niedrigbrechenden und optisch hochbrechenden Schichten enthält, wobei deren Schichtdicken derart optimiert ist, daß dieser mindestens eine Stapel (33) eine geringe Transmission für Licht aus dem violetten und blauen Spektralbereich und eine hohe Transmission für Licht aus dem roten Spektralbereich besitzt,die anderen Stapel (34, 35) die optisch niedrigbrechenden und optisch hochbrechenden Schichten zur Einstellung der Kante des Interferenzfilters (30) im roten Spektralbereich enthalten, wobei die Schichtdicken der optisch niedrigbrechenden und optisch hochbrechenden Schichten dieser Stapel (34, 35) derart optimiert sind, daß die Kante des Interferenzfilters (30) in dem Wellenlängenbereich von 580 nm bis 600 nm liegt.
- Glühlampe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die mindestens zwei Absorberschichten aus Eisenoxid bestehen und die Schichtdicken der mindestens zwei Absorberschichten so optimiert sind, daß die Absorberschichten im violetten und blauen Spektralbereich metallische Eigenschaften und im roten Spektralbereich dielektrische Eigenschaften besitzen, und wobei die Schichtdicke der jeweiligen Zwischenschicht derart optimiert und auf die Schichtdicken der mindestens zwei Absorberschichten abgestimmt ist, daß die jeweilige Zwischenschicht und die mindestens zwei Absorberschichten eine hohe Transmission im roten Spektralbereich besitzen.
- Fahrzeugleuchte mit einer Glühlampe nach Anspruch 1, 2 oder 3.
- Verwendung einer Glühlampe nach Anspruch 1, 2 oder 3 als Schlußlicht- oder Bremslichtlampe.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10023936 | 2000-05-17 | ||
DE10023936A DE10023936C2 (de) | 2000-05-17 | 2000-05-17 | Glühlampe, Fahrzeugleuchte mit einer Glühlampe und Verwendung einer Glühlampe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1156514A1 true EP1156514A1 (de) | 2001-11-21 |
EP1156514B1 EP1156514B1 (de) | 2010-12-22 |
Family
ID=7642235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01108874A Expired - Lifetime EP1156514B1 (de) | 2000-05-17 | 2001-04-09 | Glühlampe |
Country Status (6)
Country | Link |
---|---|
US (1) | US6661164B2 (de) |
EP (1) | EP1156514B1 (de) |
AT (1) | ATE492903T1 (de) |
BR (1) | BR0102002A (de) |
CA (1) | CA2347603A1 (de) |
DE (2) | DE10023936C2 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006081802A2 (de) * | 2005-02-07 | 2006-08-10 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Nir-glühlampe |
US7176606B2 (en) | 2003-05-07 | 2007-02-13 | Patent-Treuhand-Gesellschaft Fur Elektrisch Gluhlampen Mbh | Lamp that emits colored light |
DE102007009013A1 (de) | 2007-02-23 | 2008-08-28 | Osram Gesellschaft mit beschränkter Haftung | Rückstrahler |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19941531A1 (de) * | 1999-09-01 | 2001-03-08 | Philips Corp Intellectual Pty | Farbige Signalleuchte mit eisenoxidpigmentbeschichteter Lampe |
WO2003046946A1 (fr) * | 2001-11-29 | 2003-06-05 | Matsushita Electric Industrial Co., Ltd. | Lampe fluorescente sans electrode |
WO2003071583A1 (en) * | 2002-02-22 | 2003-08-28 | Koninklijke Philips Electronics N.V. | Electric lamp |
US6906464B2 (en) | 2002-05-13 | 2005-06-14 | Federal-Mogul World Wide, Inc. | Red incandescent automotive lamp and method of making the same |
DE10311907B4 (de) * | 2003-03-17 | 2006-11-02 | Schollglas Holding- und Geschäftsführungsgesellschaft mbH | Duschkabine mit gemauerten und/oder transparenten Duschtrennwänden |
KR20070001882A (ko) * | 2003-11-25 | 2007-01-04 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | 전기 램프 |
JP2008511099A (ja) * | 2004-08-20 | 2008-04-10 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 光吸収媒体を有する電気ランプ |
DE102004055081A1 (de) * | 2004-11-15 | 2006-05-18 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Glühlampe mit Absorptions- und Interferenzfilter |
ES2289957B1 (es) * | 2007-02-07 | 2008-12-01 | Universidad Complutense De Madrid | Fuente de iluminacion con emision reducida de longitudes de onda corta para la proteccion de ojos. |
WO2009156899A1 (en) * | 2008-06-23 | 2009-12-30 | Koninklijke Philips Electronics N.V. | Multilayer filter for lamps. |
DE102009053822A1 (de) * | 2009-11-18 | 2011-05-19 | Osram Gesellschaft mit beschränkter Haftung | Temperaturstrahler mit selektiver spektraler Filterung |
US8016468B2 (en) * | 2009-11-25 | 2011-09-13 | Osram Sylvania Inc. | Signal indicator lamp assembly for a vehicle |
IN2014MU03621A (de) * | 2013-11-18 | 2015-10-09 | Jds Uniphase Corp | |
DE102016109519A1 (de) | 2016-05-24 | 2017-11-30 | Osram Gmbh | Eindeckungsteil für ein Gewächshaus, Gewächshaus und Verwendung einer Schicht für ein Eindeckungsteil |
WO2020038884A1 (de) * | 2018-08-23 | 2020-02-27 | HELLA GmbH & Co. KGaA | Filtermittel für eine komponente eines kraftfahrzeugs sowie leuchtmittel mit derartigen filtermitteln |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2577347A3 (fr) * | 1985-02-11 | 1986-08-14 | Philips Nv | Lampe a incandescence a l'halogene coloree |
EP0986093A1 (de) * | 1998-09-10 | 2000-03-15 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Glühlampe |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5200855A (en) * | 1991-07-12 | 1993-04-06 | Optical Coating Laboratory, Inc. | Absorbing dichroic filters |
US5444329A (en) * | 1992-11-06 | 1995-08-22 | Kabushiki Kaisha Toshiba | Antireflection film and display apparatus comprising the same |
US5552671A (en) * | 1995-02-14 | 1996-09-03 | General Electric Company | UV Radiation-absorbing coatings and their use in lamps |
US6356020B1 (en) * | 1998-07-06 | 2002-03-12 | U.S. Philips Corporation | Electric lamp with optical interference coating |
-
2000
- 2000-05-17 DE DE10023936A patent/DE10023936C2/de not_active Expired - Fee Related
-
2001
- 2001-04-09 EP EP01108874A patent/EP1156514B1/de not_active Expired - Lifetime
- 2001-04-09 AT AT01108874T patent/ATE492903T1/de active
- 2001-04-09 DE DE50115746T patent/DE50115746D1/de not_active Expired - Lifetime
- 2001-05-03 US US09/847,369 patent/US6661164B2/en not_active Expired - Lifetime
- 2001-05-15 CA CA002347603A patent/CA2347603A1/en not_active Abandoned
- 2001-05-16 BR BR0102002-1A patent/BR0102002A/pt not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2577347A3 (fr) * | 1985-02-11 | 1986-08-14 | Philips Nv | Lampe a incandescence a l'halogene coloree |
EP0986093A1 (de) * | 1998-09-10 | 2000-03-15 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Glühlampe |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7176606B2 (en) | 2003-05-07 | 2007-02-13 | Patent-Treuhand-Gesellschaft Fur Elektrisch Gluhlampen Mbh | Lamp that emits colored light |
EP1482533A3 (de) * | 2003-05-07 | 2007-10-31 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lampe zum Liefern von Farblicht |
WO2006081802A2 (de) * | 2005-02-07 | 2006-08-10 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Nir-glühlampe |
WO2006081802A3 (de) * | 2005-02-07 | 2007-04-26 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Nir-glühlampe |
DE102007009013A1 (de) | 2007-02-23 | 2008-08-28 | Osram Gesellschaft mit beschränkter Haftung | Rückstrahler |
Also Published As
Publication number | Publication date |
---|---|
DE50115746D1 (de) | 2011-02-03 |
US20010043033A1 (en) | 2001-11-22 |
CA2347603A1 (en) | 2001-11-17 |
DE10023936A1 (de) | 2001-11-29 |
US6661164B2 (en) | 2003-12-09 |
ATE492903T1 (de) | 2011-01-15 |
BR0102002A (pt) | 2001-12-26 |
EP1156514B1 (de) | 2010-12-22 |
DE10023936C2 (de) | 2002-06-06 |
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