EP1156514B1 - Incandescent lamp - Google Patents
Incandescent lamp Download PDFInfo
- Publication number
- EP1156514B1 EP1156514B1 EP01108874A EP01108874A EP1156514B1 EP 1156514 B1 EP1156514 B1 EP 1156514B1 EP 01108874 A EP01108874 A EP 01108874A EP 01108874 A EP01108874 A EP 01108874A EP 1156514 B1 EP1156514 B1 EP 1156514B1
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- EP
- European Patent Office
- Prior art keywords
- layers
- interference filter
- optical refraction
- light
- lamp
- 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 - Lifetime
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- 230000003595 spectral effect Effects 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000003287 optical effect Effects 0.000 claims description 16
- 239000006096 absorbing agent Substances 0.000 claims description 14
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000010410 layer Substances 0.000 description 67
- 229910010413 TiO 2 Inorganic materials 0.000 description 9
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000001629 suppression Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
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 patent claim 1.
- Such a light bulb is for example in the European Patent Publication EP 0 986 093 A1 disclosed.
- This document describes an incandescent lamp whose lamp vessel has an interference filter coating with locally different layer thickness.
- the layer thickness of the interference filter varies such that all areas of the interference filter-coated lamp vessel in the on state of the incandescent lamp emit light of the same color composition.
- the incandescent lamp is designed as an orange or red light emitting vehicle signal lamp.
- the incandescent lamp according to the invention is equipped with a translucent, substantially rotationally symmetrical lamp vessel, an incandescent filament enclosed by the lamp vessel and an interference filter formed as an edge filter on the lamp vessel, wherein the interference filter has optically low refractive and optically high refractive layers for adjusting the edge of the interference filter in the red spectral region ,
- the layer thicknesses of the optically low-refractive and optically high-refractive layers are, as a function of the angle of incidence of the light emitted by the filament and incident on the interference filter light, locally different.
- the interference filter has at least two absorber layers, each with an optically low-index intermediate layer for absorbing blue and violet light, and additional optically low-refractive and optically high-index layers for further suppression of light from the violet and blue spectral regions.
- the interference filter consists of at least four stacks of layers, wherein the first stack is arranged directly on the lamp vessel and which contains at least two absorber layers, each with an optically low-refraction intermediate layer for absorbing blue and violet light interposed therebetween, and at least one of the subsequent stacks contains additional optically low-refractive and optically high-refractive layers whose layer thicknesses are optimized so that this at least one stack has a low transmission for light from the violet and blue spectral range and a high transmission for light from the red spectral region, and wherein the other stack the optical low refractive and optically high refractive layers for adjusting the edge of the interference filter in the red spectral region included.
- the layer thicknesses of the optically low refractive and optically high refractive index layers of these stacks are optimized such 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 has a steep transition from the low-transmission spectral region to the high-transmission spectral region in the wavelength range from 580 nm to 600 nm.
- the first stack advantageously contains at least two absorber layers of iron oxide Fe 2 O 3 , each with an optically low refractive index layer arranged therebetween.
- Iron oxide is a material with a comparatively high optical Refractive index.
- the iron oxide layers have metallic properties at a sufficiently thin layer thickness in the violet and blue spectral range and dielectric properties in the red spectral range.
- the respective optically low-refractive interlayer exploits the interference effect in combination with the optically high-index iron oxide layers, a high transmission of the first stack for light from the red spectral range and a high reflection of the first stack for light from the blue spectral range to reach.
- incandescent lamp with an electrical power consumption of about 25 W, which can be used for example as a light source in the taillight to produce the tail light or brake light.
- This incandescent lamp has a bayonet-type lamp cap 10 and a glass bulb-shaped lamp vessel 20 which is rotationally symmetrical about the lamp axis AA and encloses an incandescent filament (not shown).
- the outer surface of the lamp vessel 20 is coated with an interference filter 30 which has high transmittance for red light and is nearly opaque to light of other spectral regions.
- the layer thickness of the interference filter 30 varies locally depending on the angle of incidence of the emitted from the filament and incident on the interference filter 30 light.
- the interference filter 30 has the smallest layer thickness and near the base, the largest layer thickness.
- the layer thickness of the interference filter 30 increases steadily from the dome to the base. The difference between the lowest and the largest layer thickness is about 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 arranged in five stacks 31-35.
- the first stack 31 which is mounted directly on the lamp vessel 20, consists of a first absorber layer of Fe 2 O 3 with a physical layer thickness of about 8 nm and a second absorber layer of Fe 2 O 3 with a physical layer thickness of about 14 nm as well as an optically low - refraction intermediate layer of SiO 2 with a physical layer thickness of approximately 87 nm arranged between the two absorber layers
- FIG. 3 the transmission behavior of the first stack 31 as a function of the light wavelength is represented by the curve 1.
- the second stack 32 is formed by a once repeated layer sequence consisting of an optically high refractive index layer of TiO 2 with a physical layer thickness of approximately 12 nm, an optically low refractive index layer of SiO 2 with a physical layer thickness of approximately 40 nm and an optically high refractive index Layer of TiO 2 with a physical thickness of 25 nm.
- the second stack 32 is optional. It brings an additional reduction of the transmission of the interference filter 30 in the violet spectral range. Its transmission behavior is in FIG. 3 not shown.
- the third stack 33 is formed by a twice repeated layer sequence consisting of an optically high refractive index layer of TiO 2 with a physical layer thickness of approximately 14 nm, an optically low refractive index layer of SiO 2 with a physical layer thickness of 77 nm and an optically high refractive index layer TiO 2 with a physical thickness of about 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 Spetral Scheme. It is used in addition to the absorption filter for further suppression of violet and blue light.
- the transmission behavior of the third stack 33 as a function of the light wavelength is represented by the curve 2.
- the fourth stack 34 is formed by a twice repeated layer sequence consisting of an optically high refractive index layer of TiO 2 with a physical layer thickness of approximately 24 nm, an optically low refractive index layer of SiO 2 with a physical layer thickness of 79 nm and an optically high refractive index layer TiO 2 with a physical layer thickness of 24 nm.
- the curve 3 of FIG. 3 shows the transmission behavior of the fourth stack 34 as a function of the wavelength of light.
- the fifth stack 35 is formed by a three-times repeated layer sequence consisting of an optically high refractive index layer of TiO 2 with a physical layer thickness of about 25 nm, an optically low refractive index layer of SiO 2 with a physical layer thickness of 86 nm and an optically high refractive index layer TiO 2 with a physical layer thickness of 24 nm.
- the curve 4 of FIG. 3 shows the transmission behavior of the fifth stack 35 as a function of the wavelength of light. All layer thickness specifications refer to the top of the lamp vessel 20th
- 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 such that the interference filter 30 is at a light wavelength of approximately 590 nm has a steep transition from the short-wave spectral region of low transmission to the long-wave spectral region of high transmission.
- the transmission behavior of the entire interference filter 30 as a function of the light wavelength is represented by the curve 5.
- the five stacks 31-35 follow each other seamlessly.
- the interference filter 30 therefore has 28 layers.
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- Optical Filters (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Eye Examination Apparatus (AREA)
- Endoscopes (AREA)
Abstract
Description
Die Erfindung betrifft eine Glühlampe gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to an incandescent lamp according to the preamble of patent claim 1.
Eine derartige Glühlampe ist beispielsweise in der
Es ist die Aufgabe der Erfindung, eine gattungsgemäße Glühlampe mit einem verbesserten Interferenzfilter zur Erzeugung von rotem Licht bereitzustellen.It is the object of the invention to provide a generic incandescent lamp with an improved interference filter for generating red light.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst. Besonders vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen beschrieben.This object is achieved by the features of claim 1. Particularly advantageous embodiments of the invention are described in the subclaims.
Die erfindungsgemäße Glühlampe ist mit einem lichtdurchlässigen, im wesentlichen rotationssymmetrischen Lampengefäß, einer vom Lampengefäß umschlossenen Glühwendel und einem auf dem Lampengefäß angeordneten, als Kantenfilter ausgebildeten Interferenzfilter ausgestattet, wobei das Interferenzfilter optisch niedrigbrechende und optisch hochbrechende Schichten zur Einstellung der Kante des Interferenzfilters im roten Spektralbereich aufweist. Die Schichtdicken der optisch niedrigbrechenden und optisch hochbrechenden Schichten sind, in Abhängigkeit des Einfallswinkels des von der Glühwendel emittierten und auf das Interferenzfilter auftreffenden Lichts, lokal unterschiedlich. Außerdem weist das Interferenzfilter erfindungsgemäß mindestens zwei Absorberschichter mit jeweils einer dazwischen angeordneten optisch niedrigbrechenden Zwischenschicht zur Absorption von blauem und violettem Licht sowie zusätzliche optisch niedrigbrechende und optisch hochbrechende Schichten zur weiteren Unterdrückung von Licht aus dem violetten und blauen Spektralbereich auf. Durch diese Maßnahmen wird gewährleistet, daß die erfindungsgemäße Glühlampe im wesentlichen rotes Licht emittiert und für die Verwendung als Bremslichtlampe oder Schlußlichtlampe eines Fahrzeugs geeignet ist.The incandescent lamp according to the invention is equipped with a translucent, substantially rotationally symmetrical lamp vessel, an incandescent filament enclosed by the lamp vessel and an interference filter formed as an edge filter on the lamp vessel, wherein the interference filter has optically low refractive and optically high refractive layers for adjusting the edge of the interference filter in the red spectral region , The layer thicknesses of the optically low-refractive and optically high-refractive layers are, as a function of the angle of incidence of the light emitted by the filament and incident on the interference filter light, locally different. In addition, according to the invention, the interference filter has at least two absorber layers, each with an optically low-index intermediate layer for absorbing blue and violet light, and additional optically low-refractive and optically high-index layers for further suppression of light from the violet and blue spectral regions. These measures ensure that the incandescent lamp according to the invention emits substantially red light and is suitable for use as a brake light lamp or tail lamp of a vehicle.
Vorteilhafterweise besteht das Interferenzfilter aus mindestens vier Stapeln von Schichten wobei der erste Stapel unmittelbar auf dem Lampengefäß angeordnet ist und die mindestens zwei Absorberschichten mit jeweils einer dazwischen angeordneten optisch niedrigbrechenden Zwischenschicht zur Absorption von blauem und violettem Licht enthält, und wobei mindestens einer der nachfolgenden Stapel die zusätzlichen optisch niedrigbrechenden und optisch hochbrechenden Schichten enthält, deren Schichtdicken derart optimiert sind, daß dieser mindestens eine Stapel eine geringe Transmission für Licht aus dem violetten und blauen Spektralbereich und eine hohe Transmission für Licht aus dem roten Spektralbereich besitzt, und wobei die anderen Stapel die optisch niedrigbrechenden und optisch hochbrechenden Schichten zur Einstellung der Kante des Interferenzfilters im roten Spektralbereich enthalten. Die Schichtdicken der optisch niedrigbrechenden und optisch hochbrechenden Schichten dieser Stapel sind derart optimiert, daß die Kante des Interferenzfilters in dem Wellenlängenbereich von 580 nm bis 600 nm liegt. Auf diese Weise kann ein Interferenzfilter mit vergleichsweise wenigen Schichten hergestellt werden, das im Wellenlängenbereich von 580 nm bis 600 nm einen steilen Übergang von dem Spektralbereich geringer Transmission zu dem Spektralbereich hoher Transmission besitzt.Advantageously, the interference filter consists of at least four stacks of layers, wherein the first stack is arranged directly on the lamp vessel and which contains at least two absorber layers, each with an optically low-refraction intermediate layer for absorbing blue and violet light interposed therebetween, and at least one of the subsequent stacks contains additional optically low-refractive and optically high-refractive layers whose layer thicknesses are optimized so that this at least one stack has a low transmission for light from the violet and blue spectral range and a high transmission for light from the red spectral region, and wherein the other stack the optical low refractive and optically high refractive layers for adjusting the edge of the interference filter in the red spectral region included. The layer thicknesses of the optically low refractive and optically high refractive index layers of these stacks are optimized such 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 has a steep transition from the low-transmission spectral region to the high-transmission spectral region in the wavelength range from 580 nm to 600 nm.
Der erste Stapel enthält vorteilhafterweise mindestens zwei Absorberschichten aus Eisenoxid Fe2O3 mit jeweils einer dazwischen angeordneten, optisch niedrigbrechenden Schicht. Eisenoxid ist ein Material mit einem vergleichsweise hohen optischen Brechungsindex. Die Eisenoxidschichten besitzen bei ausreichend dünner Schichtdicke im violetten und blauen Spektralbereich metallische Eigenschaften und im roten Spektralbereich dielektrische Eigenschaften. Mit der jeweiligen optisch niedrigbrechenden Zwischenschicht wird durch Anpassung und Optimierung ihrer Schichtdicke der Interferenzeffekt in Kombination mit den optisch hochbrechenden Eisenoxidschichten ausgenutzt, um eine hohe Transmission des ersten Stapels für Licht aus dem roten Spektralbereich und eine hohe Reflexion des ersten Stapels für Licht aus dem blauen Spektralbereich zu erreichen.The first stack advantageously contains at least two absorber layers of iron oxide Fe 2 O 3 , each with an optically low refractive index layer arranged therebetween. Iron oxide is a material with a comparatively high optical Refractive index. The iron oxide layers have metallic properties at a sufficiently thin layer thickness in the violet and blue spectral range and dielectric properties in the red spectral range. By adapting and optimizing its layer thickness, the respective optically low-refractive interlayer exploits the interference effect in combination with the optically high-index iron oxide layers, a high transmission of the first stack for light from the red spectral range and a high reflection of the first stack for light from the blue spectral range to reach.
Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:
- 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
- FIG. 1
- A side view of an incandescent lamp according to the preferred embodiment of the invention
- FIG. 2
- An enlarged section of the lamp vessel of
FIG. 1 pictured incandescent lamp in a sectioned, schematic representation - FIG. 3
- Transmission curves of the interference filter and the individual stacks of the interference filter of the incandescent lamp according to the preferred embodiment
Bei dem bevorzugten Ausführungsbeispiel der Erfindung handelt es sich um eine Glühlampe mit einer elektrischen Leistungsaufnahme von ca. 25 W, die beispielsweise als Lichtquelle in der Heckleuchte zur Erzeugung des Schlußlichts oder Bremslichts verwendbar ist. Diese Glühlampe besitzt einen bajonettartigen Lampensockel 10 und ein um die Lampenachse A-A rotationssymmetrisches, birnenförmiges Lampengefäß 20 aus Glas, das eine Glühwendel (nicht abgebildet) umschließt. Die äußere Oberfläche des Lampengefäßes 20 ist mit einem Interferenzfilter 30 beschichtet, das für rotes Licht eine hohe Transmision besitzt und für Licht anderer Spektralbereiche nahezu undurchlässig ist. Die Schichtdicke des Interferenzfilters 30 variiert lokal in Abhängigkeit des Einfallswinkels des von der Glühwendel emittierten und auf das Interferenzfilter 30 auftreffenden Lichts. An der Kuppe des Lampengefäßes 20 besitzt das Interferenzfilter 30 die geringste Schichtdicke und in Sockelnähe die größte Schichtdicke. Die Schichtdicke des Interferenzfilters 30 nimmt stetig von der Kuppe zum Sockel zu. Der Unterschied zwischen der geringsten und der größten Schichtdicke beträgt ungefähr 7 Prozent. Entlang konzentrischer Ringe um die Lampenachse A-A ist die Schichtdicke des Interferenzfilters 30 konstant. Das Interferenzfilter 30 besteht aus insgesamt 28 Schichten, die in fünf Stapeln 31-35 angeordnet sind.In the preferred embodiment of the invention is an incandescent lamp with an electrical power consumption of about 25 W, which can be used for example as a light source in the taillight to produce the tail light or brake light. This incandescent lamp has a bayonet-
Der erste Stapel 31, der unmittelbar auf dem Lampengefäß 20 angebracht ist, besteht aus einer ersten Absorberschicht aus Fe2O3 mit einer physikalischen Schichtdicke von ca. 8 nm und einer zweiten Absorberschicht aus Fe2O3 mit einer physikalischen Schichtdicke von ca. 14 nm sowie einer zwischen den beiden Absorberschichten angeordneten, optisch niedrigbrechenden Zwischenschicht aus SiO2 mit einer physikalischen Schichtdicke von ungefähr 87 nm. In
Der zweite Stapel 32 wird von einer einmal wiederholten Schichtenfolge gebildet, die aus einer optisch hochbrechenden Schicht aus TiO2 mit einer physikalischen Schichtdicke von ungefähr 12 nm, einer optisch niedrigbrechenden Schicht aus SiO2 mit einer physikalischen Schichtdicke von ca. 40 nm und einer optisch hochbrechenden Schicht aus TiO2 mit einer physikalischen Schichtdicke von 25 nm besteht. Der zweite Stapel 32 ist optional. Er bringt eine zusätzliche Reduktion der Transmission des Interferenzfilters 30 im violetten Spektralbereich. Sein Transmissionsverhalten ist in
Der dritte Stapel 33 wird von einer zweimal wiederholten Schichtenfolge gebildet, die aus einer optisch hochbrechenden Schicht aus TiO2 mit einer physikalischen Schichtdicke von ca. 14 nm, einer optisch niedrigbrechenden Schicht aus SiO2 mit einer physikalischen Schichtdicke von 77 nm und einer optisch hochbrechenden Schicht aus TiO2 mit einer physikalischen Schichtdicke von ca. 14 nm besteht. Dieser dritte Stapel 33 besitzt eine geringe Transmission für Licht aus dem violetten und blauen Spektralbereich und eine hohe Transmission für Licht aus dem roten Spetralbereich. Er dient neben dem Absorptionsfilter zur weiteren Unterdrückung von violettem und blauem Licht. In
Der vierte Stapel 34 wird von einer zweimal wiederholten Schichtenfolge gebildet, die aus einer optisch hochbrechenden Schicht aus TiO2 mit einer physikalischen Schichtdicke von ungefähr 24 nm, einer optisch niedrigbrechenden Schicht aus SiO2 mit einer physikalischen Schichtdicke von 79 nm und einer optisch hochbrechenden Schicht aus TiO2 mit einer physikalischen Schichtdicke von 24 nm besteht. Die Kurve 3 der
Der fünfte Stapel 35 wird von einer dreimal wiederholten Schichtenfolge gebildet, die aus einer optisch hochbrechenden Schicht aus TiO2 mit einer physikalischen Schichtdicke von ca. 25 nm, einer optisch niedrigbrechenden Schicht aus SiO2 mit einer physikalischen Schichtdicke von 86 nm und einer optisch hochbrechenden Schicht aus TiO2 mit einer physikalischen Schichtdicke von 24 nm besteht. Die Kurve 4 der
Der vierte 34 und fünfte Stapel 35 dienen zur Einstellung der Kante des Interferenzfilters 30 bei ungefähr 590 nm. Die Schichtdicken der SiO2- und TiO2-Schichten dieser beiden Stapel sind derart optimiert, daß das Interferenzfilter 30 bei einer Lichtwellenlänge von ca. 590 nm einen steilen Übergang von dem kurzwelligen Spektralbereich geringer Transmission zu dem langwelligen Spektralbereich hoher Transmission besitzt. In
Claims (5)
- Incandescent lamp having a transparent, essentially rotationally symmetrical lamp vessel (20), an incandescent filament surrounded by the lamp vessel (20), and an interference filter (30) which is arranged on the lamp vessel (20) and designed as an edge filter,- the interference filter (30) having layers of low optical refraction and high optical refraction for setting the edge of the interference filter (30) in the red spectral region,- the layer thicknesses of the layers of low optical refraction and high optical refraction differing locally as a function of the angle of incidence of the light emitted by the incandescent filament and impinging on the interference filter, and- the interference filter (30) having absorber layers for absorbing blue and violet light,
characterized in that the interference filter has at least two of these absorber layers with, in each case, an intermediate layer of low optical refraction arranged therebetween, and additional layers of low optical refraction and high optical refraction for further suppressing light from the violet and blue spectral regions. - Incandescent lamp according to Claim 1, characterized in that the interference filter comprises at least four stacks (31, 33, 34, 35) of layers,- the first stack (31), which is arranged directly on the lamp vessel (20), including the at least two absorber layers with the intermediate layer of low optical refraction arranged therebetween,- at least one of the subsequent stacks (33) including the additional layers of low optical refraction and high optical refraction, the layer thicknesses thereof being optimized in such a way that this at least one stack (33) has a low transmission for light from the violet and blue spectral regions and a high transmission for light from the red spectral region, and- the other stacks (34, 35) including the layers of low optical refraction and high optical refraction for setting the edge of the interference filter (30) in the red spectral region, the layer thicknesses of the layers of low optical refraction and high optical refraction in these stacks (34, 35) being optimized in such a way that the edge of the interference filter (30) is situated in the wavelength region from 580 nm to 600 nm.
- Incandescent lamp according to Claim 1 or 2, characterized in that the at least two absorber layers consist of iron oxide, and the layer thicknesses of the at least two absorber layers are optimized such that the absorber layers have metallic properties in the violet and blue spectral regions and dielectric properties in the red spectral region, and with the layer thickness of the respective intermediate layer being optimized in such a way and being tuned to the layer thicknesses of the at least two absorber layers in such a way that the respective intermediate layer and the at least two absorber layers have a high transmission in the red spectral region.
- Automobile lamp having an incandescent lamp according to Claim 1, 2 or 3.
- Use of an incandescent lamp according to Claim 1, 2 or 3 as a tail light or stop light lamp.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10023936A DE10023936C2 (en) | 2000-05-17 | 2000-05-17 | Incandescent lamp, vehicle lamp with an incandescent lamp and use of an incandescent lamp |
| DE10023936 | 2000-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1156514A1 EP1156514A1 (en) | 2001-11-21 |
| EP1156514B1 true EP1156514B1 (en) | 2010-12-22 |
Family
ID=7642235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01108874A Expired - Lifetime EP1156514B1 (en) | 2000-05-17 | 2001-04-09 | Incandescent lamp |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6661164B2 (en) |
| EP (1) | EP1156514B1 (en) |
| AT (1) | ATE492903T1 (en) |
| BR (1) | BR0102002A (en) |
| CA (1) | CA2347603A1 (en) |
| DE (2) | DE10023936C2 (en) |
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| DE19941531A1 (en) * | 1999-09-01 | 2001-03-08 | Philips Corp Intellectual Pty | Colored signal light with iron oxide pigment coated lamp |
| WO2003046946A1 (en) * | 2001-11-29 | 2003-06-05 | Matsushita Electric Industrial Co., Ltd. | Electrodeless fluorescent lamp |
| KR100964213B1 (en) * | 2002-02-22 | 2010-06-17 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 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 (en) * | 2003-03-17 | 2006-11-02 | Schollglas Holding- und Geschäftsführungsgesellschaft mbH | Shower cabin with bricked and / or transparent shower partitions |
| EP1482533A3 (en) | 2003-05-07 | 2007-10-31 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Lamp for generating coloured light |
| US20070075616A1 (en) * | 2003-11-25 | 2007-04-05 | Koninklijke Philips Electronics N.V. | Electric lamp |
| EP1782453B1 (en) * | 2004-08-20 | 2007-12-26 | Koninklijke Philips Electronics N.V. | Electric lamp comprising a light absorbing medium |
| DE102004055081A1 (en) * | 2004-11-15 | 2006-05-18 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Incandescent lamp with absorption and interference filter |
| DE102005005754A1 (en) * | 2005-02-07 | 2006-08-17 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | NIR light bulb |
| ES2289957B1 (en) * | 2007-02-07 | 2008-12-01 | Universidad Complutense De Madrid | LIGHTING SOURCE WITH REDUCED ISSUANCE OF SHORT WAVE LENGTHS FOR EYE PROTECTION. |
| DE102007009013A1 (en) | 2007-02-23 | 2008-08-28 | Osram Gesellschaft mit beschränkter Haftung | Reflector has retroreflector and filter unit upstream of retroreflector, which is permeable to light within certain wavelength area and is non-permeable to light of other wavelength area |
| WO2009156899A1 (en) * | 2008-06-23 | 2009-12-30 | Koninklijke Philips Electronics N.V. | Multilayer filter for lamps. |
| DE102009053822A1 (en) * | 2009-11-18 | 2011-05-19 | Osram Gesellschaft mit beschränkter Haftung | Temperature radiator with selective spectral filtering |
| US8016468B2 (en) * | 2009-11-25 | 2011-09-13 | Osram Sylvania Inc. | Signal indicator lamp assembly for a vehicle |
| IN2014MU03621A (en) * | 2013-11-18 | 2015-10-09 | Jds Uniphase Corp | |
| DE102016109519A1 (en) | 2016-05-24 | 2017-11-30 | Osram Gmbh | Covering part for a greenhouse, greenhouse and use of a layer for a roofing part |
| WO2020038884A1 (en) * | 2018-08-23 | 2020-02-27 | HELLA GmbH & Co. KGaA | Filter means for a component of a motor vehicle and lamp comprising such filter means |
| CN110454715B (en) * | 2019-08-20 | 2024-08-13 | 佛山科学技术学院 | Lamp capable of adjusting refraction light |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8500367A (en) * | 1985-02-11 | 1986-09-01 | Philips Nv | COLORED HALOGEN LIGHT BULB. |
| US5200855A (en) * | 1991-07-12 | 1993-04-06 | Optical Coating Laboratory, Inc. | Absorbing dichroic filters |
| DE69312017T2 (en) * | 1992-11-06 | 1997-12-04 | Toshiba Kawasaki Kk | Anti-reflective layer and display device with this layer |
| 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 |
| DE19841304A1 (en) * | 1998-09-10 | 2000-03-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Light bulb |
-
2000
- 2000-05-17 DE DE10023936A patent/DE10023936C2/en not_active Expired - Fee Related
-
2001
- 2001-04-09 AT AT01108874T patent/ATE492903T1/en active
- 2001-04-09 DE DE50115746T patent/DE50115746D1/en not_active Expired - Lifetime
- 2001-04-09 EP EP01108874A patent/EP1156514B1/en 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/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DE10023936A1 (en) | 2001-11-29 |
| CA2347603A1 (en) | 2001-11-17 |
| US6661164B2 (en) | 2003-12-09 |
| DE10023936C2 (en) | 2002-06-06 |
| US20010043033A1 (en) | 2001-11-22 |
| EP1156514A1 (en) | 2001-11-21 |
| ATE492903T1 (en) | 2011-01-15 |
| BR0102002A (en) | 2001-12-26 |
| DE50115746D1 (en) | 2011-02-03 |
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