DE102013000692A1 - Lighting device, particularly headlight module for motor vehicle, has luminophore element and two excitation sources for exciting light emission of luminophore element, where excitation sources have different emission spectra - Google Patents
Lighting device, particularly headlight module for motor vehicle, has luminophore element and two excitation sources for exciting light emission of luminophore element, where excitation sources have different emission spectra Download PDFInfo
- Publication number
- DE102013000692A1 DE102013000692A1 DE201310000692 DE102013000692A DE102013000692A1 DE 102013000692 A1 DE102013000692 A1 DE 102013000692A1 DE 201310000692 DE201310000692 DE 201310000692 DE 102013000692 A DE102013000692 A DE 102013000692A DE 102013000692 A1 DE102013000692 A1 DE 102013000692A1
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- Germany
- Prior art keywords
- excitation sources
- lighting device
- light
- phosphor element
- luminophore
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/251—Light guides the light guides being used to transmit light from remote light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/13—Ultraviolet light; Infrared light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/16—Laser light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/18—Combination of light sources of different types or shapes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Die Erfindung betrifft eine Beleuchtungseinrichtung für einen Kraftwagen nach dem Oberbegriff von Patentanspruch 1 sowie ein Verfahren zu deren Betrieb.The invention relates to a lighting device for a motor vehicle according to the preamble of patent claim 1 and a method for its operation.
Aufgrund der Energieeffizienz und hohen Lichtausbeute finden in Kraftwagen zunehmend LED-Beleuchtungen Anwendung. Um mittels einer LED weißes Licht bereitzustellen, wird üblicherweise ein Leuchtstoff durch die LED angeregt, der dann wiederum Licht im gewünschten Spektralbereich aussendet.Due to the energy efficiency and high light output, LED cars are increasingly being used in motor vehicles. To provide white light by means of an LED, a phosphor is usually excited by the LED, which in turn emits light in the desired spectral range.
Aus der
Nachteilig bei bekannten Beleuchtungseinrichtungen dieser Art ist es, dass in der Regel die Leuchtdichte der Einrichtung begrenzt ist, da die Sättigung des Leuchtstoffes kaum erreicht wird.A disadvantage of known lighting devices of this type is that usually the luminance of the device is limited, since the saturation of the phosphor is hardly reached.
Es ist daher Aufgabe der vorliegenden Erfindung, eine Beleuchtungseinrichtung nach dem Oberbegriff von Patentanspruch 1 sowie ein Verfahren zu deren Betrieb bereitzustellen, welche eine besonders hohe Leuchtdichte ermöglichen.It is therefore an object of the present invention to provide a lighting device according to the preamble of patent claim 1 and a method for their operation, which allow a particularly high luminance.
Diese Aufgabe wird durch eine Beleuchtungseinrichtung mit den Merkmalen des Patentanspruchs 1 sowie durch ein Verfahren mit den Merkmalen des Patentanspruchs 6 gelöst.This object is achieved by a lighting device having the features of patent claim 1 and by a method having the features of patent claim 6.
Eine solche Beleuchtungseinrichtung für einen Kraftwagen, insbesondere ein Scheinwerfermodul, umfasst ein Leuchtstoffelement und zumindest zwei Anregungsquellen zum Anregen einer Lichtemission des Leuchtstoffelements.Such a lighting device for a motor vehicle, in particular a headlight module, comprises a phosphor element and at least two excitation sources for exciting a light emission of the phosphor element.
Erfindungsgemäß ist dabei vorgesehen, dass die zumindest zwei Anregungsquellen aus unterschiedlichen Richtungen, insbesondere von entgegengesetzten Seiten, auf das Leuchtstoffelement gerichtet sind.According to the invention, it is provided that the at least two excitation sources are directed from different directions, in particular from opposite sides, to the phosphor element.
Durch die Anregung des Leuchtstoffelements mit mehreren Lichtquellen aus unterschiedlichen Richtungen kann besonders einfach eine Sättigung des Leuchtstoffs erzielt werden, so dass eine besonders hohe Lichtausbeute erreicht wird.By exciting the phosphor element with a plurality of light sources from different directions, saturation of the phosphor can be achieved in a particularly simple manner, so that a particularly high luminous efficacy is achieved.
In weiterer Ausgestaltung der Erfindung weisen die zumindest zwei Anregungsquellen unterschiedliche Emissionsspektren auf. Auch dies verbessert die Lichtausbeute, da so unterschiedliche Übergänge des Leuchtstoffs angeregt werden können. Gleichzeitig ist es möglich, durch das Intensitätsverhältnis der Anregungsquellen Einfluss auf das Emissionsspektrum des Leuchtstoffs zu nehmen, so dass Farbe und/oder Farbtemperatur der Beleuchtungseinrichtung eingestellt werden können.In a further embodiment of the invention, the at least two excitation sources have different emission spectra. This also improves the luminous efficacy, since so different transitions of the phosphor can be excited. At the same time, it is possible to influence the emission spectrum of the phosphor by the intensity ratio of the excitation sources so that the color and / or color temperature of the illumination device can be adjusted.
Es ist ferner zweckmäßig, wenn das Leuchtstoffelement mit einer der Anregungsquellen und/oder einem Kühlelement in ein Bauteil integriert ist. Dies erlaubt eine besonders kompakte und bauraumsparende Gestaltung des Beleuchtungselements. Besonders vorteilhaft ist es dabei, wenn das Leuchtstoffelement und die eine Anregungsquelle in Form einer Leuchtdiode vorliegen.It is also expedient if the phosphor element is integrated with one of the excitation sources and / or a cooling element in a component. This allows a particularly compact and space-saving design of the lighting element. It is particularly advantageous if the phosphor element and the one excitation source are in the form of a light-emitting diode.
Die Erfindung betrifft ferner ein Verfahren zum Betreiben einer Beleuchtungseinrichtung der oben beschriebenen Art, bei welchem durch Einstellen eines Intensitätsverhältnisses der Anregungsquellen eine Farbtemperatur und/oder Farbe des von dem Leuchtstoffelement emittierten Lichts eingestellt wird. Damit kann die optische Anmutung des Fahrzeugs bedarfsgerecht eingestellt und zudem in Abhängigkeit vom Umgebungslicht gegebenenfalls die Sichtbarkeit verbessert werden. Es ist ferner möglich, durch Farbwechsel mehrere Funktionen in eine einzige Leuchte zu integrieren.The invention further relates to a method for operating a lighting device of the type described above, wherein by adjusting an intensity ratio of the excitation sources, a color temperature and / or color of the light emitted by the phosphor element is adjusted. Thus, the visual appearance of the vehicle can be adjusted as needed and also depending on the ambient light, if necessary, the visibility can be improved. It is also possible to integrate several functions in a single lamp by color change.
Es ist dabei vorteilhaft, wenn die Anregungsquellen zumindest zeitweise zeitgleich betrieben werden. Hierdurch kann eine Sättigung des Leuchtstoffs und eine damit einhergehende hohe Lichtausbeute bei gleichzeitiger Verschiebung des Emissionsspektrums zu höherem Blauanteil erreicht werden.It is advantageous if the excitation sources are operated at least temporarily at the same time. As a result, a saturation of the phosphor and a concomitant high light output with simultaneous shift of the emission spectrum can be achieved to a higher blue content.
Es ist dabei ferner vorteilhaft, wenn die Anregungsquellen mittels Pulsweitenmodulation angesteuert werden. Hiermit kann auf einfache Weise eine besonders präzise Steuerung realisiert werden.It is also advantageous if the excitation sources are controlled by means of pulse width modulation. This can be realized in a simple manner, a particularly precise control.
Im Folgenden werden die Erfindung und ihre Ausführungsformen anhand der Zeichnung näher erläutert. Es zeigen:In the following the invention and its embodiments will be explained in more detail with reference to the drawing. Show it:
Eine im Ganzen mit
In
In einer weiteren Ausführungsform wird mittels eines Lichtleiters
In
Anstelle eines Lichtleiters
Um eine Variation des abgegebenen Farbspektrums zu erlauben, können, wie in
Wenn die Leuchtdiode
Besonders einfach kann dies realisiert werden, wenn die beiden Lichtquellen mit Pulsweitenmodulation angesteuert werden. Durch die Änderung des Taktverhältnisses in der Ansteuerung der beiden Lichtquellen kann dann die resultierende Farbe der Beleuchtungseinrichtung
Bei entsprechender Wahl der PWM-Taktung können beide Lichtquellen auch gleichzeitig aktiv sein, wie im Bereich
Um die Gestaltungsmöglichkeiten bei der Einstellung des Emissionsspektrums weiter zu vergrößern, kann die zweite Lichtquelle mehrere Wellenlängen aufweisen. Hierfür kann beispielsweise ein abstimmbarer Laser verwendet werden. Es ist ebenso möglich, mehrere Lichtquellen mit unterschiedlichen Emissionsspektren gleichzeitig in den Lichtwellenleiter
In einer vereinfachten Variante kann die Leuchtdiode
Es ist ferner auch möglich, für beide Lichtquellen das gleiche Emissionsspektrum zu wählen. In diesem Fall wird lediglich die Leuchtdichte des Leuchtstoffelements
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- Beleuchtungseinrichtunglighting device
- 1212
- Leuchtdiodeled
- 1414
- Gehäusecasing
- 1616
- UV-ChipUV chip
- 1818
- Seitepage
- 2020
- LeuchtstoffelementFluorescent element
- 2222
- Lichtwellenleiteroptical fiber
- 2424
- Seitepage
- 2626
- Reflektorreflector
- 2828
- zweite Lichtquellesecond light source
- 3030
- Pfeilarrow
- 3232
- Pfeilarrow
- 3434
- Trägercarrier
- 3636
- Pfeilarrow
- 3838
- Pfeilarrow
- 4040
- Ansteuerkurvecontrol curve
- 4242
- Ansteuerkurvecontrol curve
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102010028949 A1 [0003] DE 102010028949 A1 [0003]
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310000692 DE102013000692A1 (en) | 2013-01-16 | 2013-01-16 | Lighting device, particularly headlight module for motor vehicle, has luminophore element and two excitation sources for exciting light emission of luminophore element, where excitation sources have different emission spectra |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310000692 DE102013000692A1 (en) | 2013-01-16 | 2013-01-16 | Lighting device, particularly headlight module for motor vehicle, has luminophore element and two excitation sources for exciting light emission of luminophore element, where excitation sources have different emission spectra |
Publications (1)
Publication Number | Publication Date |
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DE102013000692A1 true DE102013000692A1 (en) | 2013-08-01 |
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DE201310000692 Withdrawn DE102013000692A1 (en) | 2013-01-16 | 2013-01-16 | Lighting device, particularly headlight module for motor vehicle, has luminophore element and two excitation sources for exciting light emission of luminophore element, where excitation sources have different emission spectra |
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DE (1) | DE102013000692A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3012573A1 (en) * | 2013-08-29 | 2015-05-01 | Valeo Vision | OPTICAL MODULE FOR A VEHICLE PROJECTOR COMPRISING A LASER SOURCE |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010028949A1 (en) | 2010-05-12 | 2011-11-17 | Osram Gesellschaft mit beschränkter Haftung | headlight module |
-
2013
- 2013-01-16 DE DE201310000692 patent/DE102013000692A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010028949A1 (en) | 2010-05-12 | 2011-11-17 | Osram Gesellschaft mit beschränkter Haftung | headlight module |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3012573A1 (en) * | 2013-08-29 | 2015-05-01 | Valeo Vision | OPTICAL MODULE FOR A VEHICLE PROJECTOR COMPRISING A LASER SOURCE |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R230 | Request for early publication | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |