DE102005043594A1 - Headlight for vehicle, has LED light sources, where luminous flux produced by light sources produces set of periodical and temporally shifted partial light distributions with frequency that lies above threshold frequency for human eye - Google Patents
Headlight for vehicle, has LED light sources, where luminous flux produced by light sources produces set of periodical and temporally shifted partial light distributions with frequency that lies above threshold frequency for human eye Download PDFInfo
- Publication number
- DE102005043594A1 DE102005043594A1 DE102005043594A DE102005043594A DE102005043594A1 DE 102005043594 A1 DE102005043594 A1 DE 102005043594A1 DE 102005043594 A DE102005043594 A DE 102005043594A DE 102005043594 A DE102005043594 A DE 102005043594A DE 102005043594 A1 DE102005043594 A1 DE 102005043594A1
- Authority
- DE
- Germany
- Prior art keywords
- light sources
- led light
- frequency
- optical device
- guide unit
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
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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
- 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]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
-
- 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
- F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
-
- 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
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
Description
Die Erfindung betrifft einen Scheinwerfer für Fahrzeuge mit einer Mehrzahl von zeilenweise auf einem gemeinsamen Träger angeordneten LED-Lichtquellen, denen eine gemeinsame Lichtführungseinheit zugeordnet ist zur Erzeugung einer vorgegebenen Lichtverteilung.The The invention relates to a headlamp for vehicles having a plurality LED light sources arranged line by line on a common carrier, which a common light guide unit is assigned to generate a predetermined light distribution.
Aus
der
Aus
der
Aus
der
Aufgabe der vorliegenden Erfindung ist es daher, einen Scheinwerfer für Fahrzeuge derart weiterzubilden, dass mit einer möglichst geringen Anzahl von LED-Lichtquellen unter Bildung eines möglichst hohen Wirkungsgrades mindestens eine Lichtverteilung erzeugt wird.task The present invention is therefore a headlamp for vehicles educate such that with the least possible number of LED light sources with the highest possible efficiency at least one light distribution is generated.
Zur Lösung dieser Aufgabe ist die Erfindung in Verbindung mit dem Oberbegriff des Patentanspruchs 1 dadurch gekennzeichnet, dass die LED-Lichtquellen und/oder die Lichtführungseinheit von einer Steuereinheit ansteuerbar sind, derart, dass die LED-Lichtquellen periodisch mit einer solchen Ansteuerfrequenz ein- und ausgeschaltet werden und/oder die Lichtführungseinheit periodisch mit einer solchen Ansteuerfrequenz bewegt wird, dass der erzeugte Lichtstrom eine Mehrzahl von zeitlich versetzten und periodisch mit einer Frequenz, die oberhalb der Schwellenfrequenz für das menschliche Auge liegt, auftretenden Teillichtverteilungen bewirkt, die im zeitlichen Mittel die vorgegebene Lichtverteilung repräsentieren.to solution This object is the invention in conjunction with the preamble of claim 1, characterized in that the LED light sources and / or the light guide unit of A control unit can be controlled, such that the LED light sources periodically switched on and off with such a drive frequency be and / or the light guide unit is moved periodically with such a drive frequency that the generated luminous flux a plurality of staggered and periodically with a frequency above the threshold frequency to the human eye lies, occurring partial light distributions causes, in the temporal Means represent the predetermined light distribution.
Der besondere Vorteil der Erfindung besteht darin, dass der gesamte Lichtstrom der LED-Lichtquellen zu einer variablen Verteilung des Lichtstromes genutzt werden kann, wobei durch Ansteuerung einer Anzahl von LED-Lichtquellen und/oder der Lichtführungseinheit zeitlich versetzt und in periodischer Folge unterschiedliche Teillichtverteilungen erzeugbar sind, aus denen sich über die Zeit die vorgegebene Lichtverteilung zusammensetzt. Grundgedanke der Erfindung ist es, möglichst den gesamten vorhandenen Lichtstrom der LED-Lichtquellen zur Bildung von unterschiedlichen und mit hoher Frequenz modulierten Teillichtverteilungen zu nutzen, die durch Überlagerung die vorgegebene Lichtverteilung bilden. Vorteilhaft können hierdurch variabel verschiedene Lichtverteilungen, beispielsweise Abblendlicht-, Fernlicht-, Autobahnlichtverteilungen oder dergleichen, erzeugt werden. Vorteilhaft wird der von den LED-Lichtquellen emittierte Lichtstrom situationsabhängig räumlich variabel verteilt.Of the particular advantage of the invention is that the entire Luminous flux of the LED light sources to a variable distribution of Luminous flux can be used, whereby by controlling a Number of LED light sources and / or the light guide unit offset in time and in periodic sequence different partial light distributions are producible, which make up about the time the given light distribution is composed. basic idea The invention is as possible the entire existing luminous flux of the LED light sources for formation of different and high frequency modulated partial light distributions to exploit that by overlaying form the predetermined light distribution. This can advantageously variably different light distributions, for example dipped beam, High beam, highway light distributions or the like generated become. Advantageously, the emitted from the LED light sources Luminous flux depending on the situation spatial distributed variably.
Nach der Erfindung kann die Phase der vorzugsweise mit der Ansteuerfrequenz gepulst angesteuerten LED-Lichtquellen zu der Phase der periodischen Bewegung der Lichtführungseinheit variiert werden, wobei die Phasenverschiebung gesteuert erfolgt zur Bildung einer dynamischen Veränderung der Lichtverteilung. Um die vorgegebene Lichtverteilung zu erhalten, erfolgt eine geeignete Synchronisierung zwischen der gepulsten Strahlung der LED-Lichtquellen einerseits und der Bewegung der Lichtführungseinheit andererseits.To of the invention, the phase of preferably with the drive frequency pulsed driven LED light sources to the phase of the periodic Movement of the light guide unit be varied, the phase shift is controlled to form a dynamic change in light distribution. In order to obtain the predetermined light distribution, a suitable Synchronization between the pulsed radiation of the LED light sources on the one hand and the movement of the light guide unit on the other.
Nach einer bevorzugten Ausführungsform der Erfindung werden eine Anzahl von LED-Lichtquellen und/oder die Lichtführungseinheit periodisch angesteuert. Hierdurch können in relativ kurzer zeitlicher Folge unterschiedliche Teillichtverteilungen erzeugt werden, die im zeitlichen Mittel sich zu einer vorgegebenen Lichtverteilung überlagern. Die Ansteuerfrequenz liegt oberhalb einer Schwellenfrequenz, die durch die Flimmerverschmelzungsfrequenz repräsentiert wird. Hierdurch ist gewährleistet, dass das menschliche Auge im Mittel aufgrund seiner Trägheit und des Talbot'schen Gesetzes im zeitlichen Mittel die resultierende und gewünschte Lichtverteilung, jedoch nicht die Teillichtverteilungen wahrnimmt.According to a preferred embodiment of the invention, a number of LED light sources and / or the light guide unit periodically controlled. As a result, different partial light distributions can be generated in a relatively short time sequence, which overlap in time average to a predetermined light distribution. The drive frequency is above a threshold frequency represented by the flicker merge frequency. This ensures that the human eye perceives on average, due to its inertia and the Talbot's law, the resulting and desired light distribution, but not the partial light distributions.
Nach einer Weiterbildung der Erfindung kann die Lichtführungseinheit eine bewegliche Optikeinheit umfassen, die als rotierender Reflektor oder rotierender Spiegel ausgebildet sein kann und die mit der vorgewählten Ansteuerfrequenz rotiert.To a development of the invention, the light guide unit comprise a movable optical unit, as a rotating reflector or rotating mirror can be formed and with the preselected drive frequency rotates.
Nach einer bevorzugten Ausführungsform der Erfindung weist die Lichtführungseinheit zusätzlich stationäre Optikeinrichtungen auf, so dass das von den LED-Lichtquellen emit tierte Licht zur Bildung eines Zwischenbildes in Verbindung mit der beweglichen Optikeinrichtung abgebildet wird. Vorzugsweise wird das Licht von einzelnen, in einer Zeile angeordneten LED-Lichtquellen in Spalten, also unter senkrechter Anordnung zur Zeile, abgebildet.To a preferred embodiment of Invention has the light guide unit additionally stationary Optics on, so that of the LED light sources emit oriented Light for forming an intermediate image in conjunction with the movable Optics device is mapped. Preferably, the light is from individual LED light sources arranged in a row in columns, So under vertical arrangement to the line, shown.
Weitere Vorteile der Erfindung ergeben sich aus den weiteren Unteransprüchen.Further Advantages of the invention will become apparent from the other dependent claims.
Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert.embodiments The invention will be explained in more detail with reference to the drawings.
Es zeigen:It demonstrate:
Ein
Scheinwerfer
Die
LED-Lichtquellen
Die
Lichtführungseinheit
Die
erste stationäre
Optikeinrichtung
Die
Drehachse des Polygonspiegels
Die
LED-Lichtquellen
Die
Steuereinheit weist ferner Mittel auf, so dass die LED-Lichtquellen
Die
Steuereinheit weist ferner Mittel auf, so dass die bewegliche Optikeinrichtung
Der
Polygonspiegel
Wie
besser aus
Die
LED-Lichtquellen
Alternativ
können
die LED-Lichtquellen
Wie
aus den
Nach
einer weiteren nicht dargestellten Ausführungsform kann die bewegliche
Optikeinrichtung
Die
bewegliche Optikeinrichtung
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005043594A DE102005043594A1 (en) | 2005-09-12 | 2005-09-12 | Headlight for vehicle, has LED light sources, where luminous flux produced by light sources produces set of periodical and temporally shifted partial light distributions with frequency that lies above threshold frequency for human eye |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005043594A DE102005043594A1 (en) | 2005-09-12 | 2005-09-12 | Headlight for vehicle, has LED light sources, where luminous flux produced by light sources produces set of periodical and temporally shifted partial light distributions with frequency that lies above threshold frequency for human eye |
Publications (1)
Publication Number | Publication Date |
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DE102005043594A1 true DE102005043594A1 (en) | 2007-03-15 |
Family
ID=37763128
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DE102005043594A Withdrawn DE102005043594A1 (en) | 2005-09-12 | 2005-09-12 | Headlight for vehicle, has LED light sources, where luminous flux produced by light sources produces set of periodical and temporally shifted partial light distributions with frequency that lies above threshold frequency for human eye |
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Cited By (11)
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---|---|---|---|---|
DE102011006699A1 (en) * | 2011-04-04 | 2012-10-04 | Osram Ag | Lighting device and method for operating a lighting device |
DE102012016788A1 (en) * | 2012-08-23 | 2014-02-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Polygon type laser scanner used in material processing field, has deflecting mirror whose mirror surface is three-dimensionally shaped such that laser beam is periodically guided along single or multiple curved scanning paths |
CN104344308A (en) * | 2013-07-30 | 2015-02-11 | 法雷奥照明公司 | Lighting system with improved scanning means |
EP2988060A4 (en) * | 2013-04-15 | 2016-11-30 | Koito Mfg Co Ltd | Lamp for a vehicle |
WO2017055077A1 (en) * | 2015-09-28 | 2017-04-06 | Hella Kgaa Hueck & Co. | Illumination device for vehicles and method for producing a predetermined light function |
DE102009025678B4 (en) * | 2008-06-24 | 2017-08-31 | Koito Manufacturing Co., Ltd. | Lighting device for a vehicle |
EP3194838B1 (en) * | 2014-09-19 | 2019-06-19 | Automotive Lighting Reutlingen GmbH | Headlamp with a light deflecting element |
DE102018112793A1 (en) * | 2018-05-29 | 2019-12-05 | Automotive Lighting Reutlingen Gmbh | Motor vehicle headlight with a micro-projector having light module and a movable mirror |
US10540556B2 (en) | 2010-04-13 | 2020-01-21 | Koito Manufacturing Co., Ltd. | Optical unit, vehicle monitor, and obstruction detector |
DE102019112630A1 (en) * | 2019-05-14 | 2020-11-19 | OSRAM CONTINENTAL GmbH | Optical device, vehicle, headlight and method |
DE102021210798A1 (en) | 2021-09-28 | 2023-03-30 | Volkswagen Aktiengesellschaft | Beam deflection device for a laser device of a motor vehicle, and laser device |
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DE102004032095A1 (en) * | 2004-07-01 | 2006-02-16 | Hella Kgaa Hueck & Co. | Motor vehicle headlight has electronically movable macro mirror surface and gives a combination of both static and dynamic light distributions |
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DE10205779A1 (en) * | 2002-02-13 | 2003-10-02 | Bayerische Motoren Werke Ag | Headlamp for vehicle, has light sources that can be switched on and off individually and/or in groups, adjustable light distribution, at least some sources with shade to give dipped beam effect |
DE10261183B3 (en) * | 2002-12-20 | 2004-06-03 | Daimlerchrysler Ag | Automobile headlamp using LED module with asymmetric LED chip array for providing headlamp beam with asymmetric light distribution |
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Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009025678B4 (en) * | 2008-06-24 | 2017-08-31 | Koito Manufacturing Co., Ltd. | Lighting device for a vehicle |
US10748015B2 (en) | 2010-04-13 | 2020-08-18 | Koito Manufacturing Co., Ltd. | Optical unit, vehicle monitor, and obstruction detector |
EP2559935B1 (en) * | 2010-04-13 | 2020-07-01 | Koito Manufacturing Co., Ltd. | Optical unit |
US11262041B2 (en) | 2010-04-13 | 2022-03-01 | Koito Manufacturing Co., Ltd. | Optical unit, vehicle monitor, and obstruction detector |
US10540556B2 (en) | 2010-04-13 | 2020-01-21 | Koito Manufacturing Co., Ltd. | Optical unit, vehicle monitor, and obstruction detector |
DE102011006699B4 (en) * | 2011-04-04 | 2021-05-27 | Osram Gmbh | Lighting device |
CN103429953A (en) * | 2011-04-04 | 2013-12-04 | 欧司朗有限公司 | Lighting device and method for operating lighting device |
US9103509B2 (en) | 2011-04-04 | 2015-08-11 | Osram Gmbh | Lighting device and method for operating a lighting device |
DE102011006699A1 (en) * | 2011-04-04 | 2012-10-04 | Osram Ag | Lighting device and method for operating a lighting device |
DE102012016788A1 (en) * | 2012-08-23 | 2014-02-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Polygon type laser scanner used in material processing field, has deflecting mirror whose mirror surface is three-dimensionally shaped such that laser beam is periodically guided along single or multiple curved scanning paths |
EP2988060A4 (en) * | 2013-04-15 | 2016-11-30 | Koito Mfg Co Ltd | Lamp for a vehicle |
CN104344308A (en) * | 2013-07-30 | 2015-02-11 | 法雷奥照明公司 | Lighting system with improved scanning means |
CN104344308B (en) * | 2013-07-30 | 2018-11-20 | 法雷奥照明公司 | Lighting system with improved scanning means |
EP2833054A3 (en) * | 2013-07-30 | 2016-02-17 | Valeo Vision | Lighting system with improved scanning means |
EP3194838B1 (en) * | 2014-09-19 | 2019-06-19 | Automotive Lighting Reutlingen GmbH | Headlamp with a light deflecting element |
WO2017055077A1 (en) * | 2015-09-28 | 2017-04-06 | Hella Kgaa Hueck & Co. | Illumination device for vehicles and method for producing a predetermined light function |
DE102015116360B4 (en) | 2015-09-28 | 2023-12-28 | HELLA GmbH & Co. KGaA | Lighting device for vehicles and method for generating a predetermined lighting function |
DE102018112793A1 (en) * | 2018-05-29 | 2019-12-05 | Automotive Lighting Reutlingen Gmbh | Motor vehicle headlight with a micro-projector having light module and a movable mirror |
DE102018112793B4 (en) | 2018-05-29 | 2023-10-19 | Automotive Lighting Reutlingen Gmbh | Motor vehicle headlight with a light module having microprojectors and a movable mirror |
DE102019112630A1 (en) * | 2019-05-14 | 2020-11-19 | OSRAM CONTINENTAL GmbH | Optical device, vehicle, headlight and method |
DE102021210798A1 (en) | 2021-09-28 | 2023-03-30 | Volkswagen Aktiengesellschaft | Beam deflection device for a laser device of a motor vehicle, and laser device |
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Effective date: 20110401 |