EP1224419B1 - Headlight for a motor vehicle - Google Patents

Headlight for a motor vehicle Download PDF

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Publication number
EP1224419B1
EP1224419B1 EP00967834A EP00967834A EP1224419B1 EP 1224419 B1 EP1224419 B1 EP 1224419B1 EP 00967834 A EP00967834 A EP 00967834A EP 00967834 A EP00967834 A EP 00967834A EP 1224419 B1 EP1224419 B1 EP 1224419B1
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EP
European Patent Office
Prior art keywords
light
headlight
reflection
cover pane
coating
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
Application number
EP00967834A
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German (de)
French (fr)
Other versions
EP1224419A1 (en
Inventor
Michael Werner
Frank Ortmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
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Volkswagen AG
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Filing date
Publication date
Priority claimed from DE10033776A external-priority patent/DE10033776B4/en
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP1224419A1 publication Critical patent/EP1224419A1/en
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Publication of EP1224419B1 publication Critical patent/EP1224419B1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • 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
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • 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
    • F21S41/28—Cover glass
    • 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
    • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers

Definitions

  • the invention relates to a vehicle headlight with a housing having a light exit opening, a light-transmitting cover covering the light exit opening and at least one light source arranged in the housing.
  • Vehicle headlights serve road safety. With their help, the roadway is illuminated in front of the vehicle in the dark or poor visibility. In addition, oncoming vehicles are already recognizable by their switched headlights at a great distance.
  • vehicle headlights Due to the strong influence of the vehicle design on the image of a motor vehicle, vehicle headlights are also subject to greater influences on design today. Therefore, in the design and construction of headlamps for vehicles boundary conditions have to be considered, which played only a minor role in the development and construction of vehicle headlights a few years ago. Due to the free-form surface technology on modern vehicle headlamps, conventionally structured cover or diffuser lenses can be replaced by cover glass made of clear glass. However, this also implies the need to design the interior of the headlamp according to design criteria, which in turn lighting problems occur. The ever flatter outer skin of today's vehicles in the area of the headlights increases the reflected portion of the exiting luminous flux on the clear cover. The deflected light component is directed to often used high-gloss trim inside the headlight and thrown from there in ascending order over the vehicle. Under bad weather conditions this light causes a so-called self-glare of the driver.
  • cover frame at the transition from the housing of the headlamp to the cover to cover the gap formed there and thus also to improve the visual impression.
  • an insert may be provided as in the German utility model DE 298 22 704 U1 disclosed.
  • a headlamp in which the surface of the glass bulb of the light bulb and possibly also the lens is provided with a thin layer to Refexionsminderung.
  • the invention is therefore an object of the invention to provide a headlamp for motor vehicles, in which the self-glare causing light component is reduced.
  • the surface of the cover or lens which preferably faces the at least one luminous means and is preferably made of clear glass is coated with an antireflection coating, ie. provided with a reflection-reducing coating, whereby a very large percentage of the light emitted by the lamp or bulbs penetrates the cover.
  • the outer surface of the cover can be provided with an anti-reflective coating. This further reduces the proportion of the light reflected back from the cover plate into the housing interior of the vehicle headlight.
  • the surfaces within the housing which are hit by the light rays reflected by the cover plate, are provided with an antireflection coating so that at least a large percentage of these light rays pass through the surface and are not reflected.
  • This measure can be provided both alone and together with the anti-reflection of the cover.
  • the anti-reflection i.
  • the anti-reflection coating consists of a reflection-reducing multiple coating.
  • Such multiple coatings are well known for other applications.
  • means are provided behind the surface on which the light rays reflected by the cover glass impinge and which have an anti-reflection, which absorb at least a large portion of the light rays penetrating the surface.
  • the cover plate may have means which reflect the light reflected from the reflective surface (s) of the housing interior, i. the light, which impinges in a defined angle or a defined part of the cover, reflect or polarize in the interior of the housing.
  • Another basic idea of the invention is to provide the surfaces to which the light reflected from the cover glass has to be provided with means which absorb the incident light and / or the incident light directed onto the cover plate and / or into the interior of the housing reflect or polarize. This solution can be used in combination with measures for the cover.
  • These means consist of an arrangement of structural elements, in particular prisms.
  • Vehicle headlamp shown the at least one lamp 5 facing surface 3a of the translucent cover 3 provided with an anti-reflective coating.
  • Antireflective coatings which are produced by a reflection-reducing coating, are available for other applications and for a wide variety of translucent materials.
  • the outer surface 3b of the cover 3 reflects light rays back, which can then hit the reflective surface 7 of the diaphragm 8 is after Fig. 3 intended,
  • the outer surface 3b of the cover 3 to be provided with an anti-reflective coating.
  • Fig. 4 the reflective surface 7 of the trim panel 8, but at least the part of the surface 7, on which the light beams 6b reflected by the cover disk 3 impinge, is provided with a reflection-reducing coating.
  • means 8 for absorbing these light beams are then provided behind the diaphragm 8 for the light beams penetrating the diaphragm 8.

Abstract

The invention relates to a motor vehicle headlight, comprising a housing (1) with a light outlet (2), a translucent cover panel (3) which covers the light outlet (2) and at least one illumination element (5) which is located in the housing (1). According to the invention, in order to reduce the glare for the driver from light which is reflected upwards, anti-reflection coatings and/or light absorbing elements and/or polarising elements (9) are provided on the cover panel (3) and/or on the interior of the headlight.

Description

Die Erfindung betrifft einen Fahrzeugscheinwerfer mit einem Gehäuse, das eine Lichtaustrittsöffnung aufweist, einer die Lichtaustrittsöffnung abdeckenden lichtdurchlässigen Abdeckscheibe und mindestens einem in dem Gehäuse angeordneten Leuchtmittel.The invention relates to a vehicle headlight with a housing having a light exit opening, a light-transmitting cover covering the light exit opening and at least one light source arranged in the housing.

Fahrzeugscheinwerfer dienen der Verkehrssicherheit. Mit ihrer Hilfe wird bei Dunkelheit oder schlechter Sicht die Fahrbahn vor dem Kraftfahrzeug ausgeleuchtet. Darüber hinaus sind entgegenkommende Fahrzeuge durch ihre eingeschalteten Scheinwerfer bereits in großer Entfernung erkennbar.Vehicle headlights serve road safety. With their help, the roadway is illuminated in front of the vehicle in the dark or poor visibility. In addition, oncoming vehicles are already recognizable by their switched headlights at a great distance.

Wegen des starken Einflusses des Fahrzeug-Designs auf das Image eines Kraftfahrzeugs unterliegen Fahrzeugscheinwerfer heute ebenfalls stärker als bisher Einflüssen des Designs. Daher sind mittlerweile bei der Konstruktion und Gestaltung von Scheinwerfern für Fahrzeuge Randbedingungen zu berücksichtigen, die vor wenigen Jahren bei der Entwicklung und Konstruktion von Fahrzeugscheinwerfern keine oder nur eine untergeordnete Rolle gespielt haben. Aufgrund der Freiformflächentechnologie an modernen Fahrzeugscheinwerfern können herkömmlich strukturierte Abdeck- oder Streuscheiben durch Abdeckscheiben aus Klarglas ersetzt werden. Damit tritt jedoch auch die Notwendigkeit auf, das Innenleben des Scheinwerfers nach designtechnischen Kriterien zu gestalten, wodurch wiederum lichttechnische Probleme auftreten. Die immer flacher werdende Außenhaut der heutigen Fahrzeuge im Bereich der Scheinwerfer erhöht den reflektierten Anteil des austretenden Lichtstroms an der klaren Abdeckscheibe. Der abgelenkte Lichtanteil wird auf oftmals eingesetzte hochglänzende Zierblenden innerhalb des Scheinwerfers gelenkt und von dort aufsteigend über das Fahrzeug geworfen. Unter Schlechtwetterbedingungen verursacht dieses Licht eine sogenannte Eigenblendung des Fahrers.Due to the strong influence of the vehicle design on the image of a motor vehicle, vehicle headlights are also subject to greater influences on design today. Therefore, in the design and construction of headlamps for vehicles boundary conditions have to be considered, which played only a minor role in the development and construction of vehicle headlights a few years ago. Due to the free-form surface technology on modern vehicle headlamps, conventionally structured cover or diffuser lenses can be replaced by cover glass made of clear glass. However, this also implies the need to design the interior of the headlamp according to design criteria, which in turn lighting problems occur. The ever flatter outer skin of today's vehicles in the area of the headlights increases the reflected portion of the exiting luminous flux on the clear cover. The deflected light component is directed to often used high-gloss trim inside the headlight and thrown from there in ascending order over the vehicle. Under bad weather conditions this light causes a so-called self-glare of the driver.

Aus der deutschen Offenlegungsschrift DE 195 11 164 A1 ist beispielsweise ein Fahrzeugscheinwerfer bekannt, bei den ein montagebedingter Spalt am Reflektor des Scheinwerfers mit Hilfe eines Zusatzreflektors überbrückt wird. Dadurch entsteht beim Betrachter der Eindruck eines durchgängigen Reflektors, was den optischen Eindruck des Fahrzeugscheinwerfers verbessert.From the German patent application DE 195 11 164 A1 For example, a vehicle headlamp is known in which an assembly-related gap on the reflector of the headlamp is bridged by means of an additional reflector. This arises during the Viewers the impression of a continuous reflector, which improves the visual appearance of the vehicle headlight.

Auch ist es bekannt, Abdeckrahmen am Übergang vom Gehäuse des Scheinwerfers zur Abdeckscheibe hin anzuordnen, um den dort gebildeten Spalt abzudecken und damit ebenfalls den optischen Eindruck zu verbessern. Zusätzlich kann noch ein Einlegeteil vorgesehen sein, wie in dem deutschen Gebrauchsmuster DE 298 22 704 U1 offenbart.It is also known to arrange cover frame at the transition from the housing of the headlamp to the cover to cover the gap formed there and thus also to improve the visual impression. In addition, an insert may be provided as in the German utility model DE 298 22 704 U1 disclosed.

Aus der DE 965 428 ist ein Scheinwerfer bekannt, bei dem die Oberfläche des Glaskolbens der Glühlampe und ggf. auch der Abschlussscheibe mit einer dünnen Schicht zur Refexionsminderung versehen ist.From the DE 965 428 a headlamp is known in which the surface of the glass bulb of the light bulb and possibly also the lens is provided with a thin layer to Refexionsminderung.

Aus der US 3,631,288 ist ein Scheinwerfer mit einem Polarisator bekannt, der dafür sorgt, dass das von dem Scheinwerfer emittierte Licht linear polarisiert ist.From the US 3,631,288 is known a headlamp with a polarizer, which ensures that the light emitted by the headlight is linearly polarized.

Der Erfindung liegt demgemäß die Aufgabe zugrunde, einen Scheinwerfer für Kraftfahrzeuge zu schaffen, bei dem der die Eigenblendung verursachende Lichtanteil reduziert wird.The invention is therefore an object of the invention to provide a headlamp for motor vehicles, in which the self-glare causing light component is reduced.

Die Aufgabe wird durch die Merkmale der Patentansprüche 1 und 9 gelöst. Vorteilhafte Aus- und Weiterbildungen sind in den Unteransprüchen dargestellt.The object is solved by the features of claims 1 and 9. Advantageous embodiments and further developments are shown in the subclaims.

Gemäß einem ersten erfinderischen Grundgedanken ist die dem mindestens einem Leuchtmittel zugewandte Oberfläche der Abdeck- oder Lichtscheibe, die vorzugsweise aus Klarglas besteht, mit einer Entspiegelung, d.h. mit einer reflektionsmindernden Beschichtung versehen, wodurch ein sehr großer Prozentsatz des von dem oder den Leuchtmitteln abgegebenen Lichtes die Abdeckscheibe durchdringt.According to a first inventive concept, the surface of the cover or lens which preferably faces the at least one luminous means and is preferably made of clear glass is coated with an antireflection coating, ie. provided with a reflection-reducing coating, whereby a very large percentage of the light emitted by the lamp or bulbs penetrates the cover.

Zusätzlich, wie nach einer bevorzugten Ausführung der Erfindung vorgesehen, kann auch die äußere Oberfläche der Abdeckscheibe mit einer Entspiegelung versehen werden. Dadurch reduziert sich der Anteil des von der Abdeckscheibe in das Gehäuseinnere des Fahrzeugscheinwerfers rückreflektierte Licht weiter.In addition, as provided according to a preferred embodiment of the invention, the outer surface of the cover can be provided with an anti-reflective coating. This further reduces the proportion of the light reflected back from the cover plate into the housing interior of the vehicle headlight.

Gemäß einem Aspekt der Erfindung sind die Flächen innerhalb des Gehäuses, auf welche die von der Abdeckscheibe reflektierten Lichtstrahlen treffen, mit einer Entspiegelung versehen, so daß zumindest ein hoher Prozentsatz dieser Lichtstrahlen durch die Fläche hindurchtritt und nicht reflektiert wird.According to one aspect of the invention, the surfaces within the housing, which are hit by the light rays reflected by the cover plate, are provided with an antireflection coating so that at least a large percentage of these light rays pass through the surface and are not reflected.

Diese Maßnahme kann sowohl alleinig als auch gemeinsam mit der Entspiegelung der Abdeckscheibe vorgesehen sein.This measure can be provided both alone and together with the anti-reflection of the cover.

Die Entspiegelung, d.h. die reflektionsmindernde Beschichtung sollte dabei für einen Spektralbereich zwischen λ = 425 bis 650 nm, insbesondere λ = 500 bis 625 nm, vorgesehen sein und einen spektralen Reflektionsgrad von max. R = 5%, vorzugsweise R < 1 %, aufweisen.The anti-reflection, i. The reflection-reducing coating should be provided for a spectral range between λ = 425 to 650 nm, in particular λ = 500 to 625 nm, and a spectral reflectance of max. R = 5%, preferably R <1%.

Gemäß einer bevorzugten Ausführung besteht die Entspiegelung aus einer reflektionsmindernden Mehrfachbeschichtung. Solche Mehrfachbeschichtungen sind für andere Anwendungsfälle hinreichend bekannt.According to a preferred embodiment, the anti-reflection coating consists of a reflection-reducing multiple coating. Such multiple coatings are well known for other applications.

Hinter der Fläche, auf welche die von der Abdeckscheibe reflektierten Lichtstrahlen auftreffen und die eine Entspiegelung aufweist, sind weiterhin Mittel vorgesehen, welche zumindest einen großen Anteil der die Fläche durchdringenden Lichtstrahlen absorbieren.Furthermore, means are provided behind the surface on which the light rays reflected by the cover glass impinge and which have an anti-reflection, which absorb at least a large portion of the light rays penetrating the surface.

Ferner kann die Abdeckscheibe Mittel aufweisten, die das von der reflektierenden Fläche bzw. den Flächen des Gehäuseinnenraums reflektierte Licht, d.h. das Licht, das in einem definierten Winkel bzw. einen definierten Teil der Abdeckscheibe auftrifft, in das Innere des Gehäuses reflektieren bzw. polarisieren.Furthermore, the cover plate may have means which reflect the light reflected from the reflective surface (s) of the housing interior, i. the light, which impinges in a defined angle or a defined part of the cover, reflect or polarize in the interior of the housing.

Ein anderer erfindungsgemäßer Grundgerdanke ist darin zu sehen, die Flächen, auf welche das von der Abdeckscheibe reflektierte Licht trifft, mit Mitteln zu versehen, die das auftreffende Licht absorbieren und/oder das auftreffende Licht gerichtet auf die Abdeckscheibe und/oder in das Innere des Gehäuses reflektieren bzw. polarisieren. Diese Lösung kann in Kombination mit Maßnahmen für die Abdeckscheibe eingesetzt werden.Another basic idea of the invention is to provide the surfaces to which the light reflected from the cover glass has to be provided with means which absorb the incident light and / or the incident light directed onto the cover plate and / or into the interior of the housing reflect or polarize. This solution can be used in combination with measures for the cover.

Diese Mittel bestehen aus einer Anordnung von Strukturelementen, insbesondere Prismen.These means consist of an arrangement of structural elements, in particular prisms.

Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen näher beschrieben. Die zugehörigen Zeichnungen zeigen:

Fig. 1:
einen Fahrzeugscheinwerfer nach dem Stand der Technik,
Fig. 2:
einen Fahrzeugscheinwerfer mit einer ersten Lösungsvariante,
Fig. 3:
einen Fahrzeugscheinwerfer mit einer zweiten Lösungsvariante und
Fig. 4:
einen Fahrzeugscheinwerfer mit einer dritten Lösungsvariante.
Der in Fig. 1 dargestellte Scheinwerfer eines Kraftfahrzeuges besteht aus einem Gehäuse 1, dessen Lichtaustrittsöffnung 2 durch eine lichtdurchlässige, gebogene Abdeckscheibe 3 aus Klarglas verschlossen ist. Innerhalb des Gehäuses 1 ist ein Reflektor 4 angeordnet, der die von dem Leuchtmittel 5 ausgesandten Lichtstrahlen 6 gerichtet zur Abdeckscheibe 3 reflektiert. Ein großer Teil 6a der Lichtstrahlen dringt nach außen. Ein geringerer Teil 6b der Lichtstrahlen wird jedoch an der Abdeckscheibe 3 zurückreflektiert und trifft aufgrund der Krümmung der Abdeckscheibe 3 auf reflektierende Flächen 7 innerhalb des Gehäuses 1. Diese Flächen 7 können z.B. auf designtechnisch vorgesehenen verspiegelten Blenden 8 entstehen, die wiederum wie in Fig. 1 dargestellt, als Einzelbauteil oder als verlängerndes Teil des Reflektors 4 angeordnet sind. An diesen Flächen 7 werden die auftreffenden Lichtstrahlen 6b wiederum reflektiert. Aufgrund der Anordnung der Flächen 7 steigen die von den Flächen 7 reflektierten Lichtstrahlen 6c im wesentlichen senkrecht nach oben und durchdringen die Abdeckscheibe 3. Unter Schlechtwetterbedingungen verursacht dieses Licht eine Eigenblendung des Fahrers.The invention will be described in more detail below with reference to exemplary embodiments. The accompanying drawings show:
Fig. 1:
a vehicle headlight according to the prior art,
Fig. 2:
a vehicle headlight with a first solution variant,
3:
a vehicle headlight with a second solution variant and
4:
a vehicle headlight with a third solution variant.
The in Fig. 1 shown headlight of a motor vehicle consists of a housing 1, the light exit opening 2 is closed by a translucent, curved cover 3 made of clear glass. Within the housing 1, a reflector 4 is arranged, which reflects the light beams 6 emitted by the light source 5 directed to the cover 3. A large part 6a of the light rays penetrates to the outside. However, a lesser part 6b of the light beams is reflected back on the cover plate 3 and, due to the curvature of the cover plate 3, strikes reflective surfaces 7 within the housing 1. These surfaces 7 can be formed, for example, on design-provided mirrored panels 8, which in turn, as in FIG Fig. 1 represented as a single component or as an extending part of the reflector 4 are arranged. At these surfaces 7, the incident light beams 6b are reflected again. Due to the arrangement of the surfaces 7, the light beams 6c reflected from the surfaces 7 rise substantially vertically upward and penetrate the cover 3. Under bad weather conditions, this light causes the driver's self-glare.

Um den die Eigenblendung verursachenden Lichtanteil zu reduzieren, aber die Außenhaut und das Erscheinungsbild des Scheinwerfers nicht oder unwesentlich zu verändern, sind verschiedene Lösungsvarianten vorgesehen.In order to reduce the amount of light causing the glare, but not or not to change the outer skin and the appearance of the headlamp, different variants are provided.

So ist bei dem in Fig. 2 gezeigten Fahrzeugscheinwerfer die dem mindestens einem Leuchtmittel 5 zugewandte Oberfläche 3a der lichtdurchlässigen Abdeckscheibe 3 mit einer Entspiegelung versehen. Entspiegelungen, die durch eine reflektionsmindernde Beschichtung hergestellt werden, sind für andere Anwendungsfälle und für die unterschiedlichsten lichtdurchlässigen Materialien erhältlich. So ergibt die unter dem Markennamen IRALIN bekannte, gut haftende und abriebfeste Mehrfachbeschichtung auf Glas eine sehr gute Reflektionsminderung über einen breiten Spektralbereich von λ = 440 bis 650 nm auf einem niedrigbrechenden Glas. Mit einer unter dem Namen GEDOLIN 85 erhältliche Mehrfachbeschichtung für organische Substrate aus Polycarbonat oder Acrylic erreicht man eine ähnliche Reflektionsminderung. Da auch die äußere Oberfläche 3b der Abdeckscheibe 3 Lichtstrahlen zurück reflektiert, die dann auf die reflektierende Fläche 7 der Blende 8 treffen können, ist nach Fig. 3 vorgesehen, zusätzlich auch die äußere Oberfläche 3b der Abdeckscheibe 3 mit einer Entspiegelung zu versehen.So is in the in Fig. 2 Vehicle headlamp shown the at least one lamp 5 facing surface 3a of the translucent cover 3 provided with an anti-reflective coating. Antireflective coatings, which are produced by a reflection-reducing coating, are available for other applications and for a wide variety of translucent materials. Thus, the well-adhering and abrasion-resistant multiple coating on glass known under the brand name IRALIN gives a very good reflection reduction over a broad spectral range of λ = 440 to 650 nm on a low-refraction glass. A multiple coating for organic substrates made of polycarbonate or acrylic, available under the name GEDOLIN 85, achieves a similar reduction in reflection. Since also the outer surface 3b of the cover 3 reflects light rays back, which can then hit the reflective surface 7 of the diaphragm 8 is after Fig. 3 intended, In addition, the outer surface 3b of the cover 3 to be provided with an anti-reflective coating.

Alternativ, aber auch gemeinsam mit den Maßnahmen, wie sie in den Figuren 2 und 3 gezeigt sind, ist in Fig. 4 die reflektierende Fläche 7 der Zierblende 8, zumindest jedoch der Teil der Fläche 7, auf den die von der Abdeckscheibe 3 reflektierten Lichtstrahlen 6b auftreffen mit einer reflektionsmindernden Beschichtung versehen. Vorzugsweise sind dann für die die Blende 8 durchdringenden Lichtstrahlen hinter der Blende 8 Mittel 9 zum Absorbieren dieser Lichtstrahlen vorgesehen.Alternatively, but also together with the measures, as in the Figures 2 and 3 are shown in Fig. 4 the reflective surface 7 of the trim panel 8, but at least the part of the surface 7, on which the light beams 6b reflected by the cover disk 3 impinge, is provided with a reflection-reducing coating. Preferably, means 8 for absorbing these light beams are then provided behind the diaphragm 8 for the light beams penetrating the diaphragm 8.

Eine andere, nicht dargestellte Möglichkeit besteht darin, auf der Fläche 7 der Blende 8 selbst Mittel 9 vorzusehen, die die auftreffenden Lichtstrahlen absorbieren oder in eine gewünschte Richtung reflektieren, beispielsweise durch eine polarisierende Beschichtung.Another possibility, not shown, is to provide on the surface 7 of the diaphragm 8 itself means 9 which absorb the incident light rays or reflect them in a desired direction, for example by means of a polarizing coating.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

11
Gehäusecasing
22
LichtaustrittsöffnungLight opening
33
Abdeckscheibecover plate
3a3a
Innere Oberfläche der AbdeckscheibeInner surface of the cover
3b3b
Äußere Oberfläche der AbdeckscheibeOuter surface of the cover
44
Reflektorreflector
55
LeuchtmittelLamp
66
Lichtstrahlenlight rays
77
Reflektierende FlächeReflective surface
88th
Blendecover
99
Mittelmedium

Claims (9)

  1. Headlight for motor vehicles, comprising a housing (1) which has a light exit opening (2), a transparent, cover pane (3) covering the light exit opening (2), at least one luminous means (5) arranged in the housing (1), and at least one surface (7) of a lens (8) which is struck by light reflected by the cover pane (3), characterized in that at least the part of the surface (7) on which the light beams reflected by the cover pane (3) impinge is provided with a reflection-reducing coating, and in that means (9) are provided downstream of the lens (8) for the light beams penetrating the lens (8) in order to absorb these light beams.
  2. Headlight according to Claim 1, characterized in that the means (9) consist of a coating.
  3. Headlight according to Claim 1, characterized in that the means (9) consist of a number of structural elements, in particular prisms.
  4. Headlight according to one of Claims 1 to 3, characterized in that the transparent cover pane (3) has an anti-reflection coating on its surface (3a) facing the at least one luminous means (5).
  5. Headlight according to Claim 4, characterized in that the anti-reflection coating is provided for the visible spectral region between λ = 425 to 650 nm, in particular λ = 500 to 625 nm, and has a spectral reflection factor of max. R = 5%, preferably R < 1%.
  6. Headlight according to Claim 4 or 5, characterized in that the anti-reflection coating is a reflection-reducing multiple coating.
  7. Headlight according to one of Claims 4 to 6, characterized in that the transparent cover pane (3) additionally has an anti-reflection coating on the surface (36) averted from the luminous means (5).
  8. Headlight according to one of Claims 1 to 6, characterized in that the transparent cover pane (3) consists of polycarbonate or acrylic.
  9. Headlight for motor vehicles, comprising a housing (1) which has a light exit opening (2), at least one luminous means (5) arranged in the housing (1), and a transparent cover pane (3) covering the light exit opening (2), an anti-reflection coating being provided at least on the surface (3a), facing the at least one luminous means (5), of the transparent cover pane (3), characterized by at least one surface (7) which is struck by the light reflected by the cover pane (3), the surface (7) having means (9) which absorb and/or directionally reflect the impinging light, and the means (9) consisting of a number of structural elements.
EP00967834A 1999-10-09 2000-10-02 Headlight for a motor vehicle Expired - Lifetime EP1224419B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19948731 1999-10-09
DE19948731 1999-10-09
DE10033776A DE10033776B4 (en) 1999-10-09 2000-07-12 Headlight for a motor vehicle
DE10033776 2000-07-12
PCT/EP2000/009637 WO2001027526A1 (en) 1999-10-09 2000-10-02 Headlight for a motor vehicle

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EP1224419A1 EP1224419A1 (en) 2002-07-24
EP1224419B1 true EP1224419B1 (en) 2011-05-04

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EP00967834A Expired - Lifetime EP1224419B1 (en) 1999-10-09 2000-10-02 Headlight for a motor vehicle

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CN (1) CN1254628C (en)
WO (1) WO2001027526A1 (en)

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DE102004004398A1 (en) * 2003-05-23 2004-12-09 Volkswagen Ag Headlights or lights for a motor vehicle
CN100462619C (en) * 2004-06-30 2009-02-18 苏志国 Anti-dazzling vehicle lamp
JP4425764B2 (en) * 2004-11-05 2010-03-03 本田技研工業株式会社 Motorcycle headlamp structure
CN100532924C (en) * 2005-02-24 2009-08-26 张静中 Lighting device with anti-dizzy device
CN104654157A (en) * 2013-11-19 2015-05-27 丹阳市中远车灯有限公司 Automotive headlamp
DE102015216746A1 (en) * 2015-09-02 2017-03-02 Volkswagen Aktiengesellschaft Vehicle lamp and method for providing a light function by means of a vehicle lamp
JP2018192881A (en) * 2017-05-16 2018-12-06 矢崎総業株式会社 Indoor lighting lamp
WO2021043917A1 (en) * 2019-09-04 2021-03-11 Zkw Group Gmbh Motor vehicle headlamp

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EP0158331A2 (en) * 1984-04-10 1985-10-16 GTE Products Corporation Motor vehicle lighting system including a sealed lens member as part thereof

Also Published As

Publication number Publication date
EP1224419A1 (en) 2002-07-24
WO2001027526A1 (en) 2001-04-19
CN1378631A (en) 2002-11-06
CN1254628C (en) 2006-05-03

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