• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a vehicle headlight (100), comprising at least one light unit (2) for generating a main light function, the light unit (2) consisting of at least one light source and at least one lens (3), which comprises at least one lens (3) at least one light source emitted light as the main light-light distribution - in a built-in state of the light unit in a vehicle - in an area in front of the vehicle as the main light-light distribution maps; and at least one additional light unit (4), which is designed to generate an additional light light distribution, wherein the at least one additional light unit (4) is arranged such that in operation of the additional light unit (4) luminous or light emitting areas ( 5) of the auxiliary light unit (4) are optically close to the at least one lens (3) of the main light-light unit (2). According to the invention, the at least one lens (3) of the at least one main light-light unit (2) is at least partially provided with an antireflection coating (6a) at its light entry surface (3a), and / or the at least one lens (3) of the at least one main light-light unit (2) is at least partially provided with an antireflection coating (6b) at its light exit surface (3b), and wherein in the main light mode the at least one additional light unit (4) is switched on.
    公开号:AT512181A4
    申请号:T50010/2012
    申请日:2012-01-24
    公开日:2013-06-15
    发明作者:Markus Dipl Ing Danner；Andreas Luger
    申请人:Zizala Lichtsysteme Gmbh；
    IPC主号:
    专利说明:

    P12448
    Vehicle headlight for generating a Hauftuchtverteilung and a
    ADDITIONAL LIGHT DISTRIBUTION
    The invention relates to a vehicle headlight, comprising at least one light unit for generating a main light function, wherein the light unit consists of at least one light source and at least one lens, for example a projection lens (converging lens), which at least one lens transmits the light emitted by the at least one light source as main light. Light distribution - in an installed state of the light unit in a vehicle - in an area in front of the vehicle as the main light-light distribution and further comprising at least one additional light unit, which is designed to generate an additional light light distribution, wherein the at least one additional light unit is arranged such that, in operation of the additional light unit, luminous or light-emitting regions of the additional light unit are arranged optically close to the at least one lens of the main light-light unit.
    Such combined vehicle headlamps are well known. In these headlamps, there are (among others) in the headlamp housing, for example, a main light-unit, such as a dipped-beam unit and an auxiliary unit, e.g. arranged in the form of a daytime running light unit. The light-emitting area of the daytime driving light unit is, for example, light rings, light rods, etc., which are often shaped in a special way and thus represent a trademark for the respective vehicle brand.
    These light-emitting areas of the daytime running lights are easy to see during the day. In darkness, when the main light-light unit, that is usually the dipped beam is turned on, however, the light-emitting area of the additional light-light unit is outshined by the main light and is no longer visible. Legal regulations allow namely the operation of the additional light (daytime running lights) in addition to the main light only as position light with a maximum brightness of about 5 -10% of the additional light (daytime running lights). Due to the high scattered light values of the main light (dipped beam), the shape of the light emitting areas of the additional light / light unit is then perceived only weakly or not at all. 24-01-2012
    P12448 E <i4. | -2- ί102012 / 50θω
    It is an object of the invention to provide a vehicle headlamp, in which it is possible even during operation of the main light, to easily recognize the shape of the light-emitting area of the additional light-light unit.
    This object is achieved with a vehicle headlamp mentioned above in that, according to the invention, the at least one lens of the at least one main light-light unit is at least partially provided with an antireflection coating on its light entry surface, and / or the at least one lens of the at least one main light unit at their Light source of the main light-light unit remote light exit surface is at least partially provided with an anti-reflection coating, and wherein in the main light mode, the at least one additional light unit is turned on.
    The effect occurring in a conventional headlight that the additional light is no longer visible during operation of the main light, results from the fact that on the lens of the main light and light unit scattered light reflections occur, so that the lens appears lit and thus the Extra light-light unit (ie, the one or more light-emitting areas of this unit), especially if it is operated as required by law only strongly dimmed, no longer or only barely visible, so that the brand of each vehicle manufacturer is no longer recognizable.
    This effect occurs when the luminous or light-emitting regions of the additional light unit are arranged optically close to the at least one lens of the main light-light unit. "Visually close" means that this area is in the optical influence of the lens area, so these areas are in the scattered light range of the main light function and are outshined by this in the operation of the main light function. The brighter or stronger the main light function is, the more the scattered light reflections on the lens affect the visibility of the additional light function, and this can still be "optically close" despite greater distance. be. In principle, it can be stated that it is often sufficient if both light units are accommodated together in the housing of the headlamp that the condition "optically close". is satisfied. 24-01-2012 iBraM: 25- & 1-2012 PI2448 E014.il-3
    Again, "optically close" means that the addressed areas of the auxiliary light unit are at a distance from the lens of the main light unit, that they are outshone by the (untreated) lens during operation of the main unit light.
    The invention now overcomes this problem by coating the lens with an antireflection coating (AR coating). As a result, the reflections occurring on or in the lens can be at least reduced, so that the lens produces no or substantially less scattered radiation than in the uncoated state. Such a lens acts or is dark even when the main light-light unit is switched on and thus no longer overshoots the switched-on additional light, this is thus recognizable.
    Even above the cut-off line of a low-beam distribution, certain low levels of light in the photograph are provided by law ("signal light values"), the corresponding minimum and maximum values, etc. are in corresponding statutory regulations, such as ECE, SAE, CCC, ... described; For example, overhead signposts or traffic signs can be illuminated in general.
    In some circumstances, the reduced stray light of the lens may cause these "signal light values" required in the main light distribution. can no longer be achieved; However, these can be achieved by the additional light switched on, which can be operated for this purpose even with higher light intensity than previously allowed.
    Under the "light entry surface &quot; is that region of the lens through which light enters the lens; this is usually the area which faces the light source of the main light-light unit; Light exits the lens via the light exit surface and is emitted onto the roadway or into the area in front of the vehicle. According to the invention, it may now be sufficient if only one of the two surfaces is provided with the AR coating. It may also be sufficient if one or both surfaces are / are provided only partially and not completely with the AR coating.
    With regard to the effect to be achieved, namely to reduce the scattered light generated by the lens, it is however of advantage if the at least one lens is attached to both its 24-01-2012 -4- P12448
    Light entrance surface and at its light exit surface is at least partially coated with an anti-reflection coating.
    Likewise, it is advantageous if the light entry surface and / or the light exit surface are completely coated with an anti-reflection coating, and it is particularly advantageous if both surfaces are completely coated. Also manufacturing technology, this is an advantage.
    In order for the additional light to be recognizable in the main light mode, and furthermore to achieve the required signal light values in the main light distribution, it is provided that the additional light-priority unit is switched on in the main light mode and is preferably operated dimmed.
    As already mentioned above, the legally prescribed scattered light values are generally reduced to such an extent by the coated lens that the statutory provisions can no longer be met. This is compensated in the present invention by the additional, preferably dimmed operation of the auxiliary light unit.
    In particular, it may be provided that the additional light unit is operated in the main light mode with a lower light intensity than the main light-light unit, and the additional light-light unit is dimmed, for example, to about 40% of the light intensity of the main light unit.
    It may occur that the additional light function, for example a daytime running light, if it were operated simultaneously with the main light function, such as a dipped beam, shines into areas of the dipped beam, so that the intended light values would be exceeded there. Accordingly, a daytime running light (in full operation) must not be operated together with a dipped beam. Frequently, therefore, the daytime running light is switched off or dimmed to the extent that it realizes the function of a position light, which is legally permissible.
    So that in the present invention, the branding, so the luminous areas of the additional light in the operation of the main light are visible, this is operated dimmed so that it is well visible on the one hand, on the other hand, the scattered light values for the main Bönted: -25103 ^ 012 iEO. 14.1 102012 / 5.0010 P12448 - 5 - without increasing the light values in the main light in such a way that the legal requirements would no longer be met.
    In this case, in one variant, the numerical values described above have proven to be favorable, but as a rule this is a vote to be made for each headlight; In general, the additional light should be dimmed such that the scattered light values in the main light, e.g. Above the HD line in a low beam met (ie neither exceeded nor fallen below).
    Specifically, it can be provided that the main light distribution is a low-beam distribution or a Femlichtverteilung, the above-described topics are particularly important in low-beam light.
    In addition, it can be provided that the additional light is a daytime running light and the additional light distribution forms a daytime running light distribution, or that the additional light is a position light or a direction indicator.
    In concrete embodiments of the invention, it can further be provided that the additional light unit has at least one light ring, light bar, etc., which is optically close to the at least one lens of the main light unit, preferably around the Lens is arranged around.
    In principle, it is irrelevant to the invention from which components the light-emitting regions of the additional light are formed. Light rings, light sticks, etc. are often used because they are malleable in relatively arbitrary shapes and so can accept the desired appearance of the respective manufacturer. Often, these light emitting areas are then arranged around the lens of the main light as a solid ring or one or more sub-rings, so that they are very close to the lens and slightly outshone if no action is taken in accordance with the present invention.
    As already mentioned above, it can be provided that the luminous ring, light rod, etc is arranged in the form of a circle, one or more semicircles, or in the form of one or more curved shapes around the at least one lens. 24-01-2012 P12448 2012 4.1 -6-
    1O20I2 / 5OMD
    Coordination of the coating of the lens can be carried out particularly well if an antireflection coating consists of two or more layers.
    It is advantageously provided that adjacent layers of the antireflection coating have different refractive indices.
    The thickness of the layers is typically in the micrometer range.
    In the following the invention is explained in more detail with reference to the drawing. In this shows
    Fig. 1 shows a conventional lens for a main light-light unit,
    FIG. 2 shows a vehicle headlight with two light modules, each light module having a main light-light unit and an additional light-light unit, FIG.
    Fig. 3 is a coated lens, and
    4 shows a vehicle headlight from FIG. 2 with coated lenses.
    Figure 1 shows a lens 3 for a main light-light unit, ζ, Β. for a low beam light unit, which is designed in the form of a projection module and e.g. a light source, a reflector and the projection lens 3 has.
    Light Lem, which from the light source, not shown, optionally via the reflector also not shown on the light entrance surface 3a of the lens is reflected to a part (L ^ fi), for example, be refected about 4% of the incident luminous flux Furthermore, light is at Exit from the lens 3 via the light exit surface 3b at this surface 3b reflected (Lr * e), and there are internal to further reflections. These reflections also amount to about 4%, so that about 92% of the incident luminous flux escape from the lens (Law) and can be used to generate a main light distribution.
    On the one hand, light is lost through these reflections; on the other hand, the lens is bright (illuminated). 24-0'2012
    P12448 CID201.2 / 50010 - 7 -
    FIG. 2 shows a vehicle headlight 100 with two light modules 1, each light module comprising a light unit 2 for generating a main light function and an additional light unit 4. The main light unit 2 comprises at least one light source (not shown), possibly a reflector (not shown) (and / or a primary optic) and a lens 3 which detects the light emitted from the light source as a main light distribution - in an installed state Light unit in a vehicle - in an area in front of the vehicle as the main light-light distribution maps.
    The additional light unit 4, with which a Zusatzhchtverteilung is generated, is arranged such that in operation of the additional light unit 4 luminous or light emitting areas 5, which are exemplified here as a closed light ring 5, optically close to the lens. 3 the main light-light unit 2 are arranged.
    For example, in the illustrated, non-limiting example, one main light unit produces a low beam and the other a high beam while the two auxiliary light units 4 (light rings) together generate a daytime driving light. In this case, it is correspondingly expedient if both lenses are coated according to the invention. For example, if only one of the lenses surrounded by a region 5, such as a light ring, it is usually only necessary if this lens is coated; normally the area 5 to the other lens that he does not surround is no longer "visually close". This brings a cost reduction.
    But it can also be provided if both lenses are optically or geometrically identical, that both lenses are coated, even if this would not be necessary for one of the lenses. Thus, the variety of components can be reduced.
    In the main light mode, when using a lens as shown in FIG. 1, the lens 3 now shines so strongly or generates such strong reflection scattering that, as indicated in FIG. 2, this reflection radiation Rs outshines the luminous area 5 and the light ring Lv formed therefrom. 24-01-2012 iBrinted: P12448 54) 172Q12 102012/50010 -8-
    FIG. 3 now shows a lens 3 'according to the invention. This is a lens 3 as shown in FIG. 1, which is provided with an antireflection coating 6a, 6b at its light entry surface 3a and at its light exit surface 3b.
    As shown in FIG. 3, such a coating 6a, 6b reduces the light loss at each surface 3a, 3b to approximately 0.5% (calculated from the total luminous flux), so that the lens 3 'appears dark even when the main light is activated.
    FIG. 4 once again shows the headlight 100 from FIG. 2, now with coated lenses 3 '.
    As can be seen schematically, the main light-light unit 2 hardly generates any stray light, so that the luminous areas 5 of the additional light units 4 become visible when they are switched on (preferably dimmed) in the main light mode.
    Referring again to Figure 1 and in particular to Figure 3, reference is made to the following: When light enters the lens 3 'there are 2 reflections: 1) Air - AR layer 6a 2) AR layer 6a - lens material 3
    These two reflections must destructively interfere so that they cancel each other out and there is little or no total reflection.
    There are 2 reflections at the light exit from the lens 3 ': 1) Lens material 3 - AR layer 6b 2) AR layer 6b - Air
    These two reflections must also destructively interfere so that they cancel out and there is little or no total reflection in the lens body 3 into it.
    The AR coating, ie the AR layers 6a, 6b are optimized accordingly 24-01-2012
    ΓΊ2448
    For the simplest AR coating theoretically a layer with wavelength / 4 ("quarter wave plate") suffices. In this case nl = V (nO ns), with ni = refractive index AR coating no = refractive index air ns = refractive index lens material
    The material of the lens is, for example, glass, plastic (such as PC ("polycarbonate") or PMMA ("polymethylmethacrylate", Plexiglas)) or silicone.
    The lens may also be formed of two or more different materials, for example glued together (e.g., Achromat).
    The matching of the coating of the lens can be carried out particularly well if the antireflection coating 6a, 6b consists of two or more layers, wherein it is advantageously provided that adjacent layers of the antireflection coating 6a, 6b have different refractive indices.
    A headlight according to the present invention is capable of meeting the legal requirements such as ECE, SAE, CCC,....
    Vienna, 24th January 2012 19/13 124 * 01-2012
    权利要求:
    Claims (11)
    [1]
    1. Vehicle headlight (100) comprising at least one light unit (2) for generating a main light function, wherein the light unit (2) consists of at least one light source and at least one light source Lens (3) which at least one lens (3) images the light emitted from the at least one light source as a main light light distribution - in a built-in oil state of the light unit in a vehicle - in an area in front of the vehicle as a main light light distribution; at least one additional light unit (4), which is designed to generate an additional light light distribution, wherein the at least one additional light unit (4) is arranged such that in operation of the additional light unit (4) luminous or light emitting areas ( 5) of the auxiliary light unit (4) are optically close to the at least one lens (3) of the main light-light unit (2), characterized in that the at least one lens (3) of the at least one main light-light unit (2) its light entry surface (3a) at least partially with an anti-reflection coating (6a) is provided, and / or the at least one lens (3) of the at least one main light-light unit (2) at its light exit surface (3b) at least partially provided with an anti-reflection coating (6b) is, and wherein in the main light mode, the at least one additional light unit (4) is turned on.
    [2]
    2. Vehicle headlight according to claim 1, characterized in that the at least one lens (3) both at its light entry surface (3a) and at its light exit surface (3b) at least partially coated with an anti-reflection coating (6a, 6b). 10/13 24-01-2012 (RnrTtejd; 25 ^ DIr2Q32 EB34.TI 102012/50010 P12448 -11 -
    [3]
    3. Vehicle headlight according to claim 1 or 2, characterized in that the Uchteintrittsfläche (3a) and / or the light exit surface (3b) are completely coated with an anti-reflection coating (6,6b).
    [4]
    4. Vehicle headlight according to one of claims 1 to 3, characterized in that the additional Uchteinheit (4) is operated dimmed in the main light mode.
    [5]
    5. A vehicle headlamp according to claim 4, characterized in that the additional light unit (4) is operated in the main light mode with a lower light intensity than the main light-light unit, and the additional light-light unit (4), for example, to about 40% of the light intensity of the main light unit is dimmed.
    [6]
    6. Vehicle headlight according to one of claims 1 to 5, characterized in that the main light distribution is a low beam distribution or a Femlichtverteilung.
    [7]
    7. Vehicle headlight according to one of claims 1 to 6, characterized in that the additional light is a daytime running light and the additional light distribution forms a daytime running light distribution, or that the additional light is a position light or a direction indicator.
    [8]
    8. A vehicle headlamp according to one of claims 1 to 7, characterized in that the additional light unit as a luminous in operation or light emitting area at least a luminous ring, light rod, etc., which optically close to the at least one lens of the main light unit (2), preferably arranged around the lens.
    [9]
    9. A vehicle headlamp according to claim 8, characterized in that the light ring, light rod, etc. in the form of a circle, one or more semicircles, or in the form of one or more curved shapes around the at least one lens (3) is arranged around.
    [10]
    10. Vehicle headlamp according to one of claims 1 to 9, characterized in that an anti-reflection coating (6a, 6b) consists of two or more layers. 11/13 24 ^ 01 -2012: ς- »Ά '.' &Gt; ϋ * ϋ · &gt; ίϋΜ Μί.ΜΜί. P12448 1.1 10.2012 / 50010 -12-
    [11]
    11. Vehicle headlight according to claim 10, characterized in that adjacent layers of the anti-reflection coating (6a, 6b) have different refractive indices. Vienna, 24th January 2012 12/13 24-01-2012
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    同族专利:
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    引用文献:
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    EP1548356A1|2003-12-22|2005-06-29|Schott Ag|Headlamp with stepped lens and variable distance between light source and reflector|
    JP2008097928A|2006-10-10|2008-04-24|Stanley Electric Co Ltd|Vehicular lamp|
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    DE102009017424B4|2009-04-15|2014-10-23|Automotive Lighting Reutlingen Gmbh|Attachment optics for a light source and illumination device for a motor vehicle with such an attachment optics|JP6443722B2|2014-07-30|2018-12-26|パナソニックＩｐマネジメント株式会社|LIGHTING DEVICE AND AUTOMOBILE WITH LIGHTING DEVICE|
    FR3061540B1|2017-01-02|2019-10-11|Valeo Vision|LUMINOUS MODULE FOR MOTOR VEHICLE COMPRISING A LENS WITH ANTIREFLECTION COATING|
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    FR3086036A1|2018-09-13|2020-03-20|Valeo Vision|OPTICAL ELEMENT FOR A MOTOR VEHICLE COMPRISING AN ANTI-REFLECTIVE LAYER|
    法律状态:
    2016-11-15| HC| Change of the firm name or firm address|Owner name: ZKW GROUP GMBH, AT Effective date: 20161014 |
    2018-09-15| MM01| Lapse because of not paying annual fees|Effective date: 20180124 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50010/2012A|AT512181B1|2012-01-24|2012-01-24|VEHICLE HEADLIGHTS FOR GENERATING A MAIN LIGHT DISTRIBUTION AND AN ADDITIONAL LIGHT DISTRIBUTION|ATA50010/2012A| AT512181B1|2012-01-24|2012-01-24|VEHICLE HEADLIGHTS FOR GENERATING A MAIN LIGHT DISTRIBUTION AND AN ADDITIONAL LIGHT DISTRIBUTION|
    EP12199426.3A| EP2620692B1|2012-01-24|2012-12-27|Vehicle headlamp for generating a main light distribution and an additional light distribution|
    CN201310026674.4A| CN103225780B|2012-01-24|2013-01-24|For producing key lights distribution and the photodistributed headlight for vehicles of auxiliary lamp|
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