• 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:
    A headlamp for vehicles, having a plurality of light sources (5, 13) and an optics (11) associated with the light sources, in which a first light unit (1) with at least one light source (13) for generating a first, dynamically variable light image, and a second , Laser light unit (4) with at least one laser light source (5), at least one beam deflection unit (7) and at least one light conversion unit (8) are provided, and the optical system (11) for merging the light image of the first light unit and the light conversion unit of second, laser light unit generated light image is set up for a total light distribution on a roadway.
    公开号:AT514333A4
    申请号:T50417/2013
    申请日:2013-06-25
    公开日:2014-12-15
    发明作者:Markus Reinprecht
    申请人:Zizala Lichtsysteme Gmbh；
    IPC主号:
    专利说明:

    P13150
    Headlights for vehicles
    The invention relates to a headlamp for vehicles, with a plurality of light sources and an optics associated with the light sources.
    A headlamp of this type is known for example from US 2011/0249460 Al. In this headlamp, in addition to a conventional headlamp module for a low-beam light distribution, a scanning laser system is provided, in which two laser beams deflected via moving micromirrors generate a luminous image on a phosphor matrix, which is projected by means of a lens on a roadway in order to generate a dynamically changeable light configuration there ,
    In one disclosed in US 2008/0013329 Al headlamp a flat laser element is provided with individual, individually controllable light fields, the light fields each having a microlens of a superior microlens array is assigned, which projects the respective generated light image on a roadway.
    In other headlamps for generating dynamically variable luminous images, as shown and described for example in DE 10 2008 013 603 Al or in DE 10 2011 054 234 Al, an array of individual, individually controllable light sources, preferably LEDs, provided Each light source is assigned a single look or light guide in the form of a light guide or a reflector. The light image present at the light exit surface of the light guides is projected onto the roadway by means of optics, generally a lens.
    On the other hand, headlights have become known in which a central light source is provided, whose light is projected on a plurality of optical fibers and special optics on a roadway to produce a dynamically variable light distribution on this. Partial light digital light processors (DLPs) are used for light distribution, as in US 7156542 B2, or mechanically movable and thereby selectively controllable light guide, such as in DE 40 06 938 Al.
    Although prior art headlamps of the type described above make it possible to have a light pattern which can be dynamically adapted to the respective driving conditions, there is an increased need for further functionalities in adaptive headlamp systems, especially with regard to high beam functions and a higher level Resolution of the illuminated image. Notwithstanding these requirements, however, the cost price should be within reasonable limits.
    Accordingly, it is an object of the invention to provide a headlamp of the subject type, which offers a high dynamic resolution, especially in a remote area of the headlight illumination at the lowest possible cost.
    This object is achieved with a headlight of the type specified, in which according to the invention a first light unit with at least one light source for generating a first, dynamically variable light image and a second laser light unit with at least one laser light source, at least one beam deflection unit and at least one light conversion unit are, and the optics for merging the two luminous images, which is set up by the first lighting unit and at the light conversion unit of the second, laser light unit generated luminous images to a total light distribution on a roadway.
    Thanks to the invention, a headlamp is obtained which offers a high resolution, although the number of individual light sources is in a frame which does not cause problems in terms of cost or technical implementation, for example in terms of cooling and dimensions.
    In a practice-proven embodiment, it is provided that the first lighting unit has a plurality of light sources and each of the individual optics associated with the light sources.
    It may further be advantageous if the optics has two separate optical units, wherein each lighting unit is assigned to each one optical unit.
    On the other hand, it may be advisable in terms of small size, if the optics has a single common optical unit, which is associated with both light units. 3/15 -3- P13150
    In another useful variant, it is provided that the at least one optical unit is designed as a lens.
    Especially with regard to serviceability, it is expedient if the at least one laser light source, which are combined in a structural unit, the at least one beam deflection unit and the at least one light conversion unit of the laser light unit.
    In a very compact variant, it is advantageous if the at least one light conversion unit of the laser lighting unit is provided on the first lighting unit in the region of its light exit surfaces.
    A highly proven variant is characterized in that the at least one beam deflection unit is designed as a micromirror pivotable about at least one axis.
    Furthermore, with regard to a good adaptation of the illumination image, it is advantageous if the first illumination unit has individual light sources arranged in at least two rows and a plurality of columns, wherein the individual light sources can be driven to generate a dynamically variable light distribution on a roadway.
    It also improves the adaptability when the at least one beam deflecting unit for generating a dynamically variable illumination image consisting of optionally illuminable segments is set up on the light conversion unit.
    If the light sources of the first light unit are LEDs, favorable pricing results in a large selection with regard to the spectral light distribution and the light intensities.
    The invention together with further advantages is explained in more detail below by way of example embodiments, which are illustrated in the drawing. In this show
    1 shows schematically the essential components of a headlamp according to the invention in a first embodiment,
    2 shows a second embodiment of a headlamp according to the invention,
    Fig. 3 shows a third embodiment of a headlamp according to the invention, 4/15 -4 P13150
    4 shows the illuminated image of the first lighting unit with a plurality of light sources,
    Fig. 5 shows the illuminated image of the second laser light unit and
    Fig. 6, composed of the light images of Fig. 4 and 5 total light distribution.
    Reference is first made to Fig. 1, which shows a schematic diagram of a first embodiment of the invention. In this and the following figures, only those parts are shown which are essential for the function of the invention. For the sake of simplicity, other parts which are well known to the person skilled in the art and are also necessary for a headlight, such as a housing, adjusting devices, etc., have been omitted.
    1 shows a first lighting unit 1, which, as shown and described in more detail below, has an array of individual light sources, in particular LEDs, which can be controlled individually or in groups individually. The individual light sources are also assigned in this figure, not shown individual optics, which are formed for example in the form of a light guide or a reflector and at a light exit surface 2 generate a luminous image which can be projected by means of an optics, here by means of a lens 3 on the road ,
    Furthermore, a second, namely a laser light unit 4 is provided, which is shown on the left in FIG. 1 and which contains as essential components a laser light source 5 which generates a laser beam 6, a beam deflection unit 7, which is embodied here as a micromirror, and a Light conversion unit 8 has. Such scanning laser light units are known, wherein the laser beam 6 generated by a swinging about one or two axes micromirror of the beam deflecting unit 7 at the light conversion unit 8 a specifiable luminous image, which is projected by another optics, here a lens 9, also on the road and combined with the light image generated by the first light unit 1 to form a total light image or a total light distribution on the roadway.
    Although shown here are two lenses 3 and 9, this should not preclude other optics designs from being used. Thus, the two lenses 3 and 9 can be further optics, e.g., 5/15 -5 P13150. a lens, be subordinate or it can be used optics, which also use reflectors.
    The laser light source 5 may, for example, generate a laser beam 6 with blue light, which is converted to white light at a phosphor of the light conversion unit 8. Although only a single laser light unit 4 is shown in this example, it is quite possible to use at least one further laser unit, which in turn scans the laser beam via the same beam deflection unit or via a further beam deflection unit to the light conversion unit 8.
    As can also be seen in the prior art, it is possible to apply a phosphor layer of the light conversion unit also from the back with the laser beam, wherein the radiation of phosphorus converted light takes place to the front.
    In Fig. 2, a second embodiment of the invention is shown, wherein the first lighting unit 1 is shown in more concrete in one of the preferred embodiments and the same reference numerals are used for comparable parts. At the front of the first light unit 1 can be seen individual optics 10, which are designed here as reflectors, at the base - in Fig. 2 not visible - light sources, preferably LEDs, are arranged. In the present case, the lighting unit 1 has light sources arranged in three rows and 2x8 and 1x28 columns and correspondingly many individual optics 10 or reflectors. Here, too, a light conversion unit 8 is provided in the region of the light exit surface of the first lighting unit 1, via which a laser beam 6 generated by a laser light source 5 deflects, deflected by an oscillating micromirror of a beam deflection unit 7. Here, the laser light unit 4 is formed by the laser light source 5, the beam deflection unit 7, and the light conversion unit 8 arranged on the first light unit 1.
    In contrast to the embodiment of FIG. 1 here is a two light units 1 and 4 common optics 11, namely a lens provided which merges the present at the exit surfaces of the optics 10 luminous image and determined by the scanning laser beam 6 at the light conversion unit 8 luminous image and can project onto a roadway. 6/15 -6- P13150
    In Fig. 3, a third embodiment of a headlight according to the invention is shown schematically, which corresponds in principle to that of FIG. 2, wherein the same reference numerals are used for comparable parts. The first lighting unit 1 here consists of a light source unit 12 with individual light sources 13, which are designed as LEDs and are arranged in three rows of 26 columns. This light source unit 12 or the individual light sources 13 is associated with a primary optics 14 which, according to the number of LEDs or light sources 13, here 78, has individual total reflecting light guides 15, which run forward and open in a light exit surface 16. At this light exit surface 16, in turn, a light conversion unit 8 is arranged, which is scanned by the laser beam 6, wherein the monochromatic laser light is converted into a usable light for a road illumination (white light).
    In the embodiments according to FIGS. 2 and 3, it can be seen that a number of the light exit openings of the individual light sources are covered by the light conversion unit 8 with a corresponding phosphor surface. Here, there is the possibility that the spectral light distribution of the individual light sources 13 or LEDs in FIG. 3 is tuned to the phosphor of the light conversion unit 8 in such a way that they illuminate it or also cause it to shine, as shown in FIGS. 2 and 3 Area for lighting is not "lost". However, it is also possible not to illuminate the corresponding area by the individual light sources, in which case the individual light sources can also be omitted in this area.
    FIGS. 4 to 6 show three luminous images of a headlamp according to the invention, FIG. 4 showing the luminous image of a first luminous unit alone, the illumination in the vertical direction in this example being from -1 ° to + 5 ° and in the horizontal direction of FIG 15 ° left to 15 ° right and a division into three rows of 28 columns is provided. It should of course be clear that any division can be made here and, for example, that not every row should have the same number of columns.
    5 now shows, on an enlarged scale, an exemplary luminous image which is generated by the second reading light unit 4. Here, the ranges in the horizontal direction of 6 ° left to 6 ° right and in the vertical direction of -1 ° to + 2 ° are preferred because these 7/15 -7- P13150
    Areas provide the majority of the impressions that are necessary for a ride in the dark for the driver.
    These two wet images are superimposed by the optics 3 + 9 or 11 and combined to form a total light image, which is projected onto the roadway. A corresponding wet image is shown in Fig. 6, from which one recognizes the composition of the light images of Fig. 4 and Fig. 5, by the additional illumination of the area shown in Fig. 5, the functionality of the headlamp is substantially increased, as for this area a high-resolution laser light unit can be used, for example, which allows a vertical resolution of 0.5 ° in the entire illumination area and of 0.1 ° in the horizontal area.
    The values given below may further emphasize the advantages of the invention. The maximum illumination of the individual, caused by LEDs pixels is currently at about 80 to 100 lx, which is relatively little for a high beam, however. When combined with the laser light unit, which also reaches a maximum of, for example, 80 to 100 lx, a high beam is obtained which provides 180 to 200 lx of illumination in the high beam maximum, which meets current requirements for good headlights.
    By superimposing different light images, color effects can also be blurred and a more homogeneous, same-colored light image can be created.
    The combination of the two lighting units also makes it possible to achieve a high dynamic resolution. Due to the relatively "rough" Pixel of the first lighting unit 1, a relatively large area is covered, which is further subdivided by the high-resolution laser light unit 4. As a result, very small areas can be controlled directly, so that the resolution of the overall system, as already mentioned, can be less than 0.1 ° horizontally and less than 0.5 ° vertically.
    The numbers mentioned are merely examples and even better values can be achieved by using even higher-resolution two-dimensional laser scanners in this regard. 8/15 -8- PI3150
    Of course, the areas in which the luminous images are combined, the respective requirements are made arbitrary, with no limitation on a high beam is considered.
    Due to the combination of the two light units, the illumination by the laser light unit 4 can be dispensed with even at lower speeds, which is advantageous for safety reasons, because, for example, when the vehicle is stationary, a light which is potentially dangerous or unpleasant for the person, emanating from the laser light unit not delivered.
    Finally, it should be emphasized that the combination of the two lighting units results in a favorable price-performance ratio compared to only laser scanners based headlamps. 9.15
    权利要求:
    Claims (11)
    [1]
    Claims 1. A headlamp for vehicles, comprising a plurality of light sources (5, 13) and an optical unit (3, 9, 11) associated with the light sources, characterized in that a first lighting unit (1) is provided with at least one light source (13). for generating a first, dynamically variable illumination image and a second, laser light unit (4) with at least one laser light source (5), at least one beam deflection unit (7) and at least one light conversion unit (8) are provided, and the optics (3, 9; 11) for merging the two luminous images, which is set up by the first lighting unit and at the light conversion unit of the second, laser light unit generated luminous images to a total light distribution on a roadway.
    [2]
    2. Headlight according to claim 1, characterized in that the first lighting unit (1) has a plurality of light sources (13) and each associated with the light sources Einzeleloptiken (10; 15).
    [3]
    3. Headlight according to claim 1 or 2, characterized in that the optics has two separate optical units (3, 9), wherein each lighting unit (1, 4) is associated with each one optical unit.
    [4]
    4. Headlight according to claim 1 or 2, characterized in that the optics has a single common optical unit (11) which is associated with both light units (1, 4).
    [5]
    5. Headlight according to one of claims 1 to 4, characterized in that at least one optical unit (3, 9; ll) is designed as a lens.
    [6]
    6. Headlight according to one of claims 1 to 5, characterized in that the at least one laser light source (5), the at least one beam deflection unit (7) and the at least one light conversion unit (8) of the laser light unit (4) combined in a structural unit are. 10/15 -10- P13150
    [7]
    7. Headlight according to one of claims 1 to 5, characterized in that the at least one light conversion unit (8) of the laser light unit (4) on the first light unit (1) in the region of the light exit surface (16) is provided.
    [8]
    8. Headlight according to one of claims 1 to 7, characterized in that the at least one beam deflection unit (7) is designed as a pivotable about at least one axis micromirror.
    [9]
    9. Headlight according to one of claims 1 to 8, characterized in that the first lighting unit (1) arranged in at least two rows and a plurality of columns arranged individual light sources (13), wherein the individual light sources for generating a dynamically variable light distribution on a roadway controlled are.
    [10]
    10. Headlight according to one of claims 1 to 9, characterized in that the at least one beam deflection unit (7) for generating a selectively illuminatable segments consisting of dynamically variable illumination image at the light conversion unit (8) is arranged.
    [11]
    11. Headlight according to one of claims 1 to 10, characterized in that the light sources (13) of the first lighting unit (1) are LEDs. 11/15
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    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 |
    2019-02-15| MM01| Lapse because of not paying annual fees|Effective date: 20180625 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50417/2013A|AT514333B1|2013-06-25|2013-06-25|Headlights for vehicles|ATA50417/2013A| AT514333B1|2013-06-25|2013-06-25|Headlights for vehicles|
    JP2016520189A| JP6018342B2|2013-06-25|2014-05-26|Floodlight device for vehicle|
    PCT/AT2014/050123| WO2014205466A1|2013-06-25|2014-05-26|Headlights for motor vehicles|
    CN201480035836.3A| CN105308385A|2013-06-25|2014-05-26|Headlights for motor vehicles|
    US14/898,188| US10101001B2|2013-06-25|2014-05-26|Headlights for motor vehicles|
    EP14738353.3A| EP3014171B1|2013-06-25|2014-05-26|Vehicle headlamp|
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