• 专利附录
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    • 专利摘要:
    The invention relates to a light module (1) for a motor vehicle, comprising at least one light source (1, 10, 11, 100, 110), at least one reflector (2, 20, 21, 200, 210, 2000), and at least one lens ( 3, 30, 31, 300, 310), wherein the light emitted by the light source (1, 10, 11, 100, 110) is emitted from a reflective surface (2a, 20a, 21a, 22a, 200a, 210a, 2000a) of the at least one reflector (2 , 20, 21, 200, 210, 2000) to form a light distribution and - in the installed state of the light module (1) in a vehicle - over the at least one lens (3, 30, 31, 300, 310) imaged in an area in front of the vehicle becomes. According to the invention, the reflective surface (2a, 20a, 21a, 22a, 200a, 210a, 2000a) of the at least one reflector (2, 20, 21, 200, 210, 2000) is shaped such that a first focal point (F1) of the reflector (2, 20, 21, 200, 210, 2000) between the reflective surface (2a, 20a, 21a, 22a, 200a, 210a, 2000a) and the at least one lens (3, 30, 31, 300, 310) and a second focal point (F2 ) on the side of the reflector (2, 20, 21, 200, 210, 2000) remote from the lens (3, 30, 31, 300, 310), the reflective surface (2a, 20a, 21a, 22a, 200a, 210a, 2000a) of the reflector (2, 20, 21, 200, 210, 2000) is designed in such a way that the generated light image has at least one light-dark line.
    公开号:AT512711A1
    申请号:T50093/2012
    申请日:2012-03-21
    公开日:2013-10-15
    发明作者:Friedrich Dipl Ing Bauer；Dietmar Mag Kieslinger；Andreas Dipl Ing Moser；Marcel Rauch；Thomas Schlinger
    申请人:Zizala Lichtsysteme Gmbh；
    IPC主号:
    专利说明:

    Printed: 22-03-2012 E014.1 10 2012/50093 P12410
    Projection module for a motor vehicle The invention relates to a light module for a motor vehicle, comprising: at least one light source; at least one reflector; at least one lens; wherein the light emitted by the light source is formed by a reflective surface of the at least one reflector to a light distribution and - in the installed state of the light module in a vehicle - is imaged via the at least one lens in an area in front of the vehicle.
    Furthermore, the invention relates to a vehicle headlight with at least one such light module.
    The desired for headlamps of motor vehicles emission characteristics can be realized by means of different technical approaches. A) pure reflector systems with paraboloidal and free-form reflectors and b) projection systems are known in which a converging lens projects the image of a radiation diaphragm onto the area in front of the motor vehicle, that is usually onto the road. The illumination of the beam diaphragm is effected by a unit located behind it, which in addition to a light source usually still has a primary optics in the form of a reflector / mirror, light guide, etc.
    Both approaches have specific advantages and disadvantages. A common disadvantage of both approaches is that both systems require a relatively large amount of space. In approach a), especially in the nowadays almost exclusively used free-form reflectors, a lot of space is required in the direction transverse to the optical axis, while in project 1/21 21-03-2012
    Printed: 22-03-2012 P12410 E014.1 10-2012 / 50093-2- tion systems according to approach b) a lot of space in the direction of the optical axis is required.
    It is an object of the invention to provide a compact light module for a motor vehicle, without thereby impairing the photometric properties.
    This object is achieved with an aforementioned light module or with a vehicle headlamp, which comprises at least one such light module, that according to the invention the reflective surface of the at least one reflector is shaped such that a first focus of the reflector between the reflective surface and the at least a lens is located and a second focus on the side facing away from the lens of the reflector, wherein the reflective surface of the reflector is formed such that the generated light image has at least one light-dark line
    The light module according to the invention is a projection system in which light from a light source is focused by a primary optics in the form of a reflector and directed onto a (projection) lens, which projects the desired light image onto an area in front of the light module or vehicle ,
    In contrast to a classic structure in which a real intermediate image is generated by the reflector, in the present invention, the reflector generates a virtual intermediate image of the light source, which then imaged by the lens in the form of a converging lens in the area in front of the light module or vehicle becomes. For this purpose, the reflector is designed as a hyperbolic reflector or essentially has the behavior of a hyperbolic reflector.
    In a first variant of the invention, provision is made for the reflector to be formed essentially as a reflector subshell, for example as a reflector half shell, to form the at least one light-dark line in the light image, and light from a region of the boundary edge of the reflector Reflector part shell forms the light distribution on the light-dark line in the photograph.
    In this variant, the edge of the reflector (quasi the "edge trim" of a full reflector) acts as a hatch between the virtual object and the lens. Parts of a reflector, 2/21 ll-03-2012
    Printed near the lens, behave approximately like an aperture stop and therefore offer little leeway in terms of the light image, as with a change in the aperture of the image section remains unchanged, so the picture is not or only slightly changed.
    Sections of the reflector, which are farther from the lens, however, have more the character of a visual field diaphragm, a change of these ranges also changes the imaged image section and accordingly these areas can be used to form the light image.
    For example, in a reflector described in more detail below, which is designed as a half-shell and is open at the bottom, the upper regions of the reflector can be trimmed in order to reduce the intensity of the light distribution in advance, while the trimming at the lower edge of the shape the light distribution on the HD line can be varied.
    In a specific embodiment of the invention, the reflector sub-shell in the installation position of the light module is open at the bottom, so that there is a light-dark line in the overhead light.
    Furthermore, it can be provided that the boundary edge of the reflector partial shell extends substantially above a plane in which the at least one light source lies.
    In this way, the light-dark line in the photograph can be lowered, for example, by 0.57 ° (ECE control) or 0.4 ° (SAE control), as required for a law-compliant low beam distribution.
    Furthermore, it can be provided that the boundary edge is bent towards the front, to the front reflector opening towards the top. "Upwards" bent means in the first place that the boundary edge of the plane in which the light source is bent away. For example, it can be provided that the light source is inclined to a horizontal plane and the boundary edge is basically parallel to the inclined light source. The effect may occur, 3/21 21-03-2012
    Printed: 22-03-2012 P12410 E014.1 102012/50093 -4- the light distribution is bent upwards in an outer edge area of the light distribution so that light reaches an area above the legally permitted areas.
    Due to the upward curved course of the boundary edge, this effect can be counteracted, so that no light reaches unauthorized areas above the HD limit.
    In order to increase the sharpness of the image of the light-dark boundary of the reflector, it can be provided that the at least one light source has an elongated configuration, and that the light source is arranged with respect to the reflector that in the light image that of the reflective As a result, the extent of the blur is directly proportional to the size of a helical image measured across the cut-off line.
    The longitudinal axis of the light source thus runs substantially parallel to the light-dark boundary to be generated, wherein an inclination of a few degrees with respect to the light-dark boundary may well be visually meaningful.
    Thus, such a light source has a significantly longer longitudinal than transverse extent, for example, it is a light source of a plurality of light emitting diodes, e.g. in a (1 x n) arrangement in which n LEDs are arranged in a row, the light source thus has a width of one LED and a length of n LEDs. Other examples of such elongated light sources are the arc of a Xe-Brermers or the filament of an incandescent lamp.
    Likewise, in order to increase the sharpness of the image of the light-dark boundary of the reflector acting as a real aperture, it can be provided that the at least one light source has a plane light exit surface, the light exit surface facing the reflective surface of the reflector.
    Preferably, it is provided that the light-emitting surface of the at least one light source is preferably substantially planar and wherein the boundary edge of the reflector forming the cut-off line is arranged in a region, 4/21 21-03 ^ 2012
    Printed: 22-03-2012 P12410 E014.1 10 2012/50093 -5- in which the light-emitting surface of the at least one light source is shortened in perspective.
    This latter measure can be realized independently or together with the above-mentioned elongated embodiment of the light source.
    In the embodiment described above, the reflector generates one or more light-dark boundaries in the light image by the reflector acts as a real aperture, so the limita- tion channel (s) of the reflector in the light image as light-dark boundaries (or areas of maximum Brightness).
    In another variant, it is provided that the reflective surface of the reflector is designed such that light from the at least one light source, which is reflected along at least one defined curve on the reflective surface, is imaged in the light image as a region with maximum brightness.
    The generation of one or more light-dark boundaries with a reflector is based here on the effect of the so-called caustics, so that one or more, in principle arbitrarily shaped light-dark boundaries can be generated without the use of diaphragms. The at least one defined curve on the reflecting surface is displayed in the light image as a caustic line, ie as a line with maximum brightness, on one side (eg below this line) the brightness decreases, on the other side (eg above the line) no or hardly any light shown.
    Furthermore, it is provided that the reflective surface of the reflector is formed such that light from both sides of the at least one defined curve on the reflective surface in the light image on one side of the area with maximum brightness, is subsequently imaged on this area.
    With a substantially horizontal cut-off line (caustic line), the light from both reflector areas below the caustic line is correspondingly imaged and generates the light distribution below the HD line. 5/21 21-03-2012
    Printed: 22-03-2012 E014.1 10 2012/50093
    Such a reflector according to the invention can be varied flexibly, for example in order to make it smaller with regard to the installation space.
    For example, it can be provided that starting from a reflector which generates a defined light distribution with a defined brightness distribution, this reflector is substantially parallel to the defined curve on the reflecting surface, which is imaged in the light image as an area with maximum brightness, on at least one side the defined curve is cropped
    By this trimming substantially parallel to the defined curve, the shape of the light image is substantially preserved, whereby the light image becomes darker.
    In another variant, it is provided that starting from a reflector which generates a defined light distribution with a defined brightness distribution, this reflector is trimmed substantially normal to the defined curve on the reflecting surface, which is imaged in the light image as a region with maximum brightness ,
    As a result of this trimming substantially normal to the defined curve, the light image becomes smaller, but the brightness in the areas still remaining in the light image remains essentially unchanged
    Of course, it can also be provided that a designed as a real aperture reflector is provided with one or more defined curves which produce a Kaustiklinie, resulting in a variety of design options with regard to the generation of the light image.
    A light module according to the invention has the particular advantage that the overall depth of the light module is no longer determined by the sum of the focal lengths of primary optics (reflector) and secondary optics (lens), but by the difference of the two focal lengths and thus can be greatly reduced theoretically. Even if practical limitations (finite size of the light source, manufacturing tolerances, etc.) are given, and thus the reduction of the installation depth limits are set, in a light module or headlight according to the invention the construction volume can be significantly lower than in conventional, known systems. 6/21 21-03-2012 -7- PI 2410
    Since only the difference between the focal lengths of primary and secondary optics is included directly in the size, the focal length per se is a quasi-free design parameter that can be used to improve the light image.
    In a light module according to the invention, the total refractive power is aufieilt on reflector and lens. The cross-section of the lens is comparable to a classical projection system with a real intermediate image and otherwise similar characteristics, so that the required numerical aperture of the lens decreases Since chromatic aberration occurs only at refraction, but not at reflection, can be characterized by a part of the refractive power of Reflector is adopted, already achieved an improvement in color fidelity.
    Furthermore, the lens can be designed as achromatic, which is also useful for correcting chromatic aberrations. In classical projection lenses with very large numerical aperture, it is not possible to perform the lens as achromats.
    In the following the invention is discussed in more detail with reference to the drawing. In this shows
    1 is a schematic representation of a light module according to the invention,
    2 shows a first variant of a light module according to the invention in a perspective view obliquely from below,
    FIG. 3 shows the light module from FIG. 2 in a perspective view obliquely from above, FIG.
    4 shows the reflector together with the light source of a light module from FIG. 2 in a side view,
    5 the beam path in a reflector according to FIG. 4, FIG.
    6 shows a light distribution generated by a reflector from FIG. 4,
    FIG. 7 shows a modified light distribution produced with a modified reflector from FIG. 4
    8 shows a second variant of a reflector according to the invention in a view from behind,
    Printed: 22-03-2012 PI2410 E014.1 10 2012/50093 -8-
    9 the reflector from FIG. 8 in a perspective view obliquely from below, FIG.
    10 shows schematically reflection points on a reflector surface,
    11 shows images produced via the reflection points of the reflector surface from FIG. 10, FIG.
    FIG. 12 shows light distributions generated with a segment of the reflector of the light module of FIG. 8, FIG.
    13 shows a third variant of a light module according to the invention,
    14 shows a light distribution generated with a light module from FIG. 13,
    15 shows a fourth variant of a light module according to the invention,
    FIG. 16 shows a light distribution generated with a light module from FIG. 14, FIG.
    17 is a schematic view of the beam path in the case of a reflector for generating a case,
    FIG. 18 shows regions corresponding to the ray progressions from FIG. 17 in the photograph, FIG.
    FIG. 19 shows a representation of specific regions on a reflector according to FIG. 17, and FIG
    Fig. 20 to the specific areas on the reflector corresponding areas in the photograph.
    FIG. 1 schematically shows a light module 1 for a motor vehicle, comprising a light source 1, a reflector 2 and a lens 3.
    The reflective surface 2a of the reflector 2 is shaped such that a first focal point Fl of the reflector 2 is located between the reflective surface 2a and the lens 3. A second focal point F2 lies on the side of the reflector 2 facing away from the lens 3, ie behind the reflector. 8/21 21 -03t201 2 E014.1 10 2012/50093
    Printed: 22-03-2012 P12410 -9-
    The light emitted by the light source 1 is formed by the reflective surface 2a of the reflector 2 to a light distribution and - in the installed state of the light module 1 in a vehicle - is imaged via the lens 3 in an area in front of the vehicle.
    In the light module 1 according to the invention (and also in all other modules or systems shown) is a projection system in which light from a light source by a primary optics in the form of a reflector is focused and directed to a (projection) lens, which In contrast to a classical construction in which a real intermediate image is generated by the reflector, in the present invention the reflector 2 generates a virtual intermediate image of the light source, which is essentially in the rear Focal point F2 of the reflector 2 comes to rest, and this intermediate image is then imaged by the lens 3 in the form of a converging lens in the area in front of the light module or vehicle For this purpose, the reflector is formed as a hyperbolic reflector or has substantially the behavior of a hyperbolic reflector and the focal point of the lens 3 is substantially hen in the rear focal point F2 of the reflector. 2
    If one looks at a reflector 2 shown in FIG. 1 above the region indicated by the arrow above and below the region marked with the arrow below, only the regions which are shown in FIG Boundary beams drawn two beams Sl, S2 and intervening beams from the reflector 2 and are imaged by the lens 3.
    Fundamentally inventive feature in a present light module is that the reflective surface of the reflector is formed such that the generated light image has at least one light-dark line.
    As can now be clearly seen in Figure 1, it is possible for a reflector 2, for example by trimming the reflector, to give the light distribution a desired shape, in particular to provide the light distribution with at least one cut-off line, such as e.g. in the case of dipped beam distributions or partial light distribution. 9/21 21-03-2012 -10- P12410
    The edge of the reflector (quasi the "edge trim" of a full reflector) acts as a hatch between the virtual object and the lens. Parts of a reflector, which are close to the lens, behave approximately like an aperture stop and therefore offer little leeway in terms of the light image, since with a change in the aperture, the image section remains unchanged, the light image is not or only slightly changed.
    However, portions of the reflector that are farther away from the lens have more of the character of a field of view diaphragm, a change of these areas also changes the imaged image section and accordingly these areas can be used to form the light image.
    For example, in a described with reference to Figures 2 to 5 reflector, which is designed as a half-shell and open at the bottom, the upper regions of the reflector can be cropped to reduce the intensity of the light distribution in advance, while the trimming at the bottom Edge the shape of the light distribution on the HD line can be varied.
    Figures 2 to 5 show a light module 1 with a light source 10, reflector 20 with reflective surface 20a and lens 30. The proportions are purely schematic, in particular, the lens can be significantly smaller and is for example as large as the reflector.
    The reflector 20 is designed as a partial shell, in particular as a half shell, and the light source 10 radiates light into this half shell, from which the light is reflected at the reflective surface 20a.
    At the bottom, the reflector half shell 20 is surrounded by a boundary edge 20 ', 20 " limited, as shown in Figures 4 and 5. Light from the light source 10 coming from an area around this boundary edge 20 ', 20 " is projected by the lens in the light image close to the light-dark boundary, the lower boundary edge 20 ', 20 " is therefore depicted in the light image as a light-dark boundary, which limits the light image to the top.
    Printed: 22-03-2012 P12410 E014.1 10 2012/50093 -11-
    Since the boundary edge 20 ', 20 " In this example (after its trimming, as described below) lies in a horizontal plane, the light-dark boundary also essentially forms a horizontal straight line, as can be clearly seen in FIGS. 6 and 7.
    Light coming from areas of the reflective surface 20a above the boundary edge 20 ', 20 " is displayed in the light image in an area below the cut-off line and produces the apron lighting. Typically, the reflector is designed in such a way that the virtual images of the light source are not exactly at the focal point of the lens, but somewhat above or to the side of it. By "trimming"; ie variation / change of the front boundary edge 20 '" Influence on the shape or illumination of the apron can be taken.
    Furthermore, as shown, it may be provided that the boundary edge 20 ', 20 " the reflector sub-shell 20 substantially above a plane in which the light source 10 is located extends. In this way, the light-dark line in the photograph can be lowered by 0.57 ° (ECE control) or 0.4 ° (SAE control), as required for a law-compliant low-beam distribution, as shown in FIGS. 6 and 7 is shown.
    The light source 10 can, as can be clearly seen in particular in FIG. 4, be tilted slightly forward, so that the plane in which the light source is correspondingly inclined.
    If the lower boundary edge 20 " of the reflector 20 is substantially parallel to the (inclined) plane in which the light source 10 is located, as shown in Figure 4, the result is a course of the cut-off line as shown in Figure 6. As can clearly be seen in FIG. 6, the effect may occur that the light distribution is bent upwards in an outer edge area of the light distribution, so that light reaches an area above the legally permitted areas. This is due to the fact that, as shown schematically in FIG. 5, light is emitted from a region between the curves 20 'and 20 " is deflected upwards over the lens and thus projected beyond the permitted HD limit. 10 2012/50093 E014.1
    Printed: 22-03-2012 P12410 -12-
    If one cuts the reflector 20 along the curve 20 ', so that the resulting lower boundary edge is now formed by the edge 20', the result is the law-compliant light image shown in FIG. 7 without a curved HD boundary in the outer region,
    The asymmetry part lying at approximately 5 ° in FIGS. 6 and 7 is not formed by the edge 20 'but is usually produced by a reflector segment (not shown in FIGS. 2-5), based on a segment 22 as shown in FIGS. 8 and 9. generated.
    In order to increase the sharpness of the image of the light-dark boundary of the reflector, it can be provided that the at least one light source has an elongated configuration, and that the light source is arranged with respect to the reflector that in the light image that of the reflective Surface of the reflector generated helical images are substantially parallel to the cut-off in the light image, since the extent of the blur is directly proportional to the size of a helical image, measured across the cut-off line.
    The longitudinal axis of the light source thus runs substantially parallel to the light-dark boundary to be generated, wherein an inclination of a few degrees with respect to the light-dark boundary may well be visually meaningful.
    Thus, such a light source has a significantly longer longitudinal than transverse extent, for example, it is a light source of a plurality of light emitting diodes, e.g. in a (1 x n) arrangement in which n LEDs are arranged in a row, the light source thus has a width of one LED and a length of n LEDs. Other examples of such elongated light sources are the arc of a Xe torch or the filament of an incandescent lamp.
    Likewise, to increase the sharpness of the image of the light-dark boundary of the reflector acting as a real aperture, it can be provided that the at least one light source has a plane light exit surface, the light exit surface facing the reflective surface of the reflector.
    In this case, the plane of the light source and the plane in which the lower boundary edge of the reflector lies extend in a substantially parallel plane. 12/21 21-03-2012
    Printed: P12410 10 2012/50093 22-03-2012 E014.1 -13-
    For example, it may also be provided that the light-emitting surface of the light source is preferably substantially planar and wherein the boundary edge of the reflector forming the cut-off line is arranged in a region in which the light-emitting surface of the at least one light source is shortened in perspective is.
    This latter measure can be realized independently or together with the above-mentioned elongated embodiment of the light source.
    In the Ausfüihrungsform described above, the reflector generates one or more light-dark boundaries in the light image by the reflector acts as a real aperture, so the Begrenzungskantein the reflector in the photo as light-dark boundaries (or areas of maximum brightness) are mapped ,
    Figures 8 and 9 show a light module 1 with a reflector 21, light source 11 and lens 31. The reflector 21 has a reflective surface 21a and a lower boundary edge 2Γ comparable to the embodiment described above with reference to FIGS 2-5.
    With this boundary edge 21 ', a horizontal cut-off in the light image is generated. Areas of the reflector 21, which are close to the lens, lie in the photo correspondingly far laterally outside and are lowered accordingly so that the blurring of the HD line in the photograph does not bother.
    The important in the photograph parts closer to HV use the perspective shortening of the light source described above, so that there the light-dark line is sufficiently sharp.
    In one specific example, the hyperbolic reflector has a focal length of about 40 mm, the lens is an aspherical converging lens with a focal length of about 100 mm.
    As can also be seen in FIGS. 8 and 9, the reflector 21 has an additional reflector region 22 with a reflecting surface 22a. This reflector area or this reflector segment 22 illuminates a central area directly around HV in the dimming 21-03-2012
    Printed: P1241Ö 22-03-2012 E014.1 10 2012/50093 -14- light distribution. In this case, this reflector segment 22 or its reflective surface 22a is designed in such a way / that it generates a so-called caustic.
    To illustrate, Figure 10 shows schematically the reflective surface 22a, on which several reflector locations PI, P2, P3, P4, P5, P6 are highlighted. FIG. 11 shows the helical images W1-W6 generated by these reflector locations PI-P6 in the light image. If one wanders along the reflector along a line connecting the points PI - P6, then initially the helical images W1, W2, W3 move with the corresponding points PI - P3. Point P3 represents an extremal position, i. a reversal point for the spirals in the photograph, because we recognize, wander in a progression from P3 to P4 and then to P5 and P6, the helices W4, W5, W6 back to the helix Wl.
    The helical image W3 therefore touches the caustic with its outermost boundary edge W3 '(see below for further explanation), the reflector 22 or the reflector surface 22a can be trimmed in the vicinity of the point P3 without the sharpness of the cut-off change.
    If this process is repeated for several lines on the reflector as described with reference to FIGS. 10 and 11, finally the complete cut-off curve for the reflector 22 is obtained, which then assumes the shape as shown in FIGS. 8 and 9.
    FIG. 12 shows in the upper illustration a light image produced with an untrimmed reflector, the lower image in FIG. 12 shows the light image with a trimming of the reflector in the vicinity of those reflector locations which correspond to helical images on the envelope of the caustic, as with reference to FIG Figures 10 and 11 described. The trimming results in the shape of the reflector 22.
    By trimming the light-dark boundary appears better, in particular results in a better linear course of the oblique light-dark boundary, as can be clearly seen in Figure 12.
    In the case of the light module shown by way of example in FIGS. 8 and 9, the overall construction depth is approximately 70 mm. The lens was assumed to have a diameter of 100 mm, whereby the trimming can be made very flexible due to the beam path. Very small Lin- 14/21 21-03-2012 10 2012/50093 E014.1
    Printed: 22-03-2012 P12410 -15- Sections (down to minimum sizes of 40mm x 30mm) are possible without sacrificing efficiency. The example in the sketch shows a light exit area of 65mm x 45mm.
    By using a multi-line LED as a light source with separately switchable LED rows, a further implementation of dipped beam and high beam is possible only by switching the LEDs.
    By placing the LED light source such that one row is closer to the reflector, this closer LED row produces an upwardly shifted light distribution that meets the legal requirements can fulfill a Femlichtverteilung. The rear row of LEDs is thus shown lower in the focal plane of the lens than the front row.
    Optionally, the multi-cell LED light source may be rotated about an axis passing through the low beam relevant chips. In this way, the Femlichtreihe is deliberately defocused, resulting in a homogeneous appearance and greater Femlichthöhe.
    FIG. 13 shows a light module 1 with a light source 100, a reflector 200 (with reflecting surface 200a) and a lens 300, wherein the reflecting surface 200a of the reflector 200 is designed in such a way that light from the light source 100, which runs along a defined curve the reflecting surface 200a is reflected in the light image as an area of maximum brightness.
    The light source 100 comprises one or more light-emitting diodes, which are arranged vertically, the light-emitting surface of which thus lie in a vertical plane, and this light source 100 illuminates the laterally arranged reflector 200, which generates a substantially horizontal light-dark boundary, as described in US Pat Photograph is shown in Figure 14. The HD limit is generated according to the invention exclusively by a caustic.
    It is a basically hyperbolic reflector with a focal length of about 70 mm and an aspherical converging lens with a focal length of about 90 mm used, the depth of the light module 1 is about 50 mm. 21-03-2012 10 2012/50093 E014.1
    Printed: 22-03-2012 P12410 -16-
    The generation of the bright-dark boundary with a reflector is based here on the effect of the so-called caustics, so that one or more, in principle arbitrarily shaped light-dark boundaries can be generated without the use of diaphragms. The at least one defined curve on the reflecting surface is displayed in the light image as a caustic line, ie as a line with maximum brightness, on one side (eg below this line) the brightness decreases, on the other side (eg above the line) no or hardly any light shown,
    FIG. 15 shows a light module with a light source 110, in this case again comprising one or more vertically arranged LEDs, and this light source 110 illuminates a laterally arranged reflector 210 with reflective surface 210a. Via a lens 310, the light is projected into an area in front of the light module
    With this light module, a semicircular light distribution is generated with a pronounced maximum, see Figure 16. The superposition with a mirror image light distribution can be used to build a high beam. The substantially vertical light-dark boundary (see FIG. 16) is generated via the edge 210 * of the reflector 210.
    According to the invention, a basically hyperbolic reflector with, for example, a focal length of approximately 70 mm is used; in this example, furthermore, an aspherical converging lens with a focal length of approximately 90 mm is used. The depth of the light module is approximately 50 mm.
    Finally, with reference to FIGS. 17 to 20, the effect of the caustics as already briefly described in the case of a partial reflector according to FIGS. 8 and 9 with reference to FIGS. 10 to 12 and as used in a light module according to FIG comes to be described in more detail.
    FIG. 17 shows by way of example a laterally arranged reflector 2000 whose reflective surface 2000a is illuminated by a light source 1000. The reflecting surface 2000a of the reflector 2000 is designed according to the invention such that light from the light source 1000, which is reflected along the defined curve O on the reflecting surface 2000a, is imaged in the light image as a region with maximum brightness. 16/21 21-03-2012 -17- PI 2410
    In the photograph shown in Fig. 18, light from a region around the line O in Fig. 17 illuminates an area at and below the horizontal HeU-Dark boundary (see horizontal hatched area LO in Fig. 18). The line O is substantially horizontal in this example. Light originating from point 2 on surface 2000a illuminates approximately the same as " 2 " designated area in the photo.
    Light from both sides of the defined curve O on the reflective surface 2000a, ie light from above and below the curve O in the example shown, is subsequently imaged in the light image on one side of the region of maximum brightness, below this region and subsequently.
    Accordingly, at a substantially horizontal HeU-dark boundary (caustic line) as shown in Fig. 18, the light from both reflector regions is imaged below the caustic line and generates the light distribution below the HD line.
    Light from the upper half is reflected more strongly downwards than light from the lower half. If you move from an upper point "1 " on the reflecting surface 2000a via point " 2 " to point " 3 ", the top-down curved region LB in the light image is given by light rays from a region around it of " 1 " after "3" running curve. At the lowest point, rays of light meet from the point "1 " and "3".
    FIG. 19 once again shows the reflector 2000 with the reflecting surface 2000a. Shown are three different vertically extending segments "A", "B", "C", which represent the three areas "A", "B", "C". in the photograph in FIG. 20. Light from the area around the line O is imaged at the light-dark boundary, light from above and below the line O is imaged below the HeU-dark boundary. By suitable segmentation and appropriate design of the individual segments, which preferably connect continuously to each other, there is a great freedom of design with regard to the generation of a desired light image with HeU-dark boundary.
    Vienna, March 21, 2012
    权利要求:
    Claims (14)
    [1]
    Printed: 22-03-2012 E014.1 10 2012/50093 P12410 -18- P ΑΓΕΝΓΛΝ SPEECHES 1. A light module (1) for a motor vehicle, comprising: +) at least one light source (1, 10, 11, 100, 110); +) at least one reflector (2, 20, 21, 200, 210, 2000); +) at least one lens (3, 30, 31, 300, 310); wherein the light emitted from the light source (1, 10, 11, 100, 110) is shaped into a light distribution from a reflecting surface (2a, 20a, 21a, 22a, 200a, 210a, 2000a) of the at least one reflector (2, 20, 21, 200, 210, 2000) and - in the installed state of the light module (1) in a vehicle - is imaged via the at least one lens (3, 30,31, 300,310) in an area in front of the vehicle, characterized in that the reflective surface (2a, 20a, 21a , 22a, 200a, 210a, 2000a) of the at least one reflector (2, 20, 21, 200, 210, 2000) is shaped in such a way that a first focal point (F1) of the reflector (2, 20.21.200.210.2000) is formed between the reflective surface (2a , 20a, 21a, 22a, 200a, 210a, 2000a) and the at least one lens (3, 30, 31, 30, 30) and a second focal point (F2) on the side of the reflector (2, 3, 30, 31, 30, 30) , 20, 21, 200, 210, 2000), the reflective surface (2a, 20a, 21a, 22a, 200a, 210a, 2000a) of the reflector (2, 20, 21, 200, 210.2000) is designed such that the generated light image has at least one light-dark line.
    [2]
    2. Light module according to claim 1, characterized in that for forming the at least one light-dark line in the light image of the reflector (20,21) is designed substantially as a reflector-part shell, for example as a reflector half-shell, and wherein light a region of the boundary edge (20 ', 21') of the reflector sub-shell forms the Lichtvertei-limg on the light-dark line in the photograph. 18/21 21-03-2012 Printed: 22-03-2012 E014.1 10 2012/50093 P12410 -19-
    [3]
    3. Light module according to claim 2, characterized in that the reflector partial shell (20, 21) is open in the installation position of the light module.
    [4]
    4. Light module according to claim 2 or 3, characterized in that the boundary edge (20y, 21 ') of the reflector sub-shell (20,21) substantially above a plane in which the at least one light source (10,11) is located extends ,
    [5]
    5. Light module according to one of claims 2 to 4, characterized in that the boundary edge (20 ', 21') towards vome, is bent towards the front reflector opening towards the top.
    [6]
    6. Light module according to one of claims 1 to 5, characterized in that the at least one light source has an elongated configuration, and that the light source is arranged in relation to the reflector, that in the light image, the helical images generated by the reflective surface of the reflector in Essentially parallel to the cut-off line in the photograph.
    [7]
    7. Light module according to one of claims 1 to 6, characterized in that the at least one light source has a flat light exit surface.
    [8]
    8. Light module according to one of claims 1 to 7, characterized in that the light-emitting surface of the at least one light source is preferably formed substantially flat and wherein the light-dark boundary forming boundary edge of the reflector is disposed in an area in which the light-emitting surface of the at least one light source is shortened in perspective.
    [9]
    9. Light module according to one of claims 1 to 8, characterized in that the reflective surface (22a, 200a, 210a, 2000a) of the reflector (21,200,210,2000) is formed such that light from the at least one light source (11,100,110), which is reflected on at least one defined curve (O) on the reflective surface (22a, 200a, 210a, 2000a) is imaged in the light image as a region of maximum brightness.
    [10]
    10. Light module according to claim 9, characterized in that the reflective surface (22a, 200a, 210a, 2000a) of the reflector (21,200,210,2000) is designed such that 21-03-2012 Printed: 22-03-2012 P12410 E014. Light from both sides of the at least one defined curve (O) on the reflective surface (22a, 200a, 210a, 2000a) in the light image on one side of the area with maximum brightness is subsequently imaged onto this area ,
    [11]
    11. Light module according to claim 9 or 10, characterized in that, starting from a reflector (200,210,2000), which generates a defined light distribution with a defined brightness distribution, this reflector (200,210,2000) substantially parallel to the defined curve on the reflective surface (200a, 210a, 2000a), which is imaged in the light image as a region of maximum brightness, is cropped on at least one side of the defined curve.
    [12]
    12. Light module according to one of claims 9 to 11, characterized in that starting from a reflector (200,210,2000), which generates a defined light distribution with a defined brightness distribution, this reflector (200,210,2000) substantially normal to the defined curve on the reflective surface (200a, 210a, 2000a), which is imaged in the light image as a region of maximum brightness is cropped.
    [13]
    13. Light module according to one of claims 1 to 12, characterized in that the at least one lens (3,30,31,300,310) is designed as Achromat.
    [14]
    14. Vehicle headlamp with at least one light module (1) according to one of claims 1 to 13. Vienna, 21 March 2012 20/21 21-03-2012
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    同族专利:
    公开号 | 公开日
    AT512711B1|2014-08-15|
    CN104204659A|2014-12-10|
    WO2013138834A1|2013-09-26|
    IN2014MN02084A|2015-08-28|
    US9146013B2|2015-09-29|
    EP2828571A1|2015-01-28|
    MX2014011316A|2014-10-17|
    JP5881887B2|2016-03-09|
    EP2828571B1|2016-06-22|
    US20150023045A1|2015-01-22|
    JP2015511057A|2015-04-13|
    CN104204659B|2017-06-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6123440A|1997-12-05|2000-09-26|Valeo Vision|Automobile headlight and optical unit with hyperbolic reflector and plano-convex or toric convergent lens|
    JP2006156047A|2004-11-26|2006-06-15|Koito Mfg Co Ltd|Vehicular headlight|
    JP2007287521A|2006-04-18|2007-11-01|Koito Mfg Co Ltd|Vehicular lighting fixture|
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    JP2002216513A|2001-01-22|2002-08-02|Ichikoh Ind Ltd|Vehicle headlamp|
    JP2002216515A|2001-01-22|2002-08-02|Ichikoh Ind Ltd|Vehicle headlamp|
    JP4068387B2|2002-04-23|2008-03-26|株式会社小糸製作所|Light source unit|
    JP4108597B2|2003-12-24|2008-06-25|株式会社小糸製作所|Vehicle lamp unit|
    JP4339156B2|2004-03-18|2009-10-07|株式会社小糸製作所|Vehicle lamp unit|
    JP4675874B2|2006-01-20|2011-04-27|株式会社小糸製作所|Lighting fixtures for vehicles|
    JP4786420B2|2006-05-31|2011-10-05|株式会社小糸製作所|Vehicle lamp unit|
    FR2904091B1|2006-07-21|2009-03-06|Valeo Vision Sa|OPTICAL MODULE FOR MOTOR VEHICLE PROJECTOR|
    CN101625075A|2008-07-10|2010-01-13|财团法人车辆研究测试中心|LED encapsulating structure and vehicle lamp with LED encapsulating structure|
    JP5257665B2|2008-08-20|2013-08-07|スタンレー電気株式会社|Vehicle headlight unit and vehicle headlight|
    JP5574411B2|2010-03-15|2014-08-20|株式会社小糸製作所|Vehicle lamp unit|
    CN102844617B|2010-04-19|2016-03-16|皇家飞利浦电子股份有限公司|LED front lighting device|AT513816B1|2012-12-20|2015-11-15|Zizala Lichtsysteme Gmbh|Light guide unit for a lighting unit of a headlamp and lighting unit and headlamp|
    CN105814361B|2013-12-12|2017-08-25|三菱电机株式会社|Headlamp module and front lamp device|
    JP6550788B2|2015-02-23|2019-07-31|市光工業株式会社|Vehicle lighting|
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    AT517752B1|2015-09-17|2018-04-15|Zkw Group Gmbh|LIGHT MODULE FOR A MOTOR VEHICLE HEADLAMP FOR RADIATING A LARGE-RANGING LIGHT DISTRIBUTION AND LIGHTING DEVICE|
    FR3048485B1|2016-03-02|2019-04-05|Valeo Vision|IMPROVED LENS FOR LIGHTING DEVICE OF MOTOR VEHICLE|
    DE102016118152A1|2016-09-26|2018-03-29|Automotive Lighting Reutlingen Gmbh|Light module for a motor vehicle headlight|
    CN110285381A|2018-03-19|2019-09-27|深圳市绎立锐光科技开发有限公司|A kind of light source module group and automobile head light|
    FR3084728B1|2018-07-31|2021-03-19|Valeo Vision|LIGHT MODULE IMAGING THE ILLUMINATED SURFACE OF A COLLECTOR|
    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 |
    2018-11-15| MM01| Lapse because of not paying annual fees|Effective date: 20180321 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50093/2012A|AT512711B1|2012-03-21|2012-03-21|Light module for a motor vehicle and motor vehicle headlights|ATA50093/2012A| AT512711B1|2012-03-21|2012-03-21|Light module for a motor vehicle and motor vehicle headlights|
    JP2015500712A| JP5881887B2|2012-03-21|2013-03-20|Projection module for automobile|
    US14/386,578| US9146013B2|2012-03-21|2013-03-20|Projection module for a motor vehicle|
    MX2014011316A| MX2014011316A|2012-03-21|2013-03-20|Projection module for a motor vehicle.|
    PCT/AT2013/050069| WO2013138834A1|2012-03-21|2013-03-20|Projection module for a motor vehicle|
    IN2084MUN2014| IN2014MN02084A|2012-03-21|2013-03-20|
    CN201380015566.5A| CN104204659B|2012-03-21|2013-03-20|The projection module of motor vehicle|
    EP13716173.3A| EP2828571B1|2012-03-21|2013-03-20|Headlamp for vehicles with projection lens|
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