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    • 专利摘要:
    The invention relates to a microprojection light module (1) for a motor vehicle headlamp, comprising at least one light source (2) and at least one projection device (3), which emits the light emerging from the at least one light source (2) in an area in front of the motor vehicle in the form of at least one light distribution, wherein the projection device (3) comprises an entrance optics (30), which consists of one, two or more micro entrance optics (31), which are preferably arranged in an array, and an exit optics (40), which consists of one, two or more micro-exit optics (41) are arranged, which are preferably arranged in an array, each micro-entry optics (31) is associated with exactly one micro-exit optics (41), wherein the micro-entry optics (31) formed and / or the micro-entry optics (31) and the micro-exit optics (41) are arranged to each other such that substantially all of a Mi precisely entering the associated micro exit optics (41), and wherein the light preformed by the micro entrance optics (31) from the micro exit optics (41) into an area in front of the motor vehicle as at least a light distribution (LV1 - LV5; GLV) is shown, wherein between the entrance optics (30) and the exit optics (40) a first diaphragm device (50) is arranged, wherein between the entrance optics (30) and the exit optics (40) at least one second diaphragm device (60, 70) is.
    公开号:AT517885A1
    申请号:T50905/2015
    申请日:2015-10-23
    公开日:2017-05-15
    发明作者:Mandl Bernhard；Moser Andreas；Jackl Christian
    申请人:Zkw Group Gmbh；
    IPC主号:
    专利说明:

    Microprojection light module for a motor vehicle headlight for generating aberration-free light distributions
    The invention relates to a microprojection light module for a
    Motor vehicle headlamp, comprising at least one light source and at least one projection device, which images the light emerging from the at least one light source in an area in front of the motor vehicle in the form of at least one light distribution, the projection device comprises an entrance optics, which one, two or more micro-entry optics which are preferably arranged in an array, an exit optics having one, two or more micro-exit optics, which are preferably arranged in an array, each micro-entry optics is assigned exactly one micro-exit optics, wherein the micro-entry optics formed such and / or the micro-entry optics and the micro-exit optics are arranged to each other such that substantially all the light emerging from a micro-entry optics light enters exactly only in the associated micro-exit optics, and wherein the of the micro-entry optics vo R shaped light from the micro-exit optics is imaged in an area in front of the motor vehicle as at least one light distribution, wherein between the entrance optics and the exit optics, a first aperture device is arranged.
    Furthermore, the invention relates to a lighting device with at least one such microprojection light module.
    Moreover, the invention relates to a vehicle headlamp with at least one such lighting device.
    Microprojection light modules of the above type are known in the art. Applicant's AT 514967 Bl discloses a microprojection light module for a vehicle headlamp with a diaphragm device for generating a light distribution of a predetermined type. This results in a "crosstalk" (see Fig. 2b of the present application) in the projection system and aberrations (due to, for example, non-paraxial rays, or chromatic aberration (color longitudinal and / or chromatic aberration)) by the projection system. that the resulting light distribution, which is projected as a light image in front of the microprojection light module is not aberration-free, with a "aberration-free light distribution" in the context of the present invention, a light distribution without aberration of the type mentioned in this application and without stray light due to crosstalk understood becomes.
    It is therefore an object of the invention to further develop an initially mentioned microprojection light module for a motor vehicle headlight in such a way that aberrations free of light of a certain type, for example with a light-dark boundary, can be generated.
    In this context, "a specific type" of light distribution is understood to mean a light distribution generated according to relevant standards, for example a light distribution according to UN / ECE regulations in the European Union states, in particular regulations 123 and 48, or relevant standards in the other regions of the world.
    This object is achieved with a microprojection light module mentioned in the introduction in that, according to the invention, at least one second diaphragm device is arranged between the inlet optics and the exit optics.
    It may be provided that the second diaphragm device is arranged between the first diaphragm device and the outlet optics.
    In particular, it may be advantageous if a micro-entry optics and one of the micro-exit optics associated micro-exit optics form a micro-optical system, which micro-optical system has at least one micro-optic focus.
    In this case, it can be provided that each micro-entry optics focuses the light passing through them into the at least one micro-optical focal point.
    Moreover, it may be advantageous if a micro-optic focal point of each micro-entry optics lies in the light exit direction in front of the associated micro-exit optics.
    Furthermore, it can be provided that the micro-entry optics focus the light passing through them in the vertical direction in each case onto the micro-optic focus located in front of the micro-exit optics.
    In a preferred embodiment, it may be provided that the micro-exit optics each have a coincident with the micro-optical focus of the associated micro-entry optics focal point.
    Light is thus focused into the focal point of the micro-optical system and then collimated accordingly after passing through the micro-exit optics in the vertical direction and projected into an area in front of the vehicle.
    In addition, it can be advantageously provided that each micro-optical system expands the light passing through them in the horizontal direction.
    In this case, each micro-optics system focuses the transmitted light in the vertical direction onto a micro-optic focal point, which is preferably behind the micro-entry optics and in front of the micro-exit optics. This light further passes through the micro-exit optics and is now focused in the horizontal direction into a focal point, which is preferably behind the micro-exit optics.
    The terms refer to "before" and "behind" in the main propagation direction of the light emitted by the microprojection light module.
    It may be expedient if the micro-entry optics are designed as collection optics.
    Furthermore, it can be provided that the micro-entry optics are designed as free-form optics.
    It is expedient if the micro-exit optics are designed as projection optics.
    In addition, it can be provided that the micro-exit optics are formed as spherical or aspherical lenses.
    In addition, it may be advantageous if the micro-exit optics are formed as free-form lenses.
    In a specific, particularly preferred embodiment of the invention, it is provided that the mutually facing interfaces of mutually associated micro-entry optics and micro-exit optics are formed congruent to each other and preferably also arranged congruent to each other. "Congruent trained" here means nothing else than that the interfaces of mutually associated micro-optics have the same shape of the base, arranged in principle any spatial arrangement. "Congruent" means that these bases are additionally arranged so that they would be congruent with each other when moving normal to one of the bases.
    It is particularly advantageous for the optical axes to run parallel to one another from one another to form ordered micro-entry optics and micro-exit optics, preferably to coincide. In this way, the light image of each individual micro-optics system is imaged particularly precisely with regard to its position, so that when the individual light images are superposed, a desired overall light distribution, e.g. a low-beam distribution, this can optimally generate optically.
    The bases of the optics may be e.g. be hexagonal, rectangular or preferably square.
    With regard to the quality of the light image, it may be advantageous if the first diaphragm device lies in a plane which is spanned by the micro-optic focal points.
    It can be provided that the first diaphragm device for at least one pair of mutually associated micro-entry and micro-exit optics, preferably for several pairs and in particular for all pairs has a diaphragm with at least one, for example, exactly one optically effective diaphragm edge.
    With regard to the production effort, it may be expedient if all diaphragms of the first diaphragm device have identical diaphragm edges.
    With regard to the light image design, it can be provided that at least two diaphragms of the first diaphragm device have differently shaped diaphragm edges.
    In order to specifically correct the aberrations, it may be advantageous if the second diaphragm device for at least one pair of associated micro-entry and micro-exit optics, preferably for several pairs and in particular for all pairs, a diaphragm with at least one, for example has exactly one optically effective diaphragm edge.
    In a specific embodiment, it may be provided that all diaphragms of the second diaphragm device have identical diaphragm edges.
    Moreover, it is particularly advantageous if at least two diaphragms of the second diaphragm device have differently designed diaphragm edges.
    With regard to the aberrations resulting from the field curvature and distortion of the projection device, it may be advantageous if at least one, preferably two, of the optically effective diaphragm edges has a gable-shaped course.
    In this case, it may be advantageous for the gable-shaped course of the at least one of the optically effective diaphragm edges to be directed outwards with respect to the diaphragm aperture. In the case of a straight-line course of gable edges, the aperture is formed, mathematically speaking, as a two-dimensional substantially convex set. The gable-shaped course may, for example, have the shape of a triangle or a tail gable, or be rounded or trapezoidal.
    Moreover, it may be advantageous if, with regard to the vertical direction, a lower and / or an upper optically effective diaphragm edge of the diaphragm has / has two or more curved and / or rectilinear segments, in particular triangular or trapezoidal or cylindrical or circular are trained / is.
    It must be noted at this point that it can be within the meaning of the invention if the lower and / or upper optically effective diaphragm edge is formed gable-shaped from the optical axis to the outside of the diaphragm. This may be a steep or flat or normal-tipped shape of the summit.
    With regard to the reduction of crosstalk and aberrations, it may be advantageous if the second diaphragm device is arranged with respect to the first diaphragm device such that the diaphragms of the second diaphragm device with respect to the diaphragms of the first diaphragm device vertical, i. parallel to a vertical axis, are offset.
    With regard to the adaptation of the aperture of micro-optical systems, it is advantageous if the first diaphragm device and the second diaphragm device are spaced apart. In this case, the second diaphragm device carries the function of an aperture diaphragm, with which aperture diaphragm the aberrations can be corrected.
    Basically, a projection device, as described above, a plurality of micro-optical systems, ie pairs consisting of each of a micro-entry optics and a micro-exit optics, on. In the simplest embodiment without aperture devices, all micro-optics systems produce the same light distribution, which comprises (sub) light distributions in total, e.g. form a high beam distribution. Here, it is assumed for the sake of simplicity that with exactly one light module a complete light distribution is generated. In practice, however, it can also be provided that two or more light modules according to the invention are used to generate the total light distribution. This can e.g. be useful if, for example, for space reasons, a division of the components to different positions in the headlight is necessary.
    To produce a dimmed light distribution, such as a low-beam light distribution, which has a bright-dark boundary in a known manner, it can now be provided that each micro-optics system more or less identical diaphragms are assigned in the beam path, so that all micro-optical systems with a light distribution create a cut-off line. The superimposition of all light distributions then gives as total light distribution the dimmed light distribution.
    In this case as well as in all others, the diaphragms can be designed as individual diaphragms (eg in the form of an opaque layer, for example a vapor-deposited layer, etc.) which "form" the first diaphragm device, but it can also be a diaphragm device Component, such as a flat foil, etc., in which aperture device component corresponding apertures for the passage of light are provided, resulting in the abovementioned aberration explained below, which can now be eliminated by inserting the second aperture stop device.
    In addition, it can also be provided that different diaphragms are provided, ie, that one or more micro-optics systems is assigned a first diaphragm of the first diaphragm device and a second diaphragm of the second diaphragm device, one or more other micro-optical systems at least one each , iris of the first iris device (or no iris) identical or different from the first iris, and another iris device (or no iris) identical to the second iris or different from the second iris, etc. so that different micro-optical systems form different aberration-free light distributions. By selectively activating individual micro-optics systems, for which it is necessary, however, that they are assigned their own light sources which can be controlled separately, at least in groups, individual, different light distributions can be generated in this way, which can also be operated in superimposition.
    Furthermore, it can be provided that the first diaphragm device and the second diaphragm device are identical.
    It may be expedient if the second diaphragm device is arranged mirrored with respect to the first diaphragm device with respect to a horizontal plane.
    However, it can also be provided that the first diaphragm device is integrally formed with the second diaphragm device.
    It may be advantageous if the projection device consisting of inlet optics and exit optics, and of the first diaphragm device and of the second diaphragm device, is integrally formed.
    In addition, it can be provided that the projection device consisting of inlet optics and exit optics is formed from two separate components.
    In addition, it can be provided that the first diaphragm device is arranged on the exit optics facing interface of the entrance optics.
    Furthermore, it is advantageous if the first diaphragm device is designed as a component that is formed separately from the inlet optics, the outlet optics and the second diaphragm device.
    In an advantageous embodiment, it is provided that the second diaphragm device is arranged on the interface of the exit optics facing the entrance optics.
    In this case, it can be provided that the second diaphragm device is constructed as a component formed separately from the inlet optics, the exit optics and the first diaphragm device.
    Furthermore, it can be provided that the at least one light source comprises at least one semiconductor light source, e.g. comprises at least one light emitting diode and / or at least one laser diode.
    It is expedient if at least one attachment optical device is arranged between the at least one light source and the at least one projection device, into which at least one attachment optical device irradiates the light emitted by at least one light source, and which attachment optical device is designed such that the light emerging from it is directed substantially parallel.
    It may be expedient if the attachment optical device is designed as a collimator.
    It is particularly advantageous if the light source has at least one semiconductor-based light source which comprises at least one semiconductor-based light source one, two or more LEDs and / or laser diodes, wherein the one, two or more LEDs and / or laser diodes of the at least one semiconductor-based light source independently can be controlled from each other.
    The term "controllable" is understood here primarily to mean switching on and off, in addition to which the dimming of the one, two or more LEDs and / or laser diodes of the at least one semiconductor-based light source can also be understood.
    It may be advantageous if, with two or more light sources, the light sources are independently controllable.
    By "independently of each other" is to be understood that actually all light sources can be controlled independently of each other, or that the light sources can be controlled in groups independently.
    In one embodiment of the invention, it is provided that each micro-optical system consisting of a micro-entry optics and a micro-exit optics is associated with exactly one light source, which preferably comprises exactly one light-emitting diode or exactly one laser diode.
    It may also be provided that two or more light source groups are provided, each light source group comprising at least one light source, and wherein the light sources of a light source group emit light of the same color, and wherein the light sources of different light source groups light different color and each light source group illuminate a region of the at least one projection device assigned specifically to this light source group, and wherein the different regions are of identical design or are designed to generate identical light distributions.
    It should be noted that the position of the first diaphragm device and / or the second diaphragm device and / or the shape of the entrance optics (for example, the thickness of the respective entrance optics and / or the curvatures of the entrance optics micro-entry optics) to the respective light source group should be adjusted. As mentioned above, the first aperture device is preferably arranged in the focal surface of the projection device. Due to the dispersion (refractive index dependence on the wavelength of light) of the material making up the entrance and exit optics, the positions of the foci of the micro-optics systems are different for each color (green, red, or blue). As a result, the focal surfaces of the e.g. red, green or blue light irradiated parts of the same projection device or the irradiated projection devices not necessarily together. This in turn can lead to chromatic aberrations (color longitudinal and / or transverse chromatic aberration) in the light image (in the emitted light distribution) if the position of the first diaphragm device and possibly also of the second diaphragm device is adapted to the color of the light emitted by the light sources.
    It is expedient here if three light source groups are provided, wherein preferably a light source group emits red light, a light source group emits green light and a light source group emits blue light.
    The objects set forth above are furthermore achieved with a lighting device for a vehicle headlight, which comprises at least one, preferably two or more microprojection light modules as described above.
    In this case, it may be advantageous if two or more groups of microprojection light modules are provided, and wherein each group comprises one, two or more microprojection light modules, microprojection light modules of one group producing the same light distribution, and microprojection light modules of different groups being different Generate light distributions.
    Another advantage arises when the light sources of each group of microprojection light modules are controllable independently of the light sources of the other groups.
    It can also be provided that the projection devices of microprojection light modules of a group form a common component.
    Furthermore, it can be provided that the projection devices of all microprojection light modules form a common component.
    With regard to the production, it may be particularly favorable if the one or more common components is / are formed in the form of a film.
    It may be expedient to provide two or more groups for generating different light distribution, each group forming a different light distribution selected from one of the following light distributions: *) cornering light distribution; *) City light distribution; *) Highway light distribution; *) Motorway light distribution; *) Light distribution for additional light for motorway light; *) Cornering light distribution; *) Low beam light distribution; *) Low beam apron light distribution; *) Light distribution for asymmetrical low beam in the far field; *) Light distribution for asymmetric low beam in the far field in the bend lighting mode; *) High beam light distribution; *) Glare-free high beam light distribution.
    Not only only, but especially with the use of laser light sources, it has also been found to be favorable when the lighting device comprises two or more light modules, each light module having at least one light source group, each light source group comprising at least one light source and wherein light sources of a light source group emit light of the same color, and wherein at least two light source groups are provided which emit light of different color, and wherein each light source group illuminates a region of the at least one projection device of its light module specifically assigned to these light source groups , and wherein the different regions are identically formed or designed to generate identical light distributions.
    A particularly advantageous embodiment results when the illumination device comprises two or more microprojection light modules, each microprojection light module having at least one light source group, each light source group comprising at least one light source, and light sources of a light source group light of the same color and wherein at least two light source groups are provided, which emit light of different color, and wherein each light source group illuminates an area of the at least one projection device of its microprojection light module allocated specifically to said light source groups, and wherein the different regions are identically formed resp . Are designed to generate identical light distributions.
    It is particularly favorable for the generation of white light when three groups of light source groups are provided, wherein preferably one group of light source groups emits red light, one group of light source groups green light and one group of light source groups blue light , and wherein each group of light source groups comprises at least one light source group.
    An illumination device according to the invention can be part of a headlight, that is, combined with one or more light modules of a different design to form a headlight, or the vehicle headlight is formed by the illumination device.
    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 microprojection light module according to the invention in an exploded view,
    2a is a schematic representation of a micro-optical system of a microprojection light module according to the invention in a perspective view and a vertical section plane,
    2b shows a section through the micro-optical system of Figure 2a along the plane A-A,
    2c shows a micro-optical system of FIG. 2a, with a horizontal sectional plane,
    FIG. 2d shows a section through the micro-optical system of FIG. 2c along the plane B-B, FIG.
    3 is a schematic representation of a first aperture device according to the prior art with one, two or more apertures,
    3a is a schematic representation of a total light distribution with aberrations, generated with a light module with the first diaphragm device according to the prior art of Figure 3,
    3b shows the partial light distributions with aberrations produced with the individual diaphragms of the first diaphragm device according to the prior art from FIG. 3, which together form the total light distribution from FIG. 3a, FIG.
    4 shows a first variant of a second diaphragm device according to the invention,
    4a shows the partial light distributions without aberrations, generated with the individual diaphragms of the second diaphragm device according to the invention from FIG. 4, FIG.
    5 shows a second variant of a second diaphragm device according to the invention,
    5a shows the partial light distributions without aberrations, generated with the individual diaphragms of the second diaphragm device according to the invention from FIG. 5, FIG.
    6a is a schematic detail of a projection device of a light module according to the invention in one-piece design,
    6b is a schematic detail of a projection device of a light module according to the invention in two-part design,
    6c shows a schematic detail of a projection device of a light module according to the invention in four-part design,
    FIG. 7 shows a schematic illustration of a lighting apparatus constructed from a plurality of microprojection light modules according to the invention, FIG.
    8a-8c different variants of micro-optical systems,
    FIGS. 9a and 9b show a schematic arrangement for producing a total white light distribution using light sources of different colors, and FIGS
    FIGS. 10 to 15 show different embodiments of the diaphragms of the second diaphragm device.
    FIG. 1 shows schematically a microprojection light module 1 according to the invention for a motor vehicle headlight. The microprojection light module 1 a light source 2 and a projection device 3, which images the light emerging from the light source 2 in an area in front of the motor vehicle in the form of at least one light distribution. The illustrated coordinates indicate the light exit direction Z, the horizontal direction H, which is normal to Z and normal to the vertical direction V.
    In this case, the terms "horizontal" and "vertical" refer to the state of the microprojection light module installed in a vehicle headlight installed in the vehicle.
    The light source 2 is preferably at least one semiconductor-based light source which has, for example, one, two or more LEDs and / or laser diodes.
    The light source 2 radiates its light into an optical attachment 4, for example a collimator, which directs the light of the light source 2 substantially parallel before it impinges on the projection device 3.
    As shown in FIG. 1, this projection device 3 comprises an entry optics 30, which consists of an array of micro entrance optics 31, and an exit optics 40, which consists of an array of micro exit optics 41, wherein each micro entrance optics 31 is exactly one Micro exit optics 41 is assigned. In addition, the projection device comprises a first diaphragm device 50 and a second diaphragm device 60.
    The micro-entrance optics 31 in a light module according to the invention according to Figure 1 are designed and / or the micro-entry optics 31 and the micro-exit optics 41 are arranged to each other such that the light emerging from a micro-entrance optics 31 exactly in the associated Micro exit optics 41 occurs, and wherein the pre-formed by the micro-entrance optics 31 light from the micro-exit optics 41 in an area in front of the motor vehicle as at least one light distribution LV1 - LV5; GLV is mapped.
    Furthermore, as can be generally deduced from the figures, a first diaphragm device 50 and a second diaphragm device 60 are arranged between the entrance optics 30 and the exit optics 40. As will be discussed in more detail below, the first aperture device 50 can be trimmed to control the luminous flux passing through the projection device in order to be able to generate one or more light distributions with defined shapes, for example with one or more light-dark boundaries. By the second diaphragm device 60, the light distribution generated using the diaphragm device 50 can be largely corrected. For example, at a for generating a Abblendlichtverteilung arranged first aperture device 50 (see for example Fig. 3), the second aperture device 60, 70, 80 (Fig. 4, 5,13 to 15) serves, inter alia, the color errors (color longitudinal and / or lateral chromatic aberration ) to reduce in the light image, which errors can lead to a discoloration of the cut-off line and are perceived by the human eye as unpleasant and disturbing.
    For the sake of completeness, it should be noted here that the illustration in FIG. 1 with substantially brighter first diaphragm device 50 and essentially dark second diaphragm device 60 does not make any statements about the design of the diaphragm devices 50, 60. The illustration is purely schematic and is intended only to show the presence of a first aperture device 50 and a second aperture device 60 and their approximate position.
    The entry optics 30 is a single component which is formed by the micro entrance optics 31. The micro-entrance optics 31 lie directly, preferably without distance to each other and form an array as mentioned above and shown in the figure 1.
    Likewise, the exit optics 40 is a single component which is formed by the micro exit optics 41. The micro-exit optics 41 are directly, preferably without spacing together and form an array as mentioned above and shown in the figure 1.
    In addition, as will be explained below, the entry optics and the exit optics, if appropriate, can be formed integrally with one aperture device each. For example, the entry optics with the first diaphragm device and the exit optics with the second diaphragm device may be integrally formed.
    Figures 2a and 2c show a micro-optical system consisting of a micro-entry optics 31 and an associated micro-exit optics 41, which are as described above and / or arranged such that light from the micro-entry optics 31 shown exclusively in the associated micro Exit optics 41 passes. In this case, the optical axis 310 of the micro entrance optics 31 coincides with the optical axis 410 of the micro exit optics 41. Furthermore, FIG. 2a shows part of the first diaphragm device 50 and the second diaphragm device 60 in the region between the two micro-optics 31, 41.
    Looking at the micro-optical system of FIGS. 2 b and 2 d, it can be seen in FIG. 2 b that the micro-entry optics 31 focuses the light passing through them in a vertical direction into a micro-optic focal point Fl, wherein the micro-optics Focal point Fl preferably coincides with the focal point of the micro-optic system 31 and the micro-exit optics 41 existing micro-optical system. FIG. 2b thus shows
    Light rays, which lie in a vertical plane (namely, the plane A-A of Figure 2a) and the projection of light rays in this plane A-A.
    The light rays emerging in parallel from the (not shown here) attachment optics are thus focused by the micro-entry optics 31 into the micro-optic focal point Fl, which, viewed in the light exit direction, lies in front of the associated micro exit optics 41.
    As already mentioned, for the sake of completeness it should again be noted here that for the sake of simpler formulation here and generally in the context of this entire disclosure elsewhere, a focus is "in focus." In fact, ie in reality however, the light rays are not focused in a single focal point but are imaged into a focal plane containing said focal point, this focal plane may be a focal plane, but typically this focal plane is due to aberrations and higher order corrections Corrections in the consideration of the light propagation of light beams, which form a large angle to the optical axis, are to be considered in addition to the paraxial approximation, not even but may also be curved "formed", ie the light rays are imaged into a curved surface containing the focal point. In this case, the curvature of the burning surface leads to errors in the generated light distribution (see FIGS. 3 a and 3b).
    Each micro-optics system thus has a focal point Fl, which lies between the entrance optics and the exit optics, and in which preferably the light of the associated micro-entry optics is focused.
    In addition, the micro-exit optics 41 has a focal point, which focal point coincides with the micro-optic focal point Fl and with the focal point of the micro-exit optics 41 associated micro-entry optics 31. Light is thus focused in the focal point Fl and then collimated in the vertical direction as it passes through the associated micro-exit optics 41 and projected into an area in front of the vehicle, as shown schematically in Figure 2b.
    Figure 2d further shows the behavior in the horizontal direction, i. rays are considered which lie in a horizontal plane, for instance in the plane B-B from FIG. 2c, or the projection of rays into this plane. As can be seen in FIG. 2d, each micro-optical system consisting of micro-entry optics 31 and micro-exit optics 41 expands the light passing through them in the horizontal direction. For this purpose, each micro-optics system focuses the light passing through this micro-optical system in the horizontal direction onto a focal point F2 which lies behind (in the main emission direction) of the micro-exit optics 41. In the horizontal direction, the light is thus scattered to achieve the desired width of the partial light distributions of the individual micro-optical systems.
    It should be noted at this point once again that idealized optical systems are described here; In practice, both the first optics (micro-entry optics) and the second optics (micro-exit optics) of a micro-optics system are often designed as free-form, resulting in an image as described above in a focal surface. In addition, at least a portion SL of the light will emerge from a micro-optical system between the micro-entry optics 31 and the associated micro-exit optics and scattered into a micro-optics system adjacent to the one micro-optics system (Figure 2b). So there is a so-called crosstalk between the micro-optical systems, whereby a faulty light distribution (see 3a, 3b) is generated. An essential feature of the above-described micro-optical systems that they expand in the horizontal light passing through them.
    The micro-entrance optics 31 are preferably designed as collecting optics, which collect light in the vertical and / or horizontal direction. The micro-entrance optics 31 may be e.g. be designed as a free-form optics.
    The use of the micro-entry optics, for example lenses, which collect in the vertical direction V and / or in the horizontal direction H depends on the particular application of the microprojection light module. Thus, for example, for the production of a broad light distribution (eg of a low-beam light distribution), micro-entrance optics 31 can be used which collect the light in the vertical direction V (FIG. 2b) and leave it substantially defocused in the horizontal direction H (FIG. 2d) or even expand. In this case, the micro-exit optics 41 can be arranged so that their focal points coincide in the vertical direction V with the focal point Fl of the corresponding micro-entry optics. This can lead to the light emerging from the micro-optical systems being focused in the horizontal direction H into focal point F2, this being the case
    Foci F2 lie substantially in a horizontal plane. By arranging the foci F2 lying substantially in a horizontal plane at a small distance from the micro-exit optics, each micro-optics system expands the light beam passing through this micro-optic system, as can be seen for example in FIG. 2d. Here, by "small distance" a size in the millimeter to centimeter range, for example in a range of 1 mm to 10 cm, understood, which is performed as "low" compared to the distance in which a photometric measurement in automotive construction (A light distribution emitted by a motor vehicle headlight is usually measured at a measuring screen set up at a distance of 25 meters transversely to the main emission direction). To produce a less broad light distribution, for example a high-beam partial distribution, it is possible to use both micro-entrance optics collecting in the horizontal and in the vertical direction. In this case, each micro-entry optics would focus the light both in the vertical and in the horizontal direction to a focal point, which focus lies in front of the micro-exit optics. As a result, a widening of the light beam passing through the micro-optical system in the horizontal direction can be avoided and an essentially (in a projection on the above-mentioned screen) oval-shaped light distribution, which can be used, for example, to generate a high beam distribution generated.
    The micro-exit optics 41 are usually formed as projection optics, e.g. as spherical or aspherical lenses. It can also be provided that the micro-exit optics 41 are formed as free-form lenses.
    At this point, reference should briefly be made to Figures 8a to 8c: above and in the further description, it is assumed that each micro-entry optics 31 and each micro-exit optics 41 are each formed from a single lens. However, it may also be provided that either the micro-entry optics 31 and / or the micro-exit optics 41 themselves each consist of one, two or more of "optics" or optical elements each of these "micro-micro-optics" "a micro-optic must have the same focal plane. For example, one or both of the micro-optics may be Fresnel lenses having different optically effective regions. Any of the micro-optic (micro-optic) optics of micro-entry optics may or may not emit light into each micro-exit optic.
    FIG. 8a shows an example in which in a micro-optics system the micro-entry optics 31 is designed as a Fresnel lens and the micro-exit optics 41 as a "conventional" lens.
    FIG. 8b shows an example in which the micro-entry optics 31 is designed as a "conventional" lens and the micro-exit optics 41 as a Fresnel lens.
    FIG. 8c shows an example in which the micro-entry optics are designed as a "conventional" lens and the micro-exit optics as an array of micro-micro-lenses.
    Figures 8a-8c show only some conceivable variants, combinations or other subdivisions of the micro-optics and the diaphragm devices. It is important that the second diaphragm device 60, 70 is arranged in the light propagation direction between the first diaphragm device 50 and the micro-exit lens 41 and acts as an aperture stop. The position of the second diaphragm device 60, 70 is therefore not freely selectable in the beam path. The first aperture device 50 is a luminous field / field stop. It is advantageous in terms of the quality of the light image to arrange the first diaphragm device in the focal plane or in the intermediate image plane of the micro-optical system.
    Furthermore, as can be seen from FIGS. 2 a and 2 c, the mutually facing boundary surfaces 31 ', 41' of mutually associated micro-entry optics 31 and micro-exit optics 41 are formed congruent to one another and preferably also arranged congruent to one another.
    In addition, it is expedient if the boundary surfaces 31 ', 41' are planar.
    In the example shown, the interfaces 31 ', 41' are square, other shapes are rectangular or hexagonal.
    The optical axes 310, 410 (FIGS. 2 b, 2 d) of associated micro-entry optics 31 and micro-exit optics 41 run parallel to one another in a favorable manner, and it is particularly advantageous if the optical axes 310, 410 coincide.
    The first aperture device 50 lies in a plane which is stretched by the micro-optic focal points F1. In this case, the diaphragm device 50 preferably has a diaphragm for each micro-optical system (see FIGS. 2a, 2c), wherein the diaphragm has one or more optically effective diaphragm edges.
    The second diaphragm device 60 is located between the first diaphragm device 50 and the exit optics 40. The second diaphragm device 60 preferably has a diaphragm for each microoptical system (see FIGS. 2a, 2c), wherein the diaphragm has one or more optically effective diaphragm edges and this is the stray light SL (Fig. 2b) does not let through.
    Figures 2a, 2c show a micro-optical system, which is associated with a first aperture 52 with an optically effective aperture edge 52 'and a second aperture 62 with a further optically effective edge 62'. The light passing through this system is first trimmed according to the first diaphragm edge 52 'and the diaphragm edge 52' is imaged in the light image as a light-dark boundary. Furthermore, the light is trimmed according to the second diaphragm edge 62 'in such a way that there is no crosstalk between the individual micro-optical systems and the aberrations of the light distribution GLV (see FIGS. 3a, 3b) caused by the curvature of the focal surface are eliminated.
    The first aperture device 50 and the second aperture device 60 have an aperture for at least a pair of mating micro-entry and exit optics 31, 41. However, the first diaphragm device 50 and the second diaphragm device 60 preferably have a diaphragm 51, 52, 53, 54, 55 or 61, 62, 63, 64, 65, respectively, for at least one pair, and in particular for all pairs an optically effective diaphragm edge 51 ', 52', 53 ', 54', 55 'and 61', 62 ', 63', 64 ', 65'.
    The first aperture device 50 known from the prior art is shown schematically in FIG. FIG. 3 shows the first diaphragm device 50 in a front view, with the first diaphragm device 50 having five different types of diaphragms 51-55. Each of these diaphragms 51-55 consists of a light-impermeable material 51 "-55", which has exactly one (as shown) or several (not shown) translucent openings 51 '"- 55'", through which light can pass. The diaphragm edges 51 ', 52', 53 ', 54', 55 'of the diaphragms are imaged in the respective partial light image as overhead light-dark boundaries which delimit the light image upwards.
    Each of these diaphragms is assigned exactly to a micro-optics system, and if all the micro-optics systems are irradiated with light, the result is a total light distribution GLV, as shown schematically in FIG. 3a, as a superposition of all partial light distributions. The total light distribution GLV shown in the example shown is a low beam distribution with an asymmetrical cut-off line.
    FIG. 3b shows in each case one of the diaphragms 51-55 and, to the left of the diaphragm, schematically the respective partial light distribution LV1-LV5 thus produced.
    It is clear that the aberrations and the crosstalk between adjacent micro-optics systems imaging error areas XI, X2, X3, X4, X5, X6 in the partial light distributions LV2, LV4, LV5 arise, their superposition to the emergence of aberrations large areas Yl, Y2, Y3 in the total light distribution GLV.
    FIG. 4 shows a second diaphragm device 60 according to the invention with the aid of which aberrations are eliminated. In this case, the second diaphragm device 60 is shown in a view from the front. There are five different types of aperture 61 to 65 can be seen, the second aperture device 60 has. Each of these apertures 61 to 65 consists of a light-impermeable material 61 ", 62", 63 ", 64", 65 ", which has exactly one (as shown) or several (not shown) translucent apertures 61 '", 62' ", 63 '", 64'", 65 '", through which light can pass. Through the apertures, the already cropped with the first aperture device image continues to be trimmed so that no aberration portions XI to X6, and consequently no aberration large areas Yl, Y2 are more present in the generated partial light distributions and light distributions. This is achieved by shaping the diaphragm edges. In this case, a gable-shaped shape of the lower diaphragm edge 62 ', 63', 64 ', 65' of the diaphragms which ascends generally at an angle from the center to the outside has proved to be particularly advantageous. These are in the respective partial photo as overhead
    Light-dark boundaries, which limits the light image towards the top, shown. The opaque areas 61 "to 65" are designed and arranged such that no crosstalk between the micro-optical systems takes place, i. no stray light SL (part SL of the light in FIG. 2d) passes from a micro-optical system into the adjacent micro-optical system. As a result, the aberration Y2 is reduced or eliminated.
    FIG. 4a shows in each case one of the shutters 61-65 and, to the left of the diaphragm, the respective partial light distribution LV1 '- LV5' generated therewith without aberrations XI-X6, Y1, Y2.
    5 shows a further exemplary embodiment of the second diaphragm device 70 according to the invention. Compared with the second diaphragm device 60 of FIGS. 4 and 4a, at least part of the diaphragms 73a to 73d and 75a to 75f of the second diaphragm device 70 of FIG. 5 each have a translucent aperture 73a '' to 73d '"and 75a'" to 75f '"on. In this case, the diaphragms 73a to 73d and 75a to 75f are arranged such that the light passing through their openings 73a '' to 73d '' and 75a '' to 75f '' forms partial light distributions LV3 'and LV5' '(FIG. 5a) , wherein the partial light distributions LV3 "and LV5" to an area in the middle of the total light distribution, ie around the desired maximum of the illuminance of the radiated light distribution contribute in which area, for example, a greater illuminance is needed.
    The embodiment of the second diaphragm device 70 shown in FIG. 5 is particularly advantageous because, e.g. The use of the second diaphragm device 60 of FIG. 4 would lead to the fact that the majority of the luminous flux would be shaded and therefore, for example, legally stipulated luminous flux values in the HV point would not be achieved. The reason for this is that the light necessary for the generation of the partial light distributions LV3 to LV5 is strongly focused in the focal plane or intermediate image plane of the projection device. The further beam propagation is then made such that some of the light beams can form a large angle to the optical axis, so that the openings 73a '' to 73d '' and 75a '' to 75f '' of the second aperture device 70 must be very large, so that a sufficient Light amount is allowed through.
    In this way, illustrated in Figures 4, 4a, 5, 5a, e.g. an aberration-free low-beam light distribution with a light module according to the invention are generated, wherein the aberration-free low-beam distribution individual micro-optical systems each produce a defined contribution in the form of aberration-free partial light distribution.
    In addition, with this type of light modules, any aberration-free total light distributions can be generated. By group illumination of micro-optical systems with the first and the second diaphragm, each with at least one own light source, predetermined predetermined (and determined by the shape of the diaphragm edge) aberration-free partial light distributions can be activated (or hidden), so that e.g. create a dynamic light distribution.
    The design of the entrance optics (s) and the exit optics (s) may allow only a limited shaping of the light distribution. By using preferably standardized diaphragms as described above, one, two or more partial light distributions can be generated which, when appropriately selected, lead to the desired overall light distribution.
    The apertures may e.g. also be designed as individual panels, which "form" the aperture devices, but it is preferably as shown to aperture device components, such as flat films, etc., in which corresponding openings / openings are provided for the passage of light.
    When arranging the second diaphragm device 60, 70, care should be taken that it is correctly positioned with respect to the first diaphragm device 50. That When installed in the two aperture devices, the types of aperture of the second aperture device 60, 70 should correspond to the particular types of the first aperture device 50, e.g. Figures 2a and 2c can be seen. Referring to FIGS. 3, 4 and 5, the apertures of the first aperture row 51 of the first aperture device 50 correspond to the apertures of the first aperture row 61, 71 of the second aperture device 60, 70, the apertures of the second aperture row 52 of the first aperture device 50 the diaphragms of the second diaphragm row 62, 72 of the second diaphragm device 60, 70 correspond, etc.
    As already briefly mentioned above, in a first embodiment of the invention, as shown in FIG. 6a, it can be provided that the projection device 3, consisting of entrance optics 30 and exit optics 40, of a first diaphragm device 50 and a second diaphragm device 60, 70 is integrally formed , The optic body is, for example, a plastic optic which has been purposefully carbonized for the realization of diaphragm devices. Such charring can be done by laser beams or electron beams, etc.
    In a second variant, which is shown in FIG. 6b, provision is made for the projection device 3 to be formed from two separate components, an entry optics 30 and an exit optics 40, which are typically also arranged at a distance from each other. In this case, it is expedient for the first diaphragm device 50 to be arranged on the boundary surface 31 'of the entrance optics 30 facing the exit optics 40 and the second diaphragm device 60, 70 on the interface 41' of the exit optics 40 facing the entrance optics 30.
    An aperture device can be produced by vapor deposition of one of the boundary surfaces 31 'or 41', or by applying an absorbing layer, which is then specifically exposed to e.g. is removed again by means of laser beams. It is also conceivable to provide exit optics onto an entry optics provided with a diaphragm device by means of e.g. Apply two-component injection molding, so that ultimately results in a component.
    In this case, however, provision may also be made for both diaphragm devices 50, 60, 70 to be designed as components formed separately from the entrance optics 30 and the exit optics 40, as shown in FIG. 6c. In this case, the aperture devices 50, 60, 70 in the form of a precise mask, e.g. made of metal (shadow mask, line masks, grid, etc.) can be inserted.
    Of course, the variants shown in FIGS. 6a to 6c can be combined. It can e.g. for reasons of adjustability of the projection device 3 (distances of the focal planes, orientation of the optical axis, etc.) be advantageous, the second diaphragm device 60, 70 separated from the exit optics 40, the first diaphragm device but integrally with the entrance optics 30 or the first diaphragm device 50 with the second aperture device 60, 70 integrally formed but of the entrance optics 30 and the exit optics separately. It is advantageous with regard to the sharpness of the light image when the first diaphragm device 50 is arranged in the area formed by the focal points of the micro-optical systems, which forms the focal surface of the projection device 3. In this case, the light image is determined by the shape of the first diaphragm device 50 and corrected by the second diaphragm device 60, 70 and brought into a aberration-free state.
    At this point it should be stated that in the previous figures, the inner surfaces of the optics 30,40 are flat, while the outer surfaces are shown curved. In principle, it is also possible for one or both inner surfaces of the optics 30, 40 to be curved, but this is only possible in the case of a two-part or multi-part design.
    A one-piece design has the advantage that after the production, which must be done exactly, a single, stable component is present, which can be easily installed.
    In a conventional projection system with a projection lens, the lens has typical diameters between 60 mm and 90 mm. In a module according to the invention, the individual micro-optical systems have typical dimensions of about 2 mm × 2 mm (in V and H) and a depth (in Z) of about 6 mm-10 mm, so that in the Z-direction a clear less depth of a module according to the invention compared to conventional modules results.
    The light module according to the invention have a small overall depth and are basically freely formable, i. it is e.g. it is possible to design a first light module for generating a first partial light distribution separately from a second light module for a second partial light distribution and to make it relatively free, i. arranged vertically and / or horizontally and / or offset in depth to each other, so that design specifications can be realized easier.
    Another advantage of a light module according to the invention is that, although the projection device is very accurate to produce, which is easily possible with today's production methods, but eliminates the exact positioning of the light source (s) in relation to the projection optics. Exact positioning is of minor importance insofar as the at least one light source illuminates a whole array of micro-entrance optics, all of which produce substantially the same light image. In other words, this means nothing else than that the "actual" light source is formed by the real light source (s) and the array of micro-entry optics, and this "actual" light source then illuminates the micro-exit optics and possibly the associated apertures. Now, however, since the micro-entry and micro-exit optics are already optimally matched to one another, since they form a system, as it were, an inaccurate positioning of the real light source (s) is less significant.
    FIG. 7 also shows a lighting device for a vehicle headlight comprising one, two or more microprojection light modules as described above. Several groups of different light modules are provided, e.g. FIG. 7 shows light modules of the groups AA, AA1, AA2, SSI, BF1-BF8, FL, ABL, SA1, SA2, which together form the lighting device. Each group AA, AA1, AA2, SSI, BF1-BF8, FL, ABL, SA1, SA2 comprises one, two or more light modules.
    In the example shown, each group contains exactly one light module, which are enumerated below. In this case, AA denotes a light module for generating an asymmetrical aberration-free
    Low beam LVAa in the far field; AAl, AA2 aberration-free asymmetrical dipped beam LVaai, LVaa2 in the far field in the bend light module; SSI light module for generating a symmetrical aberration-free
    Light distribution LVssi (apron of a low beam, city light); BF1 ... BF8 Light modules for generating aberration-free and glare-free high beam LVbfi - LVbfs; the individual aberration-free light distributions LVbfi -LVbfs together produce an aberration-free high beam distribution or a part thereof, the individual aberration-free light distributions can be blanked out independently of one another as required; FL a light module for generating an aberration-free high beam LVfl; ABL a light module for generating a aberration-free turning light LVabl; SA1, SA2 additional light components for aberration-free motorway light LVsai, LVsa2 ·
    It is advantageous in such a lighting device, when the light sources of each group of light modules AA, AA1, AA2, SSI, BF1 - BF8, FL, ABL, SA1, SA2 are controlled independently of the light sources of other groups, so that the individual aberration-free light distributions or partial light distributions can be independently switched on and off and / or dimmed.
    Figure 7 is a purely schematic illustration and there is reference to "light modules" in connection with Figure 7. In fact, Figure 7 shows purely and schematically the projection devices AA, AA1, AA2, SSI, BF1-BF8, FL, ABL, SA1 , SA2 of the individual micro-projection light modules, and as can be seen in Figure 12, the projection devices AA, AA1, AA2, SSI, BF1 - BF8, FL, ABL, SA1, SA2 of the individual light modules form a common component in the form, for example For example, these projection devices may be arranged on a foil.
    Thus, with the present invention, the lens arrays of micro-entrance and micro-exit optics can be freely formed, and two or more light modules according to the invention can be combined via a common projection device component into a lighting device, wherein preferably those areas of the projection device Component, which are associated with a specific light module (and thus an independently controllable light source), the micro-optical systems are formed identical.
    FIGS. 9a and 9b show two further embodiments. It is envisaged that different areas, e.g. exactly three different areas, from micro-
    Optics systems 3 are illuminated with light sources 2 of different colors R, G, B, for example, one area with red light R, another area with green light G and a third area with blue light B.
    The different regions can belong to a projection device 3 (FIG. 9a), but also to different (two or more, for example three, as shown in FIG. 9b) projection devices or to a projection device or to two or more, in particular three projection devices. It is only important that each area of micro-optics systems produce the same light distribution as the other areas. In order to account for the chromatic aberrations described above, in the projection device of Fig. 9a it is provided that the first diaphragm device comprises three partial diaphragm devices 50R, 50G, 50B, each partial diaphragm device being arranged in the focal surface corresponding to the respective color. Thus, the foci of the micro-optics systems for the red light L in the light propagation direction are farther ahead than the foci of the micro-optics systems for the green light G, which in turn are in front of the foci of the blue-B micro-optics systems of Fig. 9a can be seen.
    The embodiment shown in FIG. 9a has the advantage that all light sources which emit light of different colors are assigned a single, preferably one-piece, entrance optic. It can also be provided that the first diaphragm device and / or the second diaphragm device comprises three partial diaphragm devices, which can be used to correct the chromatic aberrations.
    In the embodiment shown in Fig. 9b are three projection devices 3R, 3G, 3B, which may be integrally formed or separated from each other. In this case, the first diaphragm device 50 and the second diaphragm device 60, 70 are provided. The projection devices differ in the example by the shape of the entrance optics 30R, 30G, 30B, which are formed such that the focal surfaces of the three projection devices 3R, 3G, 3B corresponding to one light color each coincide. This effect can be achieved, for example, by adjusting the thickness and / or the curvature of the micro-entry optics forming the entry optics. By changing the thickness and / or the curvature of the micro-entrance optics, the focal lengths of the micro-optics systems are changed so that the distance between the exit optics 40 facing interface 31 'of the entrance optics 30 and the focal surface regardless of the color of the light R, G. , B, as shown in Fig. 9b. The first diaphragm device 50 of FIG. 9b, which is preferably formed in one piece, is arranged in the coincident focal surfaces of the projection devices 3R, 3G, 3B. The embodiment shown in Fig. 9b has the advantage of great freedom of design, which can be provided for example by three separately formed projection devices 3R, 3G, 3B.
    By overlaying the aberration-free light images from the different areas, a white aberration-free light image results overall.
    If laser light sources are used as light sources in this context (see in particular the discussion above), due to the high luminous intensities of lasers, only a few microprojection arrays (areas) are required to produce a white light distribution, so that a smaller one in the lateral direction Can generate light module.
    Finally, it should be noted that the diaphragms of the second diaphragm device can have optically effective diaphragm edges (for the correction of the aberrations Y1, Y2 from FIG. 3a) and / or upper (for the correction of the aberrations Y3 from FIG. 3a). This is discussed in the figures 10 to 15. Fig. 10 shows examples of diaphragms of the second diaphragm device 60, whose lower diaphragm edges are formed as a triangular pediment extending downwardly from the optical axis. Fig. 11 illustrates diaphragms whose lower diaphragms are known to be formed as a segment of an ellipse (ellipse arc), particularly a circle (a circular arc). The apertures of Fig. 12 have lower aperture edges, which aperture edges (for each of the apertures shown) comprise three aperture edge segments. In this case, two diaphragm edge segments are formed as curved inwards of the diaphragm opening elliptical arcs or circular arcs and with respect to the vertical axis extending through the optical axis center line M arranged mirror-symmetrically. The third diaphragm edge segment is formed as a straight line. The above-described embodiments of the lower diaphragm edges may contribute to the correction of the above-described aberrations Y1, Y2 of FIG. 3a. The exact shape of the lower diaphragm edges of the second diaphragm device 60 can be adapted to the beam path between micro-entry optics and micro-exit optics. It is, however, advantageous if the lower diaphragm edges have at least two sections which merge into one another continuously, the first (counted from left to right) section (with respect to the vertical direction V) falling and the last section rising. FIG. 13 shows examples of diaphragms of the second diaphragm device 80 whose upper diaphragm edges 81 'to 83' are trapezoidal. The lower panel edges are the same shape as the lower panel edges of FIG. FIG. 14 illustrates diaphragms whose upper diaphragm edges 84 ', 86' are formed as a segment of an ellipse (an elliptical arc), in particular a circle (a circular arc). In addition, FIG. 14 shows an upper diaphragm edge 85 ', which has a substantially gable-shaped course. This peak-shaped (directed with an outwardly of the aperture) gradient can be steep, flat or normal tilted. The course of the lower diaphragm edges of FIG. 14 is substantially equal to the course of the lower diaphragm edges of FIG. 11. The diaphragms of FIG. 15 have lower diaphragm edges, which are essentially identical in their shape to the lower diaphragm edges of FIG. 12. The upper panel edges 87 'to 89' are trapezoidal as in FIG. The above-described embodiments of the upper diaphragm edges may contribute to the correction of the above-described aberrations Y3 of FIG. 3a. The exact shape of the upper diaphragm edges of the second diaphragm device 60, 70,80 can be adapted to the beam path between micro-entry optics and micro-exit optics. It is, however, advantageous if the upper panel edges have at least two sections which merge into one another, wherein the first section (counted from left to right) (with respect to the vertical direction V) is ascending and the last section is descending.
    权利要求:
    Claims (40)
    [1]
    claims
    1. microprojection light module (1) for a motor vehicle headlamp, comprising *) at least one light source (2) and *) at least one projection device (3), the light emerging from the at least one light source (2) in an area in front of the motor vehicle in Image of at least one light distribution, wherein the projection device (3) comprises: -) an entrance optics (30), which one, two or more micro-entry optics (31), which are preferably arranged in an array, -) an exit optics ( 40) having one, two or more micro exit optics (41) which are preferably arranged in an array, each micro entrance optic (31) being associated with exactly one micro exit optic (41), the micro entrance optics (41) 31) are designed in such a way and / or the micro-entry optics (31) and the micro exit optics (41) are arranged relative to one another in such a way that essentially all of the micro entrance optics (31) Exiting light exactly enters only into the associated micro-exit optics (41), and wherein the light preformed by the micro-entry optics (31) from the micro-exit optics (41) in an area in front of the motor vehicle as at least one light distribution (LV1 - LV5 ; GLV) is shown, wherein between the entrance optics (30) and the exit optics (40) a first diaphragm device (50) is arranged, characterized in that between the entrance optics (30) and the exit optics (40) at least one second diaphragm device (60, 70) is arranged.
    [2]
    2. microprojection light module according to claim 1, characterized in that the second diaphragm device (60, 70) between the first diaphragm device (50) and the exit optics (40) is arranged.
    [3]
    3. microprojection light module according to claim 1 or 2, characterized in that a micro-entry optics (31) and one of a micro-entry optics (31) associated micro-exit optics (41) form a micro-optical system, which micro-optical system at least has a micro-optic focus (Fl).
    [4]
    4. Microprojection light module according to one of the claims Errors! Reference source could not be found until 3, characterized in that each micro-entry optics (31) focuses the light passing through them into the at least one micro-optic focal point (Fl).
    [5]
    5. microprojection light module according to claim 3 or 4, characterized in that a micro-optical focal point (Fl) of each micro-entry optics (31) in the light exit direction in front of the associated micro-exit optics (41), wherein the micro-entry optics ( 31) focus the light passing through them in the vertical direction respectively on the front of the micro-exit optics (40) lying micro-optic focus (Fl), and wherein the micro-exit optics (41) each with the micro-optic focus (Fl) of the associated micro-entry optics (31) have coincident focal point.
    [6]
    6. microprojection light module according to one of claims 3 to 5, characterized in that each micro-optical system expands the light passing through them in the horizontal direction (H).
    [7]
    7. microprojection light module according to one of claims 1 to 6, characterized in that each micro-entry optics (31) is designed as a collection optics, wherein preferably the collection optics light in at least one direction, preferably in the horizontal direction (V) collects.
    [8]
    8. microprojection light module according to one of claims 1 to 7, characterized in that each micro-exit optics (41) is designed as a projection optics or as a spherical lens or as an aspheric lens or as a free-form lens.
    [9]
    9. microprojection light module according to one of claims 1 to 8, characterized in that the mutually facing boundary surfaces (31 ', 41') of mutually associated micro-entry optics (31) and micro-exit optics (41) congruent to each other, preferably planar and preferably also arranged congruent to each other.
    [10]
    10. microprojection light module according to one of claims 1 to 9, characterized in that the optical axes (310,410) of mutually associated micro-entry optics (31) and micro-exit optics (41) parallel to each other, preferably coincide.
    [11]
    11. Microprojection light module according to one of claims 1 to 10, characterized in that the first diaphragm device (50) lies in a plane which is spanned by the micro-optic focal points (Fl), wherein the first diaphragm device (50) for at least one pair of mutually associated micro-entry and micro-exit optics (31, 41), preferably for a plurality of pairs and in particular for all pairs a diaphragm (51 to 55), each having at least one, for example, exactly one optically effective diaphragm edge (51 '). , 52 ', 53', 54 ', 55').
    [12]
    12. microprojection light module according to one of claims 1 to 11, characterized in that the second diaphragm device (60, 70, 80) for at least a pair of mutually associated micro-entry and micro-exit optics (31,41), preferably for a plurality of pairs and in particular for all pairs a diaphragm (61 to 65, 71 to 75, 81 to 89) each having at least one, for example exactly one optically effective diaphragm edge (61 'to 65', 71 'to 75', 81 'to 89 ') having.
    [13]
    13. microprojection light module according to claim 12, characterized in that all the apertures of the second aperture device (60, 70,80) have identical aperture edges.
    [14]
    14. microprojection light module according to claim 13, characterized in that at least two apertures of the second aperture device (60, 70,80) have differently shaped aperture edges.
    [15]
    15. microprojection light module according to one of claims 12 to 14, characterized in that at least one, preferably two, of the optically active diaphragm edges (61 'to 65', 71 'to 75', 81 to 89) has a gable-shaped course.
    [16]
    16. microprojection light module according to one of claims 12 to 15, characterized in that with respect to the vertical direction (V), a lower optically effective diaphragm edge (61 'to 65', 71 'to 75') of the diaphragm (61 to 65, 71 to 75) and / or an upper optically effective diaphragm edge (81 'to 89') of the diaphragm (81 to 89) has one, two or more curved and / or rectilinear segments, in particular triangular or trapezoidal or taut or are circular / is formed.
    [17]
    17. microprojection light module according to one of claims 12 to 16, characterized in that the second diaphragm device (60) with respect to the first diaphragm device (50) is arranged such that the aperture (61 to 65, 71 to 75,81 to 89) the second diaphragm device (60, 70, 80) with respect to the diaphragm (51 to 55) of the first diaphragm device (50) vertically, ie parallel to the vertical direction (V), are offset.
    [18]
    18. microprojection light module according to one of claims 1 to 17, characterized in that the first diaphragm device (50) and the second diaphragm device (60), preferably in the horizontal direction (H) are spaced.
    [19]
    19. Microprojection light module according to one of claims 1 to 18, characterized in that the first diaphragm device (50) and the second diaphragm device (60) are identical.
    [20]
    20. microprojection light module according to claim 19, characterized in that the second aperture device (60) with respect to the first aperture device (50) is arranged mirrored with respect to a horizontal plane (B-B).
    [21]
    21. microprojection light module according to one of claims 1 to 20, characterized in that the first diaphragm device (50) with the second diaphragm device (60, 70) is integrally formed.
    [22]
    22 microprojection light module according to one of claims 1 to 21, characterized in that the projection device (3) consisting of inlet optics (30) and exit optics (40), and from the first aperture device (50) and from the second aperture device (60, 70), is formed in one piece.
    [23]
    23 microprojection light module according to one of claims 1 to 22, characterized in that the projection device (3) consisting of inlet optics (30) and exit optics (40) is formed from two separate components.
    [24]
    24. microprojection light module according to claim 23 in conjunction with one of claims 10 to 18, characterized in that the first diaphragm device (50) on the exit optics (40) facing interface (31 ') of the entrance optics (30) and the second diaphragm device (60, 70) on the entrance optics (30) facing interface (41 ') of the exit optics (40) is arranged.
    [25]
    25. Microprojection light module according to claim 23 in conjunction with one of claims 10 to 18, characterized in that the first diaphragm device (50) as of the entrance optics (30), the exit optics (40) and the second diaphragm device (60, 70 ) and the second diaphragm device (60, 70) is constructed as a component formed separately from the entry optics (30) and the exit optics (40).
    [26]
    26 microprojection light module according to one of claims 1 to 25, characterized in that the at least one light source (2) comprises at least one semiconductor-based light source, which has at least one semiconductor-based light source preferably one, two or more LEDs and / or laser diodes.
    [27]
    27 microprojection light module according to one of claims 1 to 26, characterized in that between the at least one light source (2) and the at least one projection device (3) at least one attachment optical device (4), preferably a collimator is arranged, in which at least one Front optics device (4) the at least one light source (2) irradiates the light emitted by it, and which attachment optical device (4) is formed such that the light emerging from it is directed substantially parallel.
    [28]
    28 microprojection light module according to one of claims 1 to 27, characterized in that the light source (2) comprises at least one semiconductor-based light source, which comprises at least one semiconductor-based light source one, two or more LEDs and / or laser diodes, wherein the one, two or more LEDs and / or laser diodes of the at least one semiconductor-based light source are independently controllable.
    [29]
    29 microprojection light module according to one of claims 1 to 28, characterized in that at two or more light sources, the light sources are independently controllable.
    [30]
    30. microprojection light module according to one of claims 1 to 29, characterized in that each micro-optical system consisting of a micro-entry optics (31) and a micro exit optics (41) exactly one light source, which is preferably exactly one LED or exactly one Laser diode includes, is assigned.
    [31]
    31. Microprojection light module according to one of claims 1 to 30, characterized in that two or more light source groups are provided, each light source group comprises at least one light source (2), and wherein the light sources (2) of a light source groups Emit light of the same color (R, G, B), and wherein the light sources of different light source groups emit light of different colors (R, G, B), and wherein each light source group has a dedicated area (3R, 3G , 3B) illuminate the at least one projection device, and wherein the different regions (3R, 3G, 3B) are identically formed or designed to generate identical light distributions.
    [32]
    32. The microprojection light module according to claim 31, characterized in that three light source groups are provided, wherein preferably a light source groups emit red light, a light source groups green light and a light source groups emit blue light.
    [33]
    33. An illumination device for a vehicle headlamp, comprising one, two or more of microprojection light modules (1) according to one of claims 1 to 32.
    [34]
    34. Lighting device according to claim 33, characterized in that two or more groups of microprojection light modules (AA, AA1, AA2, SSI, BF1 - BF8, FL, ABL, SA1, SA2) are provided, and wherein each group one, two or microprojection light modules (1), wherein microprojection light modules (AA, AA1, AA2, SSI, BF1-BF8, FL, ABL, SA1, SA2) of a group have the same light distribution (LVaa, LVaai, LVaa2, LVssi, LVbfi) LVbfs, LVfl, LVabl, LVsai, LVsa2), and wherein microprojection light modules (AA, AA1, AA2, SSI, BF1-BF8, FL, ABL, SA1, SA2) of different groups have different light distributions (LVaa, LVaai, LVAa2, LVssi, LVbfi - LVbfs, LVfl, LVabl, LVsai, LVsa2), the light sources of each group of microprojection light modules being controllable independently of the light sources of the other groups.
    [35]
    35. Lighting device according to claim 34, characterized in that the projection devices (3) of microprojection light modules (AA, AA1, AA2, SSI, BF1 - BF8, FL, ABL, SA1, SA2) of a group form a common component.
    [36]
    36. Lighting device according to claim 34 or 35, characterized in that the projection devices (3) of all microprojection light modules form a common component (300).
    [37]
    37. Lighting device according to one of claims 34 to 36, characterized in that two or more groups for generating different light distribution (LVaa, LVaai, LVaa2, LVssi, LVbfi - LVbfs, LVfl, LVabl, LVsai, LVsa2) are provided, each group forms a different light distribution (LVaa, LVaai, LVaa2, LVssi, LVbfi - LVbfs, LVfl, LVabl, LVsai, LVsa2), which consists of one of the following light distributions (LVaa, LVaai, LVaa2, LVssi, LVbfi - LVbfs, LVfl, LVabl, LVsai , LVsa2) is selected: *) cornering light distribution; *) City light distribution; *) Highway light distribution; *) Motorway light distribution; *) Light distribution for additional light for motorway light; *) Cornering light distribution; *) Low beam light distribution; *) Low beam apron light distribution; *) Light distribution for asymmetrical low beam in the far field; *) Light distribution for asymmetric low beam in the far field in the bend lighting mode; *) High beam light distribution; *) Glare-free high beam light distribution.
    [38]
    38. The lighting device according to claim 33, comprising two or more microprojection light modules, each microprojection light module having at least one light source group, each light source group comprising at least one light source, and light sources of a light source group thereof Color (R, G, B) emit, and wherein at least two light source groups are provided which emit light of different colors, and wherein each light source group a specially assigned to these light source groups area (3R, 3G, 3B) of the at least one Projection device of their microprojection light module illuminate, and wherein the different areas (3R, 3G, 3B) are identical or formed to generate identical aberration-free light distributions.
    [39]
    39. Lighting device according to claim 38, characterized in that three groups of light source groups are provided, wherein preferably one group of light source groups emits red light, one group of light source groups emits green light and a group of light source groups emits blue light, and wherein each group of light source groups comprises at least one light source group.
    [40]
    40. A vehicle headlight with one or more lighting devices according to one of claims 33 to 39.
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    同族专利:
    公开号 | 公开日
    JP2018531496A|2018-10-25|
    JP6571279B2|2019-09-04|
    US10612741B2|2020-04-07|
    WO2017066818A1|2017-04-27|
    EP3365594B1|2020-09-09|
    EP3365594A1|2018-08-29|
    AT517885B1|2018-08-15|
    CN108139061A|2018-06-08|
    CN108139061B|2020-07-10|
    US20190072252A1|2019-03-07|
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    法律状态:
    优先权:
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