• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a projection device (1) for a motor vehicle headlight, wherein the projection device (1) for imaging light of at least one of the projection device (1) associated light source (2) is arranged in an area in front of a motor vehicle in the form of at least one light distribution, wherein the Projection device (1) comprises: an entry optic (3) which has a number of micro entrance optics (3a) which are preferably arranged in an array, an exit optic (4) which has a number of micro exit optics (4a) which are preferably arranged in an array, wherein each micro-entry optics (3a) is associated with exactly one micro exit optics (4a), wherein the micro entrance optics (3a) are formed and / or the micro entry optics (3a) and the micro-exit optics (4a) are arranged relative to one another in such a way that substantially all of the light emerging from a micro-entry optics (3a) t exactly enters only the associated micro-exit optics (4a), and wherein the light preformed by the micro-entry optics (3a) is imaged by the micro exit optics (4a) in an area in front of the motor vehicle as at least one light distribution.
    公开号:AT518905A1
    申请号:T50688/2016
    申请日:2016-07-29
    公开日:2018-02-15
    发明作者:Josef Guertl Ing；Mandl Bernhard
    申请人:Zkw Group Gmbh；
    IPC主号:
    专利说明:

    Microoptic lenses on glass with printed beam aperture - concept and
    manufacturing
    The invention relates to a projection device for a motor vehicle headlight, wherein the projection device is arranged for imaging light of at least one projection device associated light source in an area in front of a motor vehicle in the form of at least one light distribution, the projection device comprising: - an entrance optics, which a number of micro Entry optics, which are preferably arranged in an array, - exit optics, which have a number of micro exit optics, which are preferably arranged in an array, wherein each micro entrance optics is assigned exactly one micro exit optics, wherein the micro access optics Entry optics formed in 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 where in which the light preformed by the micro-entry optics is imaged by the micro-exit optics in an area in front of the motor vehicle as at least one light distribution.
    Furthermore, the invention relates to a microprojection light module for a motor vehicle headlight, comprising at least one projection device according to the invention, a vehicle headlight, in particular
    Motor vehicle headlight comprising at least one microprojection light module according to the invention and a vehicle, in particular a motor vehicle, with at least one vehicle headlight according to the invention.
    Furthermore, the invention relates to a method for producing a projection device according to the invention for a motor vehicle headlight.
    From the prior art, e.g. the document AT 514967 Bl has become known that shows a projection devices of the type mentioned. By the increasing
    Miniaturization of the entrance and exit optics, the optics are always sensitive to tolerance, since previously permissible deviations of absolute values of the optics due to the smaller dimensions of the optics lead to ever higher relative errors. So far, attempts have been made to reduce dimensional inaccuracies with the aid of improved production methods.
    It has surprisingly been found that now the heat input into the projection device has a significant influence on their optical behavior. By heat input of a light source as well as by light absorption within the respective optics or diaphragm device they can be heated so far that the projection device causes aberrations. In this case, optics and optionally provided diaphragm devices may have different thermal expansion coefficients due to material differences and expand differently. This problem is even more pronounced when transparent elements such as the entrance optics and the exit optics as well as absorbing elements such as optionally provided aperture devices reach different temperature levels when heat is applied.
    It is therefore an object of the invention to provide a projection device in which aberrations can be largely avoided despite increasing miniaturization. This object is achieved with a projection device of the aforementioned type, in which according to the invention the entrance optics and the exit optics are firmly connected to at least one translucent carrier arranged between the entrance optics and the exit optics, wherein the at least one carrier consists at least partially of glass. The glass may in particular be a mineral glass, for example a flat glass known under the registered trade name "B270" from Schott.
    As a result of the fixed connection of the entry optics and the exit optics with at least one translucent support arranged between the optics, the thermal expansion of the entrance optics and the exit optics can be greatly reduced and matched to one another or matched to other elements of the projection device, such as diaphragm devices. It is not absolutely necessary that the inlet and outlet optics are connected to the same carrier.
    The phrase "substantially all of the light exiting ..." means that it is sought to actually radiate all the light flux exiting a micro-entry optic only into the associated micro-exit optics Due to the circumstances should not be possible, it should be sought after, at least as little luminous flux in the adjacent micro-exit optics, that thereby no adverse optical effects, such as scattered light, which can lead to glare, etc. arise.
    Moreover, in the wording "with the micro-entrance optics being designed in such a way and / or the micro-entry optics and the micro-exit optics being arranged relative to one another" it is to be understood that additional measures, such as apertures (see below), may be provided either exclusively or preferably in addition to their actual function, they still have the function that the entire luminous flux is directed precisely to the associated micro-exit optics.
    By using a plurality of dedicated micro-optics instead of a single optic as in conventional projection systems, both the focal lengths and the dimensions of the micro-optics per se are significantly lower than with "conventional" optics As a result, the overall depth of the projection device can be significantly reduced in comparison with conventional optics.
    By increasing the number of micro-optics systems, on the one hand, the luminous flux can be increased or scaled, wherein an upper limit with regard to the number of micro-optics systems is limited primarily by the respectively available production methods. For the generation of a low beam function, e.g. 200 to 400 micro-optics systems suffice or be favorable, this being neither a limiting value to describe above or below but only an exemplary number. To increase the luminous flux, it is beneficial to increase the number of similar micro-optics. Conversely, one can use the variety of micro-optics to introduce micro-optics of different optical behavior into a projection system to create or superimpose different light distributions. The variety of micro-optics thus also allows design options that are not available in a conventional optics.
    Such a light module is also scalable, i.e., multiple identical or similarly constructed light modules can be made into a larger overall system, e.g. be assembled to a vehicle headlight.
    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-optics systems have typical dimensions of approximately 2 mm × 2 mm (in V and H) and a depth (in Z, see, eg, FIG. 1) of approximately 6 mm-10 mm, so that in the Z-direction results in a much smaller depth of a module according to the invention compared to conventional modules.
    The light module according to the invention or the projection device 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 the exact positioning of the light source (s) with respect to the projection device is eliminated. Exact positioning is only of secondary importance insofar as the at least one light source may possibly illuminate an entire 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, this "actual" light source then illuminating the micro-exit optics and, if necessary the assigned apertures. Now, however, since the micro-entry and micro-exit optics are already optimally matched to one another, since they form a quasi-system, an inaccurate positioning of the real light source (s) is less significant. The real light sources are, for example, approximately point-like light sources such as e.g. Light-emitting diodes whose light is collimated by collimators such as Compound Parabolic Concentrators (CPC) or TIR (Total Inner Reflection) lenses.
    In particular, it can be provided that two mutually spaced-apart carriers are arranged between the entrance optics and the exit optics, wherein the entrance optics and the exit optics are fixedly connected to one of the carriers. The spacing of the carriers takes place in the direction of the optical axis of the entrance and the exit optics, wherein the optical axes of the entrance optics and the exit optics coincide with each other in position and orientation. The entry optics is therefore connected in this variant of the invention with a carrier and the exit optics with another carrier, which, for example, an improved cooling of the optics is made possible.
    In addition, it can be provided that the entrance optics and the exit optics each have at least one optical axis, wherein the optical axes are oriented parallel to each other, wherein one of the two carriers is displaceable with respect to the remaining carrier normal to one of the mutually parallel optical axis. Depending on the direction in which a carrier is displaced with respect to the remaining carrier, the light image imaged by the exit optics can be influenced in a targeted manner. If the projection device is used, for example, in a motor vehicle headlight, then a horizontal displacement of a carrier in relation to the remaining carrier can be used to convert a cornering light. A vertical displacement of a carrier with respect to the remaining carrier could in turn be used for headlamp leveling.
    Alternatively, it can be provided that between the two opposing, the entry optics or the exit optics carrying carriers a third transparent carrier is arranged, with which the first two carriers are firmly connected.
    Alternatively, it can be provided that exactly one carrier is arranged between the entrance optics and the exit optics, wherein both the entrance optics and the exit optics are fixedly connected to the carrier on opposite sides of the carrier. This arrangement allows a particularly dimensionally accurate and thermal expansion insensitive implementation of a projection device, since the thermal expansion of the entrance and exit optics is aligned with each other via the common carrier. In addition, this arrangement leads to the fact that the temperature differences between the inlet and outlet optics and optionally provided
    Aperture devices are comparatively small, whereby the thermal expansion behavior of said components can be additionally adjusted to each other. It may be advantageous if the entrance optics and / or the exit optics are formed integrally with the carrier, in particular of the same material. For example, an aperture device could be formed within the carrier or one of the optics. For this purpose, for example, the diaphragm device could be "baked" or structured by means of a laser or electron beam.
    It can be particularly favorable when the fixed connection of the entrance optics and the exit optics with the at least one carrier is in each case designed as a transparent adhesive bond. The adhesive bond is preferably realized by means of a UV-curing adhesive. In particular, the micro-entry optics or the micro-exit optics and their respective connection to the carrier may consist of UV-curing adhesive and be shaped in one processing step.
    In order to avoid unwanted losses and disruptive light-deflecting effects on and within the adhesive bond, it may be provided that the thickness of the adhesive bond in the direction of the optical axis of the entrance or exit optics is not more than 20 micrometers and the ratio of refractive indices of the material used for the adhesive bond in the hardened state of the adhesive bond and the material of the carrier is between 0.9 and 1.1.
    In order to crop the light image of the projection device, provision can be made for a first diaphragm device to be arranged on the side of at least one carrier facing the entrance optics.
    Alternatively or in addition to this, it can be provided that an aperture device is arranged on a side of at least one carrier facing away from the entrance optics, which allows the thickness of the carrier to be selected so that the diaphragm device can be located in a focal plane located in front of the entrance optics Entry optics is.
    In order to avoid crosstalk between adjacent micro-optics, it may be provided that a second diaphragm device is arranged on the side of at least one carrier facing the outlet optics.
    Alternatively or in addition to this, it can be provided that at the side facing away from the outlet optics at least one support a diaphragm device is arranged, which is made possible by an adjustment of the thickness of the carrier to place the diaphragm device exactly in the focal plane of an exit optics.
    In particular, it can be provided that at least one diaphragm device is designed as an opaque metal layer vapor-deposited on the at least one carrier for forming the light image of the projection device.
    Additionally or alternatively, it can be provided that at least one diaphragm device is designed as an opaque lacquer layer printed on the at least one carrier for shaping the light image of the projection device. A structuring of the vapor-deposited layer could take place by vapor deposition through a mask or (preferably to increase the positional accuracy) the entire surface layer after the vapor deposition is partially removed, for example, by sweeping with a laser beam.
    It can be particularly favorable if the carrier consists entirely of transparent glass.
    In addition, it can be provided that the micro-entry optics and / or the micro-exit optics consists of plastic, which is in particular transparent, such as e.g. UV-curing adhesive.
    Another aspect of the invention relates to a microprojection light module for a motor vehicle headlight, comprising at least one projection device according to the invention and at least one light source for feeding light into the projection device.
    The invention is particularly advantageous if the at least one light source comprises at least one semiconductor light source, e.g. at least one light emitting diode and / or at least one
    Laser diode includes. The actual light source may in the latter case, i. in the case of using at least one laser diode be a luminous element or comprise one or more light elements (light element eg in the form of a so-called "phosphor", an optoceramic, etc.), which (s) of a laser, ie a laser diode and irradiated for emission is excited by light For IR light, a corresponding IR diode is used.
    A further aspect of the invention relates to a vehicle headlight, in particular a motor vehicle headlight, comprising at least one microprojection light module according to the invention.
    In addition, the invention relates to a vehicle, in particular a motor vehicle, with at least one vehicle headlight according to the invention.
    In a further aspect of the invention, the above-mentioned object is achieved with a method for producing a projection device for a motor vehicle headlight, wherein the projection device is configured for imaging light of at least one light source associated with the projection device in an area in front of a motor vehicle in the form of at least one light distribution the steps of: a) applying a first aperture device on a first flat side or a second flat side of a sheet-like translucent carrier, the carrier being at least partially made of glass; b) attaching or applying an entrance optic comprising a number of micro-entrance optics are preferably arranged in an array, on the first flat side of the carrier, wherein the entrance optics, the first aperture device at least partially covered and is arranged such that light on the entrance optics you rch the first aperture device can at least partially enter the carrier or at least partially escape after entering and passing through the carrier through the first aperture device, and the attachment of the entrance optics on the first flat side of the carrier by means of a translucent adhesive, c) applying a d) attaching or applying exit optics having a number of micro-exit optics, which are preferably arranged in an array, on the second flat side of the first flat side opposite the second flat side of the carrier or on a flat side of another carrier Carrier or the further carrier, wherein the exit optics at least partially covers the second diaphragm device and is arranged such that the carrier or the further carrier penetrating light via the second diaphragm device enter the exit optics and dur The exit optics can exit through or pass through the second diaphragm device into the carrier or the further carrier entering light through the carrier or the other carrier and exit through exit optics and the attachment of the exit optics on the second flat side of the carrier or on a Flat side of the other carrier by means of a translucent adhesive.
    The attachment of the micro-entry optics and / or micro-exit optics can be done by means of a transparent adhesive. Alternatively, an entrance optics or exit optics may also consist of transparent adhesive, in particular of the same transparent adhesive, by means of which the respective optics are fastened to the respective support. In this case, the entry optics or exit optics can be "applied" to the respective carrier, so that the fastening and shaping takes place in a step of applying suitable processes for this purpose, for example so-called embossing or injection-compression molding.
    The application of the aperture devices can e.g. take place by means of screen printing or metallic vapor deposition or alternatively by means of laser or electron beam, which "burns" the aperture device in the respective optical body or this structured, are performed.
    For the exact positioning of the first diaphragm device, provision can be made for the position of the first diaphragm device to be detected optically before the implementation of step b) and the attachment of the entry optics in accordance with the following step b) taking into account the optical detection of the position of the first diaphragm device.
    Similarly, it can be provided that the position of the second diaphragm device is optically detected before the implementation of step d) and the attachment of the exit optics according to the subsequent step d) taking into account the optical detection of the position of the second diaphragm device.
    For this purpose, position marks and / or registration marks may be provided on the respective carrier and / or the respective aperture device. Alternatively, the lens contour of the respective optics (entrance or exit optics) could be detected optically. It would also be conceivable to have an (active) alignment with the aid of light introduced into the optics, wherein the diaphragm device can be referenced to the diaphragm device or the light passage.
    The diaphragm devices can also be sealed by means of transparent adhesive, which is particularly favorable in the case of an arrangement in which two carriers are provided, between which there is a gap.
    A material used for the entry and / or exit optics can be, for example, float glass, that can have thickness differences of up to 150 μm in the direction of the optical axis. These unevenness can be compensated for by varying the thickness of the adhesive, the ratio of the refractive indices of the material used for the adhesive bond in the cured state of the adhesive bond and the material of the carrier, so the value of the quotient formed by the refractive index of the adhesive bond divided by the refractive index of the material of the carrier is between 0.9 and 1.1.
    The invention will be explained in more detail below with reference to exemplary and non-limiting embodiments, which are illustrated in the figures. Show in it
    FIG. 1 shows a schematic illustration of a first embodiment of a microprojection light module according to the invention,
    FIG. 2 shows a schematic representation of a second embodiment of a microprojection light module according to the invention,
    FIG. 3 shows a schematic representation of a third embodiment of a microprojection light module according to the invention,
    FIGS. 4 (a) to (h) show a schematic representation of a method for producing a projection device according to the invention,
    FIGS. 5 (a) to (1) show a schematic representation of a method for producing the third embodiment of a microprojection light module according to FIG. 3,
    FIG. 6 is an illustration of a possibility for the exact positioning of the entry and exit optics and of the diaphragm devices, and
    FIG. 7 shows a representation of a possibility for the exact positioning of an entry optics on a carrier as well as an opposing diaphragm device.
    In the following figures, unless otherwise stated, like reference numerals designate like features.
    FIG. 1 shows schematically an embodiment of a projection device 1 according to the invention for a motor vehicle headlight. The projection device 1 is set up to image light of at least one light source 2 associated with the projection device 1 in an area in front of a motor vehicle in the form of at least one light distribution. The projection device 1 comprises an entrance optics 3, which has a number of micro entrance optics 3a, which are preferably arranged in an array, an exit optics 4, which has a number of micro exit optics 4a, which are preferably arranged in an array, each Micro-entry optics 3a is associated with exactly one micro exit optics 4a, wherein the micro entrance optics 3a, 4a are formed and / or the micro entrance optics 3a and the micro exit optics 4a are arranged to each other such that substantially all of a micro Entry optics 3a exiting light just enters the associated micro exit optics 4a. In this case, the light preformed by the micro-entrance optics 3a is imaged by the micro exit optics 4a in an area in front of the motor vehicle as at least one light distribution or optics are just set up for this purpose. The entry optics 3 as well as the exit optics 4 are fixedly connected according to the first embodiment of the invention with exactly one translucent carrier 5 arranged between the entrance optics 3 and the exit optics 4, wherein the carrier 5 consists at least partially of glass. Thus, the thermal expansion behavior of the entrance optics 3 and the exit optics 4, which are usually made of plastic, can be optimized. In particular, unwanted positional changes of the micro-optics 3a and 4a with respect to one another and with respect to diaphragm devices, not shown in FIG. 1 and discussed in the course of FIGS. 4 (a) to 4 (h), can be prevented.
    FIG. 1 also shows a microprojection light module 6 which comprises the projection device 1 and at least one light source 2 for feeding light into the projection device 1. 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.
    The light source 2 is preferably a semiconductor light source, for example an LED light source, which has one or more LEDs. The light source may also consist of one or more laser diodes.
    The microprojection light module 6 may also include a lens attachment 7, in which the light source 2 radiates. The attachment optics 7 may be, for example, a collimator which directs the light of the light source 2 substantially parallel before it impinges on the projection device 1. At the collimator mounts could be formed, which can cooperate with the projection device 1 for mounting on the same, in particular on the carrier 5, together.
    2 shows a schematic representation of a second embodiment of a microprojection light module 6 according to the invention, in which two carriers 5 'and 5 "are provided, in contrast to the first embodiment. The carriers 5' and 5" are arranged between the entry optics 3 and the exit optics 4 and are opposite each other, wherein the entrance optics 3 and the exit optics 4 are fixedly connected to one of the carriers.
    The entrance optics 3 and the exit optics 4 each have at least one optical axis, wherein the optical axes are oriented parallel to one another, wherein in the present example the orientation of these optical axes coincides with the orientation of the axis z. In the present example, one of the two carriers, namely the carrier 5 ", is also displaceable with respect to the remaining carrier normal to the optical axis, wherein the displacement can be predetermined for example by means of piezoelectric actuators 8. The light image generated by the projection device 1 can be displaced horizontally By a vertical displacement, the light image generated by the projection device 1 can be vertically displaced or deflected, whereby, for example, a headlamp leveling can be implemented.
    FIG. 3 shows a schematic representation of a third embodiment of a microprojection light module 6 according to the invention. Therein, a third carrier 5 '"is shown, which is arranged between the first carrier 5' and the second carrier 5". This embodiment allows, as will be discussed below with reference to FIGS. 5 (a) to (h), to arrange the first diaphragm device 9a (see eg FIGS. 5 (b) to (d)) on the side of the first carrier 5 'facing away from the entrance optics 3 , In this way, it is possible to use entrance optics 3, in which the focal plane of the entrance optics 3 is spaced from the exit surface of the entrance optics in the direction of the emission direction. Nevertheless, the first diaphragm device 9a can lie exactly in the focal plane of the entrance optics 3, for example by selecting the thickness of the carrier 5 'correspondingly so that the side of the first carrier 5' remote from the entrance optics 3 lies in the focal plane of the entrance optics 3. This is advantageous, since inlet pits, in which the focal plane lies directly on the exit face of the entry stop, can be more difficult to realize due to the strong curvatures of the optics required for this purpose and may have a lower efficiency. In addition, the arrangement of the first diaphragm device 9a on the side facing away from the entrance optics 3 side of the first carrier 5 'extends the degrees of freedom in the design of the optics. When changing the focal length, which could be done for example by varying the curvature of the optics, the beam aperture can be placed by adjusting the support thickness (alternatively, the thickness of the adhesive) in each case in the focal plane.
    In order to provide a dimensionally stable projection device 1, which is particularly insensitive to temperature changes, it can also be provided that the third carrier 5 '", as shown in Figure 3, as lying between the first and the second carrier 5' and 5" lying " Intermediate piece "is formed, which can be firmly connected to the two carriers 5 'and 5". The third carrier 5 '"is of course also designed to be translucent.
    Figures 4 (a) to (h) show a schematic representation of a method for producing a projection device 1 according to the invention for a motor vehicle headlamp according to the first-mentioned embodiment, wherein the projection device 1 for imaging light of at least one of the projection device 1 associated light source 2 in an area in front of a Motor vehicle is set up in the form of at least one light distribution. FIG. 4 (a) shows a carrier 5 with a first flat side 5a, onto which a first diaphragm device 9a, for example by screen printing or metallic vapor deposition, is applied in FIG. 4 (b), wherein the carrier 5 consists at least partially of glass. FIG. 4 (c) shows the next step b) of the method, namely the fixing of an entry optic 3, which has a number of micro entrance optics 3 a, which are preferably arranged in an array, on the first flat side 5 a of the carrier 5 Entry optics 3, the first aperture device 9a at least partially covered and arranged such that light can at least partially enter the carrier 5 through the entrance lens 3 through the first aperture device 9a, and the attachment of the entrance optics 3 on the first flat side 5a of the carrier 5 by means of a translucent adhesive takes place. FIG. 4 (d) shows a state in which entrance optics 3 is already firmly connected to the carrier 5. Subsequently, according to step c), the application of a second diaphragm device 9b on one of the first flat side 5a opposite second flat side 5b of the carrier 5 (or another carrier 5 "in the case of the second aforementioned embodiment), take place (see Figure 4 (f)). 4 (e) and the following figures 4 (f) to 4 (h) show the projection device 1 from an inverted side, followed by the step d), namely fixing an exit optics 4 on the second flat side 5b of the carrier 5 (or the further carrier 5 "), which exit optics 4 has a number of micro-exit optics 4a, which are preferably arranged in an array, wherein the exit optics 4, the second aperture device 9b at least partially covered and arranged such that the carrier 5 (or. The further carrier 5 ") penetrating light through the second aperture device 9b in the exit optics 4 and through it n can. The attachment of the exit optics 4 takes place on the second flat side 5b of the carrier 5 (or the further carrier 5 ") by means of a translucent adhesive, which is preferably carried out UV-curing (see Figure 4 (g)).
    FIG. 4 (h) shows an inventive projection module 1 in the sense of the aforementioned first embodiment in a final state.
    FIGS. 5 (a) to (1) show a schematic representation of a method for producing the third embodiment of a projection device according to FIG. 3, which in principle runs similarly to the previously described method according to FIGS. 4 (a) to 4 (h). In contrast to the aforementioned method, a method for producing a projection device 1 according to FIG. 3 is described therein, in which a third carrier 5 '"is provided, which lies between the first and the second carrier 5' or 5". The diaphragm devices 9a and 9b are arranged therein respectively on the side facing away from the respective optics 3 and 4 side of the respective carrier 5 'and 5 ", whereby as already described for Figure 3, an additional degree of freedom in the design of the respective optics 3 or 4 (a) shows the first carrier 5 ', Figure 5 (b) shows a first diaphragm device 9a attached thereto, Figure 5 (c) shows the carrier 5' according to Figures 5 (a) and (4). b) from an opposite side to which the entrance optics 3 is attached, Figure 5 (d) the carrier 5 'with a fixed entrance optics 3, Figure 5 (e) the second carrier 5 ", Figure 5 (f) the second carrier fifth (g) the third carrier 5 '"applied to the second carrier 5" (FIG. 5 (h)), wherein an exit lens 4 is attached to the second carrier 5 " (Figures 5 (i) and 0), and the remaining fre The side of the third carrier 5 '"is connected to the remaining free side of the first carrier 5' (FIG. 5 (k) and FIG. 5 (1)).
    FIG. 6 shows a representation of a possibility for particularly exact positioning of the inlet 3 and outlet optics 4 and of the diaphragm devices 9a and 9b. For this purpose, the projection device 1 is selectively illuminated, if e.g. the outlet optics 4 is to be placed on the carrier 5 or via the diaphragm device 9b. Experience has shown that the positioning of the exit optics 4 with respect to the diaphragm device 9b is particularly critical for the prevention of undesired aberrations and the tolerance sensitivity is highest in this step and deviations are less than 20 μm. Therefore, it can be provided that, on the one hand, position marks 10 are provided, which are arranged on the support 5 or projected onto it and can be optically detected in order to be used as a reference when attaching the exit optics 4. Alternatively or additionally, the diaphragm devices 9a or 9b or the lens contour of the optics 3 or 4 itself can also be detected optically and used as a reference. Of course, the referencing also in the attachment of the other aforementioned components, such as the
    Entry optics 3 or the aperture devices 9a or 9b done. Also, the aperture devices 9a and / or 9b need not necessarily be provided. For the purpose of better visualizing the reference features, e.g. the position mark or the diaphragm devices 9a and / or 9b can be provided that the projection device 1 is illuminated, in particular transilluminated, for example, with illumination masks 11 can be provided for targeted illumination, specifically specify or limit the light incident on the projection device 1. Alternatively, reference numeral 11 may also represent an image plane of a recognizer into which the respective brands or features for aligning the individual components are imaged.
    By means of the projection device 1 according to the invention, aberrations of light which enters the exit optics 4 via the entrance optics 3 and projected thereon, for example, onto a roadway, can be largely avoided.
    FIG. 7 shows a representation of a possibility for the exact positioning of an entry optics 3 on a first carrier 5 ', as can be done, for example, in a projection device 1 according to FIG. 5 (c), wherein position marks 10 and / or other reference features are optically similar to FIG recorded and used to align the individual components to each other.
    In view of this teaching, one skilled in the art will be able to arrive at other, not shown embodiments of the invention without inventive step. The invention is therefore not limited to the embodiments shown. Also, individual aspects of the invention or the embodiments can be picked up and combined with each other. Essential are the ideas underlying the invention, which can be performed by a person skilled in the knowledge of this description in a variety of ways and still remain maintained as such.
    权利要求:
    Claims (23)
    [1]
    claims
    1. Projection device (1) for a motor vehicle headlight, wherein the projection device (1) for imaging light of at least one of the projection device (1) associated light source (2) is arranged in an area in front of a motor vehicle in the form of at least one light distribution, wherein the projection device ( 1) comprises: an entry optic (3) which has a number of micro entrance optics (3a), which are preferably arranged in an array, an exit optic (4) which has a number of micro exit optics (4a), which are preferably arranged in an array, wherein each micro-entry optics (3a) is associated with exactly one micro-exit optics (4a), wherein the micro-entry optics (3a) formed and / or the micro-entry optics (3a) and the micro Exit optics (4a) are arranged to each other such that substantially all of the light emerging from a micro-entry optics (3a) light only in the associated Micro-exit optics (4a) enters, and wherein the light preformed by the micro-entry optics (3a) is imaged by the micro-exit optics (4a) in an area in front of the motor vehicle as at least one light distribution, characterized in that the entrance optics (3 ) as well as the outlet optics (4) are firmly connected to at least one translucent carrier (5, 5 ', 5 ") arranged between the inlet optics (3) and the exit optics (4), the at least one carrier (5, 5', 5 ") at least partially made of glass.
    [2]
    2. Projection device (1) according to claim 1, wherein between the entrance optics (3) and the exit optics (4) two opposing spaced-apart support (5 ', 5 ") are arranged, wherein the entrance optics (3) and the exit optics (4 ) are each firmly connected to one of the carriers (5 ', 5 ").
    [3]
    3. projection device (1) according to claim 2, wherein the entrance optics (3) and the exit optics (4) each have at least one optical axis, wherein the optical axes are oriented parallel to each other, wherein one of the two carriers (5 ', 5 ") with respect to the remaining carrier (5) is displaceable normal to one of the optical axes.
    [4]
    4. Projection device (1) according to claim 2, wherein between the two opposite, the entry optics (3) and the exit optics (4) carrying carriers (5 ', 5 "), a third transparent carrier (5'") is arranged with which the first two supports (5 ', 5 ") are firmly connected.
    [5]
    5. Projection device (1) according to claim 1, wherein between the entrance optics (3) and the exit optics (4) exactly one carrier (5) is arranged, wherein both the entrance optics (3) and the exit optics (4) on opposite sides of the carrier with the carrier (5) are firmly connected.
    [6]
    6. projection device (1) according to claim 5, wherein the entrance optics (3) and / or the exit optics (4) integral with the carrier (5) is formed.
    [7]
    7. Projection device (1) according to one of the preceding claims, wherein the fixed connection of the entrance optics (3) and the exit optics (4) with the at least one carrier (5, 5 ', 5 ") is in each case designed as a transparent adhesive bond.
    [8]
    8. projection device (1) according to claim 7, wherein the thickness of the adhesive joint in the direction of the optical axis of the entrance or exit optics (3, 4) is a maximum of 20 microns and the ratio of refractive indices of the material used for the adhesive bond in the cured state of the adhesive bond and the material of the carrier is between 0.9 and 1.1.
    [9]
    9. projection device (1) according to any one of the preceding claims, wherein on the inlet optics (3) facing side (5a) at least one carrier (5, 5 '), a diaphragm device (9a) is arranged.
    [10]
    10. Projection device (1) according to one of the preceding claims, wherein on a side facing away from the entrance optics (3) (5b) at least one support (5, 5 ') an aperture device (9a) is arranged.
    [11]
    11. Projection device (1) according to one of the preceding claims, wherein on the exit optics (4) facing side (5b) at least one support (5, 5 ', 5 "), a diaphragm device (9a, 9b) is arranged.
    [12]
    12. Projection device (1) according to one of the preceding claims, wherein on the outlet optics (4) facing away from (5b) at least one support (5, 5 ', 5 "), a diaphragm device (9a, 9b) is arranged.
    [13]
    13. Projection device (1) according to one of claims 9 to 12, wherein at least one diaphragm device (9a, 9b) as an on the at least one support (5, 5 ', 5 ") vapor-deposited opaque metal layer for forming the light image of the projection device (1 ) is trained.
    [14]
    14. Projection device (1) according to one of claims 9 to 12, wherein at least one diaphragm device (9a, 9b) as an on the at least one support (5, 5 ', 5 ") printed opaque lacquer layer for forming the light image of the projection device (1). is trained.
    [15]
    15. Projection device (1) according to one of the preceding claims, wherein the carrier (5, 5 ', 5 ") consists entirely of transparent glass.
    [16]
    16. Projection device (1) according to one of the preceding claims, wherein the micro-entry optics (3a) and / or the micro-exit optics (4a) consists of plastic.
    [17]
    17 microprojection light module (6) for a motor vehicle headlamp, comprising at least one projection device (1) according to one of the preceding claims and at least one light source (2) for feeding light into the projection device (1).
    [18]
    18. A vehicle headlight, in particular a motor vehicle headlight, comprising at least one microprojection light module (6) according to one of claims 1 to 17.
    [19]
    19. Vehicle, in particular motor vehicle, with at least one vehicle headlight according to claim 18.
    [20]
    20. A method for producing a projection device (1) for a motor vehicle headlight, wherein the projection device (1) for imaging light of at least one of the projection device (1) associated light source (2) is arranged in an area in front of a motor vehicle in the form of at least one light distribution comprising the following steps: a) applying a first diaphragm device (9a) on a first flat side (5a) or a second flat side (5b) of a flat translucent carrier, wherein the carrier (5) consists at least partially of glass, b) attaching or applying an entrance optic (3) comprising a number of micro entrance optics (3a), preferably arranged in an array, on the first flat side (5a) of the support (5, 5 '), the entrance optics (3) being the first Aperture device (9a) is at least partially covered and arranged such that light through the entrance optics (3) through the first Aperture device (9a) at least partially enter the at least carrier (5, 5 ') or at least partially escape after entry and passage through the carrier (5, 5') through the first diaphragm device, and the attachment of the entrance optics (3) c) applying a second diaphragm device (9a, 9b) on a second flat side (5b) of the carrier opposite the first flat side (5a) (5b) of the at least one carrier (5, 5 ') 5) or on a flat side of a further carrier (5 "), d) attaching or applying an exit optics (4), which has a number of micro exit optics (4a), which are preferably arranged in an array, on the second flat side ( 5b) of the carrier (5) or the further carrier (5 "), wherein the exit optics (4) the second aperture device (9b) at least partially covered and arranged in such a way that the carrier (5) or the we light passing through the second diaphragm device (9b) into the outlet optics (4) and can exit through the outlet optics (4) or via the second diaphragm device (9b) into the carrier (5) or the other Carrier (5 ") entering light through the support (5) or the other carrier (5") and exit through exit optics (4) and the attachment of the exit optics (4) on the second flat side (5b) of the carrier (5 ) or on a flat side of the further carrier (5 ") by means of a translucent adhesive.
    [21]
    21. The method of claim 20, wherein prior to the implementation of step b), the position of the first diaphragm device (9a) is optically detected and the attachment of the entrance optics (3) according to the subsequent step b) taking into account the optical detection of the position of the first diaphragm device (9a) takes place.
    [22]
    22. The method of claim 20 or 21, wherein before the implementation of step d) the position of the second diaphragm device (9b) is optically detected and the attachment of the exit optics (4) according to the subsequent step d) taking into account the optical detection of the position of second diaphragm device (9b) takes place.
    [23]
    23. The method according to any one of claims 20 to 22, wherein the thickness of the adhesive joint in the direction of an optical axis of the entrance (3) or exit optics (4) is a maximum of 20 microns and the ratio of refractive indices of the material used for the adhesive bond in the cured state the adhesive bond and the material of the carrier is between 0.9 and 1.1.
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    法律状态:
    优先权:
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    ATA50688/2016A|AT518905B1|2016-07-29|2016-07-29|Projection device for a motor vehicle headlight and method for its production|ATA50688/2016A| AT518905B1|2016-07-29|2016-07-29|Projection device for a motor vehicle headlight and method for its production|
    EP17181998.0A| EP3282181B1|2016-07-29|2017-07-19|Microoptic lenses on glass with printed diaphragm - concept and production method|
    CN201710630503.0A| CN107664291A|2016-07-29|2017-07-28|Micro optical lens and manufacture method on the glass of radiation diaphragm design with marking|
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