• 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 light-guiding element (1) for a laser vehicle headlamp (2), wherein the laser vehicle headlamp (2) comprises at least one laser light source (3) and at least one luminescent element that can be irradiated by the laser light source (3) and thus excited for the emission of visible light (4). The light-guiding element (1) has a first side (10), which is formed at least partially as a light entry surface (5), and a second side (20), which is arranged opposite the first side (10) and at least partially formed as a light exit surface (6) and the at least one receptacle (7) for at least one luminous element (4) is assigned, wherein the light inlet surface (5) at least one in the direction of the interior of the Lichtleitelements (1) oriented, light from the light entrance surface (5) in the direction of recording (7) for the luminous element (4) reflecting the first reflection region (50) is associated, and wherein the light exit surface (6) at least one in the direction of the interior of the Lichtleitelements (1) oriented, light from the luminous element (4) in the direction of the light exit surface (6 ) Reflective second reflection region (60) is assigned. The invention further relates to a vehicle headlamp (2) with at least one such light-guiding element.
    公开号:AT512590A1
    申请号:T50071/2012
    申请日:2012-03-12
    公开日:2013-09-15
    发明作者:Friedrich Bauer
    申请人:Zizala Lichtsysteme Gmbh；
    IPC主号:
    专利说明:

    PI2414
    Light lattice element for a laser vehicle headlight
    The invention relates to a light-guiding element for a laser vehicle headlamp, wherein the laser vehicle headlamp comprises at least one laser light source and at least one light element that can be irradiated by the laser light source and thus be excited to emit visible light. The invention also relates to a vehicle headlamp having at least one laser light source and at least one illuminating element which can be irradiated by the laser light source and thus be excited to emit visible light, with at least one such light guiding element.
    Various types of vehicle headlights are known in the prior art, with headlamps with discharge lamps and halogen light sources being used in recent years predominantly. For energy saving reasons and to further reduce the space requirement of vehicle headlamps, the use of laser light sources such as semiconductor lasers is being increasingly tested since they are advantageous in this regard. In order to make the laser light usable for a vehicle headlight, a light source, a so-called phosphor converter (eg a phosphorus compound, a YAG crystal with cerium doping, etc.), is irradiated with a laser light source, thereby radiating visible light is stimulated. The phosphor converter thus converts laser light into light of other wavelengths.
    In this case, free-jet concepts are frequently used in which the laser light source is arranged at a distance from the luminous element and the laser light travels a free path before impinging on the luminous element. In such a case, it is necessary that the laser light impinges exactly on the luminous element - on the one hand, in order to exploit the radiated power as well as possible, on the other hand for safety reasons. The laser light sources used emit powers of currently up to 3 W and more, in the event of a Fehlbonbon (for example, if the light element is not optimally hit) may result from high-intensity eye-damaging laser light radiation to injury, but in any case to endanger other road users.
    It is therefore an object of the invention to provide a solution for laser vehicle headlamps which overcomes the above-mentioned problems of the prior art.
    P12414 -2-
    This object is achieved with an aforementioned Lichtleitelement according to the invention that the light guide a first side, which is at least partially formed as a light entrance surface, and a first side of the opposite side disposed second side, which is at least partially formed as a light exit surface and the at least one receptacle for the at least one luminous element is assigned, wherein the light entry surface is associated with at least one oriented in the direction of the interior of the light guide, light from the light entrance surface in the direction of the recording for the light emitting element reflective first reflection region, and wherein the light exit surface at least one in the direction of the interior of the Lichtieitelements oriented, light from the light emitting element in the direction of the light exit surface reflective second reflection region is associated.
    On the one hand, the invention makes it possible to compensate for positioning errors of the light guide element or of the luminous element arranged therein with respect to the laser light source, since, due to the first reflection region, also light which does not strike the luminous element precisely is deflected onto the luminous element. On the other hand, a complete exploitation of the light emitted by the luminous element is made possible because the second reflection region deflects light emitted by the luminous element towards the light exit surface - this light component would otherwise not be usable. The reflective property of the reflection ranges arises, inter alia, due to the total reflection at the interface light guide element environment.
    Thanks to the solution according to the invention, therefore, both the high demands on the mounting of the luminous element relative to the laser light source can be reduced and thus fulfilled (for example, also during shaking during operation by vibration load, resonances, thermal expansion, etc.) and a greater luminous efficacy can be ensured.
    The light-guiding element preferably consists of a transparent material such as glass or plastic - the light-guiding element is embodied, for example, in one piece as a volumetric body, that is to say it consists of a material throughout. But it can also be designed as a hollow body.
    Advantageously, the second reflection region is predominantly arranged on the side of the light-guiding element -3- PI2414 facing the laser light source in the mounted state. In particular, light which is emitted by the luminous element in the direction of the light entry surface can thus be deflected in the direction of the light exit surface and thereby made usable. Under "predominantly " Here, it is to be understood that more than half of the second reflection area is arranged on the side of the light guide element facing the laser light source in the assembled state of the light-transmitting element.
    The reflection areas can in principle be arbitrary. For example, the first reflection region can be configured in such a way that incident light is deflected by means of total reflection. In a variant of the invention, the reflection regions are each formed as at least one reflection layer applied to the outside of the light guide element, which is preferably covered with an absorption layer. In this case, correspondingly reflective or absorbing layers can be applied by vapor deposition, painting or else by the mechanical fastening (for example gluing) of corresponding cover parts.
    According to one embodiment of the invention, the light-guiding element is designed as a free-form surface in the region of the first and / or the second reflection region. The first and / or the second reflection region is advantageously designed with at least one focal point. The execution of free-form surfaces is known in the art. In combination with the reflection layer, the reflection ranges can thus be adapted to the respective requirement. The formation of the outer region of the Lichtieitelements in combination with the reflective layer allows the effect of the invention. In addition to the design as a freeform surface, other designs, for example as a paraboloid surface, are also possible. Conveniently, the second reflection region has at least one focal point in the region of the light exit surface. In this way, the luminous flux of the light distribution can be increased since the provision of a focal point in the region of the light exit surface creates a virtual light source. Of course, other foci can be provided.
    The receptacle for the luminous element is designed as a blind hole or as completely surrounded by the light guide cavity. The lighting element can thus be arranged in the light guide. This has the advantage that during assembly only the light guide in
    With respect to the laser light source must be accurately mounted - the optimal position of the light-emitting element is thus simultaneously ensured, since the light-emitting element is held in the light guide In the embodiment of the recording as a blind hole, the light element can be replaced if necessary, the light guide can be used. When executed as a completely surrounded cavity, the light-emitting element can be protected from environmental influences. By providing the receptacle, the luminous element is in the assembled state "below". arranged the light exit surface in the light guide
    In particular, when using the light guide in a vehicle headlamp, it is advantageous if no unwanted false light is emitted, which could then distort the photo. In a variant of the invention, the outside of the light-guiding element, with the exception of the light entry, the light exit surface and the reflection regions, is provided at least regionally, but in particular completely, with an opaque and / or reflective coating. This can be prevented that light is emitted off the light exit surface of the light guide. The coating can be applied for example by painting or steaming. If the coating is carried out in a reflective manner, it can advantageously support the decoupling of the light emitted by the luminous element via the light exit surface.
    With the solution according to the invention also different light functions can be realized. In a further variant of the invention, the second side is at least partially covered by an opaque limiting element, which is preferably arranged in the region of the receptacle for the at least one luminous element. This opaque limiting element may for example be designed as a coating in the form of painting or vapor deposition, but it may also be a separate component glued or otherwise applied. This limiting element (possibly in conjunction with a free-form reflector surface - see below) can be used to produce a dipped beam with a sharp light-dark transition.
    The object of the invention is also achieved by an aforementioned vehicle headlamp according to the invention in that between the laser light source and the luminous element is arranged at least one Lichtieitelement according to the variants described above. The invention as described above thus allows the realization of a vehicle headlamp, which can meet the statutory provisions such as ECE, SAE, CCC, etc.
    In a variant of the invention, as seen in the main emission direction of the vehicle headlight, the laser light source is arranged in front of the luminous element, so that the light of the laser light source is emitted counter to the main emission direction of the vehicle headlight. In this variant, in particular the risk of uninvolved road users by the laser beam is prevented when it comes to a malfunction of the headlamp - because the laser beam runs counter to the main beam direction, he can not stand out of the spotlight uncontrolled.
    As an additional security element, at least one aperture element is favorably provided, with which light reflected from the light entry surface of the light guide element or from the interior of the light guide element in the main emission direction of the vehicle headlamp can be shielded. According to a variant of the invention, the diaphragm element is designed as a connecting piece running between the laser light source and the light-guiding element, which, in particular, has a tubular or semi-tubular shape. With the diaphragm element, the radiation can be prevented in particular from laser light in the direction outside of the vehicle headlight. For this purpose, the diaphragm element can be coated, for example, with an anti-reflective or absorbent coating, or it can surround the relevant regions of the light-guiding element.
    In the following the invention will be explained in more detail with reference to a non-limiting embodiment, which is illustrated in the drawing. In this shows schematically:
    1 shows a cross-sectional view of a first variant of the light-guiding element according to the invention;
    FIG. 2 shows a cross-sectional view of a second variant of the light-conducting element according to the invention; FIG. and
    3 is a cross-sectional view of a vehicle headlamp with a light guide according to the invention. -6- PI2414
    In the following figures, the same elements are provided with the same reference numerals for reasons of clarity. Terms used below include "top", "bottom", "front" and "behind" refer to a mounted state in a vehicle, so if the light guide 1 is in use in a vehicle headlight 2, wherein the vehicle headlight 1 is installed on the front side in a vehicle
    In Fig. 1, a first variant of the light-guiding element 1 according to the invention is shown. The light-guiding element 1 is used, for example, in a laser vehicle headlight 2 (see FIG. 3), specifically between a laser light source 3 and a light-emitting element 4 which is illuminated by the light emitted by the laser light source 3 for the emission of visible light, in particular white color. is stimulated. In Fig. 1, a laser light source 3 is set in two different positions, as will be explained in more detail below.
    The light-guiding element 1 is preferably made of a transparent material such as glass or plastic. It can be designed as a one-piece volumetric body, in a variant but also as a hollow body. It is also possible to combine several volume bodies made of different materials.
    The light-conducting element 1 has on a first side 10, which is in the mounted state, as indicated in Fig. 1, on the side of the laser light source 3, a light entrance surface 5. Via the light-emitting surface 5, which occupies part of the first side 10, laser light coming from the laser light source 3 can be irradiated into the light-guiding element 1.
    On a second side 20 of the light-guiding element 1, which is arranged opposite the first side 10, there is a light exit surface 60, which forms part of the second side 20. Furthermore, the second side 20 is assigned a recess 7 for a lighting element 4. The recess 7 is executed in the illustrated embodiment as a blind hole, but may for example be designed as completely surrounded by the light guide 1 cavity.
    The light entry surface 5 is associated with a first reflection region 50 oriented in the direction of the interior of the light guide element 1. In the region of the first reflection region 50, the light-guiding element 1 or its outer side is designed as a free-form surface. Via the first reflection region 50, light incident through the light-emitting surface 5 is directed toward the -7-P12414
    Recording 7 for the light-emitting element 4 reflected. As a result, positioning errors between the light guide element 1 and the laser light source 3 can be compensated, or thanks to the first reflection region 50, a positioning accuracy that can be achieved during use can be achieved. FIG. 1 shows the laser light source 3 in two positions A, B. Position A is the laser light source 3 positioned so that the light beam 200 is incident directly on the light-emitting element 4
    Position B represents a situation in which the relative positioning between laser light source 3 and light emitting element 1 is not optimal. In position B, the light beam 200 is incident at a certain angle of deviation compared to the position A. The deviation angle 400 thus denotes the angle between the "optimal" Light beam path with laser light source 3 in position A and a slightly shifted light beam path with laser light source 3 in position B. Such a situation can occur, for example, when there is a shift of the laser light source 3 due to shocks during operation or by an im replacement of the light source If the laser light source 3 is in position B, the light beam 200 'does not impinge directly on the luminous element 4, but on the first reflection area 50, from which it is reflected in the direction of the receptacle 7 for the luminous element 4. For example, total reflection occurs in the first reflection region 50; in variants of the invention, however, a reflective coating can also be provided on the outside of the light-conducting element 1 in the region of the first reflection region 50.
    The incident light therefore does not have to impinge perpendicularly on the light entry surface 5, but can be noticed within an acceptance angle. The acceptance angle denotes the maximum angle at which light can be incident and still be directed to the luminous element 4. Light incident at an angle greater than the acceptance angle is either reflected directly at the light entry surface 5 or deflected in a manner in the light emitting element 1 such that it does not reach the luminous element 4. The deviation angle 400 must therefore be less than or equal to the acceptance angle for a proper function.
    The design of the light entry surface 5 and the first reflection region 50 thus increases the tolerances !, with which the light of the laser light source 3 irradiates onto the light element 4 and thus facilitates the construction of a laser vehicle headlight 2 on the one hand
    P12414 -8- (see Fig. 3), on the other hand, the vibrations occurring during operation are less significant
    The light exit surface 6 on the second side 20 of the light guide element 1 is associated with a second reflection region 60 oriented in the direction of the interior of the light guide element 1. As in the case of the first reflection region 50, the light-guiding element 1 is also formed in the region of the second reflection region 60 as a free-form surface of known type. In principle, the light-guiding element 1 can also be embodied differently both in the region of the first 50 and the second reflection region 60, for example as a paraboloid surface or otherwise.
    In the exemplary embodiment illustrated, the second reflection region 60 is arranged predominantly on a side of the light-guiding element 1 facing the laser light source 3 in the mounted state of the light-guiding element 1. The second reflection region 60 reflects light emanating from the luminous element 4 in the direction of the light exit surface 6. This makes possible the most complete possible utilization of the visible light emitted by the luminous element 4 - light that is radiated, for example, by the luminous element 4 in the direction of the laser light source 3 would otherwise not be usable ,
    In the illustrated embodiment according to FIG. 1, the second reflection region 60 is formed as a reflection layer 8 applied on the outside of the light-conducting element 1. The reflection layer 8 is generated, for example, by painting or vapor deposition. In a variant, however, it can also be designed as a reflection element, which is applied to the light guide element 1 in a form-fitting manner, for example by gluing. The reflection layer 8 is covered on its outside with an absorption layer 9. This has the purpose to effectively prevent radiation through the reflective layer 8 - just when applying by evaporation, it can sometimes lead to coating errors, so that in some places the reflective layer 8 is too thin or may not even exist In such cases, by bringing on the Absorption layer 9 prevents transmission of the reflection layer 8 and thus prevents interference of the light image
    In FIG. 1, such a combination of reflection layer 8 and absorption layer 9 is provided in the second reflection region 60; the first reflection region 50 is constructed without such layers (deflection by means of total reflection). Together with the design of the light-guiding element 1 in the region of the first 50 and second reflection region -9- P12414 60 -in the illustrated embodiment, as described above, in each case as free-floating surface-the reflection properties result.
    The second reflection region 60 is embodied with at least one focal point 11. The focal point 11 is located in the area of the light exit surface 6. This results in addition to the light element 4 as a real light source and a virtual light source at the location of the said focal point 11. Thus, the luminous flux of the light distribution can be increased become.
    In the variant according to FIG. 1, the light-guiding element 1 thus emits visible light both from the luminous element 4 and from the virtual light source at the focal point 11.
    2 shows a second variant of the light-conducting element 1 according to the invention. In this variant, on the one hand, a reflection layer 8 'is also formed in the region of the first reflex region 50 on the outside of the light-guiding element 1
    Furthermore, the second side 20 is provided in the region of the receptacle 7 for the luminous element 4 with an opaque limiting element 13. It is one of several possible embodiments, in principle, the limiting element 13 is provided in regions and can cover different areas of the second side 20. The limiting element 13 serves to influence the radiated light distribution-for example, a low-beam light with a sharp light-dark transition or other light functions can thereby be produced.
    In addition to the described embodiment of the light-guiding element 1 on the reflection regions 50, 60 or the layers optionally applied thereto and the properties of the light-entrance 5 and light exit surface 6, the outside of the light guide 1 at least partially, but in particular completely with an opaque and / or be provided reflective coating. This prevents light from escaping in an uncontrolled manner from the light-guiding element 1 and thus disturbing the light image (for example of a vehicle headlight 2, in which such a light-guiding element 1 is used).
    The shape of the light-guiding element 1 can be chosen differently. According to the variant in FIGS. 1 and 2, the light-guiding element body in the region of the first reflection region 50 is designed as a free-form surface similar to a rotation parabloid, in the region of the second -10-P12414
    Reflection region 60 as a free-form surface similar to an ellipsoidal shape. The execution of free-form surfaces of other types is possible, so that so that the photograph meets the legal requirements or homogeneity requirements.
    Fig. 3 shows a fragmentary cross-sectional view of a vehicle headlamp 2 with a light guide element 1 described above. Only the essential features for the understanding of the invention are shown, as the expert the other elements of a vehicle headlamp are known.
    The vehicle headlight 2 comprises a laser light source 3, which radiates, for example, in a wavelength range between 200 nm and 450 nm, that is teuweise in the non-visible UV range. The radiated power of the laser light source 3 is between 0.5 and 2 W, but may be higher. The laser light source 3 is, for example, a semiconductor laser in the form of a laser diode. It is also possible to provide a plurality of laser light sources 3, for example in the form of laser diode arrays.
    The laser light source 3 has to dissipate the heat generated during operation in the illustrated embodiment, a heat sink 15 and a ventilation device 16 - the ventilation device 16 serves here, the cooling body 15 to supply cool air or dissipate heated air. The ventilation device 16 may for example comprise a ventilation device. The heat sink 15 may be made of a suitable material and in addition, for example, cooling fins or the like. exhibit.
    In addition to the laser light source 3 (shown in Fig. 3 with heat sink 15 and fan 16), a luminous element 4 is provided which is spherical in the present embodiment. The spherical design is only one of several possible configurations, the light-emitting element 4 can also be designed differently. The luminous element 4 is preferably a phosphor converter, which can be excited by the light of the laser light source 3 in a known manner to emit visible light. In principle, all materials which convert monochromatic laser light into light of other wavelengths (preferably white light) can be used as the phosphorus converter. In principle, the phosphorus converter is thus a light converter - the electrons of the converter material are excited by the laser light into higher energies and emit light of the wavelength corresponding to the difference in level when falling back.
    The luminous element 4 is arranged in a light guide element 1 according to the invention, which is positioned in a reflector 17. The light guide element 1 is the variant according to FIG. 1 - that is, both the light element 4 directly and the rays reflected by the second reflection region 60 contribute to the light distribution emitted via the reflector 17. Of course, the variant according to FIG. 2 or other embodiments can also be used.
    The reflector 17 directs the light emitted by the luminous element 4 in the main emission direction 100 of the vehicle headlight 2. The main emission direction 100 in the present example in FIG. 3 runs from left to right. The reflector 17 may be arranged pivotable and / or adjustable, which is not daTgestellt in the figures for reasons of clarity. Basically, any embodiments of the reflector 17 are possible, it can free-form variants as well as parabolas, hyperbola, ellipses or combinations thereof come as a reflector surface are used. The reflector 17 is shown in cross section in FIG. 3 and may be in the form of a half shell (only the upper or lower half is present) or as a full reflector, with a number of variants for the reflector 17 being known to the person skilled in the art
    In the illustrated variant of the invention, the luminous element 4 is arranged on the optical axis 200 of the vehicle headlight 2 in a focal point of the reflector 17. It should be noted that the reflector 17 may also be designed as an open-space reflector with a plurality of different focal points, wherein according to the illustrated embodiment, the light-emitting element 4 is arranged precisely in one of these focal points. Of course, it is not absolutely necessary that the light-emitting element 4 is arranged in a focal point - but it must remain stationary to achieve a desired light distribution in the reflector, which should be ensured even when shaken. The vehicle headlight 2 is closed by a cover 18. The cover 18 may be arbitrary, but is preferably largely transparent.
    The desired light pattern of the vehicle headlight 2 is generated by the light guide element 1, the luminous element 4 arranged therein and the reflector 17. Also allows
    For example, when the light source 3 is replaced due to the repair or when the laser light source 3 is no longer in the optimum position due to vibrations during operation, the light guide element 1 according to the invention has greater tolerances with respect to the relative positioning between laser light source 3 and luminous element 4. At the same time, the use of the light emitted by the light guide 4 forward, ie in the main emission 100 of the vehicle headlamp 2 light is possible.
    For fixing the light-guiding element 1 in the reflector 17, a carrier element 19 is provided - the carrier element 19 is here provided with cooling ribs 21, which serve to dissipate the heat generated during the light generation in the luminous element 4 and the light-guiding element 1. The cooling fins 21 are only one example of heat sinks that may be used herein - the skilled person is aware of a number of possibilities in this respect, so will not be discussed in detail here.
    The laser light source 3 and the luminous element 4 are arranged so that the light of the laser light source 3 is emitted counter to the main emission direction 100 of the vehicle headlamp 2. The laser light source 3 is therefore arranged in the main emission direction 100 of the vehicle headlamp 2 in front of the luminous element 4, so that the light of the laser light source 3 is emitted counter to the main emission direction 100 of the vehicle headlamp 2. The beam direction 300 of the laser light source 3 thus runs opposite to the main emission direction 100 of the vehicle headlight 2. This prevents that in the event of damage to the vehicle headlight 2 or a malfunction, the light of the laser light source 3 escape and can endanger other road users.
    The beam direction 300 of the laser light source 3 preferably extends at an acute angle to the main emission direction 100 of the vehicle headlight 2. The angle can therefore be between 0 ° and 90 °. An angle of 0 ° thus means that the laser light source 3 is arranged on the optical axis of the vehicle headlight 2 in the main beam direction 100 behind the light-emitting element 4. Accordingly, an angle of 90 ° means that the beam direction 300 of the laser light source 3 is normal to the optical axis of the vehicle headlight 2. Optical axis and main emission direction 100 of the vehicle headlight 2 are substantially parallel to each other. Depending on the available installation space for the vehicle headlight 2 or the desired field of application, therefore, the light source 3 and light-guiding element 1 -12 P12414 or lighting element 4 can be arranged relative to one another.
    Between the laser light source 3 and the light guide 1 with the luminous element 4, a number of elements can be arranged. For example, in the illustrated embodiment according to FIG. 3, immediately after the laser light source 3, an optical element in the form of a collecting lens element 22 is arranged. Of course, any other optical elements can be used, for example, lenses and / or prisms of various kinds. Conveniently, around such optical or light-guiding elements. 1 arranged absorbing elements to prevent any reflections of the incoming laser light in the main beam direction 100 of the vehicle headlight 2 and thus endanger other road users. As an embodiment of such an element, an aperture element 14 is shown in FIG. It prevents radiation of reflections from the vehicle headlight 2 out. In a variant or in addition, the said optical, light-guiding elements 1 and absorbing elements such as the diaphragm element 14 may also be provided with anti-reflective surfaces or designed so that they only reflect or absorb light in the wavelength range of the laser light, but translucent for visible light are executed and thus allow a look at the headlight components. In this case, irregularities such as inclusions or microstructures can be provided, which deflect the laser light, making it visible from the outside and thus serve as a design element.
    By way of example, the diaphragm element 14 in FIG. 3 is arranged above a horizontal plane passing through the optical axis 200 of the vehicle headlight 2 between the light guide element 1 and the cover plate 18. Of course, other solutions known to the person skilled in the art are possible as well the light functions of the vehicle headlight 2 are not adversely affected.
    The aperture element 14 may also be designed so that it covers the entire free-jet region of the laser light, for example in the form of a tube or a tube with a semicircular cross-section ("half-pipe"). In another variant, it may be semi-mirrored and / or illuminated for design reasons with its own light source (e.g., a blue LED). Such variants are not shown in the figures.
    The invention according to the above embodiments allows the realization of a vehicle headlamp, which can meet the legal requirements such as ECE, SAE, CCC, etc.
    In the vehicle headlight 2 according to the variant in FIG. 3, the waste heat generated during operation of the laser light source 3 can also be used. In the exemplary embodiment according to FIG. 3, the laser light source 3 is arranged beneath a horizontal plane running close to the cover plate 18 below a horizontal plane extending through the optical axis 200 of the vehicle headlight 2 in the installed state of the vehicle headlight 2. The horizontal plane extends in Fig. 3 normal to the plane of the drawing through the optical axis 200 of the vehicle headlight second
    The laser light source 3 is arranged so close to the cover 18 that the cover 18 can be heated by means of the waste heat of the laser light source 3. The waste heat can be used for defrosting and deicing the cover 18. Depending on the used laser light source 3 or depending on the material of the cover 18, etc., it must be decided how close the laser light source 3 to the cover 18 must be positioned. The ventilation device 16 of the laser light source 3 can be used here by supporting the waste heat flow supportive. According to the variant in FIG. 3, the laser light source 3 is positioned below a design aperture element 23 which has corresponding design aperture openings 24 for the passage of the waste heat. These design apertures 24 may according to a variant have a nozzle-like shape, so that caused by the waste heat of the laser light source 3 air flow 25 can be targeted. By nozzle-like shape is here to be understood a shape that allows the steering of the design aperture 24 passing through the air flow 25 in order to achieve the above-mentioned object. Thus, the defrosting and deicing, or more generally the benefits of the waste heat of the laser light source 3 can be done even more efficient.
    Vienna, March 12, 2012
    权利要求:
    Claims (13)
    [1]
    1. Light guide element (1) for a laser vehicle headlight (2), wherein the laser vehicle certificate werter (2) at least one laser light source (3) and at least one by the laser light source (3) irradiated and thus to the radiation light element (4) which can be excited by visible light, characterized in that the light-guiding element (1) has a first side (10) which is at least partially formed as a light entry surface (5) and a second side (10) arranged opposite the first side (10). 20), which is at least partially formed as a light exit surface (6) and at least one receptacle (7) for the at least one luminous element (4) is assigned, wherein the light entry surface (5) at least one in the direction of the interior of the light guide (1 ), light from the light entry surface (5) in the direction of the receptacle (7) for the luminous element (4) reflecting the first reflection region (50) is associated, and w obei the light exit surface (6) at least one in the direction of the interior of the light guide (1) oriented, light from the luminous element (4) in the direction of the light exit surface (6) reflecting the second reflection region (60) is associated.
    [2]
    2. The light guide element (1) according to claim 1, characterized in that the second reflection region (60) is arranged predominantly on the side of the light guide element (1) facing the laser light source (3) in the mounted state of the light guide element (1).
    [3]
    3. Light guide element (1) according to claim 1 or 2, characterized in that the second reflection region (60) and / or the first reflection region (50) as at least one on the outside of the light guide element (1) applied reflection layer (8,8 ') is formed, which is preferably covered with an absorption layer (9,9 ').
    [4]
    4. Light guide element (1) according to one of the preceding claims, characterized in that the light guide element (1) in the region of the first (50) and / or the second reflection region (60) is designed as a free-form surface.
    [5]
    5. light guide element (1) according to claim 4, characterized in that the first (50) and / or the second reflection region (60) with at least one focal point (11) is executed. -16- P12414
    [6]
    6. light guide element (1) according to claim 4 or 5, characterized in that the second reflection region (60) has at least one focal point (11) in the region of the light exit surface (6).
    [7]
    7. light guide (1) according to one of the preceding claims, characterized in that the receptacle (7) for the light-emitting element (4) as a blind hole or as completely surrounded by the light guide (1) surrounded cavity is executed
    [8]
    8. light guide (1) according to any one of the preceding claims, characterized in that the outside of the light guide (1) with the exception of the Lichteintritts- (5), the light exit surface (6) and the reflection regions (50, 60) at least partially, but in particular is completely provided with an opaque and / or reflective coating (12).
    [9]
    9. light guide element (1) according to one of the preceding claims, characterized in that the second side (20) at least partially covered by an opaque limiting element (13), preferably in the region of the receptacle (7) for the at least one luminous element (4 ) is arranged.
    [10]
    10. Vehicle headlight (2) with at least one laser light source (3) [light source array possible] and at least one, by the laser light source (3) can be irradiated and thus stimulated to the emission of visible light luminous element (4), characterized in that between the Laser light source (3) and the luminous element (4) at least one light-guiding element (1) according to one of claims 1 to 9 is arranged.
    [11]
    11. Vehicle headlight (2) according to claim 10, characterized in that the laser light source (3) is arranged in the main emission direction (100) of the vehicle headlamp (2) in front of the luminous element (4), so that the light of the laser light source (3) counter to Main emission direction (100) of the vehicle headlamp (2) is emitted.
    [12]
    12. A vehicle headlamp (2) according to claim 10 or 11, characterized in that at least one aperture element (14) is provided, with the of the light entry surface (5) of the light guide (1) or from the interior of the light guide (1) in Hauptabstrahlrichtung ( 100) of the vehicle headlamp (2) reflected light can be shielded. -17- PI2414
    [13]
    13. A vehicle headlamp (2) according to claim 12, characterized in that the diaphragm element (14) is designed as between the laser light source (3) and the Lichtieitelement (1) extending connecting piece, which is designed in particular tubular or halbrohrför-mig. Vienna, March 12, 2012
    类似技术:
    公开号 | 公开日 | 专利标题
    AT512590B1|2013-11-15|Light guide element for a laser vehicle headlight and vehicle headlights
    EP2825818B1|2016-05-04|Light guiding element for a laser vehicle headlight
    EP2745042B1|2016-02-24|Vehicle headlight with laser light source
    EP2800677B1|2020-07-01|Standard light source laser diode
    DE102010056313C5|2017-03-16|Lighting device of a motor vehicle
    AT512569B1|2014-09-15|Lighting device for a motor vehicle
    DE102010041096A1|2012-03-22|lighting device
    DE102008045032A1|2009-04-16|Vehicle lamp unit
    EP2795183B1|2017-07-12|Optical element for a laser vehicle headlight
    DE102012206397B4|2021-04-15|Lighting device with a screen, one side of which is irradiated by a first light source via a reflector and the other side, which is coated with a luminescent material, is irradiated by a second light source
    DE102007040728A1|2009-03-05|Vehicle headlight for use with light emitting diode lighting system, comprises reflection module, which produces light dark boundary, and light source is provided for emission of radiation, particularly from visible light
    DE102012206394A1|2013-10-24|Lighting device with reflector, lens and aperture
    EP2500630B1|2017-02-01|Transparent lens of a motor vehicle lighting device
    DE102012013841A1|2013-05-16|vehicle headlights
    DE102011006073A1|2012-09-27|Automotive lighting device and motor vehicle headlight with such a lighting device
    WO2016096602A1|2016-06-23|Lighting device with a luminescent material
    WO2015043819A1|2015-04-02|Lighting device for vehicles
    DE102018209303A1|2019-12-12|Optics, optical system and headlights
    WO2019076550A1|2019-04-25|Lighting device for a motor vehicle headlight
    DE102012014734A1|2014-01-30|Vehicle headlight, particularly motor vehicle headlight, has light source arrangement with laser and headlight lens which has body made from transparent material
    DE102011087308A1|2013-05-29|Lighting device with reflector, lens and aperture
    同族专利:
    公开号 | 公开日
    CN104160209A|2014-11-19|
    JP2015513382A|2015-05-11|
    US20150078022A1|2015-03-19|
    MX2014010936A|2014-11-13|
    EP2802807A1|2014-11-19|
    AT512590B1|2013-11-15|
    WO2013134803A1|2013-09-19|
    IN2014MN01972A|2015-07-03|
    JP6108185B2|2017-04-05|
    EP2802807B1|2017-10-18|
    US9677733B2|2017-06-13|
    CN104160209B|2017-06-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2010116305A1|2009-04-09|2010-10-14|Koninklijke Philips Electronics N.V.|Lamp for laser applications|
    US20110148280A1|2009-12-17|2011-06-23|Sharp Kabushiki Kaisha|Vehicle headlamp and illuminating device|DE102015120223A1|2015-11-23|2017-05-24|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Light guide for a vehicle headlight|WO1999029259A1|1997-12-05|1999-06-17|Dec Research|Improvements in and/or relating to delivery devices and their use|
    JP4124445B2|2003-02-03|2008-07-23|株式会社小糸製作所|Light source and vehicle headlamp|
    JP4047266B2|2003-11-19|2008-02-13|株式会社小糸製作所|Lamp|
    JP4729441B2|2006-06-09|2011-07-20|スタンレー電気株式会社|Vehicle lighting|
    JP5118564B2|2008-06-24|2013-01-16|株式会社小糸製作所|Vehicle lighting|
    JP2011129376A|2009-12-17|2011-06-30|Sharp Corp|Light emitting device, lighting system, headlamp for vehicle, and projector|
    JP5530187B2|2010-01-07|2014-06-25|スタンレー電気株式会社|Light source device and lighting device|
    JP2011157022A|2010-02-03|2011-08-18|Sharp Corp|Headlamp and moving body|
    JP5059208B2|2010-04-07|2012-10-24|シャープ株式会社|Lighting device and vehicle headlamp|
    JP5577138B2|2010-04-08|2014-08-20|スタンレー電気株式会社|Vehicle headlamp|
    JP5526452B2|2010-09-10|2014-06-18|スタンレー電気株式会社|Vehicle lamp unit|AT513816B1|2012-12-20|2015-11-15|Zizala Lichtsysteme Gmbh|Light guide unit for a lighting unit of a headlamp and lighting unit and headlamp|
    JP2015005439A|2013-06-21|2015-01-08|スタンレー電気株式会社|Vehicle headlamp and optical fiber bundle used in vehicle headlamp|
    ES2728269T3|2013-10-10|2019-10-23|Ortana Elektronik Yazilim Taah San Ve Tic A S|Optical element for an information system to display information|
    DE102014118403A1|2014-04-07|2015-10-08|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Motor vehicle headlamps|
    DE102014222903A1|2014-11-10|2016-05-12|Automotive Lighting Reutlingen Gmbh|Laser light module for a motor vehicle lighting device|
    GB2535534B|2015-02-23|2018-11-14|Jaguar Land Rover Ltd|Illumination device, method and system|
    FR3038738B1|2015-07-08|2017-08-11|Valeo Vision|OPTICAL DEVICE COMPRISING AT LEAST ONE WAVELENGTH CONVERTER, LIGHT MODULE AND LIGHTING DEVICE FOR MOTOR VEHICLE HAVING SUCH A DEVICE|
    KR101755830B1|2015-08-27|2017-07-10|현대자동차주식회사|Lamp apparatus for a vehicle|
    DE102015226724A1|2015-12-23|2017-06-29|Automotive Lighting Reutlingen Gmbh|Light module for a lighting device of a motor vehicle|
    WO2018051791A1|2016-09-13|2018-03-22|本田技研工業株式会社|Headlight device|
    DE102018101036A1|2018-01-18|2019-07-18|HELLA GmbH & Co. KGaA|Tail light for a motor vehicle|
    US11255508B2|2020-06-15|2022-02-22|Grote Industries, Inc.|Deicing system for an automotive lamp|
    法律状态:
    2016-11-15| HC| Change of the firm name or firm address|Owner name: ZKW GROUP GMBH, AT Effective date: 20161014 |
    2018-11-15| MM01| Lapse because of not paying annual fees|Effective date: 20180312 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50071/2012A|AT512590B1|2012-03-12|2012-03-12|Light guide element for a laser vehicle headlight and vehicle headlights|ATA50071/2012A| AT512590B1|2012-03-12|2012-03-12|Light guide element for a laser vehicle headlight and vehicle headlights|
    PCT/AT2013/050049| WO2013134803A1|2012-03-12|2013-02-28|Light guiding element for a laser vehicle headlight|
    JP2014561226A| JP6108185B2|2012-03-12|2013-02-28|Light guide member for vehicle laser headlamp|
    US14/384,243| US9677733B2|2012-03-12|2013-02-28|Light guiding element for a laser vehicle headlight|
    CN201380014088.6A| CN104160209B|2012-03-12|2013-02-28|For the photocon of laser headlight for vehicles|
    EP13714181.8A| EP2802807B1|2012-03-12|2013-02-28|Laser vehicle headlight|
    MX2014010936A| MX2014010936A|2012-03-12|2013-02-28|Light guiding element for a laser vehicle headlight.|
    IN1972MUN2014| IN2014MN01972A|2012-03-12|2014-10-01|
    [返回顶部]