EP2825818B1 - Lichtleitelement für einen laser-fahrzeugscheinwerfer - Google Patents
Lichtleitelement für einen laser-fahrzeugscheinwerfer Download PDFInfo
- Publication number
- EP2825818B1 EP2825818B1 EP13714182.6A EP13714182A EP2825818B1 EP 2825818 B1 EP2825818 B1 EP 2825818B1 EP 13714182 A EP13714182 A EP 13714182A EP 2825818 B1 EP2825818 B1 EP 2825818B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- laser
- guiding element
- vehicle headlight
- light guiding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/13—Ultraviolet light; Infrared light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/135—Polarised
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/16—Laser light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/70—Prevention of harmful light leakage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/42—Forced cooling
- F21S45/43—Forced cooling using gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/60—Heating of lighting devices, e.g. for demisting
Definitions
- the invention relates to a laser vehicle headlight with a light guide element for a laser vehicle headlight according to claim 1.
- a light source e.g. a phosphorus compound, a YAG crystal with cerium doping, etc.
- a so-called phosphor converter 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.
- 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.
- the laser light 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 case of a malfunction (for example, if the light element is not optimally hit) may result from high-intensity eye-damaging laser light radiation to injuries, but in any case to endanger other road users.
- US 2011/0292636 A1 discloses a generic laser vehicle headlamp with a light guide for a laser vehicle headlamp.
- This object is achieved with an aforementioned laser vehicle headlamp with a light guide for a laser vehicle headlamp according to the invention that the luminous element is arranged in the light guide and that the limiting element is applied to the light guide.
- the invention allows the compensation of positioning errors of the luminous element with respect to the laser light source and ensures even with slight deviations that the irradiated laser light hits the luminous element and is not distracted uncontrolled or possibly endanger other road users.
- the in the mounted state of the laser light source facing the light entry surface is larger than the light exit surface and thus collects the incoming radiation, which are directed by the reflective inner surface to the light emitting element.
- both the high demands on the mounting of the luminous element relative to the laser light source can be reduced and thereby fulfilled, as well as the dimensional stability of the parts used in a laser vehicle headlamp during use (eg vibration load, resonance, strength, thermal expansion, ...) be ensured.
- the inner surface here designates the interior (or the one oriented in the direction of the light-guiding element interior) of the lateral surface between the light entry surface and the light exit surface.
- the light-guiding element has a substantially circular cross-section, that is, the light-entry surface has a larger diameter than the light-emitting surface.
- 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.
- the reflective inner surface results in particular due to the total reflection at the interface light guide element environment.
- the acceptance angle of the light-guiding element is between 0 ° and 45 ° with respect to the optical axis of the light-guiding element.
- the light-guiding element is set up to reflect or concentrate light which impinges on the light-entry surface at an angle between 0 ° and 45 ° with respect to the optical axis, in the direction of the light-exit surface.
- the light guide according to the invention allows high tolerances with respect to the positioning of the laser light source and the luminous element to each other.
- the reflective inner surface of the light-guiding element is designed essentially as a paraboloid or as a free-form surface.
- the formation as a paraboloid can in particular also take the form of a paraboloid of revolution. Depending on the exact application, the inner surface is thus shaped with the desired reflection properties.
- the outside of the light-guiding element in the region between the light-entry surface and the light-emitting surface is expediently provided at least in regions, but in particular completely, with an opaque 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.
- At least one receptacle for the luminous element is provided in the region of the light exit surface, wherein the receptacle is designed in particular as a blind hole or as a hollow completely surrounded by the light guide element.
- the lighting element is thus arranged in the light guide.
- the light exit surface is at least partially covered by an opaque limiting 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.
- At least one reflector element extending around the light guide element is arranged between the light entry surface and the light exit surface, preferably in the area of the light exit surface, for deflecting the light emitted by the light element in a direction away from the light entry surface.
- the light emitted by the luminous element can be used photometrically - e.g. in connection with the above-mentioned limiting element for the realization of a low beam.
- a reflector element is advantageous because, for example, when using the light-guiding element in a vehicle headlight, the light emitted by the light-emitting element can be optimally directed into a main reflector of the vehicle headlight. At the same time an uncontrolled leakage of light from the headlight is prevented, or a better utilization of the light emitted by the light emitting element possible.
- the object of the invention is further 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 light guide element as described above.
- the laser light source is arranged in the main emission direction of the vehicle headlamp 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 headlamp.
- the risk of uninvolved road users by the laser beam is prevented when it comes to a malfunction of the headlight - because the laser beam runs counter to the main beam direction, he can not radiate uncontrolled from the headlight.
- the invention allows the realization of a vehicle headlamp, which can meet the legal requirements such as ECE, SAE, CCC, etc.
- At least one diaphragm element is 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.
- the diaphragm element is designed as a connecting piece running between the laser light source and the light-guiding element, which is designed in particular as a tubular or semi-tubular shape.
- the radiation can be prevented in particular from laser light in the direction outside of the vehicle headlight.
- 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.
- Fig. 1 a first variant of the light-guiding element 1 according to the invention is shown.
- the light guide 1 comes in a laser vehicle headlight 2 (see
- Fig. 4 is used, between a laser light source 3 and a luminous element 4, which is excited by the incident light from the laser light source 3 for the emission of visible light in particular white color.
- the light guide 1 has a light entrance surface 5 and a light exit surface 6.
- the inlet cross-sectional area of the light entry surface 5 is greater than the exit cross-sectional area of the light exit surface 6 - if, for example, as in the present embodiment, the light guide 1 has a substantially circular cross-section, so the entrance surface radius 50 is greater than the exit surface radius 60th
- Irradiated light (from the laser light source 3) is focused on the running between the inlet 5 and the exit surface 6 inner surface 7 to the light exit surface 6 out. This is done predominantly by total reflection at the interface between the light guide 1 and the surrounding medium, which is predominantly ambient air. In the area of the light exit surface 6 is then the luminous element 4 (see Fig. 4 ), which is excited by the collimated laser light to emit visible, preferably white light.
- the incident light does not have to impinge perpendicularly on the light entry surface 5, but can be noticed within an acceptance angle 300.
- the acceptance angle 300 denotes the angle to the optical axis 100 of the light guide 1.
- An acceptance angle of 0 ° results when the light exactly parallel to the optical axis 100 (and thus perpendicular to the light entrance surface 5) is incident.
- the acceptance angle 300 is in the present embodiment between 0 ° and 45 °.
- Light incident under this acceptance angle range (that is, between 0 ° and 45 °) is converged toward the light exit surface 6.
- Light incident at an angle greater than the acceptance angle is either reflected directly at the light entry surface 5 or enters the light guide element 1, but is then reflected back and forth so that it exits again at the light entrance surface 5 and not the light exit surface 6 reached.
- the light guide 1 thus increases the tolerances with which the light of the laser light source 3 (see Fig. 4 ) to the luminous element 4 ( Fig. 4 ) irradiates and thus facilitates the one hand, the construction of a laser vehicle headlamp 2, on the other hand, the vibrations occurring during operation are less significant.
- the inner surface 7 of the light-guiding element 1 is designed essentially as a paraboloid or as a free-form surface. Furthermore can, as in Fig. 1 illustrated, the outside of the light guide 1 in the region between the light entrance surface 5 and the light exit surface 6 with an opaque and / or reflective coating 8 may be provided. This coating 8 may cover the specified area in areas or even completely.
- the coating 8 is designed, for example, as a coating, vapor deposition or form-fitting envelope.
- the light-guiding element 1 can be tube-shaped, that is to say hollow, but it can also be made as a one-piece volumetric body.
- the material used is various transparent materials such as glass, plastic, etc. in question.
- a receptacle for a luminous element 4 is provided in the area of the light exit surface 6, a receptacle for a luminous element 4 is provided.
- a receptacle for a luminous element 4 is provided in the area of the light exit surface 6, but it can also be provided receptacles for several lighting element 4, or several lighting elements 4 are spent in a recording.
- Fig. 1 is the receptacle for the light-emitting element 4 designed as a blind hole 9
- the variant in Fig. 2 provides a completely surrounded by the light guide 1 cavity 10 before.
- the luminous element 4 is struck by the collimated laser light and excited to emit visible light. This visible light then exits the light guide 1 and can be used in lighting technology, in a laser vehicle headlamp 2, as in Fig. 4 is shown and explained in more detail.
- Fig. 2 is apparent according to the invention as the light exit surface 6 is at least partially covered by an opaque limiting element 15.
- the limiting element 15 is below a plane passing through the optical axis 100 horizontal plane (the horizontal plane extends in Fig. 2 perpendicular to the plane of the page and therefore coincides with the dot-dash line of the optical axis 100).
- the horizontal plane extends in Fig. 2 perpendicular to the plane of the page and therefore coincides with the dot-dash line of the optical axis 100.
- other versions are possible depending on the desired light function.
- the delimiting element 15 can be of any desired design, for example as an opaque coating or as a separate diaphragm which is adhesively bonded or otherwise applied to the light guiding element 1 or held mechanically thereon.
- the limiting element 15 allows the generation of a light-dark transition, whereby various light functions such as low beam, fog light, etc. can be realized.
- the light-guiding element 1 has a reflector element 11 running around the light-guiding element 1, which deflects the light emitted by the light-emitting element 4 in a direction away from the light-entry surface 5.
- the reflector element 11 is designed for example as a half-shell (only the upper or lower half is present) or as a full reflector.
- the reflector element 11 is either designed in one piece with the light guide 1 or designed as a separate component. In the second case, it consists for example of metal, plastic or glass, wherein the light-emitting element 4 facing side reflective, that is designed to be coated accordingly. If the reflector element 11 is embodied in one piece with the light-conducting element 1, it must be ensured that no light can escape in the direction of the light-entry surface 5 - the reflective layer is therefore thick enough, or is an opaque layer on the side facing away from the light-emitting element 4 applied.
- the reflector element 11 is to be arranged between the light entrance 5 and the light exit surface 6, but is preferably located, as in the present exemplary embodiment, in the region of the light exit surface 6.
- Fig. 4 is finally a vehicle headlight 2 in a sectional view in cross section to see in which an inventive light guide 1 is used. Only the essential features for the understanding of the invention are shown, since those skilled in the other elements of a vehicle headlamp are known.
- the vehicle headlight 2 comprises a laser light source 3 which, for example, in a wavelength range between 200 nm and 450 nm, that is partially in the non-visible UV range, radiates.
- 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 12 and a ventilation device 13 - the ventilation device 13 serves here, the cooling body 12 to supply cool air or dissipate heated air.
- the ventilation device 13 may, for example, comprise a ventilation device.
- the heat sink 12 may be made of a suitable material and in addition, for example, cooling fins or the like. exhibit.
- 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.
- all materials which convert monochromatic laser light into light of other wavelengths preferably white light
- the phosphorus converter is thus a light converter - the electrons of the converter material are excited by the laser light into higher energy levels and emit light when falling back the wavelength difference corresponding to the level difference.
- the luminous element 4 is arranged in a light-guiding element 1 according to the invention, which is positioned in a reflector 16.
- the reflector 16 directs the light emitted by the luminous element 4 in the main emission direction 200 of the vehicle headlight 2.
- the main emission direction 200 extends in the present example in FIG Fig. 4 left to right.
- the reflector 16 may be arranged to be pivotable and / or adjustable, which is not shown in the figures for reasons of clarity. In principle, any desired embodiments of the reflector 16 are possible; free-form variants as well as parabolas, hyperbolas, ellipses or combinations thereof can be used as the reflector surface.
- the reflector 16 is in Fig. 4 as a cross section and can be used as a half shell (only the upper or lower half is present) or executed as a full reflector, the skilled person a number of variants for the reflector 16 is known.
- the luminous element 4 is arranged on the optical axis 400 of the vehicle headlight 2 in a focal point of the reflector 16.
- the reflector 16 may also be designed as an open-space reflector with a plurality of different focal points, wherein according to the illustrated embodiment, the luminous element 4 is arranged precisely in one of these focal points.
- the vehicle headlight 2 is closed by a cover 17.
- the cover 17 may be configured as desired, 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 16.
- the light guide 1 according to the invention allows greater tolerances with respect to the relative positioning between the laser light source 3 and light element 4, for example when the light source 3 is replaced due to repair or if the laser light source 3 is no longer in optimal position due to vibrations during operation.
- a support member 18 is provided - the support member 18 is here provided with cooling fins 19, which serve to derive the resulting in the light generation in the light element 4 and the light guide 1 heat.
- the cooling fins 19 are just one example of heat sinks that can be used here - a number of possibilities are known to those skilled in the art in this regard, 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 against the main emission direction 200 of the vehicle headlamp 2.
- the laser light source 3 is thus arranged in the main emission direction 200 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 200 of the vehicle headlamp 2.
- the beam direction 500 of the laser light source 3 thus runs opposite to the Main emission direction 200 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 may endanger other road users.
- the beam direction 500 of the laser light source 3 preferably extends at an acute angle to the main emission direction 200 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 200 behind the light-emitting element 4.
- an angle of 90 ° means that the beam direction 500 of the laser light source 3 is normal to the optical axis of the vehicle headlight 2.
- Optical axis and main emission direction 200 of the vehicle headlight 2 are substantially parallel to each other.
- light source 3 and light-guiding element 1 or light-emitting element 4 can be arranged relative to one another.
- an optical element in the form of a collecting lens element 20 is arranged immediately after the laser light source 3. This convergent lens concentrates the light of the laser light source 3 in the direction of the light-guiding element 1 or of the luminous element 4 arranged therein.
- any other optical elements may also be used, for example lenses and / or prisms of various kinds.
- absorbing elements are arranged around such optical or light-guiding elements 1 in order to prevent any reflections of the incoming laser light in the main emission direction 200 of the vehicle headlight 2 and thus endanger other road users.
- the aperture element 21 in Fig. 4 represents an embodiment of such elements. It prevents radiation of reflections from the vehicle headlight 2 out.
- the said optical, light-guiding elements 1 and absorbing elements such as the diaphragm element 21 may also be provided with anti-reflective surfaces or be 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 have a look at the headlight components allow. In this case, irregularities such as inclusions or microstructures can be provided, which deflect the laser light, make visible from the outside and thus serve as a design element.
- the diaphragm element 21 in FIG Fig. 4 arranged above a horizontal plane extending through the optical axis 400 of the vehicle headlight 2 between the light guide 1 and the cover 17.
- the light functions of the vehicle headlamp 2 are not adversely affected.
- the diaphragm element 21 can 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 a further 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.
- the heat generated during operation of the laser light source 3 waste heat can be used.
- the laser light source 3 below a mounted in the installed state of the vehicle headlamp 2 by the optical axis 400 of the vehicle headlamp 2 horizontal plane close to the cover 17 is arranged.
- the horizontal plane runs in Fig. 4 normal to the plane of the drawing through the optical axis 400 of the vehicle headlight 2.
- the laser light source 3 is arranged so close to the cover plate 17 that the cover plate 17 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 17.
- the ventilation device 13 of the laser light source 3 can here by supporting the waste heat flow supportive be used.
- the laser light source 3 is positioned under a design shutter member 22 having corresponding design apertures 23 for the passage of the waste heat.
- these design aperture openings 23 can have a nozzle-like shape, so that the airflow 24 caused by the waste heat of the laser light source 3 can be directed in a targeted manner.
- nozzle-like shape is here to be understood a shape that allows the steering of the air passing through the design aperture openings 23 air flow to meet the above-mentioned object.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50074/2012A AT512589B1 (de) | 2012-03-12 | 2012-03-12 | Lichtleitelement für einen Laser-Fahrzeugscheinwerfer sowie Fahrzeugscheinwerfer |
PCT/AT2013/050054 WO2013134805A1 (de) | 2012-03-12 | 2013-03-04 | Lichtleitelement für einen laser-fahrzeugscheinwerfer |
Publications (2)
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EP2825818B1 true EP2825818B1 (de) | 2016-05-04 |
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EP13714182.6A Active EP2825818B1 (de) | 2012-03-12 | 2013-03-04 | Lichtleitelement für einen laser-fahrzeugscheinwerfer |
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US (1) | US9958125B2 (zh) |
EP (1) | EP2825818B1 (zh) |
JP (1) | JP6145898B2 (zh) |
CN (1) | CN104160210B (zh) |
AT (1) | AT512589B1 (zh) |
IN (1) | IN2014MN01893A (zh) |
MX (1) | MX2014010937A (zh) |
WO (1) | WO2013134805A1 (zh) |
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AT513816B1 (de) | 2012-12-20 | 2015-11-15 | Zizala Lichtsysteme Gmbh | Lichtführungseinheit für eine Leuchteinheit eines Scheinwerfers sowie Leuchteinheit und Schweinwerfer |
JP6246577B2 (ja) * | 2013-12-05 | 2017-12-13 | スタンレー電気株式会社 | 車両用灯具 |
DE102014016835A1 (de) * | 2014-11-13 | 2016-05-19 | Audi Ag | Scheinwerfer für ein Kraftfahrzeug |
AT517409B1 (de) | 2015-06-30 | 2017-06-15 | Zkw Group Gmbh | Leuchtmodul für einen Fahrzeugscheinwerfer sowie Fahrzeugscheinwerfer |
EP3473918B1 (de) * | 2017-10-19 | 2021-12-01 | ZKW Group GmbH | Beleuchtungsvorrichtung für einen kraftfahrzeugscheinwerfer |
CN111578227A (zh) * | 2020-05-15 | 2020-08-25 | 王丹 | 一种汽车后视镜变道辅助***的光学单元 |
US11255508B2 (en) | 2020-06-15 | 2022-02-22 | Grote Industries, Inc. | Deicing system for an automotive lamp |
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-
2012
- 2012-03-12 AT ATA50074/2012A patent/AT512589B1/de not_active IP Right Cessation
-
2013
- 2013-03-04 IN IN1893MUN2014 patent/IN2014MN01893A/en unknown
- 2013-03-04 CN CN201380013886.7A patent/CN104160210B/zh active Active
- 2013-03-04 US US14/384,722 patent/US9958125B2/en not_active Expired - Fee Related
- 2013-03-04 EP EP13714182.6A patent/EP2825818B1/de active Active
- 2013-03-04 MX MX2014010937A patent/MX2014010937A/es unknown
- 2013-03-04 WO PCT/AT2013/050054 patent/WO2013134805A1/de active Application Filing
- 2013-03-04 JP JP2014561227A patent/JP6145898B2/ja not_active Expired - Fee Related
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US20040156209A1 (en) | 2003-02-10 | 2004-08-12 | Hiroyuki Ishida | Vehicular headlamp and optical unit |
US20080285295A1 (en) | 2005-12-12 | 2008-11-20 | Koninklijke Philips Electronics, N.V. | Led Collimator Element for a Vehicle Headlight with a Low-Beam Function |
US20090296018A1 (en) | 2006-06-26 | 2009-12-03 | Osram Opto Semiconductors Gmbh | Light-Emitting Device |
DE102008015510A1 (de) | 2007-03-29 | 2008-10-02 | Koito Manufacturing Co., Ltd. | Leuchteneinheit eines Fahrzeugscheinwerfers |
WO2009115976A1 (en) | 2008-03-20 | 2009-09-24 | Koninklijke Philips Electronics N.V. | Illumination system comprising a luminescent element with a heat sink |
JP2009266437A (ja) | 2008-04-22 | 2009-11-12 | Koito Mfg Co Ltd | 車両用灯具 |
US20110044070A1 (en) | 2009-08-18 | 2011-02-24 | Sharp Kabushiki Kaisha | Light source device |
US20110148280A1 (en) | 2009-12-17 | 2011-06-23 | Sharp Kabushiki Kaisha | Vehicle headlamp and illuminating device |
WO2011099640A1 (en) | 2010-02-09 | 2011-08-18 | Sharp Kabushiki Kaisha | Lamp comprising a phosphor, radiation source, optical system and heatsink |
Also Published As
Publication number | Publication date |
---|---|
CN104160210A (zh) | 2014-11-19 |
EP2825818A1 (de) | 2015-01-21 |
US9958125B2 (en) | 2018-05-01 |
MX2014010937A (es) | 2014-11-13 |
AT512589A1 (de) | 2013-09-15 |
IN2014MN01893A (zh) | 2015-07-10 |
AT512589B1 (de) | 2014-06-15 |
US20150023037A1 (en) | 2015-01-22 |
CN104160210B (zh) | 2017-05-03 |
JP6145898B2 (ja) | 2017-06-14 |
JP2015513383A (ja) | 2015-05-11 |
WO2013134805A1 (de) | 2013-09-19 |
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