EP2795183A1 - Optikelement für einen laser-fahrzeugscheinwerfer - Google Patents
Optikelement für einen laser-fahrzeugscheinwerferInfo
- Publication number
- EP2795183A1 EP2795183A1 EP13712667.8A EP13712667A EP2795183A1 EP 2795183 A1 EP2795183 A1 EP 2795183A1 EP 13712667 A EP13712667 A EP 13712667A EP 2795183 A1 EP2795183 A1 EP 2795183A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical element
- light source
- laser light
- luminous
- vehicle headlight
- 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.)
- Granted
Links
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Classifications
-
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
-
- 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]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel 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
- F21S41/176—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
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/19—Attachment of light sources or lamp holders
- F21S41/192—Details of lamp holders, terminals or connectors
-
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/322—Optical layout thereof the reflector using total internal reflection
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
- F21S41/365—Combinations of two or more separate reflectors successively reflecting the 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
-
- 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
- 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
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
-
- 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
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
-
- 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
Definitions
- the invention relates to an optical element for a laser vehicle headlamp, wherein the laser vehicle headlamp comprises at least one laser light source and at least one illuminatable by the laser light source and thus excitable to the emission of visible light element.
- the invention also relates to a light source module with at least one such optical element and a vehicle headlamp with at least one such optical element or with at least one light source module as mentioned above.
- Various types of vehicle headlights are known from the prior art, with headlamps with discharge lamps and halogen light sources being used in recent years.
- laser light sources such as semiconductor lasers
- a light source a so-called phosphor converter
- a laser light source which is thereby excited to emit visible light.
- US 2011/0194302 A1 shows such a light source, where a laser diode radiates via a light-guiding element from behind onto a luminous element consisting of a fluorescent substance, which in turn emits visible light which is directed in the direction of travel via a reflector screen.
- the fluorescent substance radiates the resulting visible light directly in the direction of travel, without the light can be optically preformed, which can be a disadvantage especially in legally prescribed photographs.
- the currently used laser light sources emit powers up to 3 W (an increase in the emitted power is not ruled out in the future) in Schoabstrahlraum the headlamp, in the event of malfunction or damage to the headlamp, so it can by high-intensity eye-damaging laser light radiation Injuries, but at least to endanger other road users. come.
- JP 2003295319 A a reflecting mirror is arranged on the side facing away from the laser light source side of the luminous element, which reflects on the luminous element complicatstrahlendes laser light back into the luminous element. This prevents a risk to other road users by leaking laser radiation.
- US 2011/0157865 A1 describes a lighting apparatus in which a concave mirror is arranged in front of the luminous element with fluorescent substance, which deflects the light emitted in the forward direction in the direction of the luminous element or in the direction of a main reflector of the lighting device.
- optical element has at least one, in the mounted state of the laser light source side facing away from the luminous element at least one, light in the direction of the laser light source reflecting reflective layer is associated ,
- the invention enables a compact optical element with a luminous element, the light of which can be optically preformed by the associated reflection layer.
- the reflection layer reflects both visible light and irradiated laser light. Since light-emitting element and optical preforming are combined in one component, rapid, uncomplicated installation in light source modules and / or vehicle headlights is possible.
- the optical element can be easily installed in a vehicle headlight or in a light source module for a vehicle headlight via a holder of known type.
- the term "mounted state” is to be understood as meaning a state in which the optical element is installed in a light source module and / or in a vehicle headlight and can accordingly be irradiated by a laser light source.
- “Mounted state” furthermore means that terms used below as above, below, etc. refer to the installation position of the vehicle headlamp, unless otherwise stated.
- the reflective layer In the main emission direction of the vehicle headlight, in which the optical element is installed, also light emission is effectively shielded.
- the reflective layer In addition to the realization of the desired light image is therefore shielded by the reflective layer light from the laser light source, which could radiate past the light element or is not absorbed by this, thereby preventing the risk of uninvolved road users.
- the reflective layer is opaque to both visible and light in the invisible region of the spectrum. In the present case, therefore, the layer reflects both the light emitted by the luminous element and light from the laser light source which is not absorbed in the luminous element or is radiated past it.
- the luminous element is a phosphorus converter, which is excited by irradiation with laser light to emit visible, preferably white light.
- various materials are known or in use.
- the optical element is designed as a volume body made of a substantially transparent, light-conducting material, and the reflection layer is arranged on the first side of the optical element facing away from the laser light source in the mounted state.
- material for the volume body for example, glass, plastic or other suitable materials may be used.
- the reflection layer, which is arranged on the first, in the mounted state away from the laser light source first side of the optical element (ie the outer surface of the volume body) is designed such that it acts in the direction of the laser light source reflective.
- the reflection layer is to be provided on the outer surface on the first side at least in regions, so that the light of the luminous element is completely reflected back; preferably, it completely covers the outer surface.
- the layer can be embodied in various ways, for example by steaming or painting.
- the thickness and / or the Reflectance of the layer are to be chosen so that the opacity is ensured both for the laser light and for the light emitted by the light emitting element visible light.
- the optical element is designed as a hollow body made of a substantially transparent, light-conducting material and the side facing away from the laser light source in the assembled state is formed by a rear wall, wherein the reflective layer on the inner, the light-emitting element or on the outer, The light element facing away from the rear wall is arranged.
- the optical element consists of a shell - just made of said transparent, photoconductive material - which is filled with air or any other gas, the influence on the refractive properties has to be considered.
- the shell may also be multi-piece to facilitate manufacturing.
- the formation of the layer on the back wall is again by vapor deposition, painting or other suitable methods.
- the first side facing away from the laser light source is designed as a free-form surface with at least one focal point, wherein the luminous element is preferably arranged in a focal point.
- the receptacle for the luminous element is therefore to be designed accordingly so that the luminous element comes to lie in the mounted state in a focal point of the reflection layer.
- the reflection layer can also comprise a plurality of focal points, in particular if it is designed as a free-form surface.
- the execution of the first, facing away from the laser light source side as a free-form surface when coated with the reflective layer allows to achieve the desired reflection properties.
- the efficiency of the overall system can be increased since the light of the luminous element radiated in the main emission direction of the vehicle headlight is not lost, but made usable.
- the reflection region is designed such that reflected light is reflected back into an annular near region around the luminous element.
- the optical element is made of a substantially transparent, light-conducting material and further comprises a on the in the mounted state facing away from the laser light source first side of the optical element preferably form-fitting applied reflector element, preferably made of an opaque material, wherein the reflective layer is arranged on the side facing the luminous element of the reflector element or on the side remote from the luminous element side of the reflector element.
- the optical element can be embodied as a volume body or as a hollow body in accordance with the above descriptions.
- material plastic or metal can be used.
- the term "positively locking" here means that the shape of the reflector element on the side facing the optical element corresponds to the shape of the first side of the optical element, so that the reflector element rests on the first side without gaps, but this positive seating is for a proper Function not necessary, there could also be air gaps or gaps between the reflector element and the first side.
- the first side of the optical element facing away from the laser light source and / or the side of the reflector element facing the luminous element and / or the side of the reflector element facing away from the luminous element are expediently embodied as a freeform surface with at least one focal point, wherein the luminous element can preferably be arranged in a focal point.
- At least one light-impermeable absorption layer is applied to the first side of the optical element facing away from the laser light source in the mounted state, for example on a reflection layer provided there.
- the absorption layer is applied to the reflection layer or directly to the optical element.
- the additional provision of the opaque absorption layer has the advantage of reliably preventing the transmission of the reflection layer.
- the absorption layer can be designed, for example, as a lacquer layer.
- the receptacle for the luminous element is designed as a blind hole or on all sides enclosed by the optical element cavity.
- running as a blind hole for example, simply a new light element used or replaced the light element if necessary.
- the light-emitting element is well protected against environmental influences. In the case of wear or the need to replace the light element, the entire optical element is replaced.
- the second side of the optical element facing in the assembled state of the laser light source is formed as a flat, preferably substantially normal to the beam direction of the laser light source extending boundary surface and facing away from the laser light source first side is designed as a free-form surface with at least one focal point, wherein the Luminous element is preferably arranged in a focal point.
- the boundary surface can additionally be provided with any surface structure which has light-collecting and / or light-scattering properties. As a result, the properties of the light emitted by the boundary surface can be influenced.
- a connection region is then provided adjacent to the boundary surface, which connects the second side of the optical element to the first side of the optical element.
- the connecting region is designed to converge from the second side of the optical element in the direction of the first side of the optical element.
- the boundary surface is made substantially circular and the first side of the optical element also has a substantially circular cross-section, wherein the first diameter of the first side is greater than the second diameter of the boundary surface.
- the connecting region thus runs in the mounted state in the direction of the laser light source converging. Under cross-section is here to understand a section along a plane that is normal to the beam direction of the laser light source. Individual areas of the bonding area can be made different from the rest, for example with a mirrored, transparent or opaque coating, with surface design for influencing the emitted light, etc. - the exact design depends on the application of the optical element.
- the optical element according to the invention allows the realization of various light functions.
- the second side of the optical element facing the assembled state of the laser light source is at least partially, but in particular in a region under a through the light emitting ment extending horizontal plane, covered by an opaque aperture device.
- the diaphragm device is designed as an opaque coating.
- the luminous element is sharply demarcated geometrically and photometrically.
- This purpose is served by the above-mentioned aperture device, which is embodied, for example, as a coating, vapor deposition or separate component.
- the diaphragm device together with correspondingly designed reflection regions, causes the light emission reflected in the optical element to exit above the luminous element and thus be usable for the vehicle headlight.
- an initially mentioned light source module for a laser vehicle headlamp comprising at least one laser light source and at least one can be irradiated by the laser light source and thus excitable to the emission of visible light element according to the invention, that the luminous element in an optical element according to one of the variants described above is arranged.
- the invention is also achieved by a vehicle headlamp mentioned above with at least one laser light source and at least one, can be irradiated by the laser light source and thus excitable to the emission of visible light luminous element according to the invention that the luminous element is arranged in an optical element as described above.
- the vehicle headlight has at least one light source module as previously described.
- the vehicle headlight has at least one reflector, with the optical element preferably being arranged in the vehicle headlight such that the lighting element is positioned at a focal point or in the vicinity of the focal point of the reflector.
- FIG. 5 shows a light source module with an optical element according to the invention.
- FIG. 6 shows a vehicle headlight with a light source module according to FIG. 5.
- the optical element 1 shows a first variant of an optical element 1 according to the invention for use in a light source module 16 (see FIG. 5) or a laser vehicle headlight 2 (see FIG. 6) in a cross-sectional view.
- the optical element 1 is designed according to this first variant as a solid volume of a transparent, light-conducting material, for example glass or plastic.
- the optical element 1 has a socket 7 designed as a blind for a light-emitting element 4.
- the luminous element 4 is a phosphorus converter of a known type, which is excited by the irradiation of monochromatic laser light for the emission of polychromatic, preferably white light.
- the luminous element 4 is spherical in the illustrated embodiment, but may also take on a different shape (e.g., ellipsoidal shape) depending on the field of application of the optic 1.
- a laser light source 3 is also shown, which irradiates the luminous element 4 with laser light.
- the beam direction 200 is also shown.
- a reflection layer 9 is arranged on a first side 5 of the optical element, which faces away from the laser light source 3.
- the reflection layer 9 is both for laser light and reflected light emitted in the direction of the laser light source 3.
- the reflection layer 9 can be performed, for example, by vapor deposition, painting or applying a separate reflection onselements.
- the thickness and / or the degree of reflection of the reflection layer 9 must be selected such that both laser light and light emitted by the luminous element 4 are properly reflected and prevented from penetrating the reflection layer 9.
- the reflection layer 9 is necessary since, due to the angle at which light emitted by the light-emitting element 4 impinges, no total reflection can occur.
- FIG. 1 shows beam progressions which originate from the luminous element 4 and are reflected by the reflection layer 9 in the vicinity of the luminous element 4, resulting in a "virtual" enlargement of the light source luminous element 4.
- a further, opaque absorption layer 6 is applied, which absorbs both visible light and non-visible laser light.
- Such a layer prevents leakage of light through the reflective layer 9 - this can be advantageous if, for example, the reflective layer 9 is produced by vapor deposition: in this case, the layer is only a few micrometers thick and may be partially (or possibly completely) too thin or thin be incomplete. Therefore, the additional absorption layer 6 is applied, for example, as a lacquer layer or as a diaphragm.
- the first side 5 of the optical element 1 ie, the outer surface
- the receptacle configured as a blind hole 7 is arranged such that the luminous element 4 lies in one of these focal points when introduced into the receptacle comes.
- the first side 5 (and thus also the reflection layer 9) is preferably designed as a free-form surface. Running a freeform surface is known to the skilled person.
- the first side 5 and thus the reflection layer 9 applied thereon are designed such that light is reflected above, below and laterally in the vicinity of the luminous element 4 and thus virtually contributes to an enlargement of the light source or of the luminous element 4 - the luminous element
- 4 is virtually surrounded by a light ring of reflected light.
- the reflection layer therefore directs the light reflected by it predominantly past the light element. This variant is shown in FIG. 1.
- the optical element 1 according to FIG. 1 corresponds in its shape to a spherical segment.
- the in the mounted state of the laser light source 3 facing the second side 11 of the optical element 1 is formed as a planar, preferably substantially normal to the beam direction 200 of the laser light source 3 extending boundary surface 21.
- the first side 5 of the optical element facing away from the laser light source 3 is, as already mentioned, designed as a free-form surface with at least one focal point, wherein the light-emitting element 4 can preferably be arranged in a focal point.
- the said free-form surface corresponds remotely to a spherical cap or a spherical cap, it being apparent from the reflection characteristic that it is not just such a shape.
- the boundary surface 21 is disposed away from the laser light source 3.
- the boundary surface 21 need not be designed as a flat surface but may also take on a different shape, for example, concave, convex or wavy surface for additional influence on the beam path.
- connection region 13 connects the first side 5, which in the assembled state faces away from the laser light source 3, with the boundary surface 21 on the second side 11 facing the laser light source 3.
- the connection region 13 can also be provided with a coating, for example with an opaque one , absorbing layer or also with a reflective layer, wherein the layer can act either in the direction of the optical element interior or also to the outside reflecting.
- Connection region 13 and also the boundary surface 21 can additionally be provided with any surface structure which collects light and / or light has scattering properties.
- the individual surface regions of the optical element 1 can be designed differently, for example with opaque and / or reflective coatings, surface structures which break or influence the exiting light.
- these variants are not shown in the figures.
- connection region 13 is designed to converge in the direction of the laser light source 3.
- the boundary surface 21 is made substantially circular and the first side 5 of the optical element 1 also has a substantially circular cross-section.
- the cross section runs here in a plane which is normal to the beam direction 200 of the laser light source 3 - in the present figures, thus normal to the sheet plane and the beam direction 200.
- the first diameter 14 of the first page 5 is greater than the second diameter 15 of the boundary surface 21st so that the converging shape results.
- the reverse version is also possible here.
- the reflection layer 9 is applied to a reflector element 10, which is applied to the first side 5 of the optical element 1.
- the reflection layer 9 can be applied to the side of the reflector element 10 facing the optical element 1.
- the reflector element 10 preferably consists of an opaque or light-absorbing material, for example plastic or metal (for example sheet metal).
- the reflector element 10 may also be made of a light-transmitting material and the reflection layer 9 may be applied to the side facing away from the optical element 1 side. In that case, however, an opaque layer would still be advantageously applied to the reflection layer 9, in order to prevent radiation of the reflection layer and disturbance of the light image or endangered uninvolved road users.
- the reflector element 10 is designed so that it is positively connected to the first side 5 of the optical element 10.
- the reflection layer 9 has at least one focal point due to the shape of the reflector element 10, wherein the luminous element 4 is preferably arranged in the mounted state in a focal point of the reflection layer 9.
- Optic element 1 and / or reflector element 10 are correspondingly designed as free-form surfaces of known type.
- Fig. 3 shows a variant of the invention, in which the optical element 1 on its second side 11 (ie the light source in the mounted state of the laser 3 facing side) has an opaque aperture device 12.
- This diaphragm device 12 covers the second side 11 at least partially, wherein it is arranged in the illustrated embodiment below a plane passing through the light element 4 horizontal plane 100.
- the horizontal plane 100 runs in the figures normal to the drawing plane and is therefore recognizable only as a dash-dotted line.
- other versions are possible depending on the desired light function.
- the diaphragm device 12 can be designed as desired, for example as an opaque coating or as a separate diaphragm which is adhesively bonded or otherwise applied to the optical element 1 or held mechanically thereon.
- the diaphragm device 12 allows the generation of a light-dark transition, whereby various light functions such as low beam, fog light, etc. can be realized.
- the shape of the first side 5 facing away from the laser light source 3 differs from the embodiment in FIGS. 1 and 2.
- the shape is no longer similar to a spherical cap, but embodied differently, which is based on the sketched beam paths is recognizable.
- the optical element 1 in addition to the one-piece design shown here (apart from coatings or aperture elements or the like) in variants can also be designed so that it consists of several parts that are glued or welded together, for example and have different optical properties (refractive index or the like).
- the optical element 1 therefore, e.g. the volume body made of several parts, the separate components can be manufactured with different optical properties. Accordingly, then the reflection layer 9 (or the absorption layer 6) can be introduced as separate components.
- the optical element 1 is designed as a hollow body. It therefore has a shell, which preferably consists predominantly of a transparent, light-conducting material.
- the reflection layer 9 is formed on the rear wall 22 disposed on the first side 5.
- the reflection layer 9 is in the illustrated embodiment on the inner, the luminous element 4 facing side of the rear wall 22 is formed.
- an absorption layer 6 is applied to prevent transmission of the rear wall 22 by laser or emitted by the light emitting element 4 light.
- the reflective layer 9 may be applied on the outer side of the rear wall 22 and also be covered by an absorption layer 6.
- the diaphragm device 12 described above can also be realized in the variant with hollow body in addition to the described embodiments in that the hollow body is made of a thermoplastic material.
- the region of the delimiting surface 21 representing the diaphragm device 12 (preferably below a horizontal plane 100 extending through the luminous element 4) is sprayed with a light-impermeable material in a multi-component spraying process. It must then be taken so no further action to provide a diaphragm device 12 ready.
- the optical element can be made in several pieces, for example, by the rear wall 22 and the rest of the optical element 1 are designed separately.
- the back wall may be made of an opaque material, whereby the absorbing layer 6 can be saved when the reflective layer 9 is disposed on the inner side of the back wall 22.
- the rest of the optical element 1 essentially forms a cover for this reflector with a holder for the luminous element 4.
- the rear wall 22 and the rest of the optical element 1 also form a common structural unit.
- the hollow body which must be made non-gas-tight, there is ordinary ambient air.
- the hollow body can also be made gas-tight, so that the interior can be filled with other gases that influence, for example, the reflection behavior.
- Fig. 5 shows a variant of the invention, in which the optical element 1 in a light source module 16 is installed for a vehicle headlight 2.
- the optical element 1 according to this embodiment has a receptacle for the luminous element 4 in the form of a cavity 8. This means that the luminous element 4 is completely surrounded by the optical element 1.
- the boundary surface 21 (or first side 11) is slightly concave in the variant according to FIG. 5.
- the light source module 16 has a laser light source 3 including associated cooling devices 17 (e.g., cooling fins, water cooling, or the like), with the laser light source 3 and the optical element 1 being disposed in common on a support member 18.
- the support member 18 may be made of a thermally conductive material and / or additional cooling elements such as cooling fins 19 have.
- the light source module 16 as a whole can be installed in a vehicle headlight 2.
- a vehicle headlight 2 Such a variant is shown in FIG.
- FIG. Here it can be seen that, thanks to the reflection layer 9 of the optical element 1, exploitation of the light emitted by the luminous element 4 in the main emission direction 300 of the laser vehicle headlamp 2 is made possible since this light is directed by the reflection layer 9 in the direction of the reflector 20 of the vehicle headlight 2. Furthermore, it can be seen that light emitted directly by the luminous element 4 is imaged differently (FIG. A in FIG. 6) as light which passes via the reflection element 10 to the reflector 20 of the vehicle headlamp 2 (FIG. B in FIG. 6).
- the optical element 1 is arranged in the vehicle headlight 2 such that the light-emitting element 4 is positioned at a focal point of the reflector 20.
- the shape of the reflector 20 and the optical element 1 different light distribution patterns can be realized.
- the light patterns of the light emitted directly by the light-emitting element 4 can also be brought into line with the light pattern of the light emitted via the reflection element 10.
Landscapes
- 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)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50072/2012A AT512587B1 (de) | 2012-03-12 | 2012-03-12 | Optikelement für einen Laser-Fahrzeugscheinwerfer sowie Lichtquellenmodul und Fahrzeugscheinwerfer |
PCT/AT2013/050048 WO2013134802A1 (de) | 2012-03-12 | 2013-02-28 | Optikelement für einen laser-fahrzeugscheinwerfer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2795183A1 true EP2795183A1 (de) | 2014-10-29 |
EP2795183B1 EP2795183B1 (de) | 2017-07-12 |
Family
ID=48013667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13712667.8A Active EP2795183B1 (de) | 2012-03-12 | 2013-02-28 | Optikelement für einen laser-fahrzeugscheinwerfer |
Country Status (8)
Country | Link |
---|---|
US (1) | US9845932B2 (de) |
EP (1) | EP2795183B1 (de) |
JP (1) | JP5888536B2 (de) |
CN (1) | CN104334965B (de) |
AT (1) | AT512587B1 (de) |
IN (1) | IN2014MN01956A (de) |
MX (1) | MX341655B (de) |
WO (1) | WO2013134802A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
JP2015005439A (ja) * | 2013-06-21 | 2015-01-08 | スタンレー電気株式会社 | 車両用前照灯及び車両用前照灯に用いられる光ファイババンドル |
DE102014215220A1 (de) | 2014-08-01 | 2016-02-04 | Osram Gmbh | Beleuchtungsvorrichtung mit einer Pumpstrahlungsquelle |
KR102294317B1 (ko) | 2015-01-30 | 2021-08-26 | 엘지이노텍 주식회사 | 발광 장치 |
DE102015001695A1 (de) * | 2015-02-10 | 2016-08-11 | Audi Ag | Beleuchtungsvorrichtung für einen Scheinwerfer eines Kraftfahrzeugs sowie Verfahren zum Betreiben einer Beleuchtungsvorrichtung |
US10551019B2 (en) | 2015-08-24 | 2020-02-04 | Lumileds Holding B.V. | Illumination device for a vehicle headlight |
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US5103381A (en) * | 1991-01-09 | 1992-04-07 | Uke Alan K | Lamp reflector system |
JP4054594B2 (ja) * | 2002-04-04 | 2008-02-27 | 日東光学株式会社 | 光源装置及びプロジェクタ |
JP4068387B2 (ja) | 2002-04-23 | 2008-03-26 | 株式会社小糸製作所 | 光源ユニット |
JP4124445B2 (ja) | 2003-02-03 | 2008-07-23 | 株式会社小糸製作所 | 光源及び車両用前照灯 |
JP4047266B2 (ja) * | 2003-11-19 | 2008-02-13 | 株式会社小糸製作所 | 灯具 |
JP2007173177A (ja) * | 2005-12-26 | 2007-07-05 | Stanley Electric Co Ltd | 照明装置 |
JP4689579B2 (ja) * | 2006-10-25 | 2011-05-25 | シャープ株式会社 | 発光装置 |
JP2008226707A (ja) * | 2007-03-14 | 2008-09-25 | Koito Mfg Co Ltd | 車両用灯具 |
JP5122542B2 (ja) * | 2009-09-15 | 2013-01-16 | シャープ株式会社 | 発光装置、照明装置および光検知器 |
JP4991834B2 (ja) * | 2009-12-17 | 2012-08-01 | シャープ株式会社 | 車両用前照灯 |
JP4991001B2 (ja) | 2009-12-28 | 2012-08-01 | シャープ株式会社 | 照明装置 |
JP5232815B2 (ja) | 2010-02-10 | 2013-07-10 | シャープ株式会社 | 車両用前照灯 |
JP2011222260A (ja) * | 2010-04-08 | 2011-11-04 | Sharp Corp | 発光装置、照明装置、車両用前照灯および投影装置 |
US20110280033A1 (en) * | 2010-05-17 | 2011-11-17 | Sharp Kabushiki Kaisha | Light-emitting device, illumination device, and vehicle headlamp |
CN104482477A (zh) * | 2010-05-17 | 2015-04-01 | 夏普株式会社 | 发光体及发光装置 |
JP2011243369A (ja) * | 2010-05-17 | 2011-12-01 | Sharp Corp | 発光装置、照明装置および車両用前照灯 |
JP2011249538A (ja) * | 2010-05-26 | 2011-12-08 | Sharp Corp | 発光装置および照明装置 |
JP2012099282A (ja) * | 2010-10-29 | 2012-05-24 | Sharp Corp | 照明装置及び車両用前照灯 |
JP5329511B2 (ja) * | 2010-10-29 | 2013-10-30 | シャープ株式会社 | 照明装置及び車両用前照灯 |
EP2447600B1 (de) * | 2010-10-29 | 2019-02-27 | Stanley Electric Co., Ltd. | Fahrzeugscheinwerfer |
JP5331156B2 (ja) * | 2011-04-28 | 2013-10-30 | シャープ株式会社 | 投光ユニットおよび投光装置 |
JP5722702B2 (ja) * | 2011-05-19 | 2015-05-27 | スタンレー電気株式会社 | 車両用灯具 |
JP5380498B2 (ja) * | 2011-07-25 | 2014-01-08 | シャープ株式会社 | 光源装置、照明装置、車両用前照灯および車両 |
US9335017B2 (en) | 2011-12-20 | 2016-05-10 | Stanley Electric Co., Ltd. | Light emitting device that can realize reduction in thickness of vehicle light fitting, vehicle light fitting using the light emitting device and vehicle provided with the vehicle light |
-
2012
- 2012-03-12 AT ATA50072/2012A patent/AT512587B1/de not_active IP Right Cessation
-
2013
- 2013-02-28 CN CN201380014194.4A patent/CN104334965B/zh active Active
- 2013-02-28 US US14/382,567 patent/US9845932B2/en active Active
- 2013-02-28 MX MX2014010935A patent/MX341655B/es active IP Right Grant
- 2013-02-28 IN IN1956MUN2014 patent/IN2014MN01956A/en unknown
- 2013-02-28 EP EP13712667.8A patent/EP2795183B1/de active Active
- 2013-02-28 WO PCT/AT2013/050048 patent/WO2013134802A1/de active Application Filing
- 2013-02-28 JP JP2014561225A patent/JP5888536B2/ja active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013134802A1 * |
Also Published As
Publication number | Publication date |
---|---|
MX341655B (es) | 2016-08-26 |
AT512587B1 (de) | 2013-11-15 |
WO2013134802A1 (de) | 2013-09-19 |
MX2014010935A (es) | 2014-11-13 |
US9845932B2 (en) | 2017-12-19 |
AT512587A1 (de) | 2013-09-15 |
IN2014MN01956A (de) | 2015-07-10 |
CN104334965A (zh) | 2015-02-04 |
US20150049501A1 (en) | 2015-02-19 |
CN104334965B (zh) | 2017-02-22 |
JP2015513777A (ja) | 2015-05-14 |
EP2795183B1 (de) | 2017-07-12 |
JP5888536B2 (ja) | 2016-03-22 |
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