EP2827049A2 - Phare pour un phare de route anti-éblouissement - Google Patents

Phare pour un phare de route anti-éblouissement Download PDF

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Publication number
EP2827049A2
EP2827049A2 EP14177370.5A EP14177370A EP2827049A2 EP 2827049 A2 EP2827049 A2 EP 2827049A2 EP 14177370 A EP14177370 A EP 14177370A EP 2827049 A2 EP2827049 A2 EP 2827049A2
Authority
EP
European Patent Office
Prior art keywords
light
light source
diaphragm
headlamp
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.)
Withdrawn
Application number
EP14177370.5A
Other languages
German (de)
English (en)
Other versions
EP2827049A3 (fr
Inventor
Matthias Brendle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Automotive Lighting Reutlingen Germany GmbH
Original Assignee
Automotive Lighting Reutlingen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Automotive Lighting Reutlingen GmbH filed Critical Automotive Lighting Reutlingen GmbH
Publication of EP2827049A2 publication Critical patent/EP2827049A2/fr
Publication of EP2827049A3 publication Critical patent/EP2827049A3/fr
Withdrawn legal-status Critical Current

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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
    • F21S41/141—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
    • F21S41/141—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
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • 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]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • 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
    • 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
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment 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
    • 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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • 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
    • 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
    • F21S41/47—Attachment 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
    • F21S45/49—Attachment of the cooling means
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching 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
    • 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

Definitions

  • the present invention relates to a headlamp according to the preamble of claim 1.
  • a headlamp is provided by the inventor known per se and has at least two adjacently arranged light sources having light source field, each of the light sources is adapted to light in a To emit main light emission direction having light beam.
  • the motor vehicle headlamp on a collective lens field, which has exactly one converging lens for each of the at least two light sources, which is associated with the respective light source in that a light entrance surface of this convergent lens is in the outgoing light beam from this light source, and the main emission of this light source intersects.
  • the per se known headlight serves to produce a so-called anti-glare high beam. among them is understood to be a high beam light distribution, in the subregions can be darkened targeted to avoid dazzling other road users.
  • the darkening takes place automatically on the basis of signals from sensors that detect such road users in advance of the vehicle. Examples of such sensors are visible light cameras, infrared radiation sensors and radar sensors.
  • Such a light distribution is usually generated in two stages.
  • First, an intermediate image is generated with the aid of primary optics from the light of a plurality of light sources, the light fields of which preferably adjoin one another directly and do not overlap.
  • the light sources are semiconductor light sources, in particular light-emitting diodes, whose luminous flux can be individually controlled by light-emitting diodes.
  • the high beam distribution is formed from this intermediate image by a secondary optics.
  • the secondary optics is an imaging optic that focuses on the intermediate image.
  • the secondary optics can be designed as a converging lens, as a parabolic mirror or as an optical system of a plurality of lenses and / or mirrors.
  • the secondary optics can also be modified so that the Image of the intermediate image is a vertical and / or horizontal scattering superimposed to produce a rule-compliant light distribution.
  • the primary optics proposed for these systems are, in particular, optics fields comprising concave mirrors and light guides whose cross-section widens in the main propagation direction of the light.
  • An example of such light guides is realized by conical light guides.
  • the secondary optics focuses directly on a field of directly adjacent light exit surfaces of light-emitting diode chips.
  • the intermediate image is preferably formed on a continuous light exit surface of the collecting lens array.
  • the collecting lens array is preferably realized as a cohesively one-piece, coherent combination of the individual collecting lens areas.
  • Such a combination is particularly easy to produce, because it reduces the number of components compared to a built-up of many individual convergent lenses primary optics. Analog also reduces the adjustment effort in the production of the headlamp. In addition, the combination is particularly robust and cost-effective. The relatively simple collection lens geometry can even be realized in glass.
  • the intensity of the light in the darkened fields should be less than 1/100 of the light intensity in the adjacent illuminated light fields.
  • the object of the present invention is to provide a headlamp of the aforementioned type, which allows a more complete darkening of individual fields even when using a cohesively coherent collecting lens field in conjunction with the use of light emitting diodes having a phosphor layer for Lichtmaschinekonverttechnik.
  • the invention differs from the initially mentioned and known per se known prior art in particular the fact that the headlamp has at least one aperture which is arranged on the light entrance surface side of two directly adjacent collecting lenses so that they the light entry surface of the one shadows two converging lenses against light emanating from the other of the two converging lenses associated light source.
  • the invention is based on the finding that stray light of a switched-on light-emitting diode can reach the phosphor layer of light-emitting diodes switched off via the collector lens field. There, this scattered light penetrates into the phosphor layer and stimulates it to shine. As a result, the off and thus de-energized light emitting diodes start to glow slightly, which prevents a desired complete darkening of the associated light fields.
  • the aperture prevents stray light of a light-emitting diode undesirably penetrates into the converging lens of an adjacent, de-energized light emitting diode. This eliminates the cause of the unwanted lighting of currentless LEDs effectively and with little technical effort.
  • the aperture forms together with the collecting lens field a structurally simple primary optics for a glare-free high beam module of the headlight. This simple primary optics is able to generate from the light of a plurality of light emitting diodes whose light exit surface are separated from one another by distances, an intermediate image with a plurality of light fields directly adjacent to one another corresponding to the number of light sources.
  • the invention is in particular capable of achieving a particularly high light-dark contrast between the fields of light-emitting diodes switched on and switched-off light-emitting diodes.
  • a preferred embodiment is characterized in that the at least one aperture a pinhole in shape a plate, which is arranged between the light source field and the collecting lens array and which has a diaphragm web for each pair of mutually adjacent light sources of the light source field.
  • the pinhole has a number of recesses which is identical to the number of light sources of the light source field, wherein the recesses in the pinhole are just arranged so that in the assembled state exactly one recess of the pinhole in front of a light exit surface exactly one Light source of the light source field is located and that lying between adjacent recesses aperture webs on the light entrance surface side of two directly adjacent collecting lenses are arranged so that it shadows the light entrance surface of the one of the two converging lenses against light of the light source, which arranged the other of the two directly adjacent each other Associated with collective lenses.
  • the diaphragm webs are arranged centrally between each two adjacent light sources.
  • the collecting lens array is a one-piece cohesively coherent component, which is made of transparent material and shaped so that for each light exit surface of the light emitting diode of the light source field results in a converging lens, which is associated with the respective light source in that a light entry surface of this Lens lies in the outgoing light beam from this light source and cuts the Hauptlichtabstrahlraum this light source.
  • a width of the diaphragm webs at least the width of the shielded Light exit surfaces of the LEDs corresponds.
  • the diaphragm has at least one recess having a constriction, wherein the constriction is as wide as the width of the parallel to the diaphragm edge light exit surface of the light emitting diode, which is arranged in the recess.
  • constriction is located where the light-emitting diode is located, which is preferably arranged centrally in the recess.
  • the diaphragm has at least one recess which is constricted on one side on a side facing an adjacent LED and is not constricted on the side opposite this side.
  • the clear width of the constriction of the recess corresponds to the width of the light-emitting diodes in the direction of the row arrangement.
  • the opaque aperture material is embedded in the transparent lens material.
  • the diaphragm material is a metallic material.
  • the diaphragm has a solderable surface.
  • the diaphragm has a U-shape.
  • FIG. 1 shows an embodiment of a motor vehicle headlight 10 according to the invention.
  • the motor vehicle headlight has a housing 12 with a light exit opening, which is covered by a transparent cover 14.
  • the light exit opening faces the direction of travel x.
  • the y-direction is parallel to a transverse axis of the vehicle and the z-direction is parallel to a vertical axis of the vehicle.
  • FIG. 1 shows the headlamp therefore in a plan view, the headlamp is cut open and the cutting plane is horizontal.
  • Each of the light sources is adapted to emit light in a light beam 20 having a main light emission direction 18.
  • the light sources are preferably each semiconductor light sources, in particular light emitting diodes. It is also preferable that the LEDs have a flat light exit surface.
  • the emitted light beams then have approximately a Lambertian radiation characteristic, which is represented in each case by the representation of the bundles as circles. The length of the directional arrows lying within a circle is then known to indicate the radiation intensity prevailing in this direction.
  • Each circle illustrates a single bundle of light.
  • the assignment takes place in that a light entry surface of this converging lens lies in the light beam emanating from this light source, and the main light emission direction of this light source intersects. This definition results in a clear assignment.
  • the FIG. 1 shows an example of such an association.
  • the collecting lens array 22 has a light entry side 26 and a light exit side 28.
  • the headlight according to the invention and also in the FIG. 1 illustrated embodiment at least one aperture 24 which is arranged on the light entrance surface side of two directly adjacent collecting lenses so that it shadows the light entrance surface of the one of the two converging lenses against light of an adjacent light source, which is assigned to the other of the two directly adjacent arranged collecting lenses is.
  • the individual converging lenses are preferably designed by their shape and arrangement to reduce the opening angle of each incident light on them.
  • the converging lenses are shaped and arranged such that the light fields forming on the light exit side 28 of the collector lens field when the light sources are switched in contact, but do not overlap.
  • the sum of these light fields represents an internal light distribution, which is converted by a secondary optics 30, which may be realized as a converging lens or reflector, in an external light distribution, which adjusts in front of the headlight and thus in front of the motor vehicle having this headlight.
  • the inner light distribution corresponds to the intermediate image mentioned earlier.
  • FIG. 2 shows an optical system of a specific embodiment of a headlamp or light module of the headlamp according to the invention together with various levels and a measuring screen 32 which extends along a horizontal direction H and a vertical direction V.
  • the arrangement of the screen corresponds to the arrangement of a vertically upstanding from the road ahead of the vehicle wall.
  • the light source field and the collecting lens field of the FIG. 1 mounted on a heat sink 34 together with a serving for controlling and supplying the LEDs with electrical energy board. Furthermore, this assembly still contains the inventively provided at least one aperture, which in the size ratios of FIG. 2 but not recognizable.
  • the assembly of heat sink, circuit board, light source field, aperture and collecting lens field forms a so-called replacement light source 36.
  • the special parabolic reflector of FIG. 2 has three facets 38.1, 38.2, 38.3. Each two of the facets are separated by distances which lie in a plane which is parallel to a horizontal plane 40.
  • the reflector 30.1 can also be referred to as a horizontally faceted reflector.
  • the secondary optics system may comprise, for example, a parabolic mirror, in particular a faceted parabolic mirror, the focal point of which lies on the light exit surface of the primary optic array.
  • the parabolic reflector is faceted so that all facet surfaces are approximately equal distances to the common focus. All facet edges facing away from the optical axis (rotation axis) of the light module have greater distances to the common reflector focal point than the facet inner edges, which lie on the side of the optical axis.
  • the facet edges perpendicular to the light-dark boundary of the light distribution (ie vertical light-dark boundary in the striping light ⁇ horizontal facet edges).
  • the facet edges can also be annular and run concentrically around the optical axis (rotation axis) of the reflector.
  • the replacement light source 36 and the parabolic reflector 30.1 are arranged relative to each other so that the parabolic reflector is focused on the light exit surface of the collecting lens array of the complex light source 36.
  • focal points 37 of the parabolic reflector are not located in the light exit surfaces of the light-emitting diodes, but in the light exit surface 28 of the collector lens field, which coincides with the light exit surface of the replacement light source 36.
  • a switched-on light-emitting diode On the light exit surface of the collecting lens array, a switched-on light-emitting diode generates a single bright light field, wherein the bright light fields generated by adjacent light-emitting diodes adjoin one another, but have no overlap.
  • the sum of the individual bright light fields represents a primary, lying in the interior of the headlamp light distribution, which is realized by the secondary optics, which can also be referred to as projection optics and here by the parabolic reflector 30.1, in a prior to the headlight secondary light distribution is transferred.
  • FIG. 2 represents the secondary light distribution on a screen and has six horizontally adjacent, but not overlapping, light fields 48, each of which forms an image of a single light field of the primary light distribution, which is established on the light exit surface of the collecting lens array. Accordingly, in the in FIG. 2 illustrated embodiment, the number n of the light sources and converging lenses each equal to 6. If you turn off a light source and the adjacent light sources are turned on, creates a darkened area in the outer light distribution. A road user who is in this darkened area is therefore not blinded.
  • An optical axis 44 of the light module or of the optical system lies here in the intersection of a vertically arranged meridional plane 42 and a horizontally arranged sagittal plane 40.
  • the lying within a light field 48 of the secondary light distribution 50 and substantially horizontally extending lines 52 are lines of equal brightness (isolux lines), the brightness of a maximum, here prevailing at the level of the horizon brightness decreases up and down.
  • the illumination of the light fields 48 extending far above the horizon shows that it is a high-beam light distribution.
  • FIG. 3 shows a further embodiment of an optical system of a headlight according to the invention.
  • the object of FIG. 3 differs from the subject of FIG. 2 essentially by the fact that the secondary optics, which in the subject of the FIG. 2 is realized as a horizontal faceted parabolic reflector 30.1, the subject of the FIG. 3 is realized as a converging lens 30.2.
  • the explanation of the FIG. 2 also for them FIG. 3 ,
  • FIG. 4 shows the replacement light source 36. This shows FIG. 4a the spare light source in an assembled state, and FIG. 4b shows the spare light source in a disassembled state.
  • the light source field 16 is located on the circuit board 54.
  • the at least one aperture 24 is preferably a pinhole in the form of a plate which is arranged between the light source field 16 and the collecting lens array 22 and which has a diaphragm web for each pair of adjacent light sources of the light source field ,
  • the pinhole 24 has a number of recesses which is identical to the number of light sources of the light source field.
  • the recesses are arranged in the pinhole just so that in the mounted state exactly one recess of the pinhole in front of a light exit surface is exactly one light source of the light source field.
  • the webs lying between adjacent recesses form in this embodiment in each case a diaphragm which is arranged on the light entry surface side of two directly adjacent collecting lenses so that it shades the light entry surface of the one of the two converging lenses against light of the light source, the other of the two each other directly adjacent is assigned arranged collecting lenses.
  • the diaphragm webs are preferably arranged centrally between each two adjacent light-emitting diodes. They preferably have at least the same width as the light exit surfaces of the light-emitting diodes.
  • the screen webs are made of opaque material. This is true for all embodiments.
  • the collecting lens array 22 is preferably a one-piece cohesively coherent component, which consists of transparent material and is shaped so that for each light exit surface of the light emitting diode 16 of the light source field results in a converging lens, which is associated with the respective light source characterized in that a light entrance surface of this convergent lens in is the outgoing light beam from this light source and the Hauptlichtabstrahlraum this light source intersects.
  • the fixing of the relative positions of the light source, diaphragm webs and converging lenses is preferably carried out by form-locking elements.
  • these are screws 56 and provided for receiving and carrying the screws recesses 58 in lying outside the light exit surface edge regions of the collecting lens array 22, the pinhole 24, the light source field 16, the circuit board 54 and the heat sink 34.
  • the circuit board has a connector component 60th , which is adapted to be connected to a complementary plug component of a connecting cable.
  • FIG. 5 shows FIG. 5 the one in this view behind the convergent lens light exit surfaces of the LEDs 16.1 to 16.6. Without the inventively provided aperture, the following disturbing effect has been shown.
  • the external light sources 16.1, 16.6 and switched off internal light sources 16.3, 16.4 radiate the two innermost light sources serving as light emitting diodes from a certain brightness, so that their light fields can not darken as much as the light fields between the innermost, off light-emitting diodes and the switched outermost LEDs lying further LEDs 16.2 and 16.5.
  • FIG. 6 shows a cross section through the subject of the FIG. 5 which illustrates the genesis of this undesirable effect.
  • Stray light 62 originating from an outer edge region of the light bundle 61 emitted by the outer light source 16.1 falls onto the light entry surface of a converging lens 22.2 of the adjacent light-emitting diode 16.2.
  • This coupled scattered light falls below at such shallow angles to the light exit surface 28.2 of this converging lens 22.2, that it is not from the Light exit surface of this converging lens is coupled out, but is redirected to the light entrance side 26 of the collecting lens array.
  • the scattered light 62 is then coupled out via the light entrance side 26 of the collecting lens array 22, the light sources 16, this effect is particularly due to the plano-convex design of the individual converging lenses is facing.
  • this coupled-out light 62 then falls on the light exit surface of the next but one light emitting diode 16.3, coupled there in the phosphor layer of this light emitting diode and stimulates this phosphor layer to illuminate.
  • This undesirable light transport taking place via a converging lens of a further light-emitting diode lying between two light-emitting diodes is represented by the arrows 62.
  • FIG. 7 shows the subject of the FIG. 5 with an inventively provided aperture 24, which prevents unwanted coupling of stray light of a light source 16.1 in the converging lens 22.2 of an adjacent light source 16.2.
  • the opaque diaphragm webs 24.1, 24.2, 24.3, 24.4 and 24.5 of the diaphragm 24, the between the individual light sources 16.1, 16.2, 16.3, 16.4, 16.5 and 16.6 prevent, in particular, that scattered light 62 switched LEDs (for example, 16.1) on the phosphor layer turned off, over the next adjacent LEDs (for example, 16.3) passes.
  • the diaphragm webs are preferably located between the light entry surface 26 of the collector lens field and the in FIG. 8 illustrated light exit surface 17 of the light source field 16th
  • a width of the diaphragm webs have at least the width s of the light exit surfaces of the light emitting diodes to be screened, so that the switched off light emitting diodes are in the shadow of the diaphragm webs.
  • the diaphragm webs extend along the light exit surface of the light emitting diode that is parallel to the shading diaphragm edge of the constriction and that is arranged in the recess.
  • the width s of the light exit surfaces of the light-emitting diodes is usually between 0.3 mm and 2 mm for light-emitting diodes currently used for motor vehicles. It is understood, however, that the invention is also applicable to a headlamp with LEDs with deviating from these dimensions width s.
  • FIG. 8 shows a section through the subject of FIG. 7 and shows in particular diaphragm webs 24.1, 24.2, 24.3, 24.4 and 24.5, which lie on the light entry surface side 26 of the collective light field 22 between the individual light sources 16.1, 16.2, 16.3, 16.4, 16.5 and 16.6 and there in particular between each two directly adjacent collecting lenses so are arranged to shade the light entrance surface of the one of the two converging lenses against light of the light source, the other of the two directly adjacent to each other is assigned arranged collecting lenses.
  • the unwanted transport of stray light 62 is effectively prevented by the aperture 24.
  • FIG. 9 shows a light exit surface of a collecting lens array for an embodiment, which is characterized by a preferred shape of the recesses 70.1, 70.2, 70.3, 70.4, 70.5 and 70.6 in the pinhole 24.
  • the recesses are each separated by a lying between two adjacent recesses aperture web.
  • the preferred shape of the recess is characterized by the fact that its clear width in a direction in which a plurality of light emitting diodes 16. 1, 16.2, 16.3 and so on in a row next to each other, is smaller than in all other directions. In the FIG. 9 is this direction, in which a plurality of light exit surfaces are adjacent to each other, extending along the section line XX direction.
  • the inner recesses 70.2, 70.3, 70.4 and 70.5 of the series in the form of eight so formed with a constriction, so that one could also speak of a bone shape of the recesses.
  • the constriction is approximately as long as the width s of the parallel to the shading diaphragm edge light exit surface of the light emitting diode, which is arranged in the recess. With this length, the constriction extends along the parallel to the shading diaphragm edge of the constriction lying light exit surface of the light emitting diode, which is arranged in the recess.
  • the constriction is preferably where the light-emitting diode is, which is preferably arranged centrally in the recess.
  • the outer recesses 70.1, 70.6 are constricted there on one side, the one-sided constriction facing the adjacent light-emitting diode.
  • This constriction is preferably only as large as the width of the light exit surface of the light-emitting diode, which is to be shaded by the diaphragm.
  • the size of the constriction is meant the length of an edge along which the recess is constricted.
  • the recess may e.g. also be rectangular, round or elliptical, without this enumeration is to be understood as final. In these cases, however, not only stray light, but also usable luminous flux is shaded, which is undesirable for efficiency reasons.
  • the apertures are alternatively rectangular or square, wherein the sides can be curved. It is also preferable that different openings have different contours.
  • FIG. 10 illustrates the effect of the preferred embodiment.
  • the width b of the constriction of the recess preferably corresponds to the width of the s of the light-emitting diodes in the direction of the row arrangement.
  • the values of n and m can also differ from 4 and 10. However, these values are preferably greater than or equal to 3. In addition, n can also be equal to m.
  • the square apertures having the dimensions bxb are constricted in two directions, so that particularly small clearances b can be ensured to the nearest neighbors in the vertical and also in the horizontal direction.
  • the light exit surfaces of the light sources are here square with an edge length s, where s is slightly smaller than b.
  • the size B indicates the grid dimension of the arrangement, which corresponds for example to the distance of the center points of the light exit surfaces of two adjacent light sources.
  • This embodiment whose cross section in FIG. 12 is shown in particular also characterized by the fact that the opaque aperture material is embedded in the transparent lens material. This is especially true in the FIG. 12 clearly showing, for example, embedded in the transparent material of the collecting lens panel aperture web 24.j.
  • This type of embedding is independent of this particular embodiment preferred for all embodiments of the present invention.
  • the associated The advantage consists in a mechanical stabilization of the collecting lens field by the material of the diaphragm, which is stronger than that of the material of the collecting lens field.
  • a metallic material is preferably used as the diaphragm material.
  • a metallic pinhole gives the arrangement a desired stability. This is particularly advantageous if mechanically non-stressable material such as silicone rubber is used for the collecting lens field.
  • metal panels can be finished with the required accuracy of the openings, for example by punching or laser cutting.
  • FIG. 13 shows the subject of the FIGS. 11 and 12 in a perspective view. It is also preferred that the aperture 24 has a solderable surface.
  • the particular advantage of this embodiment is that the diaphragm can then be soldered together with the collecting lens array on the board 54 of the light emitting diodes with.
  • the diaphragm 24 preferably has a U-shape. At the ends of the U-legs facing away from the bottom of the U-shape, the diaphragm has holding means with which it can be fastened to the circuit board 54.
  • the holding means are, for example, plate-shaped or plate-shaped feet 80, which extend transversely to the U-legs and with which the aperture can be soldered as SMD (surface mounted device) together with the light-emitting diodes to the board.
  • SMD surface mounted device
  • the light sources and the overlying on the panel or the aperture as an embedded part having collecting lens array subject to the same systematic positional tolerances caused by the solder paste and the solder resist. These positional tolerances are compensated automatically.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP14177370.5A 2013-07-18 2014-07-17 Phare pour un phare de route anti-éblouissement Withdrawn EP2827049A3 (fr)

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DE102013214116.5A DE102013214116C5 (de) 2013-07-18 2013-07-18 Scheinwerfer für ein blendungsfreies Fernlicht

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107101150A (zh) * 2016-02-22 2017-08-29 法雷奥照明公司 设置有光源的子矩阵的光束投射装置、设置有该装置的照明和前灯模块
WO2018172140A1 (fr) * 2017-03-21 2018-09-27 Lumileds Holding B.V. Module optique et système d'éclairage frontal automobile pour véhicule à moteur
EP3450830A1 (fr) * 2017-09-04 2019-03-06 Toyota Jidosha Kabushiki Kaisha Dispositif d'éclairage pour véhicule
EP3492804A1 (fr) * 2017-12-04 2019-06-05 ZKW Group GmbH Phares de véhicule automobile et procédé
WO2019174840A1 (fr) * 2018-03-15 2019-09-19 HELLA GmbH & Co. KGaA Dispositif d'éclairage pour véhicules
FR3085739A1 (fr) * 2018-09-12 2020-03-13 Valeo Vision Module lumineux pour projecteur de vehicule automobile
DE102019108232A1 (de) * 2019-03-29 2020-10-01 Automotive Lighting Reutlingen Gmbh Teilfernlichtmodul für einen Kraftfahrzeugscheinwerfer
EP3767161A1 (fr) * 2019-07-17 2021-01-20 ZKW Group GmbH Dispositif d'éclairage pour un phare de véhicule automobile
EP3792547A1 (fr) * 2019-09-10 2021-03-17 Hella Gmbh & Co. Kgaa Phare de vèhicule sans éblouissement et véhicule automobile
FR3105349A1 (fr) * 2019-12-20 2021-06-25 Valeo Vision Dispositif d’éclairage et/ou de signalisation comprenant une pluralité d'éléments opaques.
FR3139773A1 (fr) * 2022-09-21 2024-03-22 Valeo Vision Module optique d’un système lumineux d’un véhicule automobile
EP3208529B1 (fr) * 2016-02-22 2024-03-27 Valeo Vision Dispositif de projection de faisceau lumineux muni d'une matrice de sources de lumiere, module d'eclairage et phare de véhicule automobile muni d'un tel dispositif

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016125420A1 (de) * 2016-12-22 2018-06-28 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für ein Fahrzeug
DE102019104722A1 (de) 2019-02-25 2020-08-27 Automotive Lighting Reutlingen Gmbh Scheinwerfer mit einer Mehrzahl von Halbleiterlichtquellen und einem einstückigen Primäroptikfeld
KR20240039872A (ko) 2022-09-20 2024-03-27 현대모비스 주식회사 차량용 램프

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4733335A (en) * 1984-12-28 1988-03-22 Koito Manufacturing Co., Ltd. Vehicular lamp
JP2571743Y2 (ja) * 1991-12-20 1998-05-18 タキロン株式会社 ドットマトリクス発光表示体用表面集光板
KR20070062612A (ko) * 2002-12-26 2007-06-15 산요덴키가부시키가이샤 조명 장치
WO2008027692A2 (fr) * 2006-08-02 2008-03-06 Abu-Ageel Nayef M Système d'éclairage basé sur del
DE102008013603B4 (de) * 2008-03-11 2017-06-22 Automotive Lighting Reutlingen Gmbh Lichtmodul für eine Beleuchtungseinrichtung
JP5457219B2 (ja) * 2010-02-16 2014-04-02 株式会社小糸製作所 光学ユニット

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

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* Cited by examiner, † Cited by third party
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EP3208529B1 (fr) * 2016-02-22 2024-03-27 Valeo Vision Dispositif de projection de faisceau lumineux muni d'une matrice de sources de lumiere, module d'eclairage et phare de véhicule automobile muni d'un tel dispositif
CN107101150A (zh) * 2016-02-22 2017-08-29 法雷奥照明公司 设置有光源的子矩阵的光束投射装置、设置有该装置的照明和前灯模块
WO2018172140A1 (fr) * 2017-03-21 2018-09-27 Lumileds Holding B.V. Module optique et système d'éclairage frontal automobile pour véhicule à moteur
US10538193B2 (en) 2017-09-04 2020-01-21 Toyota Jidosha Kabushiki Kaisha Illumination device for vehicle
EP3450830A1 (fr) * 2017-09-04 2019-03-06 Toyota Jidosha Kabushiki Kaisha Dispositif d'éclairage pour véhicule
EP3492804A1 (fr) * 2017-12-04 2019-06-05 ZKW Group GmbH Phares de véhicule automobile et procédé
WO2019110476A1 (fr) * 2017-12-04 2019-06-13 Zkw Group Gmbh Projecteur de véhicule automobile et procédé
CN111406182A (zh) * 2017-12-04 2020-07-10 Zkw集团有限责任公司 机动车大灯和方法
US11365859B2 (en) 2017-12-04 2022-06-21 Zkw Group Gmbh Motor vehicle headlight and method
WO2019174840A1 (fr) * 2018-03-15 2019-09-19 HELLA GmbH & Co. KGaA Dispositif d'éclairage pour véhicules
US11231158B2 (en) 2018-03-15 2022-01-25 HELLA GmbH & Co. KGaA Illumination apparatus for a vehicle with light sources, guide elements and optical separation function
CN111868435B (zh) * 2018-03-15 2022-07-19 海拉有限双合股份公司 用于车辆的照明装置
CN111868435A (zh) * 2018-03-15 2020-10-30 海拉有限双合股份公司 用于车辆的照明装置
FR3085739A1 (fr) * 2018-09-12 2020-03-13 Valeo Vision Module lumineux pour projecteur de vehicule automobile
WO2020053192A1 (fr) * 2018-09-12 2020-03-19 Valeo Vision Module lumineux pour projecteur de véhicule automobile
CN112673208A (zh) * 2018-09-12 2021-04-16 法雷奥照明公司 用于机动车辆前照灯的照明模块
US11572993B2 (en) 2018-09-12 2023-02-07 Valeo Vision Light module for motor vehicle headlamp
EP3719391A1 (fr) 2019-03-29 2020-10-07 Marelli Automotive Lighting Reutlingen (Germany) GmbH Module de feu de route partiel pour un phare de véhicule automobile
DE102019108232A1 (de) * 2019-03-29 2020-10-01 Automotive Lighting Reutlingen Gmbh Teilfernlichtmodul für einen Kraftfahrzeugscheinwerfer
US11746980B2 (en) 2019-07-17 2023-09-05 Zkw Group Gmbh Illumination apparatus for a motor vehicle headlight
CN114026360A (zh) * 2019-07-17 2022-02-08 Zkw集团有限责任公司 用于机动车前照灯的照明设备
EP3767161A1 (fr) * 2019-07-17 2021-01-20 ZKW Group GmbH Dispositif d'éclairage pour un phare de véhicule automobile
WO2021008793A1 (fr) * 2019-07-17 2021-01-21 Zkw Group Gmbh Dispositif d'éclairage destiné à un phare de véhicule automobile
CN114026360B (zh) * 2019-07-17 2024-03-26 Zkw集团有限责任公司 用于机动车前照灯的照明设备
EP3792547A1 (fr) * 2019-09-10 2021-03-17 Hella Gmbh & Co. Kgaa Phare de vèhicule sans éblouissement et véhicule automobile
FR3105349A1 (fr) * 2019-12-20 2021-06-25 Valeo Vision Dispositif d’éclairage et/ou de signalisation comprenant une pluralité d'éléments opaques.
FR3139773A1 (fr) * 2022-09-21 2024-03-22 Valeo Vision Module optique d’un système lumineux d’un véhicule automobile
WO2024062056A1 (fr) * 2022-09-21 2024-03-28 Valeo Vision Module optique d'un système lumineux d'un véhicule automobile

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EP2827049A3 (fr) 2015-10-21
DE102013214116B4 (de) 2015-05-07
DE102013214116C5 (de) 2018-07-05

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