EP3339720A1 - Primary lens assembly for use in a motor vehicle lighting device and motor vehicle lighting device with such a primary lens assembly - Google Patents

Primary lens assembly for use in a motor vehicle lighting device and motor vehicle lighting device with such a primary lens assembly Download PDF

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Publication number
EP3339720A1
EP3339720A1 EP17202043.0A EP17202043A EP3339720A1 EP 3339720 A1 EP3339720 A1 EP 3339720A1 EP 17202043 A EP17202043 A EP 17202043A EP 3339720 A1 EP3339720 A1 EP 3339720A1
Authority
EP
European Patent Office
Prior art keywords
elements
primary optic
primary
holder
optic elements
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
Application number
EP17202043.0A
Other languages
German (de)
French (fr)
Other versions
EP3339720B1 (en
Inventor
Stephan Braun
Ralph CHOR
Anton Jost
Waldemar Klein
Lothar Pfitzner
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
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Publication date
Application filed by Automotive Lighting Reutlingen GmbH filed Critical Automotive Lighting Reutlingen GmbH
Publication of EP3339720A1 publication Critical patent/EP3339720A1/en
Application granted granted Critical
Publication of EP3339720B1 publication Critical patent/EP3339720B1/en
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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
    • F21S41/20—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
    • F21S41/29—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
    • F21S41/60—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
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a primary optic assembly for use in a lighting device of a motor vehicle.
  • the primary optic assembly comprises a plurality of primary optic elements arranged in matrix-like fashion next to one another and / or one above the other, each having a light entry surface at a proximal end of a primary optic element and a light exit surface at a distal end of the primary optic element and a cross section increasing from the proximal end to the distal end.
  • the cross section is smaller along a longitudinal extension of the primary optic elements than a distance between the entry surface and the exit surface.
  • the primary optic elements thus each lead in the manner of one Light guide via the entrance surface coupled light to the exit surface, wherein the light is focused due to the increasing cross section of the light guide.
  • the primary optic elements are made of a dimensionally stable, but elastically deformable, transparent material and positioned and fastened by means of a holder to a light source or a light source carrier of the illumination device, wherein the holder has holding elements for positioning the primary optic elements in the region of their proximal ends.
  • the invention also relates to a lighting device of a motor vehicle, in particular a motor vehicle headlight.
  • the lighting device comprises a housing with a light exit opening closed by a transparent cover pane and a light module arranged therein.
  • the light module has a luminous means for emitting light and a primary optics module with a plurality of primary optic elements arranged in matrix-like fashion next to one another and / or one above another for bundling at least part of the emitted light.
  • Such primary optic assemblies are known in the art. For example, describes the DE 10 2011 085 315 A1 a primary optic assembly comprising an array of a plurality of matrix-like juxtaposed and superimposed primary optic elements. Each of the primary optics elements is associated with at least one semiconductor light source (eg LED) and focuses the light emitted by it.
  • semiconductor light source eg LED
  • the primary optic elements of the optical array are commonly made in the prior art from transparent thermoplastics or silicones.
  • the individual primary optic elements are positioned and fixed by means of a mechanical interface on the light source (eg the LEDs) or a light source carrier (eg a common printed circuit board of the LEDs).
  • a primary optic assembly of the type mentioned is, for example, also from the US 2008/0 253 144 A1 known.
  • the known assembly has a plurality of individual primary optic elements made of silicone, which are each held individually by means of separate retaining clips on a holder.
  • Each individual primary optic element has a fastening section, on which the retaining clip acts, and a separate optically effective region. This is intended to ensure that the retaining clips, which exert a locally limited force on the elastically deformable primary optic elements, do not impair the optical properties of optically effective regions of the primary optic elements.
  • the problem is the complicated structure, the complex installation and the large footprint of such a primary optics assembly.
  • a primary optic assembly in which the individual primary optic elements are integrally formed of silicone and arranged in a matrix-like manner next to and / or above one another.
  • the primary optic elements are arranged in a holder with a plurality of likewise matrix-like arranged holding elements and held therein.
  • a lens made of a thermoplastic is sprayed directly on, which is rigid and solid after curing. The lens serves to stabilize and support the primary optic elements in the holder.
  • the holding elements of the holder have at their proximal ends on each positioning opening, which are exactly the same as the corresponding outer peripheral surfaces of the Primary optic elements are formed.
  • the corresponding outer peripheral surfaces of the respectively introduced primary optic elements lie on the inner peripheral surfaces of the holding elements in a line-shaped manner.
  • an approximately circular contact line between the outer peripheral surface of the proximal end of the primary optic element and the corresponding holding element thus results in the region of the positioning opening.
  • Object of the present invention is to position the primary optic elements of the primary optic assembly of the type mentioned in a simple way as accurately as possible with respect to the light source.
  • the positioning and attachment should be cost-effective and automated by means of a mounting robot.
  • the holder has a tension spring element which fixes the primary optics with fully inserted into the holder primary optic elements relative to the holder, and that the primary optic elements in the region of their distal ends integral with directly formed adjacent primary optic elements that the outer primary optic elements have in the region of their distal ends radially outwardly projecting edge portions, that the holder has a peripheral support surface for the edge portions of the fully inserted into the holder primary optics and the edge portions between the tension spring element and the support surface are clamped.
  • proximal and distal are used in the context of the present description from the perspective of the illuminant. Regions or portions of components of the primary optic assembly that are located close to the illuminant (e.g., the LEDs) of the illuminator are referred to as proximal regions or portions. Likewise, portions or portions of components of the primary optic assembly that are located remotely from the light source (e.g., the LEDs) of the illumination device are referred to as distal regions or portions.
  • the individual primary optics elements form light guides, which bundle light which was emitted by the light source and was coupled into the light guides via the light entry surfaces on the way through the light guide to the light exit surface.
  • the primary optic is made of a dimensionally stable, but elastically deformable transparent material, for example an elastomer, in particular silicone.
  • the primary optics with the many elastic light guides can be positioned and fixed by means of the holder in front of the light source, in particular in front of a multiplicity of LEDs arranged in the manner of a matrix.
  • the primary optic elements are formed in the region of their distal ends in one piece with immediately adjacent primary optic elements. This means that the individual light guides are connected to each other in the area of their light exit surfaces. In this way one obtains a single, easy-to-handle primary optic made of the dimensionally stable, but elastically deformable material (eg silicone). In the region of the distal ends, therefore, the primary optic elements have a certain stability, since they can support one another in the region of their exit surfaces due to the one-piece design.
  • the primary optic elements must also be positioned and fixed in the region of their distal ends; However, it is not absolutely necessary that each individual primary optic element is separately positioned and fixed at its distal end. Rather, it is sufficient if some of the primary optic elements, preferably the outer primary optic elements of a plurality of matrix-like side by side and superimposed primary optic elements are positioned and fixed in the region of their distal ends on the holding element. The remaining primary optic elements are then also positioned and fixed by the fixed distal ends on the outer edge of the primary optic array.
  • the holder comprises a tension spring element which fixes the primary optic elements with primary optic elements completely inserted into the holder relative to the holder.
  • the tension spring element is preferably made of spring steel.
  • a radially outwardly projecting edge of the primary optic array is clamped between a support surface of the holder and the tension spring element. It is sufficient if the tension spring element clamps the outer edge on two opposite sides of the primary optic array.
  • a contact spring element of the tension spring element can produce an electrical connection between the primary optics elements and the illuminant carrier for ground connection.
  • the proximal ends of the elongated optical fibers require a high-precision positioning and fixation with respect to the lamps.
  • the holder is provided in the primary optic assembly according to the invention.
  • the holder is designed to close the proximal ends of the primary optic elements with an accuracy of Range of about 0.06 mm in terms of offset and distance of the light entry surfaces of the primary optic elements with respect to a light exit surface of a light source of the lighting device to position and secure.
  • FIG. 1 is an inventive Lighting device of a motor vehicle in its entirety by the reference numeral 1 denotes.
  • the lighting device 1 is designed as a headlight; but it could also be designed as a motor vehicle light to the front, rear or side of the vehicle.
  • the headlight 1 has a housing 2, which is preferably made of plastic.
  • the headlight housing 2 has a light exit opening 4, which is closed by means of a transparent cover 5.
  • the cover 5 is made of glass or plastic.
  • Optically effective profiles eg prisms or cylindrical lenses
  • a light module 6 is arranged inside the headlight housing 2.
  • the light module 6 can serve to generate any desired headlight function or a part thereof.
  • the light module 6 can be used to produce a low beam distribution, a high beam distribution, a fog light distribution or any adaptive light distribution.
  • a further light module 7 can be arranged in the housing 2. This serves, for example, to generate another headlight function. It would also be conceivable that the light modules 6, 7 together generate a specific headlight function.
  • the light module 7 could produce a low beam basic light distribution with a relatively wide spread and a horizontal cut-off.
  • the light module 6 could then generate a low-beam spotlight distribution, which compared to the Low beam basic light distribution of the light module 7 is relatively concentrated and at the top has an asymmetric cut-off. A superposition of the basic light distribution and the spotlight distribution results in a conventional low-beam distribution.
  • the headlight housing 2 in addition to the light modules 6, 7 further light modules are arranged.
  • only one light module for example the light module 6 without the light module 7, can be arranged in the spotlight housing 2.
  • luminaire module 8 such as the luminaire module 8 shown by way of example, to be arranged in the housing 2.
  • the lighting module 8 is used to generate any lighting function, such as a flashing light, a position light, a daytime running light, etc.
  • the light modules 6, 7 and the lighting module 8 each have a lighting means 100 (see. FIG. 3 ) to emit light.
  • the luminous means 100 may, for example, have a plurality of semiconductor light sources (LEDs) 102, which are arranged next to and / or above one another like a matrix (so-called LED array). However, it would also be conceivable for the lighting means 100 to have at least one semiconductor light source (LED) which has a plurality of adjacent and / or superimposed LED chips.
  • the LEDs 102 can be arranged on a common illuminant carrier 104, which is designed, for example, as a printed circuit board (so-called PCB), which carries the LEDs 102 both mechanically and also in electrical contact.
  • the illuminant carrier 104 may be mounted on a heat sink 106 in order to heat the heat generated during the operation of the LEDs 102 to the environment (eg into the interior of the Housing 2 of the lighting device 1) leave.
  • the light modules 6, 7 or the luminaire module 8 can have a primary optics module 10 according to the invention, as shown by way of example in FIGS Figures 2 and 3 is shown and described below in order to bundle at least a portion of the light emitted by the light emitting means 100 and to form as desired.
  • the light bundle bundled and shaped by the primary optics module 10 can be used directly to generate a desired light distribution of the illumination device 1.
  • the light beam would only pass through the cover plate 5 and - if present - are scattered by the optically active profiles arranged thereon.
  • the light bundle bundled and shaped by the primary optics assembly initially passes through a secondary optic, which is designed, for example, as a converging lens or as a reflector, in order to project the light bundle to generate a desired light distribution of the illumination device 1 on the roadway in front of it To project motor vehicle.
  • a secondary optic which is designed, for example, as a converging lens or as a reflector, in order to project the light bundle to generate a desired light distribution of the illumination device 1 on the roadway in front of it To project motor vehicle.
  • the primary optic assembly 10 is in FIG. 3 in their entirety and in FIG. 4 shown in the clipping. It comprises a plurality of primary optic elements 12 arranged side by side and / or one above the other, each having a light entry surface 14 at a proximal end 13 of a primary optic element 12 and a light exit surface 16 at a distal end 15 of the primary optic element 12 and a cross section increasing from the proximal end to the distal end exhibit.
  • the primary optic elements 12 have a longitudinal extension (distance between the entry surface 14 and the exit surface 16) which is significantly larger than any cross section of the primary optic elements 12 along the longitudinal extent.
  • the primary optic elements 12 are made of a dimensionally stable, but elastically deformable transparent material, for example an elastomer, in particular silicone, and are positioned and fastened by means of a holder 20 to the luminous means 100 or the illuminant carrier 104 of the illuminating device 1.
  • the holder 20 has holding elements 22 for the highly accurate positioning of the primary optic elements 12 in the region of their proximal ends 13.
  • the primary optic elements 12 are preferably formed in the region of their distal ends 15 in one piece with directly adjacent primary optic elements 12, so that the light exit surfaces 16 of the individual primary optic elements directly adjoin one another and merge into one another.
  • the individual exit surfaces 16 are thus delimited by kinks to each other.
  • the exit surfaces 16 of the individual primary optic elements 12 are simply delimited only with the naked eye indistinguishable functional surface elements of a single common light exit surface of all primary optic elements 12 and not by kinks to each other.
  • the holding elements 22 are designed to receive and position the proximal ends 13 of the individual primary optic elements 12. They each have a receiving and guiding area for one of the primary optics elements 12.
  • the receiving and guiding region has a longitudinal extent which runs essentially parallel to the longitudinal extent of the primary optic elements 12.
  • the receiving and guiding regions of the holding elements 22 have lateral guide surfaces 24, which extend from a proximal portion 23 of the holding elements 22 to a distal portion 25 of the holding elements 22.
  • One Distance between opposing guide surfaces 24 of a holding member 22 increases from the proximal portion 23 to the distal portion 25.
  • the distance between opposing guide surfaces 24 in the distal sections 25 of the holding elements 22 corresponds to a cross section of an insertion opening 26 of the holding elements 22 for the primary optic elements 12.
  • the distance between opposing guide surfaces 24 in the proximal portions 23 of the holding elements 22 corresponds to a cross section of a positioning opening 28 of the holding elements 22 for the primary optic elements 12.
  • the guide surfaces 24 of the holding elements 22 of the holder 20 are designed such that upon insertion of the primary optic 12 in the holder 20 via the distal portions 25 of the holding elements 22, the proximal ends 13 of the primary optic elements 12 slide along the guide surfaces 24 and the guide surfaces 24 guide the proximal ends 13 of the primary optic elements 12 into the proximal portions 23 of the holding elements 22.
  • the holding elements 22 and the primary optic elements 12 viewed at least in a common cross section in the region of a proximal portion 23 of the holding elements 22 and the proximal end 13 of the primary optic elements 12, in particular in a cross section in the region of the positioning openings 28, each different shaped cross sections.
  • the positioning apertures 28 have a circular or oval cross-section without any kinks or edges.
  • the primary optic elements 12 in the illustrated cross-section have the shape of a polygon having a plurality of corners 31, in this case an octagon having eight corners.
  • the polygon can also be called be formed any other polygon.
  • the polygon is preferably not rolled over, need not be equilateral, equiangular and / or regularly formed. It is important that the outer peripheral surface of the primary optic 12 has in cross section a plurality of corners which are distributed over the outer periphery, that the primary optic 12 rests selectively on the guide surfaces 24 and is held in the holding element 22. In the region of the proximal ends 13 of the primary optic elements 12, the outer surface of which lies only with the corners 31 on the inner peripheral or guide surfaces 24 of the holding elements 22, so that a punctiform overlay results in the cross section.
  • the holder 20 has a tension spring element 30 which fixes the primary optic elements 12 relative to the holder 20 when the primary optic elements 12 are inserted completely into the holder 20. If the primary optic elements 12 are formed in the region of their distal ends 15 in one piece with directly adjacent primary optic elements 12, the outer primary optic elements 12 can have radially outwardly projecting edge sections 17 in the region of their distal ends 15.
  • the holder 20 has an outer peripheral to the holding elements 22 supporting surface 21 for the edge portions 17 of the fully inserted into the holder 20 primary optics 12. The edge portions 17 are clamped between the tension spring element 30 and the support surface 21.
  • the tension spring element 30 is made of an electrically conductive material, in particular of steel, and serves for ground connection of the entire primary optics assembly 10.
  • the tension spring element 30 in an assembled state of the primary optics assembly 10 via at least one contact spring element 33 an electrical connection between the primary optics 12 and a light source carrier 104 ago.
  • the contact spring elements 33 preferably provide the ground connection via the side of the illuminant carrier 104 on which the light sources 102 are mounted. Furthermore, a single contact spring element 33 is sufficient.
  • the light source carrier 104 is formed, for example, as a printed circuit board on which the semiconductor light sources 102 are fixed and electrically contacted.
  • the contact spring element 33 is preferably formed integrally with the tension spring element 30.
  • the tension spring element 30 can also have separate stirrups or tongues, which provide electrical contact to the illuminant carrier 104 or the electrical connection therewith produce standing component.
  • the holder 20 In the region of the interface to the primary optical elements 12 or the edge region 17, the holder 20 has a defined protrusion (recess 21a with a larger extent than the peripheral area 17 to be accommodated) be able to compensate for the temperature expansion effects arising during operation.
  • the holder 20 has pin-shaped elements 29 which are formed on the outside of the holder 20, preferably on the outside on two opposite sides of the holder 20.
  • the elements 29 are preferably pins which serve to attach the entire primary optics module 10 to the remaining light module 6, 7, for example via the illuminant carrier 104, by means of gluing.
  • the pin-shaped elements 29 may also represent spacer elements which hold the entire primary optics assembly 10 at the assembly to the illuminant carrier 104 of the illumination device 1 at a defined distance from the illuminant 100. Special receiving geometries and positioning holes 29a on the holder 20 make it possible to pick up the entire assembly 10 with the aid of a mounting robot and to position it fully automatically.
  • the holder 20 is preferably made of a metal, in particular of aluminum. It is produced in a thixomolding process (so-called semi-solid metal casting (SSM)). It is a metal forming process that combines the benefits of casting and forging.
  • SSM semi-solid metal casting
  • the metal to be processed is heated to the transition temperature between solid and liquid. At this threshold, the thixotropic state is reached. In the thixotropic state, the viscosity of the material decreases.
  • the plasticine-like metal can be very precisely pressed into molds with low pressures.
  • the luminous means 100 is - as stated - preferably formed as an LED matrix.
  • the LED matrix 100 has a plurality of LED chips 102 arranged side by side and one above the other like a matrix.
  • the primary optic has several matrix-like juxtaposed and superimposed primary optic elements 12. In the illustrated embodiment, each LED chip 102 is assigned its own primary optics element 12. The light emitted by the LEDs 102 is largely coupled via the light entry surface 14 into the primary optics elements 12.
  • Headlamp 1 with such bulbs 100 in the form of an LED matrix and with the matrix-like arranged primary optics 12 are also referred to as matrix headlights, since they produce a resulting light distribution with a plurality of side by side and / or superimposed pixel or strip-shaped partial light distributions.
  • the individual partial light distributions, which are generated by the light of an LED 102 and the associated primary optics element 12, are also referred to as pixels.
  • the resulting light distribution will have a multiplicity of pixels arranged next to and above one another. In particular, in the illustrated embodiment, the pixels are arranged in three rows as well as in a plurality of columns. Each pixel of the light distribution is generated by an LED chip 102 in cooperation with the associated primary optics element 12 and, if present, after projection by a secondary optics.

Abstract

Die Erfindung betrifft eine Primäroptikbaugruppe (10) zum Einsatz in einer Beleuchtungseinrichtung (1) eines Kraftfahrzeugs, die mehrere nebeneinander und/oder übereinander angeordnete längliche Primäroptikelemente (12), die jeweils ein proximales Ende (13) und ein distales Ende (15) und einen von dem proximalen Ende (13) zu dem distalen Ende (15) hin zunehmenden Querschnitt aufweisen. Es wird vorgeschlagen, dass die Primäroptikelemente (12) aus einem formfesten, aber elastisch verformbaren, transparenten Material gefertigt und mittels einer Halterung (20) an einem Leuchtmittel (100) oder einem Leuchtmittelträger (104) der Beleuchtungseinrichtung (1) positioniert und befestigt sind, wobei die Halterung (20) Halteelemente (22) zur hochgenauen Positionierung der Primäroptikelemente (12) im Bereich ihrer proximalen Enden (13) aufweist.The invention relates to a primary optic assembly (10) for use in an illumination device (1) of a motor vehicle, which comprises a plurality of longitudinal primary optic elements (12) arranged side by side and / or one above the other, each having a proximal end (13) and a distal end (15) from the proximal end (13) to the distal end (15) towards increasing cross section. It is proposed that the primary optics elements (12) are produced from a dimensionally stable, but elastically deformable, transparent material and are positioned and fastened by means of a holder (20) to a light source (100) or a light source carrier (104) of the illumination device (1), wherein the holder (20) holding elements (22) for highly accurate positioning of the primary optic elements (12) in the region of their proximal ends (13).

Description

Die vorliegende Erfindung betrifft eine Primäroptikbaugruppe zum Einsatz in einer Beleuchtungseinrichtung eines Kraftfahrzeugs. Die Primäroptikbaugruppe umfasst mehrere matrixartig nebeneinander und/oder übereinander angeordnete Primäroptikelemente, die jeweils eine Lichteintrittsfläche an einem proximalen Ende eines Primäroptikelements und eine Lichtaustrittsfläche an einem distalen Ende des Primäroptikelements und einen von dem proximalen Ende zu dem distalen Ende hin zunehmenden Querschnitt aufweisen. Der Querschnitt ist entlang einer Längserstreckung der Primäroptikelemente kleiner als ein Abstand zwischen der Eintrittsfläche und der Austrittsfläche. Die Primäroptikelemente leiten somit jeweils nach Art eines Lichtleiters über die Eintrittsfläche eingekoppeltes Licht an die Austrittsfläche, wobei das Licht aufgrund des zunehmenden Querschnitts der Lichtleiter gebündelt wird. Die Primäroptikelemente sind aus einem formfesten, aber elastisch verformbaren, transparenten Material gefertigt und mittels einer Halterung an einem Leuchtmittel oder einem Leuchtmittelträger der Beleuchtungseinrichtung positioniert und befestigt, wobei die Halterung Halteelemente zur Positionierung der Primäroptikelemente im Bereich ihrer proximalen Enden aufweist.The present invention relates to a primary optic assembly for use in a lighting device of a motor vehicle. The primary optic assembly comprises a plurality of primary optic elements arranged in matrix-like fashion next to one another and / or one above the other, each having a light entry surface at a proximal end of a primary optic element and a light exit surface at a distal end of the primary optic element and a cross section increasing from the proximal end to the distal end. The cross section is smaller along a longitudinal extension of the primary optic elements than a distance between the entry surface and the exit surface. The primary optic elements thus each lead in the manner of one Light guide via the entrance surface coupled light to the exit surface, wherein the light is focused due to the increasing cross section of the light guide. The primary optic elements are made of a dimensionally stable, but elastically deformable, transparent material and positioned and fastened by means of a holder to a light source or a light source carrier of the illumination device, wherein the holder has holding elements for positioning the primary optic elements in the region of their proximal ends.

Die Erfindung betrifft außerdem eine Beleuchtungseinrichtung eines Kraftfahrzeugs, insbesondere einen Kraftfahrzeugscheinwerfer. Die Beleuchtungseinrichtung umfasst ein Gehäuse mit einer durch eine transparente Abdeckscheibe verschlossenen Lichtaustrittsöffnung und ein darin angeordnetes Lichtmodul. Das Lichtmodul weist ein Leuchtmittel zum Aussenden von Licht und eine Primäroptikbaugruppe mit mehreren matrixartig nebeneinander und/oder übereinander angeordneten Primäroptikelementen zum Bündeln zumindest eines Teils des ausgesandten Lichts auf.The invention also relates to a lighting device of a motor vehicle, in particular a motor vehicle headlight. The lighting device comprises a housing with a light exit opening closed by a transparent cover pane and a light module arranged therein. The light module has a luminous means for emitting light and a primary optics module with a plurality of primary optic elements arranged in matrix-like fashion next to one another and / or one above another for bundling at least part of the emitted light.

Derartige Primäroptikbaugruppen sind aus dem Stand der Technik bekannt. So beschreibt bspw. die DE 10 2011 085 315 A1 eine Primäroptikbaugruppe umfassend ein Array von einer Vielzahl von matrixartig neben- und übereinander angeordneter Primäroptikelemente. Jedes der Primäroptikelemente ist mindestens einer Halbleiterlichtquelle (z.B. LED) zugeordnet und bündelt das von dieser ausgesandte Licht.Such primary optic assemblies are known in the art. For example, describes the DE 10 2011 085 315 A1 a primary optic assembly comprising an array of a plurality of matrix-like juxtaposed and superimposed primary optic elements. Each of the primary optics elements is associated with at least one semiconductor light source (eg LED) and focuses the light emitted by it.

Die Primäroptikelemente des Optikarrays werden im Stand der Technik üblicherweise aus transparenten Thermoplasten oder Silikonen hergestellt. Die einzelnen Primäroptikelemente werden mittels einer mechanischen Schnittstelle am Leuchtmittel (z.B. den LEDs) bzw. einem Leuchtmittelträger (z.B. einer gemeinsamen Leiterplatte der LEDs) positioniert und befestigt.The primary optic elements of the optical array are commonly made in the prior art from transparent thermoplastics or silicones. The individual primary optic elements are positioned and fixed by means of a mechanical interface on the light source (eg the LEDs) or a light source carrier (eg a common printed circuit board of the LEDs).

Eine Primäroptikbaugruppe der eingangs genannten Art ist bspw. auch aus der US 2008/0 253 144 A1 bekannt. Die bekannte Baugruppe weist eine Vielzahl einzelner Primäroptikelemente aus Silikon auf, die jeweils einzeln mittels separater Haltebügel an einer Halterung gehalten sind. Jedes einzelne Primäroptikelement weist einen Befestigungsabschnitt auf, auf den der Haltebügel wirkt, sowie einen davon getrennten optisch wirksamen Bereich auf. Dadurch soll sichergestellt werden, dass die Haltebügel, die eine lokal begrenzte Kraft auf die elastisch verformbaren Primäroptikelemente ausüben, die optischen Eigenschaften optisch wirksamen Bereiche der Primäroptikelemente nicht beeinträchtigen. Problematisch ist der komplizierte Aufbau, die aufwendige Montage und der große Platzbedarf einer solchen Primäroptikbaugruppe.A primary optic assembly of the type mentioned is, for example, also from the US 2008/0 253 144 A1 known. The known assembly has a plurality of individual primary optic elements made of silicone, which are each held individually by means of separate retaining clips on a holder. Each individual primary optic element has a fastening section, on which the retaining clip acts, and a separate optically effective region. This is intended to ensure that the retaining clips, which exert a locally limited force on the elastically deformable primary optic elements, do not impair the optical properties of optically effective regions of the primary optic elements. The problem is the complicated structure, the complex installation and the large footprint of such a primary optics assembly.

Ferner ist aus der EP 2 847 509 B1 eine Primäroptikbaugruppe bekannt, bei der die einzelnen Primäroptikelemente einstückig aus Silikon ausgebildet und matrixartig neben- und/oder übereinander angeordnet sind. Die Primäroptikelemente werden in einer Halterung mit mehreren ebenfalls matrixartig angeordneten Halteelementen angeordnet und darin gehalten. Auf der Lichtaustrittsseite der Primäroptikelemente ist eine Lichtscheibe aus einem Thermoplast direkt aufgespritzt, die nach dem Aushärten starr und fest ist. Die Lichtscheibe dient zur Stabilisierung und Halterung der Primäroptikelemente in der Halterung. Die Halteelemente der Halterung weisen an ihren proximalen Enden jeweils Positionieröffnung auf, die genau gleich wie die entsprechenden Außenumfangsflächen der Primäroptikelemente geformt sind. Somit liegen an den Innenumfangsflächen der Halteelemente die entsprechenden Außenumfangsflächen der jeweils eingeführten Primäroptikelemente linienförmig an. In einem Querschnitt quer zu einer Längserstreckung eines Primäroptikelements betrachtet ergibt sich also im Bereich der Positionieröffnung eine in etwa kreisförmige Berührungslinie zwischen der Außenumfangsfläche des proximalen Endes des Primäroptikelements und dem entsprechenden Halteelement.Furthermore, from the EP 2 847 509 B1 a primary optic assembly is known, in which the individual primary optic elements are integrally formed of silicone and arranged in a matrix-like manner next to and / or above one another. The primary optic elements are arranged in a holder with a plurality of likewise matrix-like arranged holding elements and held therein. On the light exit side of the primary optic elements, a lens made of a thermoplastic is sprayed directly on, which is rigid and solid after curing. The lens serves to stabilize and support the primary optic elements in the holder. The holding elements of the holder have at their proximal ends on each positioning opening, which are exactly the same as the corresponding outer peripheral surfaces of the Primary optic elements are formed. Thus, the corresponding outer peripheral surfaces of the respectively introduced primary optic elements lie on the inner peripheral surfaces of the holding elements in a line-shaped manner. In a cross-section, viewed transversely to a longitudinal extent of a primary optic element, an approximately circular contact line between the outer peripheral surface of the proximal end of the primary optic element and the corresponding holding element thus results in the region of the positioning opening.

Aufgabe der vorliegenden Erfindung ist es, die Primäroptikelemente der Primäroptikbaugruppe der eingangs genannten Art auf eine einfache Art möglichst genau in Bezug auf das Leuchtmittel zu positionieren. Vorzugsweise sollte die Positionierung und Befestigung kostengünstig und mittels eines Montageroboters automatisiert realisierbar sein.Object of the present invention is to position the primary optic elements of the primary optic assembly of the type mentioned in a simple way as accurately as possible with respect to the light source. Preferably, the positioning and attachment should be cost-effective and automated by means of a mounting robot.

Zur Lösung dieser Aufgabe wird ausgehend von der Primäroptikbaugruppe der eingangs genannten Art vorgeschlagen, dass die Halterung ein Spannfederelement aufweist, welches die Primäroptikelemente bei vollständig in die Halterung eingesetzten Primäroptikelementen relativ zu der Halterung fixiert, und dass die Primäroptikelemente im Bereich ihrer distalen Enden einstückig mit unmittelbar angrenzenden Primäroptikelementen ausgebildet sind, dass die äußeren Primäroptikelemente im Bereich ihrer distalen Enden radial nach außen abstehende Randabschnitte aufweisen, dass die Halterung eine umlaufende Auflagefläche für die Randabschnitte der vollständig in die Halterung eingesetzten Primäroptikelemente aufweist und die Randabschnitte zwischen dem Spannfederelement und der Auflagefläche eingespannt sind.To solve this problem is proposed starting from the primary optics assembly of the type mentioned above, that the holder has a tension spring element which fixes the primary optics with fully inserted into the holder primary optic elements relative to the holder, and that the primary optic elements in the region of their distal ends integral with directly formed adjacent primary optic elements that the outer primary optic elements have in the region of their distal ends radially outwardly projecting edge portions, that the holder has a peripheral support surface for the edge portions of the fully inserted into the holder primary optics and the edge portions between the tension spring element and the support surface are clamped.

Die Begriffe proximal und distal werden im Kontext der vorliegenden Beschreibung aus Sicht des Leuchtmittels verwendet. Bereiche oder Abschnitte von Bauteilen der Primäroptikanordnung, die dicht an dem Leuchtmittel (z.B. den LEDs) der Beleuchtungseinrichtung angeordnet sind, werden als proximale Bereiche oder Abschnitte bezeichnet. Ebenso werden Bereiche oder Abschnitte von Bauteilen der Primäroptikanordnung, die entfernt von dem Leuchtmittel (z.B. den LEDs) der Beleuchtungseinrichtung angeordnet sind, als distale Bereiche oder Abschnitte bezeichnet.The terms proximal and distal are used in the context of the present description from the perspective of the illuminant. Regions or portions of components of the primary optic assembly that are located close to the illuminant (e.g., the LEDs) of the illuminator are referred to as proximal regions or portions. Likewise, portions or portions of components of the primary optic assembly that are located remotely from the light source (e.g., the LEDs) of the illumination device are referred to as distal regions or portions.

Die einzelnen Primäroptikelemente bilden Lichtleiter, welche Licht, das von dem Leuchtmittel ausgesandt wurde und über die Lichteintrittsflächen in die Lichtleiter eingekoppelt wurde, auf dem Weg durch den Lichtleiter bis zu der Lichtaustrittsfläche bündeln. Die Primäroptik ist aus einem formfesten, aber elastisch verformbaren transparenten Material gefertigt, bspw. einem Elastomer, insbesondere Silikon. Die Primäroptik mit den vielen elastischen Lichtleitern kann mithilfe der Halterung vor dem Leuchtmittel, insbesondere vor einer Vielzahl von matrixartig angeordneten LEDs, positioniert und fixiert werden.The individual primary optics elements form light guides, which bundle light which was emitted by the light source and was coupled into the light guides via the light entry surfaces on the way through the light guide to the light exit surface. The primary optic is made of a dimensionally stable, but elastically deformable transparent material, for example an elastomer, in particular silicone. The primary optics with the many elastic light guides can be positioned and fixed by means of the holder in front of the light source, in particular in front of a multiplicity of LEDs arranged in the manner of a matrix.

Die Primäroptikelemente sind im Bereich ihrer distalen Enden einstückig mit unmittelbar angrenzenden Primäroptikelementen ausgebildet. Das bedeutet, dass die einzelnen Lichtleiter im Bereich ihrer Lichtaustrittsflächen miteinander verbunden sind. Auf diese Weise erhält man eine einzige, einfach handhabbare Primäroptik aus dem formfesten, aber elastisch verformbaren Material (z.B. Silikon). Im Bereich der distalen Enden haben die Primäroptikelemente also eine gewisse Stabilität, da sie sich im Bereich ihrer Austrittsflächen aufgrund der einstückigen Ausgestaltung aneinander abstützen können.The primary optic elements are formed in the region of their distal ends in one piece with immediately adjacent primary optic elements. This means that the individual light guides are connected to each other in the area of their light exit surfaces. In this way one obtains a single, easy-to-handle primary optic made of the dimensionally stable, but elastically deformable material (eg silicone). In the region of the distal ends, therefore, the primary optic elements have a certain stability, since they can support one another in the region of their exit surfaces due to the one-piece design.

Selbstverständlich müssen die Primäroptikelemente auch im Bereich ihrer distalen Enden positioniert und fixiert werden; es ist aber nicht unbedingt erforderlich, dass jedes einzelne Primäroptikelement an seinem distalen Ende gesondert positioniert und fixiert wird. Vielmehr ist es ausreichend, wenn einige der Primäroptikelemente, vorzugsweise die äußeren Primäroptikelemente von mehreren matrixartig neben- und übereinander angeordneten Primäroptikelementen, im Bereich ihrer distalen Enden an dem Halteelement positioniert und fixiert werden. Die übrigen Primäroptikelemente werden dann durch die fixierten distalen Enden am Außenrand des Primäroptikarrays ebenfalls positioniert und fixiert.Of course, the primary optic elements must also be positioned and fixed in the region of their distal ends; However, it is not absolutely necessary that each individual primary optic element is separately positioned and fixed at its distal end. Rather, it is sufficient if some of the primary optic elements, preferably the outer primary optic elements of a plurality of matrix-like side by side and superimposed primary optic elements are positioned and fixed in the region of their distal ends on the holding element. The remaining primary optic elements are then also positioned and fixed by the fixed distal ends on the outer edge of the primary optic array.

Im Sinne der vorliegenden Erfindung umfasst die Halterung ein Spannfederelement, welches die Primäroptikelemente bei vollständig in die Halterung eingesetzten Primäroptikelementen relativ zu der Halterung fixiert. Das Spannfederelement besteht vorzugsweise aus Federstahl. Ein radial nach außen abstehender Rand des Primäroptikarrays ist zwischen einer Auflagefläche der Halterung und dem Spannfederelement eingespannt. Dabei ist es ausreichend, wenn das Spannfederelement den äußeren Rand auf zwei gegenüberliegenden Seiten des Primäroptikarrays einspannt. In einem fertig montierten Zustand der Primäroptikbaugruppe kann ein Kontaktfederelement des Spannfederelements eine elektrische Verbindung zwischen den Primäroptikelementen und dem Leuchtmittelträger zur Masseanbindung herstellen.For the purposes of the present invention, the holder comprises a tension spring element which fixes the primary optic elements with primary optic elements completely inserted into the holder relative to the holder. The tension spring element is preferably made of spring steel. A radially outwardly projecting edge of the primary optic array is clamped between a support surface of the holder and the tension spring element. It is sufficient if the tension spring element clamps the outer edge on two opposite sides of the primary optic array. In a fully assembled state of the primary optics assembly, a contact spring element of the tension spring element can produce an electrical connection between the primary optics elements and the illuminant carrier for ground connection.

Die proximalen Enden der länglichen Lichtleiter bedürfen einer hochpräzisen Positionierung und Fixierung bezüglich der Leuchtmittel. Zu diesem Zweck wird bei der erfindungsgemäßen Primäroptikbaugruppe die Halterung vorgesehen. Die Halterung ist ausgebildet, die proximalen Enden der Primäroptikelemente mit einer Genauigkeit im Bereich von etwa 0,06 mm hinsichtlich Versatz und Abstand der Lichteintrittsflächen der Primäroptikelemente bezüglich einer Lichtaustrittsfläche eines Leuchtmittels der Beleuchtungseinrichtung zu positionieren und zu befestigen.The proximal ends of the elongated optical fibers require a high-precision positioning and fixation with respect to the lamps. For this purpose, the holder is provided in the primary optic assembly according to the invention. The holder is designed to close the proximal ends of the primary optic elements with an accuracy of Range of about 0.06 mm in terms of offset and distance of the light entry surfaces of the primary optic elements with respect to a light exit surface of a light source of the lighting device to position and secure.

Weitere Merkmale und Vorteile der vorliegenden Erfindung werden nachfolgend anhand der Figuren näher erläutert. Es zeigen:

Figur 1
eine erfindungsgemäße Beleuchtungseinrichtung eines Kraftfahrzeugs gemäß einer bevorzugten Ausführungsform;
Figur 2
eine erfindungsgemäße Primäroptikbaugruppe in einer perspektivischen Ansicht;
Figur 3
die Primäroptikbaugruppe aus Figur 2 in einem Längsschnitt entlang einer Schnittebene III-III;
Figur 4
einen vergrößerten Ausschnitt der Primäroptikbaugruppe aus Figur 3; und
Figur 5
ein Primäroptikelement und ein entsprechendes Halteelement in einem Querschnitt entlang einer Schnittebene V-V im Bereich eines proximalen Endes des Primäroptikelements.
Further features and advantages of the present invention will be explained in more detail with reference to FIGS. Show it:
FIG. 1
a lighting device according to the invention of a motor vehicle according to a preferred embodiment;
FIG. 2
a primary optic assembly according to the invention in a perspective view;
FIG. 3
the primary optic assembly FIG. 2 in a longitudinal section along a sectional plane III-III;
FIG. 4
an enlarged section of the primary optic assembly from FIG. 3 ; and
FIG. 5
a primary optic element and a corresponding holding element in a cross section along a sectional plane VV in the region of a proximal end of the primary optic element.

Die hier beschriebenen Merkmale der vorliegenden Erfindung können auch einzeln oder in einer anderen Kombination miteinander als hier beschrieben und in den Figuren gezeigt erfindungswesentlich sein. Die vorliegende Erfindung ist nicht auf das hier beschriebene Ausführungsbeispiel beschränkt.The features of the present invention described here can also be essential to the invention individually or in a different combination with one another than described here and shown in the figures. The present invention is not limited to the embodiment described herein.

In Figur 1 ist eine erfindungsgemäße Beleuchtungseinrichtung eines Kraftfahrzeugs in ihrer Gesamtheit mit dem Bezugszeichen 1 bezeichnet. In diesem Beispiel ist die Beleuchtungseinrichtung 1 als ein Scheinwerfer ausgebildet; sie könnte aber auch als eine Kraftfahrzeugleuchte zur Anordnung vorne, hinten oder seitlich am Kraftfahrzeug ausgebildet sein. Der Scheinwerfer 1 weist ein Gehäuse 2 auf, das vorzugsweise aus Kunststoff gefertigt ist. In einer Lichtaustrittsrichtung 3 weist das Scheinwerfergehäuse 2 eine Lichtaustrittsöffnung 4 auf, die mittels einer transparenten Abdeckscheibe 5 verschlossen ist. Die Abdeckscheibe 5 besteht aus Glas oder Kunststoff. Auf der Abdeckscheibe 5 können zumindest bereichsweise optisch wirksame Profile (z. B. Prismen oder Zylinderlinsen) angeordnet sein, um das hindurchtretende Licht zu streuen (sogenannte Streuscheibe). Es ist aber auch denkbar, dass die Abdeckscheibe 5 ohne solche optisch wirksamen Elemente ausgebildet ist (sogenannte klare Scheibe).In FIG. 1 is an inventive Lighting device of a motor vehicle in its entirety by the reference numeral 1 denotes. In this example, the lighting device 1 is designed as a headlight; but it could also be designed as a motor vehicle light to the front, rear or side of the vehicle. The headlight 1 has a housing 2, which is preferably made of plastic. In a light exit direction 3, the headlight housing 2 has a light exit opening 4, which is closed by means of a transparent cover 5. The cover 5 is made of glass or plastic. Optically effective profiles (eg prisms or cylindrical lenses) can be arranged on the cover disk 5 at least in regions in order to scatter the light passing through (so-called diffusion disk). But it is also conceivable that the cover 5 is formed without such optically active elements (so-called clear disc).

Im Inneren des Scheinwerfergehäuses 2 ist ein Lichtmodul 6 angeordnet. Das Lichtmodul 6 kann zur Erzeugung einer beliebigen Scheinwerferfunktion oder eines Teils davon dienen. Insbesondere kann das Lichtmodul 6 zur Erzeugung einer Abblendlichtverteilung, einer Fernlichtverteilung, einer Nebellichtverteilung oder einer beliebigen adaptiven Lichtverteilung dienen. Ferner kann in dem Gehäuse 2 ein weiteres Lichtmodul 7 angeordnet sein. Dieses dient bspw. zur Erzeugung einer weiteren Scheinwerferfunktion. Es wäre aber auch denkbar, dass die Lichtmodule 6, 7 zusammen eine bestimmte Scheinwerferfunktion erzeugen. So könnte beispielsweise das Lichtmodul 7 eine Abblendlicht-Grundlichtverteilung mit einer relativ breiten Streuung und einer horizontalen Hell-Dunkel-Grenze erzeugen. Das Lichtmodul 6 könnte dann eine Abblendlicht-Spotlichtverteilung erzeugen, die im Vergleich zu der Abblendlicht-Grundlichtverteilung des Lichtmoduls 7 relativ stark konzentriert ist und an der Oberseite eine asymmetrische Hell-Dunkel-Grenze aufweist. Eine Überlagerung der Grundlichtverteilung und der Spotlichtverteilung ergibt eine herkömmliche Abblendlichtverteilung. Selbstverständlich ist es denkbar, dass in dem Scheinwerfergehäuse 2 außer den Lichtmodulen 6, 7 noch weitere Lichtmodule angeordnet sind. Außerdem kann in dem Scheinwerfergehäuse 2 lediglich ein Lichtmodul, beispielsweise das Lichtmodul 6 ohne das Lichtmodul 7, angeordnet sein.Inside the headlight housing 2, a light module 6 is arranged. The light module 6 can serve to generate any desired headlight function or a part thereof. In particular, the light module 6 can be used to produce a low beam distribution, a high beam distribution, a fog light distribution or any adaptive light distribution. Furthermore, a further light module 7 can be arranged in the housing 2. This serves, for example, to generate another headlight function. It would also be conceivable that the light modules 6, 7 together generate a specific headlight function. For example, the light module 7 could produce a low beam basic light distribution with a relatively wide spread and a horizontal cut-off. The light module 6 could then generate a low-beam spotlight distribution, which compared to the Low beam basic light distribution of the light module 7 is relatively concentrated and at the top has an asymmetric cut-off. A superposition of the basic light distribution and the spotlight distribution results in a conventional low-beam distribution. Of course, it is conceivable that in the headlight housing 2 in addition to the light modules 6, 7 further light modules are arranged. In addition, only one light module, for example the light module 6 without the light module 7, can be arranged in the spotlight housing 2.

Schließlich ist es möglich, dass in dem Gehäuse 2 auch eines oder mehrere Leuchtenmodule, wie das beispielhaft eingezeichnete Leuchtenmodul 8, angeordnet sind. Das Leuchtenmodul 8 dient zur Erzeugung einer beliebigen Leuchtenfunktion, beispielsweise eines Blinklichts, eines Positionslichts, eines Tagfahrlichts, etc.Finally, it is possible for one or more luminaire modules, such as the luminaire module 8 shown by way of example, to be arranged in the housing 2. The lighting module 8 is used to generate any lighting function, such as a flashing light, a position light, a daytime running light, etc.

Die Lichtmodule 6, 7 bzw. das Leuchtenmodul 8 weisen jeweils ein Leuchtmittel 100 (vgl. Figur 3) zum Aussenden von Licht auf. Das Leuchtmittel 100 kann bspw. mehrere Halbleiterlichtquellen (LEDs) 102 aufweisen, die matrixartig neben- und/oder übereinander angeordnet sind (sog. LED-Array). Es wäre aber auch denkbar, dass die Leuchtmittel 100 mindestens eine Halbleiterlichtquelle (LED) aufweist, die mehrere neben- und/oder übereinander angeordnete LED-Chips aufweist. Die LEDs 102 können auf einem gemeinsamen Leuchtmittelträger 104 angeordnet sein, der beispielsweise als eine Leiterplatte (sog. PCB) ausgebildet ist, welche die LEDs 102 sowohl mechanisch trägt als auch elektrisch kontaktiert. Der Leuchtmittelträger 104 kann auf einem Kühlkörper 106 montiert sein, um die während des Betriebs der LEDs 102 erzeugte Wärme an die Umgebung (z.B. in den Innenraum des Gehäuses 2 der Beleuchtungseinrichtung 1) abzugeben.The light modules 6, 7 and the lighting module 8 each have a lighting means 100 (see. FIG. 3 ) to emit light. The luminous means 100 may, for example, have a plurality of semiconductor light sources (LEDs) 102, which are arranged next to and / or above one another like a matrix (so-called LED array). However, it would also be conceivable for the lighting means 100 to have at least one semiconductor light source (LED) which has a plurality of adjacent and / or superimposed LED chips. The LEDs 102 can be arranged on a common illuminant carrier 104, which is designed, for example, as a printed circuit board (so-called PCB), which carries the LEDs 102 both mechanically and also in electrical contact. The illuminant carrier 104 may be mounted on a heat sink 106 in order to heat the heat generated during the operation of the LEDs 102 to the environment (eg into the interior of the Housing 2 of the lighting device 1) leave.

Ferner können die Lichtmodule 6, 7 bzw. das Leuchtenmodul 8 eine erfindungsgemäße Primäroptikbaugruppe 10 aufweisen, wie sie beispielhaft in den Figuren 2 und 3 gezeigt und nachfolgend beschrieben ist, um zumindest einen Teil des von dem Leuchtmittel 100 ausgesandten Lichts zu bündeln und in gewünschter Weise zu formen. Das von der Primäroptikbaugruppe 10 gebündelte und geformte Lichtbündel kann unmittelbar zur Erzeugung einer gewünschten Lichtverteilung der Beleuchtungseinrichtung 1 genutzt werden. Das Lichtbündel würde lediglich durch die Abdeckscheibe 5 treten und - sofern vorhanden - von den darauf angeordneten optisch wirksamen Profilen gestreut werden. Es ist aber auch denkbar, dass das von der Primäroptikbaugruppe gebündelte und geformte Lichtbündel zunächst durch eine Sekundäroptik hindurchtritt, die bspw. als eine Sammellinse oder als ein Reflektor ausgebildet ist, um das Lichtbündel zur Erzeugung einer gewünschten Lichtverteilung der Beleuchtungseinrichtung 1 auf die Fahrbahn vor das Kraftfahrzeug zu projizieren.Furthermore, the light modules 6, 7 or the luminaire module 8 can have a primary optics module 10 according to the invention, as shown by way of example in FIGS Figures 2 and 3 is shown and described below in order to bundle at least a portion of the light emitted by the light emitting means 100 and to form as desired. The light bundle bundled and shaped by the primary optics module 10 can be used directly to generate a desired light distribution of the illumination device 1. The light beam would only pass through the cover plate 5 and - if present - are scattered by the optically active profiles arranged thereon. However, it is also conceivable that the light bundle bundled and shaped by the primary optics assembly initially passes through a secondary optic, which is designed, for example, as a converging lens or as a reflector, in order to project the light bundle to generate a desired light distribution of the illumination device 1 on the roadway in front of it To project motor vehicle.

Die Primäroptikbaugruppe 10 ist in Figur 3 in ihrer Gesamtheit und in Figur 4 im Ausschnitt gezeigt. Sie umfasst mehrere nebeneinander und/oder übereinander angeordnete Primäroptikelemente 12, die jeweils eine Lichteintrittsfläche 14 an einem proximalen Ende 13 eines Primäroptikelements 12 und eine Lichtaustrittsfläche 16 an einem distalen Ende 15 des Primäroptikelements 12 und einen von dem proximalen Ende zu dem distalen Ende hin zunehmenden Querschnitt aufweisen. Die Primäroptikelemente 12 weisen eine Längserstreckung (Abstand zwischen der Eintrittsfläche 14 und der Austrittsfläche 16) auf, der deutlich größer als ein beliebiger Querschnitt der Primäroptikelemente 12 entlang der Längserstreckung ist.The primary optic assembly 10 is in FIG. 3 in their entirety and in FIG. 4 shown in the clipping. It comprises a plurality of primary optic elements 12 arranged side by side and / or one above the other, each having a light entry surface 14 at a proximal end 13 of a primary optic element 12 and a light exit surface 16 at a distal end 15 of the primary optic element 12 and a cross section increasing from the proximal end to the distal end exhibit. The primary optic elements 12 have a longitudinal extension (distance between the entry surface 14 and the exit surface 16) which is significantly larger than any cross section of the primary optic elements 12 along the longitudinal extent.

Die Primäroptikelemente 12 sind aus einem formfesten, aber elastisch verformbaren transparenten Material, bspw. einem Elastomer, insbesondere Silikon, gefertigt und mittels einer Halterung 20 an dem Leuchtmittel 100 oder dem Leuchtmittelträger 104 der Beleuchtungseinrichtung 1 positioniert und befestigt. Die Halterung 20 weist Halteelemente 22 zur hochgenauen Positionierung der Primäroptikelemente 12 im Bereich ihrer proximalen Enden 13 auf.The primary optic elements 12 are made of a dimensionally stable, but elastically deformable transparent material, for example an elastomer, in particular silicone, and are positioned and fastened by means of a holder 20 to the luminous means 100 or the illuminant carrier 104 of the illuminating device 1. The holder 20 has holding elements 22 for the highly accurate positioning of the primary optic elements 12 in the region of their proximal ends 13.

Die Primäroptikelemente 12 sind vorzugsweise im Bereich ihrer distalen Enden 15 einstückig mit unmittelbar angrenzenden Primäroptikelementen 12 ausgebildet, so dass die Lichtaustrittsflächen 16 der einzelnen Primäroptikelemente unmittelbar aneinander grenzen und ineinander übergehen. Die einzelnen Austrittsflächen 16 sind somit durch Knicke zueinander abgegrenzt. Selbstverständlich wäre es auch denkbar, dass die Austrittsflächen 16 der einzelnen Primäroptikelemente 12 einfach nur mit bloßem Auge nicht unterscheidbare funktionale Flächenelemente einer einzigen gemeinsamen Lichtaustrittsfläche aller Primäroptikelemente 12 und nicht durch Knicke zueinander abgegrenzt sind.The primary optic elements 12 are preferably formed in the region of their distal ends 15 in one piece with directly adjacent primary optic elements 12, so that the light exit surfaces 16 of the individual primary optic elements directly adjoin one another and merge into one another. The individual exit surfaces 16 are thus delimited by kinks to each other. Of course, it would also be conceivable that the exit surfaces 16 of the individual primary optic elements 12 are simply delimited only with the naked eye indistinguishable functional surface elements of a single common light exit surface of all primary optic elements 12 and not by kinks to each other.

Die Halteelemente 22 sind zur Aufnahme und Positionierung der proximalen Enden 13 der einzelnen Primäroptikelemente 12 ausgebildet. Sie weisen jeweils einen Aufnahme- und Führungsbereich für eines der Primäroptikelemente 12 auf. Der Aufnahme- und Führungsbereich hat eine Längserstreckung, die im Wesentlichen parallel zu der Längserstreckung der Primäroptikelemente 12 verläuft. Die Aufnahme- und Führungsbereiche der Halteelemente 22 weisen seitliche Führungsflächen 24 auf, die sich von einem proximalen Abschnitt 23 der Halteelemente 22 zu einem distalen Abschnitt 25 der Halteelemente 22 erstrecken. Ein Abstand zwischen gegenüberliegenden Führungsflächen 24 eines Halteelements 22 nimmt von dem proximalen Abschnitt 23 zu dem distalen Abschnitt 25 zu.The holding elements 22 are designed to receive and position the proximal ends 13 of the individual primary optic elements 12. They each have a receiving and guiding area for one of the primary optics elements 12. The receiving and guiding region has a longitudinal extent which runs essentially parallel to the longitudinal extent of the primary optic elements 12. The receiving and guiding regions of the holding elements 22 have lateral guide surfaces 24, which extend from a proximal portion 23 of the holding elements 22 to a distal portion 25 of the holding elements 22. One Distance between opposing guide surfaces 24 of a holding member 22 increases from the proximal portion 23 to the distal portion 25.

Der Abstand zwischen gegenüberliegenden Führungsflächen 24 in den distalen Abschnitten 25 der Halteelemente 22 entspricht einem Querschnitt einer Einführöffnung 26 der Halteelemente 22 für die Primäroptikelemente 12. Der Abstand zwischen gegenüberliegenden Führungsflächen 24 in den proximalen Abschnitten 23 der Halteelemente 22 entspricht einem Querschnitt einer Positionieröffnung 28 der Halteelemente 22 für die Primäroptikelemente 12. Die Führungsflächen 24 der Halteelemente 22 der Halterung 20 sind derart ausgebildet, dass beim Einsetzen der Primäroptikelemente 12 in die Halterung 20 über die distalen Abschnitte 25 der Halteelemente 22 die proximalen Enden 13 der Primäroptikelemente 12 an den Führungsflächen 24 entlanggleiten und die Führungsflächen 24 die proximalen Enden 13 der Primäroptikelemente 12 in die proximalen Abschnitte 23 der Halteelemente 22 führen.The distance between opposing guide surfaces 24 in the distal sections 25 of the holding elements 22 corresponds to a cross section of an insertion opening 26 of the holding elements 22 for the primary optic elements 12. The distance between opposing guide surfaces 24 in the proximal portions 23 of the holding elements 22 corresponds to a cross section of a positioning opening 28 of the holding elements 22 for the primary optic elements 12. The guide surfaces 24 of the holding elements 22 of the holder 20 are designed such that upon insertion of the primary optic 12 in the holder 20 via the distal portions 25 of the holding elements 22, the proximal ends 13 of the primary optic elements 12 slide along the guide surfaces 24 and the guide surfaces 24 guide the proximal ends 13 of the primary optic elements 12 into the proximal portions 23 of the holding elements 22.

Anhand der Figur 5 kann man deutlich erkennen, dass die Halteelemente 22 und die Primäroptikelemente 12 zumindest in einem gemeinsamen Querschnitt im Bereich eines proximalen Abschnitts 23 der Halteelemente 22 und des proximalen Endes 13 der Primäroptikelemente 12 betrachtet, insbesondere in einem Querschnitt im Bereich der Positionierungsöffnungen 28 betrachtet, jeweils unterschiedlich geformte Querschnitte. In dem dargestellten Beispiel haben die Positionieröffnungen 28 einen kreisförmigen oder ovalen Querschnitt ohne jegliche Knicke oder Kanten. Demgegenüber haben die Primäroptikelemente 12 in dem dargestellten Querschnitt die Form eines Polygons mit mehreren Ecken 31, in diesem Fall eines Oktagons mit acht Ecken. Selbstverständlich kann das Polygon auch als ein beliebig anderes Vieleck ausgebildet sein. Das Polygon ist vorzugsweise nicht überschlagen, muss nicht gleichseitig, gleichwinklig und/oder regelmäßig ausgebildet sein. Wichtig ist, dass die Außenumfangsfläche der Primäroptikelemente 12 im Querschnitt mehrere Ecken aufweist, die so über den Außenumfang verteilt sind, dass das Primäroptikelement 12 punktuell auf den Führungsflächen 24 aufliegt und in dem Haltelement 22 gehalten ist. Im Bereich der proximalen Enden 13 der Primäroptikelemente 12 liegt deren Außenfläche lediglich mit den Ecken 31 an den Innenumfangs- oder Führungsflächen 24 der Halteelemente 22 an, so dass sich im Querschnitt eine punktförmige Auflage ergibt. Es ist denkbar, dass die Ecken 31 in mehreren unterschiedlichen Querschnittsebenen an den Führungsflächen 24 der Halteelemente 22 anliegen, so dass sich über die verschiedenen Querschnitte hinweg entlang der Längserstreckung der Primäroptikelemente 12 mehrere Berührungslinien umfassend die Ecken oder Berührungspunkte 31 ergeben, wobei die Berührungslinien entlang der Längserstreckung der Primäroptikelemente 12 verlaufen.Based on FIG. 5 It can be clearly seen that the holding elements 22 and the primary optic elements 12 viewed at least in a common cross section in the region of a proximal portion 23 of the holding elements 22 and the proximal end 13 of the primary optic elements 12, in particular in a cross section in the region of the positioning openings 28, each different shaped cross sections. In the illustrated example, the positioning apertures 28 have a circular or oval cross-section without any kinks or edges. In contrast, the primary optic elements 12 in the illustrated cross-section have the shape of a polygon having a plurality of corners 31, in this case an octagon having eight corners. Of course, the polygon can also be called be formed any other polygon. The polygon is preferably not rolled over, need not be equilateral, equiangular and / or regularly formed. It is important that the outer peripheral surface of the primary optic 12 has in cross section a plurality of corners which are distributed over the outer periphery, that the primary optic 12 rests selectively on the guide surfaces 24 and is held in the holding element 22. In the region of the proximal ends 13 of the primary optic elements 12, the outer surface of which lies only with the corners 31 on the inner peripheral or guide surfaces 24 of the holding elements 22, so that a punctiform overlay results in the cross section. It is conceivable for the corners 31 to abut the guide surfaces 24 of the holding elements 22 in a plurality of different cross-sectional planes, so that over the various cross-sections along the longitudinal extension of the primary optics elements 12 a plurality of lines of contact comprising the corners or contact points 31 result Longitudinal extent of the primary optic 12 extend.

Die Halterung 20 weist ein Spannfederelement 30 auf, welches die Primäroptikelemente 12 bei vollständig in die Halterung 20 eingesetzten Primäroptikelementen 12 relativ zu der Halterung 20 fixiert. Wenn die Primäroptikelemente 12 im Bereich ihrer distalen Enden 15 einstückig mit unmittelbar angrenzenden Primäroptikelementen 12 ausgebildet sind, können die äußeren Primäroptikelemente 12 im Bereich ihrer distalen Enden 15 radial nach außen abstehende Randabschnitte 17 aufweisen. Die Halterung 20 weist eine außen um die Halteelemente 22 umlaufende Auflagefläche 21 für die Randabschnitte 17 der vollständig in die Halterung 20 eingesetzten Primäroptikelemente 12 auf. Die Randabschnitte 17 sind zwischen dem Spannfederelement 30 und der Auflagefläche 21 eingespannt.The holder 20 has a tension spring element 30 which fixes the primary optic elements 12 relative to the holder 20 when the primary optic elements 12 are inserted completely into the holder 20. If the primary optic elements 12 are formed in the region of their distal ends 15 in one piece with directly adjacent primary optic elements 12, the outer primary optic elements 12 can have radially outwardly projecting edge sections 17 in the region of their distal ends 15. The holder 20 has an outer peripheral to the holding elements 22 supporting surface 21 for the edge portions 17 of the fully inserted into the holder 20 primary optics 12. The edge portions 17 are clamped between the tension spring element 30 and the support surface 21.

Dabei ragen an gegenüberliegenden Seiten der Halterung 20 zwei bügelförmige Spannelemente 32 hinaus und sind hinter im Querschnitt keilförmigen Spannelementen 27 eingerastet, die außen an zwei gegenüberliegenden Seiten der Halterung 20 ausgebildet sind.In this case, protrude on opposite sides of the holder 20 two bow-shaped clamping elements 32 and are engaged behind in cross-section wedge-shaped clamping elements 27, which are externally formed on two opposite sides of the holder 20.

Das Spannfederelement 30 ist aus einem elektrisch leitfähigen Material, insbesondere aus Stahl, gefertigt und dient zur Masseanbindung der gesamten Primäroptikbaugruppe 10. Insbesondere stellt das Spannfederelement 30 in einem fertig montierten Zustand der Primäroptikbaugruppe 10 über mindestens ein Kontaktfederelement 33 eine elektrische Verbindung zwischen den Primäroptikelementen 12 und einem Leuchtmittelträger 104 her. Die Kontaktfederelemente 33 stellen die Masseverbindung vorzugsweise über die Seite des Leuchtmittelträgers 104 her, auf der die Lichtquellen 102 montiert sind. Ferner reicht ein einziges Kontaktfederelement 33 aus. Der Leuchtmittelträger 104 ist bspw. als eine Leiterplatte ausgebildet, auf der die Halbleiterlichtquellen 102 befestigt und elektrisch kontaktiert sind. Das Kontaktfederelement 33 ist vorzugsweise einteilig mit dem Spannfederelement 30 ausgebildet. Zur Massenanbindung der Primäroptikbaugruppe 10 an den Leuchtmittelträger 104 oder an ein damit in elektrischer Verbindung stehendes Bauteil (z.B. einen Kühlkörper) kann das Spannfederelement 30 jedoch auch über separate Bügel oder Zungen verfügen, welchen den elektrischen Kontakt zu dem Leuchtmittelträger 104 oder dem damit in elektrischer Verbindung stehenden Bauteil herstellen.The tension spring element 30 is made of an electrically conductive material, in particular of steel, and serves for ground connection of the entire primary optics assembly 10. In particular, the tension spring element 30 in an assembled state of the primary optics assembly 10 via at least one contact spring element 33 an electrical connection between the primary optics 12 and a light source carrier 104 ago. The contact spring elements 33 preferably provide the ground connection via the side of the illuminant carrier 104 on which the light sources 102 are mounted. Furthermore, a single contact spring element 33 is sufficient. The light source carrier 104 is formed, for example, as a printed circuit board on which the semiconductor light sources 102 are fixed and electrically contacted. The contact spring element 33 is preferably formed integrally with the tension spring element 30. However, for the mass connection of the primary optics module 10 to the illuminant carrier 104 or to a component (eg a heat sink) that is in electrical connection with it, the tension spring element 30 can also have separate stirrups or tongues, which provide electrical contact to the illuminant carrier 104 or the electrical connection therewith produce standing component.

Die Halterung 20 weist im Bereich der Schnittstelle zu den Primäroptikelementen 12 bzw. dem Randbereich 17 eine definierte Vorwölbung (Vertiefung 21a mit einer größeren Erstreckung als der aufzunehmende Randbereich 17) auf, um die im Betrieb entstehenden Temperaturausdehnungseffekte kompensieren zu können. Die Halterung 20 weist stiftförmige Elemente 29 auf, die außen an der Halterung 20, vorzugsweise außen an zwei gegenüberliegenden Seiten der Halterung 20, ausgebildet sind. Die Elemente 29 sind vorzugsweise Pins, die zur Befestigung der gesamten Primäroptikbaugruppe 10 an dem restlichen Lichtmodul 6, 7, bspw. über den Leuchtmittelträger 104, mittels Kleben dienen. Alternativ oder zusätzlich können die stiftförmigen Elemente 29 auch Abstandselemente darstellten, welche die gesamte Primäroptikbaugruppe 10 bei der Montage an dem Leuchtmittelträger 104 der Beleuchtungseinrichtung 1 in einem definierten Abstand zu dem Leuchtmittel 100 halten. Spezielle Aufnahmegeometrien und Positionierbohrungen 29a an der Halterung 20 ermöglichen es, die gesamte Baugruppe 10 mit Hilfe eines Montageroboters aufzunehmen und vollautomatisch zu positionieren.In the region of the interface to the primary optical elements 12 or the edge region 17, the holder 20 has a defined protrusion (recess 21a with a larger extent than the peripheral area 17 to be accommodated) be able to compensate for the temperature expansion effects arising during operation. The holder 20 has pin-shaped elements 29 which are formed on the outside of the holder 20, preferably on the outside on two opposite sides of the holder 20. The elements 29 are preferably pins which serve to attach the entire primary optics module 10 to the remaining light module 6, 7, for example via the illuminant carrier 104, by means of gluing. Alternatively or additionally, the pin-shaped elements 29 may also represent spacer elements which hold the entire primary optics assembly 10 at the assembly to the illuminant carrier 104 of the illumination device 1 at a defined distance from the illuminant 100. Special receiving geometries and positioning holes 29a on the holder 20 make it possible to pick up the entire assembly 10 with the aid of a mounting robot and to position it fully automatically.

Die Halterung 20 ist vorzugsweise aus einem Metall, insbesondere aus Aluminium, gefertigt. Sie wird in einem Thixomolding-Verfahren (sog. Semi-Solid Metal Casting (SSM)) hergestellt. Dabei handelt es sich um ein Umformverfahren in der Metallverarbeitung, das die Vorteile des Gießens und Schmiedens vereint. Das zu verarbeitende Metall wird bis zur Übergangstemperatur zwischen fest und flüssig erhitzt. An dieser Schwelle ist der thixotrope Zustand erreicht. Im thixotropen Zustand verringert sich die Viskosität des Materials. Das knetmasseartige Metall lässt sich so mit geringen Drücken sehr präzise in Formen pressen.The holder 20 is preferably made of a metal, in particular of aluminum. It is produced in a thixomolding process (so-called semi-solid metal casting (SSM)). It is a metal forming process that combines the benefits of casting and forging. The metal to be processed is heated to the transition temperature between solid and liquid. At this threshold, the thixotropic state is reached. In the thixotropic state, the viscosity of the material decreases. The plasticine-like metal can be very precisely pressed into molds with low pressures.

Das Leuchtmittel 100 ist - wie gesagt - vorzugsweise als eine LED-Matrix ausgebildet. Die LED-Matrix 100 weist mehrere matrixartig neben- und übereinander angeordnete LED-Chips 102 auf. Die Primäroptik weist mehrere matrixartig neben- und übereinander angeordnete Primäroptikelemente 12 auf. In dem dargestellten Ausführungsbeispiel ist jedem LED-Chip 102 ein eigenes Primäroptikelement 12 zugeordnet. Das von den LEDs 102 ausgesandte Licht wird größtenteils über die Lichteintrittsfläche 14 in die Primäroptikelemente 12 einkoppelt.The luminous means 100 is - as stated - preferably formed as an LED matrix. The LED matrix 100 has a plurality of LED chips 102 arranged side by side and one above the other like a matrix. The primary optic has several matrix-like juxtaposed and superimposed primary optic elements 12. In the illustrated embodiment, each LED chip 102 is assigned its own primary optics element 12. The light emitted by the LEDs 102 is largely coupled via the light entry surface 14 into the primary optics elements 12.

Scheinwerfer 1 mit solchen Leuchtmitteln 100 in Form einer LED-Matrix und mit den matrixartig angeordneten Primäroptikelementen 12 werden auch als Matrix-Scheinwerfer bezeichnet, da sie eine resultierende Lichtverteilung mit mehreren neben- und/oder übereinander angeordneten pixel- oder streifenförmigen Teillichtverteilungen erzeugen. Die einzelnen Teillichtverteilungen, die von dem Licht einer LED 102 und dem zugehörigen Primäroptikelement 12 erzeugt werden, werden auch als Pixel bezeichnet. Die resultierende Lichtverteilung wird eine Vielzahl von neben- und übereinander angeordneten Pixeln aufweisen. Insbesondere sind die Pixel in dem dargestellten Ausführungsbeispiel in drei Reihen sowie in einer Vielzahl von Spalten angeordnet. Jedes Pixel der Lichtverteilung wird durch einen LED-Chip 102 im Zusammenwirken mit dem zugeordneten Primäroptikelement 12 und - sofern vorhanden - nach Projektion durch eine Sekundäroptik erzeugt.Headlamp 1 with such bulbs 100 in the form of an LED matrix and with the matrix-like arranged primary optics 12 are also referred to as matrix headlights, since they produce a resulting light distribution with a plurality of side by side and / or superimposed pixel or strip-shaped partial light distributions. The individual partial light distributions, which are generated by the light of an LED 102 and the associated primary optics element 12, are also referred to as pixels. The resulting light distribution will have a multiplicity of pixels arranged next to and above one another. In particular, in the illustrated embodiment, the pixels are arranged in three rows as well as in a plurality of columns. Each pixel of the light distribution is generated by an LED chip 102 in cooperation with the associated primary optics element 12 and, if present, after projection by a secondary optics.

Durch ein gezieltes Ansteuern der einzelnen LED-Chips 102 der LED-Matrix 100 ist es möglich, die resultierende Lichtverteilung nahezu beliebig zu variieren. So ist es beispielsweise denkbar, diejenigen LED-Chips 102 vorübergehend auszuschalten, in deren Pixel-Bereich der Lichtverteilung andere Verkehrsteilnehmer detektiert worden sind, bspw. mittels einer Kamera im Kraftfahrzeug, die das Sichtfeld des Fahrers vor dem Kraftfahrzeug erfasst, und eines geeigneten Rechengeräts zum Auswerten der Kamerabilder zum Zweck der Detektion von anderen Verkehrsteilnehmern vor dem Fahrzeug. Auf diese Weise kann kontinuierlich mit Fernlicht gefahren werden, wobei eine Blendung anderer Verkehrsteilnehmer durch die lokal aus der Lichtverteilung herausgenommenen Pixel verhindert wird (sogenanntes Teilfernlicht). Ferner wäre es denkbar, auf einer Fahrbahn vor dem Kraftfahrzeug detektierte Objekte durch gezieltes Einschalten einzelner LED-Chips 102 zur Erzeugung eines oder mehrerer Pixel oberhalb der Hell-Dunkel-Grenze einer Abblendlichtverteilung einzuschalten, damit die vor der Fahrbahn detektierten Objekte gezielt angestrahlt werden können (sog. Markierungslicht oder Markerlight). Auch beliebig andere adaptive Lichtverteilungen können durch gezieltes Ein-/Ausschalten und/oder Dimmen der LEDs 102 erzielt werden.By selectively controlling the individual LED chips 102 of the LED matrix 100, it is possible to vary the resulting light distribution almost as desired. Thus, it is conceivable, for example, to temporarily switch off those LED chips 102 in whose pixel area of the light distribution other road users have been detected, for example by means of a camera in the motor vehicle which detects the driver's field of vision in front of the motor vehicle, and a suitable computing device for Evaluate the Camera images for the purpose of detecting other road users in front of the vehicle. In this way, can be driven continuously with high beam, with a dazzling of other road users by the locally removed from the light distribution pixels is prevented (so-called Teilfernlicht). Furthermore, it would be conceivable to turn on objects detected on a roadway in front of the motor vehicle by selectively switching on individual LED chips 102 to generate one or more pixels above the cut-off line of a low-beam light distribution, so that the objects detected in front of the roadway can be specifically illuminated ( so-called marker light or marker light). Any other adaptive light distributions can also be achieved by targeted switching on / off and / or dimming of the LEDs 102.

Claims (13)

Primäroptikbaugruppe (10) zum Einsatz in einer Beleuchtungseinrichtung (1) eines Kraftfahrzeugs, die Primäroptikbaugruppe (10) umfassend mehrere matrixartig nebeneinander und/oder übereinander angeordnete Primäroptikelemente (12), die jeweils eine Lichteintrittsfläche (14) an einem proximalen Ende (13) eines Primäroptikelements (12) und eine Lichtaustrittsfläche (16) an einem distalen Ende (15) des Primäroptikelements (12) und einen von dem proximalen Ende (13) zu dem distalen Ende (15) hin zunehmenden Querschnitt aufweisen, wobei entlang einer Längserstreckung der Primäroptikelemente (12) der Querschnitt kleiner als ein Abstand zwischen der Eintrittsfläche (14) und der Austrittsfläche (16) ist, wobei die Primäroptikelemente (12) aus einem formfesten, aber elastisch verformbaren, transparenten Material gefertigt und mittels einer Halterung (20) an einem Leuchtmittel (100) oder einem Leuchtmittelträger (104) der Beleuchtungseinrichtung (1) positioniert und befestigt sind, wobei die Halterung (20) Halteelemente (22) zur Positionierung der Primäroptikelemente (12) im Bereich ihrer proximalen Enden (13) aufweist, dadurch gekennzeichnet, dass die Halterung (20) ein Spannfederelement (30) aufweist, welches die Primäroptikelemente (12) bei vollständig in die Halterung (20) eingesetzten Primäroptikelementen (12) relativ zu der Halterung (20) fixiert, und dass die Primäroptikelemente (12) im Bereich ihrer distalen Enden (15) einstückig mit unmittelbar angrenzenden Primäroptikelementen (12) ausgebildet sind, dass die äußeren Primäroptikelemente (12) im Bereich ihrer distalen Enden (15) radial nach außen abstehende Randabschnitte (17) aufweisen, dass die Halterung (20) eine umlaufende Auflagefläche (21) für die Randabschnitte (17) der vollständig in die Halterung (20) eingesetzten Primäroptikelemente (12) aufweist und die Randabschnitte (17) zwischen dem Spannfederelement (30) und der Auflagefläche (21) eingespannt sind.The primary optics assembly (10) for use in a lighting device (1) of a motor vehicle, the primary optics assembly (10) comprising a plurality of primary cells (12) arranged side by side and / or one above the other like a matrix, each having a light entry surface (14) at a proximal end (13) of a primary optic element (12) and a light exit surface (16) at a distal end (15) of the primary optic element (12) and from the proximal end (13) to the distal end (15) towards increasing cross-section, wherein along a longitudinal extension of the primary optic elements (12 ) the cross-section is smaller than a distance between the entrance surface (14) and the exit surface (16), wherein the primary optic elements (12) are made of a dimensionally stable, but elastically deformable, transparent material and by means of a holder (20) on a lighting means (100 ) or a light source carrier (104) of the lighting device (1) are positioned and fastened, the holder (20) having holding elements (22) for positioning the primary optic elements (12) in the region of their proximal ends (13), characterized in that the holder (20) has a tension spring element (30) which fixes the primary optics elements (12) with primary optic elements (12) inserted completely into the holder (20) relative to the holder (20), and that the primary optics elements (12 ) are integrally formed in the region of their distal ends (15) with directly adjacent primary optic elements (12) such that the outer primary optic elements (12) have radially outwardly projecting edge sections (17) in the region of their distal ends (15) ) has a peripheral bearing surface (21) for the edge portions (17) of the primary optics elements (12) completely inserted into the holder (20) and the edge portions (17) between the tension spring element (30) and the support surface (21) are clamped. Primäroptikbaugruppe (10) nach Anspruch 1, dadurch gekennzeichnet, dass die Primäroptikelemente (12) aus Silikon gefertigt sind.Primary optics assembly (10) according to claim 1, characterized in that the primary optic elements (12) are made of silicone. Primäroptikbaugruppe (10) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Halterung (20) mehrere Halteelemente (22) aufweist, die jeweils zur Aufnahme und Positionierung der proximalen Enden (13) eines einzelnen Primäroptikelements (12) ausgebildet sind.Primary optics assembly (10) according to claim 1 or 2, characterized in that the holder (20) has a plurality of holding elements (22) which are each designed to receive and position the proximal ends (13) of a single primary optic element (12). Primäroptikbaugruppe (10) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Halteelemente (22) und die Primäroptikelemente (12) zumindest in einem gemeinsamen Querschnitt im Bereich eines proximalen Abschnitts (23) der Halteelemente (22) und des proximalen Endes (13) der Primäroptikelemente (12) betrachtet jeweils unterschiedlich geformte Querschnitte aufweisen.Primary optics assembly (10) according to one of claims 1 to 3, characterized in that the holding elements (22) and the primary optic elements (12) at least in a common cross section in the region of a proximal portion (23) of the holding elements (22) and the proximal end ( 13) of the primary optic elements (12) considered each have different shaped cross-sections. Primäroptikbaugruppe (10) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Aufnahme- und Führungsbereiche der Halteelemente (22) seitliche Führungsflächen (24) aufweisen, die sich von einem proximalen Abschnitt (23) der Halteelemente (22) zu einem distalen Abschnitt (25) der Halteelemente (22) erstrecken, wobei ein Abstand zwischen gegenüberliegenden Führungsflächen (24) eines Halteelements (22) von dem proximalen Abschnitt (23) zu dem distalen Abschnitt (25) zunimmt, wobei ein Abstand zwischen gegenüberliegenden Führungsflächen (24) in dem proximalen Abschnitt (23) der Halteelemente (22) einem Querschnitt einer Positionieröffnung (28) der Halteelemente (22) für die Primäroptikelemente (12) entspricht und wobei die Halteelemente (22) und die Primäroptikelemente (12) zumindest in einem gemeinsamen Querschnitt im Bereich der Positionierungsöffnungen (28) betrachtet jeweils unterschiedlich geformte Querschnitte aufweisen.The primary optics assembly (10) according to any one of claims 1 to 4, characterized in that the receiving and guiding portions of the holding members (22) have lateral guide surfaces (24) extending from a proximal portion (23) of the holding members (22) to a distal one Section (25) of the holding elements (22) extend, wherein a distance between opposite guide surfaces (24) of a holding element (22) from the proximal portion (23) to the distal portion (25) increases, wherein a distance between opposite guide surfaces (24) in the proximal section (23) of the holding elements (22) corresponds to a cross section of a positioning opening (28) of the holding elements (22) for the primary optic elements (12) and wherein the holding elements (22) and the primary optic elements (12) at least in a common cross section in Seen in the region of the positioning openings (28) each have differently shaped cross-sections. Primäroptikbaugruppe (10) nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Primäroptikelemente (12) in einem gemeinsamen Querschnitt im Bereich eines proximalen Abschnitts (23) der Halteelemente (22) und des proximalen Endes (13) der Primäroptikelemente (12) betrachtet die Form eines Polygons mit mehreren Ecken aufweisen.The primary optic assembly (10) according to claim 4 or 5, characterized in that the primary optic elements (12) in a common cross section in the region of a proximal portion (23) of the holding elements (22) and the proximal end (13) of the primary optic elements (12) considered the Have a polygon shape with multiple corners. Primäroptikbaugruppe (10) nach Anspruch 6, dadurch gekennzeichnet, dass die proximalen Enden (13) der Primäroptikelemente (12) bei vollständig in die Halterung (20) eingesetzten Primäroptikelementen (12) in einem gemeinsamen Querschnitt im Bereich der Positionierungsöffnungen (28) der Halteelemente (22) betrachtet die Führungsflächen (24) der Halteelemente (22) lediglich mit ihren Ecken berühren.The primary optics assembly (10) according to claim 6, characterized in that the proximal ends (13) of the primary optic elements (12) are inserted into the primary optic elements (12) fully inserted into the holder (20). viewed in a common cross section in the region of the positioning openings (28) of the holding elements (22), the guide surfaces (24) of the holding elements (22) touch only with their corners. Primäroptikbaugruppe (10) nach Anspruch 7, dadurch gekennzeichnet, dass die proximalen Enden (13) der Primäroptikelemente (12) bei vollständig in die Halterung (20) eingesetzten Primäroptikelementen (12) in mehreren unterschiedlichen gemeinsamen Querschnitten im Bereich eines proximalen Abschnitts (23) der Halteelemente (22) und des proximalen Endes (13) der Primäroptikelemente (12) betrachtet die Führungsflächen (24) der Halteelemente (22) lediglich mit ihren Ecken berühren, so dass sich zwischen den Primäroptikelementen (12) und den Führungsflächen (24) der Halteelemente (22) Berührungslinien ergeben, die im Wesentlichen längs der Längserstreckung der Primäroptikelemente (12) verlaufen.The primary optic assembly (10) according to claim 7, characterized in that the proximal ends (13) of the primary optic elements (12) are inserted in a plurality of different common cross sections in the region of a proximal portion (23) of the primary optic elements (12) completely inserted into the holder (20) Holding elements (22) and the proximal end (13) of the primary optic elements (12) considered the guide surfaces (24) of the holding elements (22) only with their corners touching, so that between the primary optic elements (12) and the guide surfaces (24) of the holding elements (22) result in contact lines extending substantially along the longitudinal extent of the primary optic elements (12). Primäroptikbaugruppe (10) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Spannfederelement (30) aus einem elektrisch leitfähigen Material, insbesondere aus Stahl, gefertigt ist und zur Masseanbindung der gesamten Primäroptikbaugruppe (10) dient.Primary optics assembly (10) according to any one of claims 1 to 8, characterized in that the tension spring element (30) made of an electrically conductive material, in particular made of steel, and is used for ground connection of the entire primary optics assembly (10). Primäroptikbaugruppe (10) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Halterung (20) seitlich angeordnete stiftförmige Elemente (29) aufweist, die zur Befestigung der gesamten Primäroptikbaugruppe (10) an dem Leuchtmittel (100) oder an dem Leuchtmittelträger (104) der Beleuchtungseinrichtung (1) dienen.The primary optics assembly (10) according to any one of claims 1 to 9, characterized in that the holder (20) has laterally arranged pin-shaped elements (29) for fixing the entire primary optics assembly (10) to the light source (100) or to the light source carrier ( 104) of the lighting device (1) are used. Primäroptikbaugruppe (10) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Halterung (20) aus einem Metall, insbesondere aus Aluminium, gefertigt ist.Primary optics module (10) according to one of claims 1 to 10, characterized in that the holder (20) is made of a metal, in particular of aluminum. Primäroptikbaugruppe (10) nach Anspruch 11, dadurch gekennzeichnet, dass die Halterung (20) in einem Thixomolding-Verfahren hergestellt ist.The primary optics assembly (10) according to claim 11, characterized in that the holder (20) is made in a thixomolding process. Beleuchtungseinrichtung (1) eines Kraftfahrzeugs, insbesondere Kraftfahrzeugscheinwerfer, umfassend ein Gehäuse (2) mit einer durch eine transparente Abdeckscheibe (5) verschlossenen Lichtaustrittsöffnung (4) und mit einem darin angeordneten Lichtmodul (6, 7, 8), das ein Leuchtmittel (100) zum Aussenden von Licht und eine Primäroptikbaugruppe (10) mit mehreren matrixartig nebeneinander und/oder übereinander angeordneten Primäroptikelementen (12) zum Bündeln zumindest eines Teils des ausgesandten Lichts umfasst, dadurch gekennzeichnet, dass die Primäroptikbaugruppe (10) nach einem der Ansprüche 1 bis 12 ausgebildet ist.Lighting device (1) of a motor vehicle, in particular a motor vehicle headlight, comprising a housing (2) with a light exit opening (4) closed by a transparent cover (5) and with a light module (6, 7, 8) arranged therein, which has a light source (100). for emitting light and a primary optic assembly (10) having a plurality of primary optic elements (12) arranged in a matrix-like manner and / or one above the other for bundling at least part of the emitted light, characterized in that the primary optic assembly (10) is designed according to one of claims 1 to 12 is.
EP17202043.0A 2016-12-19 2017-11-16 Primary lens assembly for use in a motor vehicle lighting device and motor vehicle lighting device with such a primary lens assembly Active EP3339720B1 (en)

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EP3339720B1 (en) 2020-12-30
CN108204570A (en) 2018-06-26
DE102016124800A1 (en) 2018-06-21

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