EP3312501B1 - Illumination device for vehicles - Google Patents

Illumination device for vehicles Download PDF

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Publication number
EP3312501B1
EP3312501B1 EP17196439.8A EP17196439A EP3312501B1 EP 3312501 B1 EP3312501 B1 EP 3312501B1 EP 17196439 A EP17196439 A EP 17196439A EP 3312501 B1 EP3312501 B1 EP 3312501B1
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EP
European Patent Office
Prior art keywords
micro
field
aperture
elements
optics
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.)
Active
Application number
EP17196439.8A
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German (de)
French (fr)
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EP3312501A1 (en
Inventor
Edwin N. KAMAU
Franziska Kley
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.)
Hella GmbH and Co KGaA
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Hella GmbH and Co KGaA
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Publication of EP3312501A1 publication Critical patent/EP3312501A1/en
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Publication of EP3312501B1 publication Critical patent/EP3312501B1/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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—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]
    • 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
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/101—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening permanently, e.g. welding, gluing or riveting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • 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 invention relates to a lighting device for vehicles with a light source and with an optics unit for generating a predetermined light distribution, the optics unit having a micro-optics field with a plurality of micro-optics elements and a micro-aperture field with a plurality of micro-aperture elements.
  • a lighting device for vehicles which has an optical unit for generating a predetermined light distribution.
  • the optics unit comprises reflector elements and a lens, with the reflector elements each being associated with diaphragm elements of a diaphragm.
  • the reflector elements and the screen elements have dimensions in the mm range.
  • a lighting device for vehicles which has a light source and an optics unit consisting of a micro-optics field and a micro-aperture field.
  • the micro-optics field consists of a micro-optics entry field and a micro-optics exit field, which each have micro-optics entry elements or micro-optics exit elements on a side facing away from one another.
  • the micro-aperture field is arranged between the micro-optics entry field and the micro-optics exit field and has a plurality of micro-aperture elements assigned to the micro-optics entry elements or micro-optics exit elements of the micro-optics entry field or micro-optics exit field.
  • the micro-aperture elements have a contour so that a light distribution with a predetermined light/dark boundary can be generated.
  • the micro-aperture field is designed as a vapor-deposited layer or as a flat film, in which appropriate openings are provided for the passage of light.
  • a disadvantage of the known lighting device is that it is not possible to separate the light control by channel. Light that passes through a first micro-optics entry element, a micro-aperture element downstream in the main radiation, and another downstream micro-optics exit element can be partially deflected as scattered light into another channel (adjacent micro-optics entry element, micro-aperture element, micro-optics exit element). This can lead to unwanted optical effects, such as "ghosting". Such "ghost images” have to be masked out with relatively great effort using screens, so-called "light traps”.
  • the object of the present invention is therefore to further develop a lighting device for vehicles with a light source and an optical unit having a micro-optical field and a micro-aperture field in such a way that predetermined light distributions with defined light figures can be generated with little effort.
  • the invention has the features of patent claim 1 in order to solve this problem.
  • a micro-aperture array is provided with a thickness ranging from 0.1 mm to 2.00 mm.
  • a relatively “thick” diaphragm field can minimize any scattered light that would otherwise be present.
  • a significantly improved channel separation can take place in the optical unit, with a channel being formed by at least one micro-optical element and a micro-aperture element arranged in front of the same in the main emission direction.
  • a homogeneous light distribution with a predetermined light figure including light/dark boundaries can be provided without the undesired scattered light having to be “filtered out” by additional screens (light traps).
  • the optimization of the micro-aperture field according to the invention enables an efficient and compact construction of the lighting device.
  • the micro-aperture elements have a contour such that light passing through the respective micro-aperture elements passes through a plurality of micro-optical elements arranged next to one another in the plane of the micro-optical field.
  • a micro-aperture element is thus assigned to a plurality of micro-optical elements of the same micro-optical field.
  • this allows more light to pass through the "channels" of the optics unit, so that the luminous flux is increased.
  • this makes it easier to manufacture the micro-aperture field.
  • the micro-aperture elements can each be assigned to a single micro-optical element of the same micro-optical field and the Micro-aperture elements each have the same contour. In this way, a light distribution with a predetermined light/dark boundary can advantageously be generated.
  • the micro-aperture field is designed as an injection molded part that can be produced by injection molding. Because of its rigid design, the micro-aperture panel can be used to adjust or hold the micro-optical panel.
  • the micro-aperture array can also be used to adjust and hold the several micro-optical arrays.
  • the micro-optics field consists exclusively of a light exit field with a plurality of micro-optics exit elements.
  • the micro-aperture field is arranged in the main emission direction behind the light exit field at a distance or directly adjacent to a flat side of the light exit field.
  • the micro-optical field consists of a light entry field arranged behind the micro diaphragm field in the main emission direction and a light exit field arranged in front of the micro diaphragm field in the main emission direction.
  • the micro-optical entry elements serve to pre-shape the light before it is imaged by the micro-optical exit elements in accordance with the desired light distribution.
  • a lighting device for vehicles according to the invention can be used as a headlight to generate a low beam function with a light/dark boundary or a different light distribution.
  • the lighting device for generating geometrically defined shapes such as Lettering, symbols or simple geometric figures such as rectangles, squares, etc. are used.
  • the lighting device has a light source 1 and an optical unit 2 arranged in front of the light source 1 in the main emission direction H of the lighting device for generating the predetermined light distribution.
  • the optics unit 2 has a micro-optics field 3 with a plurality of micro-optics elements 4, which are arranged on a front side of the micro-optics field 3 in the main emission direction H.
  • a micro-aperture field 5 with a plurality of micro-aperture elements 6 is arranged behind the micro-optical field 3 in the main emission direction H, the micro-aperture field 5 being arranged at a distance a from a flat and optic-free rear side 7 of the micro-optical field 3 .
  • the optics unit 2 comprises a lens 8 arranged between the light source 1 and the micro-aperture field 5 , which, as an optical attachment, essentially parallelizes the light emitted by the light source 1 before it impinges on the micro-aperture field 5 .
  • the micro-optics field 3 is designed as a light exit field.
  • the micro-optical elements 4 are arranged as micro-optical exit elements and have dimensions in the ⁇ m range.
  • the micro-optical exit elements 4 are arranged in a matrix-like manner in rows and columns, each having the same dimensions.
  • the micro-aperture elements 6 of the micro-aperture field 5 are each elongated and arranged to run in the horizontal direction. How out figure 3 As can be seen, the micro-aperture elements 6 each have rectangular openings 13 which extend continuously from a first upright narrow edge 9 to an opposite and parallel second narrow edge 10 of the micro-aperture field 5 . The micro-aperture elements 6 and the openings 13 are arranged at a vertical distance b, preferably the same distance b, from one another.
  • the rectangular openings 13 of the micro-aperture elements 6 are each assigned to a different row of micro-optics exit elements 4, ie each opening 13 covers a row of the micro-optics exit elements 4 or is arranged behind a row of micro-exit elements 4 in the main emission direction H.
  • the micro-aperture elements 6 thus have an elongated contour, so that light 11 passing through the respective micro-aperture elements 4 impinges on a plurality of micro-optical exit elements 4 .
  • a lower edge 12 of the opening 13 is used to map the light/dark boundary of the light distribution, in the present exemplary embodiment a front-end light distribution. How out figure 4 As can be seen, the micro-aperture field 5 is arranged in a focal plane of the micro-optics exit elements 4 .
  • the micro-aperture elements 4 have elongated webs 16 running in the horizontal direction, between which the elongated, preferably rectangular openings 13 run.
  • the micro-aperture field 5 has a thickness d in the range from 0.1 mm to 2.00 mm.
  • the micro-aperture panel 5 is designed as a rigid component that can be produced, for example, by injection molding. The injection molded part thus formed can be attached to a housing of the lighting device.
  • the micro-aperture field 5 can consist of a metal material or a plastic material, for example. It is made of a non-translucent material.
  • the optics unit 2 also includes a micro-optics entry field 3 ′, which is arranged in the main emission direction H behind the micro-aperture field 5 at a distance c.
  • a micro-optics entry field 3 ′ which is arranged in the main emission direction H behind the micro-aperture field 5 at a distance c.
  • the micro-optics entry field 3' and the micro-optics exit field 3 form the micro-optics field, with the micro-optics entry field 3' forming a light entry field.
  • the micro-optics entry field 3 ' has micro-optics elements 4 on a rear side facing away from the micro-aperture field 5, which, like the micro-optics elements 4 of the Micro-optics exit field 3 are lens-shaped.
  • a front side 15 of the micro-optics entry field 3 ' is - like the rear side 7 of the micro-optics exit field 3 - flat.
  • the micro-optics entry field 3', the micro-optics exit field 3 and the micro-aperture field 5 are arranged parallel to one another and in each case in the vertical direction.
  • the micro-aperture field 5 is arranged in the main emission direction H behind the micro-optics entry field 3 ′ and the micro-optics exit field 3 . It is thus located between the micro-optics entry field 3' and the lens 8 or the light source 1.
  • the micro-aperture field 5 is arranged at a distance f from the micro-optics entry field 3'.
  • the micro-optics entry field 3' is at a distance g from the micro-optics exit field 3.
  • the distance between the micro-aperture field 5 on the one hand and the micro-optics entry field 3' and the micro-optics exit field 3 can be different from the embodiment according to FIG figure 5 be zero.
  • the micro-aperture panel 5 is in direct, planar contact with the front side 15 of the micro-optics entrance panel 3 ′ and the rear side 7 of the micro-optics exit panel 3 .
  • the micro-aperture field 5 can, for example, be clamped mechanically between the micro-optics entry field 3 ′ and the micro-optics exit field 3 .
  • the micro-aperture field 5 can also be glued to the micro-optics entrance field 3 ′ and the micro-optics exit field 3 .
  • the figure 7 The assembly shown consists of the micro-optics entrance field 3', the micro-aperture field 5 and the micro-optics exit field 3 can be made in one piece, with the micro-aperture field 5 being overmoulded, for example, to form the micro-optics entry field 3' and the micro-optics exit field 3.
  • the micro-aperture field 5 used as an insert in a mold cavity of an injection molding machine.
  • the structural unit can also be produced by two-component injection molding.
  • a micro-aperture field 5′ can be provided, which consists of a plurality of micro-aperture elements 6′ each assigned to the micro-optical elements 4 . These have rectangular openings 13' of the same dimensions, the openings 13' covering the micro-optical elements 4 in a horizontal projection.
  • micro-aperture field 5 according to figure 9 this - like micro-aperture field 5' - has a number of openings 13" corresponding to the number of micro-optical elements 4 of the micro-optical entry field 3' or micro-optical exit field 3.
  • the micro-aperture elements 6" are designed in such a way that the openings 13". differ line by line.
  • the openings 13" have the same dimension in each line.
  • different light figures can thus be generated with a single micro-aperture field 5".
  • the light source 1 is preferably designed as an LED light source. It can also consist of several LED light sources (LED chips).
  • the lighting device described can be designed as a light module.
  • Several light modules can be installed in one housing for a headlight function.
  • the light sources 1 of the light modules or groups of light sources 1 or light modules can be controlled independently of one another.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung betrifft eine Beleuchtungsvorrichtung für Fahrzeuge mit einer Lichtquelle und mit einer Optikeinheit zur Erzeugung einer vorgegebenen Lichtverteilung, wobei die Optikeinheit ein Mikrooptikfeld mit einer Mehrzahl von Mikrooptikelementen und einem Mikroblendenfeld mit einer Mehrzahl von Mikroblendenelementen aufweist.The invention relates to a lighting device for vehicles with a light source and with an optics unit for generating a predetermined light distribution, the optics unit having a micro-optics field with a plurality of micro-optics elements and a micro-aperture field with a plurality of micro-aperture elements.

Aus der AT 513 738 B1 ist eine Beleuchtungsvorrichtung für Fahrzeuge bekannt, die eine Optikeinheit zur Erzeugung einer vorgegebenen Lichtverteilung aufweist. Die Optikeinheit umfasst Reflektorelemente und eine Linse, wobei den Reflektorelementen jeweils Blendenelemente einer Blende zugeordnet sind. Die Reflektorelemente und die Blendenelemente weisen Abmessungen im mm-Bereich auf.From the AT 513 738 B1 a lighting device for vehicles is known which has an optical unit for generating a predetermined light distribution. The optics unit comprises reflector elements and a lens, with the reflector elements each being associated with diaphragm elements of a diaphragm. The reflector elements and the screen elements have dimensions in the mm range.

Aus der AT 514967 B1 ist eine Beleuchtungsvorrichtung für Fahrzeuge bekannt, die eine Lichtquelle und eine Optikeinheit bestehend aus einem Mikrooptikfeld sowie einem Mikroblendenfeld aufweist. Das Mikrooptikfeld besteht aus einem Mikrooptik-Eintrittsfeld und einem Mikrooptik-Austrittsfeld, die jeweils auf einer zueinander abgewandten Seite Mikrooptik-Eintrittselemente bzw. Mikrooptik-Austrittselemente aufweisen. Zwischen dem Mikrooptik-Eintrittsfeld und dem Mikrooptik-Austrittsfeld ist das Mikroblendenfeld angeordnet, das eine Mehrzahl von jeweils den Mikrooptik-Eintrittselementen bzw. Mikrooptik-Austrittselementen des Mikrooptik-Eintrittsfeldes bzw. Mikrooptik-Austrittsfeldes zugeordnete Mikroblendenelemente aufweist. Die Mikroblendenelemente weisen eine Kontur auf, so dass eine Lichtverteilung mit einer vorgegebenen Hell-/Dunkelgrenze erzeugbar ist. Das Mikroblendenfeld ist als eine aufgedampfte Schicht oder als eine ebene Folie ausgebildet, in welche entsprechende Öffnungen zum Durchtritt von Licht vorgesehen sind. Nachteilig an der bekannten Beleuchtungsvorrichtung ist, dass eine kanalweise Trennung der Lichtsteuerung nicht möglich ist. Licht, das durch ein erstes Mikrooptik-Eintrittselement, eine in Hauptabstrahlung nachgelagertes Mikroblendenelement sowie ein weiteres nachgelagertes Mikrooptik-Austrittselement tritt, kann als Streulicht teilweise in einen anderen Kanal (benachbartes Mikrooptik-Eintrittselement, Mikroblendenelement, Mikrooptik-Austrittselement) abgelenkt werden. Hierdurch kann es zu ungewollten optischen Effekten, wie beispielsweise "Geisterbildern" kommen. Mit relativ großem Aufwand müssen solche "Geisterbilder" über Blenden, sogenannte "Lichtfallen", ausgeblendet werden.From the AT514967B1 a lighting device for vehicles is known which has a light source and an optics unit consisting of a micro-optics field and a micro-aperture field. The micro-optics field consists of a micro-optics entry field and a micro-optics exit field, which each have micro-optics entry elements or micro-optics exit elements on a side facing away from one another. The micro-aperture field is arranged between the micro-optics entry field and the micro-optics exit field and has a plurality of micro-aperture elements assigned to the micro-optics entry elements or micro-optics exit elements of the micro-optics entry field or micro-optics exit field. The micro-aperture elements have a contour so that a light distribution with a predetermined light/dark boundary can be generated. The micro-aperture field is designed as a vapor-deposited layer or as a flat film, in which appropriate openings are provided for the passage of light. A disadvantage of the known lighting device is that it is not possible to separate the light control by channel. Light that passes through a first micro-optics entry element, a micro-aperture element downstream in the main radiation, and another downstream micro-optics exit element can be partially deflected as scattered light into another channel (adjacent micro-optics entry element, micro-aperture element, micro-optics exit element). This can lead to unwanted optical effects, such as "ghosting". Such "ghost images" have to be masked out with relatively great effort using screens, so-called "light traps".

Aufgabe der vorliegenden Erfindung ist es daher, eine Beleuchtungsvorrichtung für Fahrzeuge mit einer Lichtquelle und einer ein Mikrooptikfeld sowie ein Mikroblendenfeld aufweisenden Optikeinheit derart weiterzubilden, dass mit geringem Aufwand vorgegebene Lichtverteilungen mit definierten Lichtfiguren erzeugt werden können. Zur Lösung dieser Aufgabe weist die Erfindung die Merkmale des Patentanspruchs 1 auf.The object of the present invention is therefore to further develop a lighting device for vehicles with a light source and an optical unit having a micro-optical field and a micro-aperture field in such a way that predetermined light distributions with defined light figures can be generated with little effort. The invention has the features of patent claim 1 in order to solve this problem.

Nach der Erfindung ist ein Mikroblendenfeld mit einer Dicke im Bereich von 0,1 mm bis 2,00 mm vorgesehen. Überraschenderweise hat sich gezeigt, dass sich durch ein relativ "dickes" Blendenfeld ein ansonsten vorhandenes Streulicht minimieren lässt. Es kann eine signifikant verbesserte Kanaltrennung in der Optikeinheit erfolgen, wobei ein Kanal durch mindestens ein Mikrooptikelement und ein in Hauptabstrahlrichtung vor demselben angeordnetes Mikroblendenelement gebildet. Vorteilhaft kann eine homogene Lichtverteilung mit einer vorgegebenen Lichtfigur einschließlich Hell/Dunkelgrenzen bereitgestellt werden, ohne dass durch zusätzliche Blenden (Lichtfalle) das unerwünschte Streulicht "herausgefiltert" werden muss. Die erfindungsgemäße Optimierung des Mikroblendenfeldes ermöglicht einen effizienten und kompakten Aufbau der Beleuchtungsvorrichtung.According to the invention, a micro-aperture array is provided with a thickness ranging from 0.1 mm to 2.00 mm. Surprisingly, it has been shown that a relatively “thick” diaphragm field can minimize any scattered light that would otherwise be present. A significantly improved channel separation can take place in the optical unit, with a channel being formed by at least one micro-optical element and a micro-aperture element arranged in front of the same in the main emission direction. Advantageously, a homogeneous light distribution with a predetermined light figure including light/dark boundaries can be provided without the undesired scattered light having to be “filtered out” by additional screens (light traps). The optimization of the micro-aperture field according to the invention enables an efficient and compact construction of the lighting device.

Nach der Erfindung weisen die Mikroblendenelemente eine Kontur auf, so dass durch die jeweiligen Mikroblendenelemente durchtretendes Licht durch mehrere in der Ebene des Mikrooptikfeldes nebeneinander angeordnete Mikrooptikelemente durchtritt.According to the invention, the micro-aperture elements have a contour such that light passing through the respective micro-aperture elements passes through a plurality of micro-optical elements arranged next to one another in the plane of the micro-optical field.

Ein Mikroblendenelement ist somit mehreren Mikrooptikelementen desselben Mikrooptikfeldes zugeordnet. Vorteilhaft kann hierdurch mehr Licht durch die "Kanäle" der Optikeinheit hindurchtreten, so dass der Lichtstrom erhöht wird. Darüber hinaus kann hierdurch das Mikroblendenfeld einfacher gefertigt werden.A micro-aperture element is thus assigned to a plurality of micro-optical elements of the same micro-optical field. Advantageously, this allows more light to pass through the "channels" of the optics unit, so that the luminous flux is increased. In addition, this makes it easier to manufacture the micro-aperture field.

Nach einer nicht erfindungsgemäßen Weiterbildung können die Mikroblendenelemente jeweils einem einzigen Mikrooptikelement desselben Mikrooptikfeldes zugeordnet und die Mikroblendenelemente weisen jeweils die gleiche Kontur auf. Vorteilhaft kann hierdurch eine Lichtverteilung mit einer vorgegebenen Hell-/Dunkelgrenze erzeugt werden.According to a development not according to the invention, the micro-aperture elements can each be assigned to a single micro-optical element of the same micro-optical field and the Micro-aperture elements each have the same contour. In this way, a light distribution with a predetermined light/dark boundary can advantageously be generated.

Nach einer Weiterbildung der Erfindung ist das Mikroblendenfeld als ein Spritzgießteil ausgebildet, das durch Spritzgießen herstellbar ist. Aufgrund ihrer starren Ausbildung kann das Mikroblendenfeld zur Justierung bzw. Halterung des Mikrooptikfeldes dienen.According to a development of the invention, the micro-aperture field is designed as an injection molded part that can be produced by injection molding. Because of its rigid design, the micro-aperture panel can be used to adjust or hold the micro-optical panel.

Bei Verwendung von mehreren Mikrooptikfeldern quer zur Hauptabstrahlrichtung kann das Mikroblendenfeld auch zur Justierung und Halterung der mehreren Mikrooptikfelder dienen.If several micro-optical arrays are used transversely to the main emission direction, the micro-aperture array can also be used to adjust and hold the several micro-optical arrays.

Nach einer Ausführungsform der Erfindung besteht das Mikrooptikfeld ausschließlich aus einem Lichtaustrittsfeld mit einer Mehrzahl von Mikrooptik-Austrittselementen. Das Mikroblendenfeld ist in Hauptabstrahlrichtung hinter dem Lichtaustrittsfeld in einem Abstand oder direkt an einer Flachseite des Lichtaustrittsfeldes anliegend angeordnet.According to one embodiment of the invention, the micro-optics field consists exclusively of a light exit field with a plurality of micro-optics exit elements. The micro-aperture field is arranged in the main emission direction behind the light exit field at a distance or directly adjacent to a flat side of the light exit field.

Nach einer alternativen Ausführungsform der Erfindung besteht das Mikrooptikfeld aus einem in Hauptabstrahlrichtung hinter dem Mikroblendenfeld angeordneten Lichteintrittsfeld und einem in Hauptabstrahlrichtung vor dem Mikroblendenfeld angeordneten Lichtaustrittsfeld. Die Mikrooptik-Eintrittselemente dienen einer Vorformung des Lichtes, bevor es durch die Mikrooptik-Austrittselemente entsprechend der gewünschten Lichtverteilung abgebildet wird.According to an alternative embodiment of the invention, the micro-optical field consists of a light entry field arranged behind the micro diaphragm field in the main emission direction and a light exit field arranged in front of the micro diaphragm field in the main emission direction. The micro-optical entry elements serve to pre-shape the light before it is imaged by the micro-optical exit elements in accordance with the desired light distribution.

Weitere Vorteile der Erfindung ergeben sich aus den weiteren Unteransprüchen. Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert.Further advantages of the invention result from the further dependent claims. Exemplary embodiments of the invention are explained in more detail below with reference to the drawings.

Es zeigen:

Fig. 1
eine perspektivische Darstellung einer Beleuchtungsvorrichtung nach einer
Fig. 2
ersten Ausführungsform von seitlich vorne gesehen, eine Seitenansicht der Beleuchtungsvorrichtung gemäß Figur 1,
Fig. 3
eine Vorderansicht eines Mikroblendenfeldes nach einer ersten Ausführungsform,
Fig. 4
eine Seitenansicht des Mikrooptikfeldes der Beleuchtungsvorrichtung nach der ersten Ausführungsform mit eingezeichneten Grenzstrahlen ausgehend von einer Kante eines Mikroblendenelementes des Mikroblendenfeldes gemäß Figur 3,
Fig. 5
eine perspektivische Darstellung und Seitenansicht der Beleuchtungsvorrichtung nach einer zweiten Ausführungsform,
Fig. 6
eine perspektivische Darstellung und Seitenansicht der Beleuchtungsvorrichtung nach einer dritten Ausführungsform,
Fig. 7
eine perspektivische Darstellung und Seitenansicht der Beleuchtungsvorrichtung nach einer vierten Ausführungsform,
Fig. 8
eine Vorderansicht eines Mikroblendenfeldes nach einer nicht erfindungsgemäßen Ausführungsform und
Fig. 9
eine Vorderansicht eines Mikroblendenfeldes nach einer weiteren nicht erfindungsgemäßen Ausführungsform.
Show it:
1
a perspective view of a lighting device according to one
2
First embodiment seen from the front side, a side view of the lighting device according to figure 1 ,
3
a front view of a micro-aperture array according to a first embodiment,
4
a side view of the micro-optical field of the illumination device according to the first embodiment with boundary rays drawn starting from an edge of a micro-aperture element of the micro-aperture field according to FIG figure 3 ,
figure 5
a perspective view and side view of the lighting device according to a second embodiment,
6
a perspective view and side view of the lighting device according to a third embodiment,
7
a perspective view and side view of the lighting device according to a fourth embodiment,
8
a front view of a micro-shutter array according to an embodiment not according to the invention and
9
12 is a front view of a micro-shutter array according to another embodiment not in accordance with the invention.

Eine erfindungsgemäße Beleuchtungsvorrichtung für Fahrzeuge kann als Scheinwerfer zur Erzeugung einer Abblendlichtfunktion mit einer Hell-/Dunkelgrenze oder einer anderen Lichtverteilung genutzt werden. Alternativ kann die Beleuchtungsvorrichtung auch zur Erzeugung von geometrisch abgegrenzten Formen, wie beispielsweise Schriftzügen, Symbolen oder einfachen geometrischen Figuren, wie Rechtecken, Quadraten etc. eingesetzt werden.A lighting device for vehicles according to the invention can be used as a headlight to generate a low beam function with a light/dark boundary or a different light distribution. Alternatively, the lighting device for generating geometrically defined shapes, such as Lettering, symbols or simple geometric figures such as rectangles, squares, etc. are used.

Nach einer ersten Ausführungsform der Erfindung gemäß den Figuren 1 bis 4 weist die Beleuchtungsvorrichtung eine Lichtquelle 1 und eine in Hauptabstrahlrichtung H der Beleuchtungsvorrichtung vor der Lichtquelle 1 angeordnete Optikeinheit 2 zur Erzeugung der vorgegebenen Lichtverteilung auf. Die Optikeinheit 2 weist ein Mikrooptikfeld 3 mit einer Mehrzahl von Mikrooptikelementen 4 auf, der auf einer in Hauptabstrahlrichtung H vorderen Seite des Mikrooptikfeldes 3 angeordnet sind. In Hauptabstrahlrichtung H hinter dem Mikrooptikfeld 3 ist ein Mikroblendenfeld 5 mit einer Mehrzahl von Mikroblendenelementen 6 angeordnet, wobei das Mikroblendenfeld 5 in einem Abstand a zu einer ebenen und optikfreien rückwärtigen Seite 7 des Mikrooptikfeldes 3 angeordnet ist. Ferner umfasst die Optikeinheit 2 eine zwischen der Lichtquelle 1 und dem Mikroblendenfeld 5 angeordnete Linse 8, die als Vorsatzoptik von der Lichtquelle 1 abgestrahlte Licht im Wesentlichen parallelisiert, bevor es auf das Mikroblendenfeld 5 auftrifft.According to a first embodiment of the invention according to Figures 1 to 4 the lighting device has a light source 1 and an optical unit 2 arranged in front of the light source 1 in the main emission direction H of the lighting device for generating the predetermined light distribution. The optics unit 2 has a micro-optics field 3 with a plurality of micro-optics elements 4, which are arranged on a front side of the micro-optics field 3 in the main emission direction H. A micro-aperture field 5 with a plurality of micro-aperture elements 6 is arranged behind the micro-optical field 3 in the main emission direction H, the micro-aperture field 5 being arranged at a distance a from a flat and optic-free rear side 7 of the micro-optical field 3 . Furthermore, the optics unit 2 comprises a lens 8 arranged between the light source 1 and the micro-aperture field 5 , which, as an optical attachment, essentially parallelizes the light emitted by the light source 1 before it impinges on the micro-aperture field 5 .

Das Mikrooptikfeld 3 ist als ein Lichtaustrittsfeld ausgebildet. Die Mikrooptikelemente 4 sind als Mikrooptik-Austrittselemente angeordnet und weisen eine Dimension im µm-Bereich auf. Die Mikrooptik-Austrittselemente 4 sind matrixartig in Zeilen und Spalten angeordnet, wobei sie jeweils die gleiche Dimension aufweisen.The micro-optics field 3 is designed as a light exit field. The micro-optical elements 4 are arranged as micro-optical exit elements and have dimensions in the μm range. The micro-optical exit elements 4 are arranged in a matrix-like manner in rows and columns, each having the same dimensions.

Die Mikroblendenelemente 6 des Mikroblendenfeldes 5 sind jeweils langgestreckt und in horizontaler Richtung verlaufend angeordnet. Wie aus Figur 3 ersichtlich ist, weisen die Mikroblendenelemente 6 jeweils rechteckförmige Öffnungen 13 auf, die sich von einer ersten aufrechten Schmalkante 9 zu einer gegenüberliegenden und parallel verlaufenden zweiten Schmalkante 10 des Mikroblendenfeldes 5 durchgehend erstrecken. Die Mikroblendenelemente 6 bzw. die Öffnungen 13 sind in einem vertikalen Abstand b, vorzugsweise gleichen Abstand b, zueinander angeordnet. Die rechteckförmigen Öffnungen 13 der Mikroblendenelemente 6 sind jeweils einer unterschiedlichen Zeile von Mikrooptik-Austrittselementen 4 zugeordnet, d. h. jede Öffnung 13 überdeckt in horizontaler Projektion eine Zeile der Mikrooptik-Austrittselemente 4 bzw. ist in Hauptabstrahlrichtung H hinter einer Zeile von Mikro-Austrittselementen 4 angeordnet. Die Mikroblendenelemente 6 weisen somit eine langgestreckte Kontur auf, so dass durch die jeweiligen Mikroblendenelemente 4 durchtretendes Licht 11 auf mehrere Mikrooptik-Austrittselemente 4 trifft. Im vorliegenden Ausführungsbeispiel dient eine untere Kante 12 der Öffnung 13 zur Abbildung der Hell-/Dunkelgrenze der Lichtverteilung, im vorliegenden Ausführungsbeispiel einer Vorfeldlichtverteilung. Wie aus Figur 4 ersichtlich ist, ist das Mikroblendenfeld 5 in einer Brennebene der Mikrooptik-Austrittselemente 4 angeordnet.The micro-aperture elements 6 of the micro-aperture field 5 are each elongated and arranged to run in the horizontal direction. How out figure 3 As can be seen, the micro-aperture elements 6 each have rectangular openings 13 which extend continuously from a first upright narrow edge 9 to an opposite and parallel second narrow edge 10 of the micro-aperture field 5 . The micro-aperture elements 6 and the openings 13 are arranged at a vertical distance b, preferably the same distance b, from one another. The rectangular openings 13 of the micro-aperture elements 6 are each assigned to a different row of micro-optics exit elements 4, ie each opening 13 covers a row of the micro-optics exit elements 4 or is arranged behind a row of micro-exit elements 4 in the main emission direction H. The micro-aperture elements 6 thus have an elongated contour, so that light 11 passing through the respective micro-aperture elements 4 impinges on a plurality of micro-optical exit elements 4 . In the present exemplary embodiment, a lower edge 12 of the opening 13 is used to map the light/dark boundary of the light distribution, in the present exemplary embodiment a front-end light distribution. How out figure 4 As can be seen, the micro-aperture field 5 is arranged in a focal plane of the micro-optics exit elements 4 .

Die Mikroblendenelemente 4 weisen langgestreckte und in horizontaler Richtung verlaufende Stege 16 auf, zwischen denen die langgestreckten, vorzugsweisen rechteckförmige Öffnungen 13, verlaufen.The micro-aperture elements 4 have elongated webs 16 running in the horizontal direction, between which the elongated, preferably rectangular openings 13 run.

Das Mikroblendenfeld 5 weist eine Dicke d im Bereich von 0,1 mm bis 2,00 mm auf. Das Mikroblendenfeld 5 ist als starres Bauteil ausgebildet, das beispielsweise durch Spritzgießen herstellbar ist. Das so gebildete Spritzgießteil kann an einem Gehäuse der Beleuchtungsvorrichtung befestigt sein. Das Mikroblendenfeld 5 kann beispielsweise aus einem Metallmaterial oder einem Kunststoffmaterial bestehen. Es besteht aus einem nicht lichtdurchlässigen Material.The micro-aperture field 5 has a thickness d in the range from 0.1 mm to 2.00 mm. The micro-aperture panel 5 is designed as a rigid component that can be produced, for example, by injection molding. The injection molded part thus formed can be attached to a housing of the lighting device. The micro-aperture field 5 can consist of a metal material or a plastic material, for example. It is made of a non-translucent material.

Nach einer zweiten Ausführungsform der Erfindung der Beleuchtungsvorrichtung gemäß Figur 5 umfasst die Optikeinheit 2 zusätzlich ein Mikrooptik-Eintrittsfeld 3', das in Hauptabstrahlrichtung H hinter dem Mikroblendenfeld 5 in einem Abstand c angeordnet ist. Aus Vereinfachungsgründen ist die Linse 8 und die Lichtquelle 1 nicht dargestellt. Das Mikrooptik-Eintrittsfeld 3' und das Mikrooptik-Austrittsfeld 3 bilden das Mikrooptikfeld, wobei das Mikrooptik-Eintrittsfeld 3' ein Lichteintrittsfeld bildet.According to a second embodiment of the invention according to the lighting device figure 5 the optics unit 2 also includes a micro-optics entry field 3 ′, which is arranged in the main emission direction H behind the micro-aperture field 5 at a distance c. For reasons of simplification, the lens 8 and the light source 1 are not shown. The micro-optics entry field 3' and the micro-optics exit field 3 form the micro-optics field, with the micro-optics entry field 3' forming a light entry field.

Gleiche Bauteile bzw. Bauteilfunktionen sind mit den gleichen Bezugszeichen versehen.The same components or component functions are provided with the same reference symbols.

Das Mikrooptik-Eintrittsfeld 3' weist auf einer dem Mikroblendenfeld 5 abgewandten rückwärtigen Seite 14 Mikrooptikelemente 4 auf, die wie die Mikrooptikelemente 4 des Mikrooptik-Austrittsfeldes 3 linsenförmig ausgebildet sind. Eine vordere Seite 15 des Mikrooptik-Eintrittsfeldes 3' ist - wie die rückwärtige Seite 7 des Mikrooptik-Austrittsfeldes 3 - eben ausgebildet. Das Mikrooptik-Eintrittsfeld 3', das Mikrooptik-Austrittsfeld 3 und das Mikroblendenfeld 5 sind parallel zueinander und jeweils in vertikaler Richtung angeordnet.The micro-optics entry field 3 'has micro-optics elements 4 on a rear side facing away from the micro-aperture field 5, which, like the micro-optics elements 4 of the Micro-optics exit field 3 are lens-shaped. A front side 15 of the micro-optics entry field 3 'is - like the rear side 7 of the micro-optics exit field 3 - flat. The micro-optics entry field 3', the micro-optics exit field 3 and the micro-aperture field 5 are arranged parallel to one another and in each case in the vertical direction.

Nach einer alternativen Ausführungsform der Erfindung gemäß Figur 6 ist das Mikroblendenfeld 5 in Hauptabstrahlrichtung H hinter dem Mikrooptik-Eintrittsfeld 3' und dem Mikrooptik-Austrittsfeld 3 angeordnet. Es befindet sich somit zwischen dem Mikrooptik-Eintrittsfeld 3' und der Linse 8 bzw. der Lichtquelle 1. Das Mikroblendenfeld 5 ist in einem Abstand f zu dem Mikrooptik-Eintrittsfeld 3' angeordnet. Das Mikrooptik-Eintrittsfeld 3' befindet sich in einem Abstand g zu dem Mikrooptik-Austrittsfeld 3.According to an alternative embodiment of the invention figure 6 the micro-aperture field 5 is arranged in the main emission direction H behind the micro-optics entry field 3 ′ and the micro-optics exit field 3 . It is thus located between the micro-optics entry field 3' and the lens 8 or the light source 1. The micro-aperture field 5 is arranged at a distance f from the micro-optics entry field 3'. The micro-optics entry field 3' is at a distance g from the micro-optics exit field 3.

Nach einer weiteren Ausführungsform der Erfindung gemäß Figur 7 kann der Abstand zwischen dem Mikroblendenfeld 5 einerseits und dem Mikrooptik-Eintrittsfeld 3' und dem Mikrooptik-Austrittsfeld 3 im Unterschied zu der Ausführungsform gemäß Figur 5 Null sein. Dies bedeutet, dass das Mikroblendenfeld 5 direkt unter flächiger Anlage an der vorderen Seite 15 des Mikrooptik-Eintrittsfeldes 3' und der rückwärtigen Seite 7 des Mikrooptik-Austrittsfeldes 3 anliegt. Das Mikroblendenfeld 5 kann beispielsweise durch das Mikrooptik-Eintrittsfeld 3' und das Mikrooptik-Austrittsfeld 3 mechanisch zwischen denselben eingespannt sein. Alternativ kann das Mikroblendenfeld 5 auch mit dem Mikrooptik-Eintrittsfeld 3' und dem Mikrooptik-Austrittsfeld 3 verklebt sein.According to a further embodiment of the invention figure 7 the distance between the micro-aperture field 5 on the one hand and the micro-optics entry field 3' and the micro-optics exit field 3 can be different from the embodiment according to FIG figure 5 be zero. This means that the micro-aperture panel 5 is in direct, planar contact with the front side 15 of the micro-optics entrance panel 3 ′ and the rear side 7 of the micro-optics exit panel 3 . The micro-aperture field 5 can, for example, be clamped mechanically between the micro-optics entry field 3 ′ and the micro-optics exit field 3 . Alternatively, the micro-aperture field 5 can also be glued to the micro-optics entrance field 3 ′ and the micro-optics exit field 3 .

Nach einer alternativen Ausführungsform der Erfindung kann die in Figur 7 dargestellte Baueinheit bestehend aus dem Mikrooptik-Eintrittsfeld 3', dem Mikroblendenfeld 5 und dem Mikrooptik-Austrittsfeld 3 einstückig ausgebildet sein, wobei das Mikroblendenfeld 5 beispielsweise umspritzt wird zur Bildung des Mikrooptik-Eintrittsfeldes 3' und des Mikrooptik-Austrittsfeldes 3. Hierzu wird das Mikroblendenfeld 5 als Einlegeteil in einen Formraum einer Spritzgießmaschine eingesetzt. Alternativ kann die Baueinheit auch durch Zwei-Komponenten-Spritzgießen hergestellt sein.According to an alternative embodiment of the invention, the figure 7 The assembly shown consists of the micro-optics entrance field 3', the micro-aperture field 5 and the micro-optics exit field 3 can be made in one piece, with the micro-aperture field 5 being overmoulded, for example, to form the micro-optics entry field 3' and the micro-optics exit field 3. For this purpose, the micro-aperture field 5 used as an insert in a mold cavity of an injection molding machine. Alternatively, the structural unit can also be produced by two-component injection molding.

Nach einer alternativen nicht erfindungsgemäßen Ausführungsform des Mikroblendenfeldes 5 gemäß Figur 8 kann ein Mikroblendenfeld 5' vorgesehen sein, das aus einer Mehrzahl von jeweils den Mikrooptikelementen 4 zugeordneten Mikroblendenelementen 6' besteht. Diese weisen rechteckförmige Öffnungen 13' gleicher Dimension auf, wobei die Öffnungen 13' in horizontaler Projektion die Mikrooptikelemente 4 überdecken.According to an alternative embodiment of the micro-aperture field 5 according to the invention, which is not according to the invention figure 8 a micro-aperture field 5′ can be provided, which consists of a plurality of micro-aperture elements 6′ each assigned to the micro-optical elements 4 . These have rectangular openings 13' of the same dimensions, the openings 13' covering the micro-optical elements 4 in a horizontal projection.

Nach einer alternativen nicht erfindungsgemäßen Ausführungsform eines Mikroblendenfeldes 5" gemäß Figur 9 weist dieses - wie Mikroblendenfeld 5' - eine zu der Anzahl der Mikrooptikelemente 4 des Mikrooptik-Eintrittsfeldes 3' bzw. Mikrooptik-Austrittsfeldes 3 korrespondierende Anzahl von Öffnungen 13" auf. Die Mikroblendenelemente 6" sind jedoch so ausgebildet, dass die Öffnungen 13" sich zeilenweise unterscheiden. Je Zeile weisen die Öffnungen 13" die gleiche Dimension auf. Vorteilhaft können mit einem einzigen Mikroblendenfeld 5" somit unterschiedliche Lichtfiguren erzeugt werden.According to an alternative non-inventive embodiment of a micro-aperture field 5 "according to figure 9 this - like micro-aperture field 5' - has a number of openings 13" corresponding to the number of micro-optical elements 4 of the micro-optical entry field 3' or micro-optical exit field 3. However, the micro-aperture elements 6" are designed in such a way that the openings 13". differ line by line. The openings 13" have the same dimension in each line. Advantageously, different light figures can thus be generated with a single micro-aperture field 5".

Es versteht sich, dass die beispielhaft offenbarten Merkmale beliebig miteinander kombinierbar sind und somit von der Erfindung erfasst sind. Die Lichtquelle 1 ist vorzugsweise als LED-Lichtquelle ausgebildet. Sie kann auch aus mehreren LED-Lichtquellen (LED-Chips) bestehen.It goes without saying that the features disclosed by way of example can be combined with one another as desired and are therefore covered by the invention. The light source 1 is preferably designed as an LED light source. It can also consist of several LED light sources (LED chips).

Beispielsweise kann die beschriebene Beleuchtungsvorrichtung als Lichtmodul ausgebildet sein. Für eine Scheinwerferfunktion können mehrere Lichtmodule in einem Gehäuse verbaut sein. Die Lichtquellen 1 der Lichtmodule oder Gruppen von Lichtquellen 1 bzw. Lichtmodulen können unabhängig voneinander ansteuerbar sein.For example, the lighting device described can be designed as a light module. Several light modules can be installed in one housing for a headlight function. The light sources 1 of the light modules or groups of light sources 1 or light modules can be controlled independently of one another.

BezugszeichenlisteReference List

11
Lichtquellelight source
22
Optikeinheitoptical unit
3,3'3.3'
Mikrooptik-Feldmicro-optics field
44
Mikrooptikelementmicro-optical element
5,5',5"5.5'.5"
Mikroblendenfeldmicro aperture field
6,6',6"6.6',6"
Mikroblendenelementmicro aperture element
77
rückwärtige Seiteback side
88th
Linselens
99
1. Schmalkante1. narrow edge
1010
2. Schmalkante2. narrow edge
1111
Lichtlight
1212
untere Kantelower edge
13,13',13"13,13',13"
Öffnungenopenings
1414
rückwärtige Seiteback side
1515
vordere Seitefront side
1616
Stegewebs
HH
Hauptabstrahlrichtungmain emission direction
di.e
Dickethickness
a,b,c...ABC...
Abstanddistance

Claims (8)

  1. Illumination device for vehicles with a light source (1) and with a lens unit (2) for generating a specified light distribution, where the lens unit (2) features a micro-lens field (3, 3') with a plurality of micro-lens elements (4) and a micro-aperture field (5, 5', 5") with a plurality of micro-aperture elements (6, 6', 6") characterized in that the micro-aperture field (5, 5', 5") features a thickness (d) in the range from 0.1 mm to 2.00 mm and in that the micro-aperture elements (6, 6', 6") feature such a contour that when projecting the micro-aperture field (5, 5', 5") onto the micro-lens field (3, 3') several micro-lens elements (4) are covered by a single micro-aperture element (6, 6', 6").
  2. Illumination device in accordance with Claim 1, characterized in that the micro-aperture elements (6, 6', 6") each run elongated in a horizontal and/or in a vertical direction.
  3. Illumination device in accordance with one of Claims 1 through 2 characterized in that
    the micro-aperture field (5, 5', 5") is designed as an injection moulded part that can be manufactured by injection moulding.
  4. Illumination device in accordance with one of Claims 1 through 3, characterized in that the micro-lens field (3, 3') features a light emitting field with a plurality of micro-lens emitting elements (4), where the light emitting field features a distance (a) to the micro-aperture field (5, 5', 5") or is attached directly to a flat side.
  5. Illumination device in accordance with one of Claims 1 through 4, characterized in that
    the micro-lens field (3) features a light receiving field (3') with a plurality of micro-lens receiving elements (4), where the light receiving field is arranged at a distance (c) to the micro-aperture field (5) or is attached directly to a flat side.
  6. Illumination device in accordance with one of Claims 1 through 5 characterized in that the micro-aperture field (5, 5', 5") consists of a metallic material.
  7. Illumination device in accordance with one of Claims 1 through 6 characterized in that
    the light emitting field (3) and/or the light receiving field (3') can be manufactured by overmoulding the micro-aperture field (5, 5', 5") arranged in a moulding cavity.
  8. Illumination device in accordance with one of Claims 1 through 6 characterized in that
    the micro-aperture field (5, 5', 5") is held by gluing to the light emitting field (3) and/or the light receiving field (3') on the one hand or by mechanical clamping between the light emitting field (3) and the light receiving field (3') on the other.
EP17196439.8A 2016-10-19 2017-10-13 Illumination device for vehicles Active EP3312501B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016119880.3A DE102016119880A1 (en) 2016-10-19 2016-10-19 Lighting device for vehicles

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EP3312501A1 EP3312501A1 (en) 2018-04-25
EP3312501B1 true EP3312501B1 (en) 2022-03-23

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EP (1) EP3312501B1 (en)
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US10465874B2 (en) 2019-11-05
US20180106450A1 (en) 2018-04-19

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