EP2799761A2 - Module d'éclairage de phare de véhicule automobile - Google Patents

Module d'éclairage de phare de véhicule automobile Download PDF

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Publication number
EP2799761A2
EP2799761A2 EP14160613.7A EP14160613A EP2799761A2 EP 2799761 A2 EP2799761 A2 EP 2799761A2 EP 14160613 A EP14160613 A EP 14160613A EP 2799761 A2 EP2799761 A2 EP 2799761A2
Authority
EP
European Patent Office
Prior art keywords
light
optics
diaphragm
bulge
module
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
EP14160613.7A
Other languages
German (de)
English (en)
Other versions
EP2799761A3 (fr
EP2799761B1 (fr
Inventor
Wolfgang Hossfeld
Christian Buchberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Automotive Lighting Reutlingen Germany GmbH
Original Assignee
Automotive Lighting Reutlingen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Automotive Lighting Reutlingen GmbH filed Critical Automotive Lighting Reutlingen GmbH
Publication of EP2799761A2 publication Critical patent/EP2799761A2/fr
Publication of EP2799761A3 publication Critical patent/EP2799761A3/fr
Application granted granted Critical
Publication of EP2799761B1 publication Critical patent/EP2799761B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—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
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/338—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having surface portions added to its general concavity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—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
    • F21S41/60—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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/17—Arrangement or contour of the emitted light for regions other than high beam or low beam
    • F21W2102/18—Arrangement or contour of the emitted light for regions other than high beam or low beam for overhead signs

Definitions

  • the present invention relates to a light module for a motor vehicle headlight according to the preamble of claim 1.
  • Such a light module is from the DE 10 2008 036 192 known and has at least a first light source, a primary optics, a diaphragm and a secondary optics.
  • the primary optics is adapted to transfer light emanating from the light source into an intermediate light distribution lying between the primary optics and the secondary optics.
  • the diaphragm has a continuous outer edge and an aperture surface, which projects into the intermediate light distribution and which is delimited by an aperture edge.
  • the aperture is arranged with respect to the secondary optics so that the diaphragm edge is imaged by the secondary optics as a cut-off in a second light distribution, that of the secondary optics is generated in an apron of the light module as an image of the intermediate light distribution.
  • the primary optics is arranged with respect to the secondary optics such that the secondary optic light of the intermediate light distribution, which passes on a first side of the diaphragm at the diaphragm, in a first beam path in one on a first side of the light-dark boundary in the second light distribution distributed area.
  • Such a module produces a light distribution with light-dark boundary, such as a dimming or fog light.
  • a light module is also suitable, with at least one further light source and a further primary optics, to also generate a high beam distribution using the same secondary optics.
  • Such light modules are also known as projection systems. They consist of one or more LEDs as light sources with associated attachment optics as primary optics, a horizontal diaphragm and a projection lens as secondary optics. From the DE 10 2011 004 569 A1 a light module is known which uses a reflector as secondary optics. The invention is also applicable to such light modules.
  • the aperture creates a cut-off line that avoids dazzling oncoming vehicles.
  • a disadvantage of known projection systems is that only a little light reaches the area above the cut-off line, so that objects such as traffic signs are not sufficiently illuminated.
  • On the one hand not to dazzle oncoming vehicles, but on the other hand to ensure adequate detection of objects in this dark area exist statutory requirements that require light intensities between 64 and 625 cd in a range of typically 2 to 4 degrees in the vertical direction and -8 to 8 degrees in the horizontal direction.
  • the degrees for the vertical direction refer to deviations from a longitudinal direction of the motor vehicle upwards.
  • the degrees for the horizontal direction refer to deviations from the longitudinal direction to the right and left.
  • the vertex of the angle is located in the light module.
  • the object of the invention is to specify a light module of the type mentioned at the beginning, which light module is a rule-conforming overhead light distribution as a supplement to a rule-compliant Low beam distribution is created without the need for additional components and without affecting the appearance of the module to the outside.
  • the light module should also allow the generation of a high beam distribution.
  • Objects, such as those from the US Pat. No. 6,736,533 or the EP 624 753 are known, excrete because they block the beam path required for the high beam and usually require an additional component required.
  • the present invention differs in that the primary optics is adapted to divert a part of the light emanating from the light source so that it passes on a second side of the diaphragm and outside of the diaphragm and of the Secondary optics is distributed in a second beam path in a lying on a second side of the cut-off in the second light distribution area. For overhead lighting at least contributing light thus passes in particular outside the contiguous outer edge of the aperture.
  • the primary optics is arranged with respect to the secondary optics such that the secondary optics light of the intermediate light distribution, which passes on an upper side of the diaphragm at the diaphragm, in a first beam path in one below the light-dark Distributed boundary in the second light distribution area, the primary optics is adapted to divert a portion of the outgoing light from the light source so that it passes in a lying below the diaphragm area at the aperture and the secondary optics in a second beam path in one above the cut-off line is distributed in the second light distribution area.
  • the diaphragm surface is preferably aligned substantially parallel to the horizon.
  • the first side of the bezel is an upper side.
  • the first beam path runs up to the diaphragm edge above the diaphragm surface.
  • the area lying on the first side of the light-dark boundary in the second light distribution is the bright area of a low-beam light distribution. In the second light distribution, the bright area is below the cut-off line.
  • the second side of the bezel is then a bottom of the bezel.
  • the second beam path extends at least as far as the diaphragm edge below the diaphragm surface, and the region lying on the second side of the light-dark boundary in the second light distribution is therefore above this light-dark boundary. This is the darker area of a low beam distribution.
  • the so-called overhead area lies in this darker area of the low beam distribution.
  • An essential element of the invention is that part of the light emitted by the light source, which is used for the low beam, is directed by the primary optics under the aperture so that it is distributed by the secondary optics in the overhead area.
  • the local preposition refers to an orientation of the light module in the room in a proper use of the light module in a motor vehicle, which is on a flat surface.
  • Advantages of the invention are that this solution is applicable both for a pure dipped beam module as well as for a combined dipped beam / high beam module. It is also advantageous that the solution requires no additional components and that it does not affect the appearance of the module to the outside.
  • the invention provides overhead lighting that complements a low beam distribution and is used, for example, to illuminate gantries.
  • a particular advantage is that the invention allows the provision of overhead lighting with a projection module that uses semiconductor light sources with a primary optic and a mirror shutter.
  • the invention can be realized by changing the primary optics and requires no changes in secondary optics.
  • the secondary optics thus remains unchanged and is illuminated so that it directs light in the direction required for the desired overhead lighting.
  • the invention can be used both in light modules that use a projection lens as secondary optics, as well as in light modules that use a reflector as secondary optics.
  • the diaphragm preferably extends approximately horizontally between the primary optics and the secondary optics.
  • the light source is a semiconductor light source, in particular a light-emitting diode, mounted on a mounting carrier or a printed circuit board.
  • a first side of the diaphragm is realized as a reflecting surface. It is also preferred that both sides of the panel are realized as reflecting surfaces.
  • a further preferred embodiment is characterized in that the primary optics has a light entry surface having a plurality of partial surfaces, a light exit surface and a light deflecting side surface.
  • the light entry surface has a central part and peripheral parts adjacent to the central part and that the light source and the different parts of the light entry surface are arranged relative to each other so that the light undergoes various changes of direction when passing through the optical attachment, which diffraction and Reflection caused.
  • the light module is configured such that light whose path is on the first side of the diaphragm, undergoes a refraction at the light entrance, which takes place via a peripheral part of the light entry surface, undergoes an internal total reflection on a side surface and a refraction at Light exits via the light exit surface.
  • the attachment optics is set up to allow light which enters the light-conducting material of the attachment optics via the central part of the light entry surface to pass directly to the light exit surface without reflection on a side wall.
  • the primary optic has a bulge in its side surface, wherein the bulge lies in a part of the side surface of the attachment optics, which faces the same side as the second side of the diaphragm.
  • the bulge is integral with the remaining primary optics and protrudes from the side surface of the rest of the primary optic as a survey and is limited by a bulge side surface and a bulge-light exit surface.
  • the bulge lies in a part of the side surface of the attachment optics which is closer to the light exit surface of the primary optic than to the light entry surface.
  • the bulge has a light exit surface which adjoins the remaining light exit surface of the bulge, wherein the transition from the light exit surface to the other light exit surface without kink occurs.
  • the bulge side surface and the bulge light exit surface are arranged with respect to their alignment with the bulge side surface incident light of the light source so as to direct at least a portion of that light on the second side of the iris at the iris to the secondary optic directed.
  • the bulge and in particular its light exit surface is designed such that the overhead region of the light distribution is illuminated by the light emerging from the light exit surface.
  • a further preferred embodiment is characterized in that the bulge is realized in each case as a survey from the remaining intent optics.
  • At least one attachment optics one Has bulge which is adapted to divert a part of the light emanating from the light source so that it passes on a second side of the diaphragm at the aperture and from the secondary optics in a second beam path in one on a second side of the light-dark Boundary is distributed in the second light distribution lying area, this bulge is left or right of a plane that is spanned by the optical axis of the secondary optics and a vertical.
  • Fig. 1 shows in detail a light distribution generated by a light module according to the invention on a measuring screen, wherein the screen is located at a distance of several meters in front of the headlight.
  • a light distribution results in a proper use of the light module in a motor vehicle headlight in the motor vehicle.
  • Line H corresponds to the height of the horizon in front of the vehicle standing on level ground.
  • the line V divides the vehicle apron into a right and a left half space.
  • the crossing point HV marks a zero point on both lines, from which deviations in angular degrees are indicated.
  • the area 11 represents a rule-compliant light distribution for right-hand traffic.
  • the hatched area 11 with large line intervals is brightly illuminated and is bounded above by a light-dark boundary 13.
  • This low beam component is used to illuminate the road in front of the vehicle and the areas left and right of the road.
  • the cut-off line is asymmetrically high, on the one hand on the left side to avoid dazzling oncoming traffic and on the other hand to achieve the greatest possible range on the own, right side of the road.
  • the region 12 which is shaded with smaller line spacings above the cut-off line, represents the so-called overhead area. This area is less brightly illuminated than the area 11 but lighter than surroundings of the areas 11 and 12.
  • ECE R112, ECE R123 or SAE FMVSS108 is the overhead range is the range of -8 to +8 degrees in the horizontal direction and +2 to +4 degrees in the vertical direction. In this range, only low light intensities in the range of 64 to 625 cd are required and permissible, so that compliant light modules direct only a small portion of the luminous flux of the light module in this area.
  • the light in this area is mainly needed for the recognition of traffic signs. Since these have a high degree of reflection and a high contrast, only little light is required for detection. It is therefore possible to keep glare of oncoming traffic low due to low light intensities in this area and at the same time make it possible to recognize important objects.
  • FIG. 2 shows a side view of an embodiment of a light module according to the invention 14 with beam paths 31, 32 of the low-beam component and a beam path 33 of the overhead light component.
  • the light module 14 has a light source 21, a front optic 25, a diaphragm 26 and a secondary lens 28 as an embodiment of a secondary optics.
  • the light source 21 is preferably a semiconductor light source mounted on a mounting carrier or a printed circuit board, in particular a light-emitting diode. This applies to all light sources mentioned in this application.
  • the attachment optics 25 represents an embodiment of a primary optic which, by its arrangement and its optical properties, is adapted to transfer light emerging from the light source 21 into an intermediate light distribution lying between the primary optics and the secondary optics, which is concentrated in a small spatial area.
  • the primary optics collects and bundles light emanating from the light source.
  • the diaphragm 26 has an aperture surface which projects into the intermediate light distribution and which is delimited by an aperture edge 27.
  • the diaphragm 26 is arranged with respect to the secondary optics 28 such that the diaphragm edge 27 is imaged by the secondary optics 28 as a light-dark boundary 13 in a second light distribution, that of the secondary optics 28 in an apron of the light module 18 as an image of the intermediate light distribution is produced.
  • the second light distribution is, for example, in the Fig. 1 illustrated light distribution 11.
  • the primary optics 25 are arranged with respect to the secondary optics 28 such that the secondary optics 28 light of the intermediate light distribution, which passes on a first side of the diaphragm 26 at the diaphragm, in a first beam path 31, 32 in a on a first side of the light. Dark-border distributed in the second light distribution area. In the FIG. 2 the first side of the diaphragm faces the half space above the diaphragm.
  • the first beam path comprises all the light of the light source, which is directed by the primary optics on this first side of the diaphragm at the aperture on the secondary optics.
  • the partial beam path 32 in this case comprises the part of the light detected by the primary optics of the light source, which is directed by the primary optics without touching the diaphragm on the first side of the diaphragm and the diaphragm on the secondary optics.
  • the partial beam path 31 in this case comprises the part of the light detected by the primary optics of the light source, which is directed by the primary optics via a taking place on the first side of the diaphragm reflection on the diaphragm on the secondary optics.
  • the realized here as the top side 19 of the panel 26 is preferably realized as a reflective surface, which can be achieved in particular by a metallic coating. This applies in particular to the part of the first side 19 facing the diaphragm edge 27, since the light intensity of the light incident on the first side is comparatively greatest in the vicinity of the diaphragm edge 27. This results from the fact that the primary optics focus the light in this area.
  • the beam paths run past the diaphragm only on the first side of the diaphragm with or without reflection on the first side (upper side).
  • the primary optics and the secondary optics are arranged at a distance relative to one another which corresponds to the sum of a secondary-side image length of the primary optics and a primary-side focal length of the secondary optics.
  • the diaphragm edge 27 is located in the light path preferably at a distance behind the primary optics, which corresponds to the secondary-side image size of the primary optics and at a distance before the secondary optics, which corresponds to the primary-side focal length of the secondary optics.
  • the first side of the aperture 26 is its upwardly facing side.
  • the area lying on a first side of the light-dark boundary of the second light distribution is in the FIG. 1 the lying under the light-dark boundary bright area 11, so the low beam distribution.
  • the secondary lens 28 forms the intermediate light distribution upside down and mirrored (reversed) on a vertical axis.
  • a light module, as in the FIG. 2 is also referred to as a projection module.
  • projection modules are characterized in that they image an intermediate light distribution by a secondary optics (usually an imaging lens), which is generated by one or more light sources with matching primary optics (such as reflector or intent optics) in an intermediate image plane, which is at the focus of secondary optics ,
  • a diaphragm edge To generate a light-dark boundary is usually a diaphragm edge, which is arranged in the intermediate image plane.
  • Known light modules have primary optics and diaphragm arrangements which allow the light to pass only above the diaphragm. In this known manner, in the Fig. 1 shown Abblertztver gutter 11 are generated. However, there can be no light in the overhead area 12 according to FIG. 1 be steered.
  • the invention is characterized in that the primary optics is adapted to divert a portion of the outgoing light from the light source 21 so that it passes on a second side 20 of the diaphragm 26 at the aperture and from the secondary optics 28 in a second beam path 33 is distributed in a lying on a second side of the light-dark boundary in the second light distribution area.
  • the second beam path encompasses all the light from the light source, which passes from the primary optics on this side of the aperture on the Secondary optics is addressed.
  • the secondary optics directs at least part of this light into the overhead area.
  • the second side 20 of the bezel 26 is its downwardly facing side.
  • the area lying on a second side of the light-dark boundary of the second light distribution is in the FIG. 1 the light region 12 lying above the light-dark boundary, ie the overhead light distribution.
  • the secondary lens 28, the intermediate light distribution upside down and mirrored on a vertical axis (reversed) depicts.
  • each primary light source is directed in each case to the diaphragm edge.
  • the main emission direction of the primary light sources is not parallel to the optical axis of the secondary optics.
  • the primary light sources for the low beam function are arranged above the horizontal diaphragm surface.
  • the high-beam primary light sources are arranged below the horizontal diaphragm surface.
  • the light beam that is generated by the side surface of the bulge runs approximately parallel to the diaphragm surface, so that there is at least one partial light beam from the overhead light bundle that runs parallel to the diaphragm surface.
  • the primary optics or attachment optics 25 from the Fig. 2 is a kind of hybrid of an internally totally reflecting reflector and a lens.
  • the attachment optical system has a light entry surface having a plurality of partial surfaces 18, 19, a light exit surface 17 and a light deflecting side surface 24, 22 and is made of transparent material such as glass, PC or PMMA.
  • the light entrance surface 17 has a central part and peripheral parts adjacent to the central part.
  • the light source 21 and the different parts 18, 19 of the light entry surface are arranged relative to each other so that as large a part of the outgoing light from the light source 21 as steeply incident on the light entrance surface 18, that this light is not reflected there but in the light internally totally reflective part of the optical attachment 25 occurs. Overall, the light undergoes various changes in direction when passing through the optical attachment 25, which are caused by refraction or reflection.
  • the light propagating in the beam paths 31 and 32 whose path on the first side of the diaphragm (here above) runs along the diaphragm, undergoes a refraction at the light entrance, which takes place via a peripheral part 18 of the light entry surface, an internal total reflection at a side surface 24 and a refraction at the light exit via the light exit surface 17.
  • the internal total reflection has the optical attachment in common with a light guide. In contrast to a light guide, however, only very few, preferably only one internal total reflection, occur in a beam path of a front optical system, whereas in the case of a beam path running in an optical waveguide, these are generally much more reflections.
  • a light module according to the invention is characterized by a primary optic which is adapted to deflect a part of the light emanating from the light source so that it passes by the diaphragm on a second side of the diaphragm and by the secondary optics second beam path is distributed in a lying on a second side of the light-dark boundary in the second light distribution area.
  • the in the FIG. 2 shown attachment optics on a bulge 15 in its side surface 22.
  • the bulge 15 lies in a part of the side surface of the attachment optics, which faces the same side as the second side 20 of the diaphragm 26.
  • the bulge 15 is preferably integral with the other attachment optics and protrudes as elevation from the side surface 22 of the other attachment optics and is bounded by a bulge side surface 23 and a bulge light exit surface 16.
  • the bulge 2 of extending below the dotted line part of the attachment optics.
  • the bulge 15 is also located in a part of the side surface which is closer to the light exit surface 17 of the primary optics than at the light entry surface.
  • the bulge 15 has a light exit surface 16.
  • the light exit surface 16 preferably adjoins the remaining light exit surface 17 of the bulge 15.
  • the transition from the light exit surface 16 to the remaining light exit surface 17 preferably takes place without kinking and thus continuously differentiable.
  • the angles of incidence of the light incident on the bulge of the light source are fixed.
  • the bulge is preferably arranged so that it deflects the incident light in this solid angle to the light exit surface 16 and / or 17 that, taking into account the refraction occurring at the light exit surface 16 and / or 17 passes on the second side of the diaphragm 22 and is distributed by the secondary optics 28 in a second beam path 33 in the area lying on the second side of the cut-off line 13 in the second light distribution. In the FIG. 1 this is the range 12 above the cut-off line.
  • the bulge 15 and the illuminated over this bulge 15 Part 16 of the light exit surface of the attachment optics are also designed so that the light is distributed in a rule for overhead lighting angle range.
  • Said solid angle, below which the bulge appears viewed from the light source is preferably so large that the light of the light source propagating in it satisfies the light intensity requirements of a rule-compliant overhead lighting. Due to the there only small allowable light intensities there, the light exit surface 16 of the bulge 23 is much smaller than the rest of the light exit surface 17 of the optical attachment 25 and in a composite of several attachment optics primary optics in particular still correspondingly smaller than the light exit surface of the entire primary optics. This results from the fact that preferably less than half of the attachment optics of a primary optics having a plurality of attachment optics are provided with such a bulge.
  • FIG. 2 shows an exemplary embodiment of a projection light module according to the invention, which can direct enough light into the overhead region 12.
  • the light source 21 emits light, which is focused by the optical attachment 25.
  • the attachment optics is designed so that the majority of the light is directed through the bulging side surface 23 of the bulge 15 complementary parts 22, 24 of the side surface of the optical attachment 25 in the area lying above the preferably horizontally disposed aperture 26, while a smaller proportion of the light is deflected by the bulge 15 in the lying below the aperture 26 area.
  • the main part of the light is in the FIG. 1 represented by the beam paths 31 and 32, while the lower proportion of the light of the light source 21 is represented by the beam path 33.
  • the diaphragm edge 27 shadows part of the light in an intermediate image plane.
  • the intermediate image plane lies in the vicinity of the focal point of the secondary lens 28.
  • the secondary lens 28 images the light distribution in the intermediate image plane into the environment.
  • the rays that are directed across the aperture are imaged by the secondary lens in the low beam region 11.
  • the diaphragm edge generates the light-dark boundary 13.
  • the surface 23 is designed such that the rays, which are directed under the diaphragm, are imaged by the secondary lens into the overhead region 12.
  • FIG. 3 shows a perspective view of some components of an embodiment of a light module according to the invention.
  • the light of a light source is coupled in each case in exactly one of these light source structurally assigned intent optics.
  • the light sources are in the for the FIG. 3 selected representation behind the plane of the drawing and are therefore hidden by the intent optics of the primary optics.
  • the arrangement of light source and associated optical attachment corresponds to the reference to the FIG. 2 explained arrangement, but only a single front optics of FIG. 3 have the bulge shown in the figure.
  • an additional surface 61 which each of the light exit surface 16 of the associated with FIG. 2 explained bulge 23 corresponds and which serves to direct light in the overhead area. Since the bulges are each realized as elevations from the other optical attachment, the light exit surfaces 16, 61 are additional surfaces which increase the existing without such bulges 23 light exit surfaces 17 of each other intent optics. At this additional light exit surface 61 emerges light, which is directed 26 under the aperture and thus illuminates the overhead area 12, as described in more detail with reference to the FIG. 1 was explained.
  • n can also be unequal to 11 and that n depends in particular on the size of the luminous fluxes of the light sources. The larger the luminous flux of a single light source, the smaller n can be.
  • FIG. 3 also shows that the arrangement of the n light sources and their n attachment optics takes place on a mounting support having fasteners, here with recessed tabs.
  • the mounting bracket forms together with the light sources and their attachment optics a preassembled module, which can also be referred to as a complex light source.
  • This complex light source is the subject of FIGS. 3 and 4 a low beam complex light source.
  • the complex light source to frame structures of the light module and / or a diaphragm assembly and / or a secondary optics assembly can be fastened, so that there is a defined arrangement of these components with respect to each other.
  • FIG. 4 shows a view of a light-emitting front of an arrangement of attachment optics of the embodiment of the Fig. 3.
  • Figure 4 shows in detail the attachment optics 29 with the light exit surfaces 42,51,52,53,54,55,56,57,58,59,62 of the 11 individual attachment optics.
  • the light exit surfaces 42 and 62 of two attachment optics are designed so that they have additional surfaces 41 and 61 which are light exit surfaces of bulges 23 and with which light is directed under the aperture 26.
  • a central attachment optics is understood to mean an attachment optics which, when the light module is used as intended, is cut by a plane which is spanned by the optical axis of the secondary optics and by a vertical. This facilitates homogeneous illumination of the overhead area since it is wider in the horizontal direction than in the vertical direction.
  • the decentralized arrangement of two protrusions prevents the overhead light beam from being taken out of the part of the light beam of the light source illuminating the center of the light distribution. This is advantageous because in the middle of a light intensity maximum of the low beam distribution is desired.
  • At least one attachment optics a bulge which is adapted to divert a portion of the light emanating from the light source so that it passes on a second side of the diaphragm on the aperture and from the secondary optics in a second beam path in is distributed on a second side of the cut-off in the second light distribution area, this bulge is left or right of a plane that is spanned by the optical axis of the secondary optics and a vertical.
  • the additional areas 41 and 61 correspond to those associated with the FIG. 2 explained light exit surface 16.
  • these additional partial surfaces of the respective light exit surfaces of the attachment optics are below the aperture 26, while the remaining light exit surfaces 51-59 are above the aperture 26.
  • Due to the size ratios of the surfaces 41, 61 to the other light exit surfaces also results that the vast majority of the light is directed into the area above the aperture.
  • the respective proportion of light in the first approximation can be assumed to be proportional to the respective light exit surface.
  • FIG. 5 shows a view of a arranged for coupling of light back of the arrangement of attachment optics of the embodiment of the FIG. 3 ,
  • the back side is also the side through which light is coupled into the front optics.
  • the direct imaging part corresponds to the optically acting as a lens part of the attachment optics.
  • the indirect imaging part corresponds to the part of the optical attachment at whose interface additional total internal reflections occur.
  • FIG. 6 shows a side view of such a light module 40 as a further embodiment of a light module according to the invention.
  • Fig. 6 shows, in particular, beam paths 31, 32.1, 32.2 of the low beam component, a beam path 33 of the overhead light component and beam paths 101, 102, 103 of an additional component serving to produce a high beam light distribution.
  • the high beam component of compared with the subject of the FIG. 2 additional light sources 91 and attachment optics 92 generated.
  • the light sources 91 are preferably also semiconductor light sources, in particular light emitting diodes.
  • the attachment optics 92 are also preferably transparent solids with a central, acting as a lens part and side surfaces, where take place total internal internal reflections. Also the light entry surface is preferably equally divided into a central part and peripheral parts, as is the subject matter of Fig. 2 was explained. In contrast to the subject of FIG. 2 However, the auxiliary optics 92 participating in the generation of a high-light boundary located above the light-dark boundary of the second light distribution have no bulges that guide light past a different side of the diaphragm 26 than the rest of the respective optical attachment.
  • the attachment optics 92 directs all of their structurally associated light source 91 coupled light on the second side 20 of the aperture 26 over. This is illustrated by the beam paths 101, 102 and 103. In the FIG. 6 is the second side of the lower side of the panel, which also corresponds to the arrangement in a proper use of the light module. As can be concluded from the directions of these beam paths after their deflection by the secondary optics 28, this light illuminates above the cut-off line in the Fig. 1 lying areas. The intensity of the light propagating in these beam paths is substantially greater than the intensity of the overhead light propagating in the beam path 33, so that the brightness resulting from the overhead light is completely outshined by the brightness which is generated by the light sources 91.
  • FIG. 7 shows a perspective view of some components of a light module for generating a low-beam component, an overhead light component and a high-beam component.
  • the light module according to Fig. 7 based on the light module of FIG. 3 and, like this, has a low beam complex light source, a screen and a secondary optics in the form of a projection lens.
  • the explanations on FIG. 3 also for the subject of FIG. 7
  • the subject of the Fig. 7 nor an additional module, which serves as a complex light source 110 for additional light distribution.
  • the additional light distribution lies above the horizon and thus supplements the low-beam distribution, which lies substantially below the horizon, to form a high-beam distribution.
  • the complex light source 110 has, as well as the complex light source according to FIG. 3 , Fastening structures on. These are as well as the attachment structures of the object the FIG. 3 preferably shaped so that the two complex light sources can be connected to a coherent and inherently rigid assembly, so that an adjustment of the emission directions and a setting in the headlight can always be done together.
  • the complex light source can be fastened to frame structures of the light module and / or an aperture assembly and / or a secondary optics assembly with the fastening elements, so that a defined arrangement of these components results in relation to one another.
  • the modular design also allows cost-effective production, because, for example, for light modules, the only one Abblertztver whatsoever must (and an overhead light distribution, but not a high beam distribution) generate and for light modules which are also to generate a high beam distribution, the same modules in the form of the low beam complex light source, the diaphragm assembly and the secondary optics can be used.
  • FIG. 8 shows a view of a light-emitting front of an array of primary optics of the embodiment of the FIG. 7 .
  • FIGS. 6 to 8 illustrated embodiment of a light module according to the invention is characterized in that at the points where the Abbleriumt attachment optics 29 with the help of the surfaces 41 and 61, ie with the aid of the light exit surfaces of bulges of the attachment optics, light under the aperture 26, the lower edge the low beam front optics and the upper edge of the high beam auxiliary optics have a sufficient distance 130 from each other, as in the Fig. 8 is shown.
  • this condition has been satisfied by the fact that the auxiliary optics 122, 123 of the high beam assembly, which are arranged below the additional bulges 23 attachment optics of the low beam assembly, smaller than a is central attachment optics of the high beam assembly, which lies between the auxiliary optics 122, 123 of the high beam assembly.

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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)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP14160613.7A 2013-04-29 2014-03-19 Module d'éclairage de phare de véhicule automobile Active EP2799761B1 (fr)

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EP3839324A1 (fr) * 2019-12-16 2021-06-23 ZKW Group GmbH Dispositif d'éclairage pour un phare de véhicule automobile
EP3882514A4 (fr) * 2020-01-20 2022-04-06 Hasco Vision Technology Co., Ltd. Élément optique de phare, module de phare, lampe de véhicule et véhicule
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EP3495718A1 (fr) * 2017-12-05 2019-06-12 ZKW Group GmbH Dispositif de projection pour un phare de véhicule automobile
FR3075928B1 (fr) * 2017-12-22 2021-06-25 Valeo Vision Module lumineux pour projecteur de vehicule
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JP7269025B2 (ja) * 2019-02-12 2023-05-08 株式会社小糸製作所 車両用灯具
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DE102019108233A1 (de) * 2019-03-29 2020-10-01 Automotive Lighting Reutlingen Gmbh Lichtmodul für einen Kraftfahrzeugscheinwerfer mit n in einer Reihe nebeneinander angeordneten Teillichtmodulen
CN110220158B (zh) * 2019-05-20 2020-04-21 华域视觉科技(上海)有限公司 车灯用光学装置、汽车照明装置及汽车
CN110186008A (zh) * 2019-06-05 2019-08-30 华域视觉科技(上海)有限公司 车辆照明单元及车辆照明车灯
KR20210083600A (ko) * 2019-12-27 2021-07-07 에스엘 주식회사 차량용 램프
CN113124375A (zh) * 2020-01-15 2021-07-16 华域视觉科技(上海)有限公司 车辆照明装置、车灯以及车辆
CN113137585A (zh) 2020-01-20 2021-07-20 华域视觉科技(上海)有限公司 前照灯光学元件、车灯模组、车灯及车辆
EP3971471B1 (fr) * 2020-09-21 2024-01-03 ZKW Group GmbH Dispositif d'éclairage pour un projecteur de véhicule automobile permettant de créer une distribution de lumière de base comprenant un faisceau d'illumination des panneaux
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EP3040602A1 (fr) * 2013-08-29 2016-07-06 Ichikoh Industries, Ltd. Éclairage de véhicule
EP3040602A4 (fr) * 2013-08-29 2017-03-29 Ichikoh Industries, Ltd. Éclairage de véhicule
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EP3699486A1 (fr) * 2019-02-25 2020-08-26 Marelli Automotive Lighting Reutlingen (Germany) GmbH Phare pourvu d'une pluralité de sources lumineuses à semi-conducteurs et d'un champ optique primaire en une pièce
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EP2799761A3 (fr) 2016-08-31
US20140321143A1 (en) 2014-10-30
DE102013207850A1 (de) 2014-10-30
EP2799761B1 (fr) 2020-10-14
US9249943B2 (en) 2016-02-02
CN104121535A (zh) 2014-10-29

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