EP3715705A1 - Module lumineux pour un projecteur de véhicule automobile pourvu de n modules lumineux partiels agencés en une rangée - Google Patents

Module lumineux pour un projecteur de véhicule automobile pourvu de n modules lumineux partiels agencés en une rangée Download PDF

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Publication number
EP3715705A1
EP3715705A1 EP20161977.2A EP20161977A EP3715705A1 EP 3715705 A1 EP3715705 A1 EP 3715705A1 EP 20161977 A EP20161977 A EP 20161977A EP 3715705 A1 EP3715705 A1 EP 3715705A1
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EP
European Patent Office
Prior art keywords
light module
light
partial
partial light
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.)
Granted
Application number
EP20161977.2A
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German (de)
English (en)
Other versions
EP3715705B1 (fr
Inventor
Robert Leute
Stefan Arnold
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
Marelli Automotive Lighting Reutlingen Germany GmbH
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Publication of EP3715705A1 publication Critical patent/EP3715705A1/fr
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Publication of EP3715705B1 publication Critical patent/EP3715705B1/fr
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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
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • 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
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated 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
    • F21S41/265—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
    • F21S41/27—Thick 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—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
    • F21S41/36—Combinations of two or more separate reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • 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
    • 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
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • 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
    • F21W2102/20—Illuminance distribution within the emitted light
    • 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
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • Such light modules are for example from EP 3 163 155 A1 , of the DE 10 2016 125 887 A1 , of the US 6,948,836 B2 and the DE 10 2005 015 007 A1 known. This is a periodic arrangement in particular known from individual optical systems. When the motor vehicle headlight is used as intended, the individual systems are arranged next to one another in a horizontal row.
  • Light modules for a motor vehicle headlight are often implemented as projection modules in which a light distribution generated within the module and thus internal light distribution is mapped onto the road (or a measuring screen) as an external light distribution by secondary optics.
  • the secondary optics are mostly realized as projection lenses.
  • the challenge is often to use primary optics to shape the internal light distribution according to customer wishes and legal requirements and at the same time to illuminate the aperture of the projection lens in such a way that the overall efficiency is high.
  • the overall efficiency is understood to mean the proportion of the luminous flux emanating from the light source or the light sources of the light module in the luminous flux which is ultimately emitted in a solid angle which corresponds to the external light distribution.
  • the object of the present invention is to provide a light module of the type mentioned at the beginning which has improved overall efficiency .
  • the primary optics of each of the n Partial light modules set up and arranged to direct part of the light emanating from the light source of this part module past the secondary optics of this part light module onto secondary optics of a part light module closest to this part light module so that the next adjacent part light module illuminates a peripheral solid angle area with this light penetrates with the central solid angle area and which protrudes laterally over the central solid angle area.
  • this increases the aperture of the secondary optics that can be used for each light source.
  • the enlargement takes place in that more than one projection lens is illuminated with the light bundle emanating from a light source.
  • the light yield of the overall system exceeds the sum of the light yields of the individual systems.
  • the light module preferably consists of a periodic arrangement of individual optical components, projection lenses preferably being used as secondary optics.
  • Light distributions are generated on these Petzval surfaces within the partial light modules by primary optics. These are now not only imaged by a single secondary optics, but also by their next-to-one and, under certain circumstances, also Next but one adjacent projection lens.
  • the aperture that can be used for the light from one of the light sources is thereby drastically increased.
  • the periodic arrangement allows very good control over the type of image.
  • the partial light modules are optically coupled to one of the light sources by the light bundles illuminating a plurality of projection lenses and can be coordinated with one another. Analogous to the physical crystal lattice, which is defined by a periodic arrangement, the term module lattice is used in the following.
  • a preferred embodiment is characterized in that the assignment is defined in each case by a light beam which emanates from the i-th light source in the main emission direction of the i-th light source and at least touches the i-th primary optics and which does not touch any of the other n- 1 touches primary optics, and which exactly touches the i-th secondary optics and which does not touch any other of the other n-1 secondary optics.
  • the row of partial light modules is aligned horizontally in a space corresponding to the intended use.
  • n 2.
  • n is greater than or equal to 3 and that the Primary optics of each partial light module, for which the light module has a partial light module next to it, is set up and arranged to direct part of the light emanating from the light source of this partial module past the secondary optics of this partial light module onto secondary optics of a partial light module next to this partial light module, that the next-next adjacent partial light module illuminates a further peripheral solid angle area with this light, which penetrates with the peripheral solid angle area and which protrudes laterally beyond the peripheral solid angle area.
  • each partial light module illuminates the same central solid angle area as each other of the partial light modules.
  • the light module is set up to switch the light sources on and off together.
  • Another preferred embodiment is characterized in that the primary optics are each implemented as a concave mirror reflector or as a transparent solid-state reflector, as a lens or as a catadioptric optic.
  • each primary optics of a partial light module have a light-refracting or reflective area which is designed to be separated from the Light source of this partial light module to direct incident light onto a secondary optics partial area of a next adjacent partial light module.
  • At least one of the partial light modules each have a mirror screen arranged between the primary optics and the secondary optics, which has an edge that is illuminated by a light bundle in which light emanating from the light source of the at least one partial light module from the primary optics to this partial light module propagated by the secondary optics of this partial light module.
  • a further preferred embodiment is characterized in that the secondary optics are each implemented as reflective optics, total reflection optics, lenses or a combination of these alternatives.
  • each secondary optics is set up to image an area located on the primary optics side and that the areas to be imaged of secondary optics of adjacent partial light modules overlap.
  • each secondary optic is a plano-convex projection lens.
  • each secondary optic is a combination of two roller optics aligned orthogonally to one another is realized.
  • the light module has at least two rows of partial light modules, each of which is aligned horizontally in a position corresponding to the intended use in space and which are arranged offset from one another in the vertical direction.
  • the Figure 1 an exemplary embodiment of a motor vehicle headlight 10 with a light module 12.
  • the light module 12 is arranged in the interior of a housing 14, the light exit opening of which is covered by a transparent cover plate 16.
  • a typical light module 12 for a motor vehicle headlamp using projection technology consists of one or more light sources 18 and primary optics 20 (for example a reflector) that shapes the light within the light module 12.
  • a horizontal mirror screen 22 (or vertical screen) is used to generate an edge that is imaged by secondary optics 26 as a light-dark boundary of an external light distribution that is located outside of the motor vehicle headlight 10 and in front of it.
  • Figure 1 shows a vertical section through a motor vehicle headlight 10 with a light module 12.
  • the x direction corresponds to a main emission direction of the light module 12 and the motor vehicle headlight 10.
  • the y direction is parallel to a transverse axis of the motor vehicle and the z direction is parallel to a vertical axis of the motor vehicle.
  • Each partial light module 24.1 to 24.4 has the in connection with the Figure 1 described structure.
  • the number n can also differ from four. It is in any case greater than or equal to two.
  • Figure 3 shows a plan view of the arrangement from FIG Figure 2 .
  • one light source 18.1 to 18.4 is assigned to exactly one primary optics 20.1 to 20.4 and exactly one secondary optics 26.1 to 26.4.
  • Each secondary optics 26.1 to 26.4 is preferred, but not absolutely necessary, a plano-convex projection lens.
  • the light sources of the light module 12 according to the invention are preferably set up and switched to be switched on and off together.
  • Figure 4 shows a top view of a single partial light module 24.
  • the concave shape of the diaphragm edge 30 follows the shape of the Petzval surface 32 of the projection lens 34, which here serves as secondary optics 26.
  • FIG. 11 shows a top view of the partial light module 24 from FIG Figure 4 together with two exemplary beam paths 38, 40.
  • the continuous arrow represents a beam path 40 through the inner area of a partial light module 24, which belongs to this partial light module 24 due to the assignment defined above and therefore due to the this partial light module 24 associated projection lens 34 passes.
  • the arrows shown in dashed lines each represent a beam path 38 which illuminates areas of the Petzval surface further away from the axis. These areas would correspond to a wider light distribution.
  • the rays miss the aperture of the projection lens 34 they cannot contribute to the light distribution of this partial light module 24.
  • the imaging behavior of the secondary optics which is usually a projection lens, is of decisive importance for the width and intensity of the external light distribution of a projection module. If the area of sharp imaging is considered, that is to say the Petzval area 32 of a projection lens 34, the angle ⁇ to the central optical axis 36 of the projection lens 34 can be determined define how he's in Figure 4 is shown. The larger the angle at which an internal light distribution is imaged by the projection lens 34, the wider the resulting external light distribution becomes.
  • the inner light distribution is an area located on the primary optics side of a secondary optics, which is imaged by the secondary optics as an outer light distribution.
  • the inner beam path 40 must be taken into account, which is shown in FIG Figure 5 is shown as a solid arrow. Due to the limited aperture of the projection lens 34, its Petzval surface 32 cannot be illuminated as desired.
  • the solid arrows point in the Figure 5 and further figures each have a beam path 40 which intersects the Petzval surface relatively close to the axis, hits the projection lens 34 and can thus contribute to the external light distribution.
  • the dashed beam path 38 illuminates a region of the Petzval surface 32 further away from the axis, but runs outside the aperture of the projection lens 34 and thus does not contribute to the external light distribution.
  • the width of the external light distribution is severely limited by the geometry of the individual partial light module 24. This undesirable effect is amplified by the prevailing trend towards miniaturization.
  • the periodic arrangement of the same projection lenses 34.1 to 34.4 creates a physical grid, comparable to a 1-dimensional crystal.
  • the inner light distribution of a partial light module is imaged in higher orders by neighboring projection lenses, and the consideration of a single partial light module as a unit cell allows the prediction of the entire external light distribution of the module grid.
  • the Figure 6 shows in particular that in the periodic arrangement the aperture of a projection lens 34.2 of a partial light module 24.2 is also used with light from partial light modules 24.1, 24.3 next to this partial light module 24.2 and the next but one adjacent partial light modules 24.4 (dashed beam paths 38).
  • a much larger angle of incidence range is covered by the projection lens 34.2 illuminated in this way than in the case of an illumination which occurs only from the primary optics 20.2 assigned to this projection lens 34.2.
  • FIG. 13 shows a top view of the subject matter of FIG Figure 6 with optical paths that show how the light from a single light source is distributed over several secondary optics.
  • the Figure 7 shows in particular a plan view of the subject matter of FIG Figure 6 with beam paths that show how the light from a single light source is distributed over several secondary optics.
  • Figure 7 shows how from the primary optics 20.2 of the partial light module 24.2 not only the projection lens 34.2 assigned to this primary optics, but also the projection lenses 34.1, 34.3 of next adjacent partial light modules 24.1, 24.2 and a projection lens 34.4 of a next but one adjacent partial light module 24.4 are illuminated. This also applies to all partial light modules and contributes to the advantage of a considerable increase in efficiency.
  • the Figures 6 and 7th show overall how the aperture of a single lens is not only used by an associated primary lens, but also by its neighbors. At the same time, not only one aperture is available to each primary optic, but also the apertures of neighboring partial light modules, which further improves the light yield of the system. The resulting light distribution is not chaotic or characterized by scattered light.
  • FIG. 13 shows a top view of the subject matter of FIG Figure 3 with beam paths 42, 44, 46, which illustrate how an inner light distribution 48 of an individual partial light module 24.2 is imaged not only by the projection lens 34.2 of this partial light module 24.2, but also by more than one projection lens 34.3, 34.4 and other partial light modules 24.3, 24.4 .
  • the Figure 9 shows, in a highly schematic manner, external light distributions 50, 52, 54 resulting from the image, as they appear on a screen that is set up perpendicular to the main emission direction in front of the motor vehicle headlight.
  • Angular deviations from the skin radiation direction are plotted on the abscissa to the left (negative) and to the right, and on the ordinate upward (positive) and downward (negative) angular deviations of the light beam directions of the light module from the main emission direction (0 °, 0 °) are plotted.
  • the ordinate value 0 corresponds to the height of the horizon.
  • the dashed line corresponds to the cut-off line 56 of an asymmetrical light distribution.
  • In the vertical direction only the upper light distribution 50 is shown in the correct position.
  • the two other light distributions 52, 54 are shown offset vertically for the sake of better visibility. In reality, the light distributions 50, 52, 54 will be arranged vertically at the same height.
  • Each of the three outer light distributions 50, 52, 54 is each an image of the same inner light distribution 48 from Figure 8 .
  • This inner light distribution 48 is imaged at different angles by several adjacent projection lenses 34.2, 34.3, 34.4.
  • Each of the outer light distributions 50, 52, 54 corresponds to a solid angle which corresponds to an imaging order of the projection lenses 34.2, 34.3, 34.4: The uppermost solid angle corresponds to a 0th order of the imaging of the inner light distribution 48.
  • the outer mean light distribution 52 is through an image of the inner light distribution 48 of a partial light module is generated by the projection lens of a partial light module closest to this partial light module and corresponds to a 1st order.
  • the lowermost light distribution 54 is generated by an image of the inner light distribution 48 of a partial light module through the projection lens of a partial light module next but one next to this partial light module and corresponds to a 2nd order.
  • the solid angles of these images partially penetrate (overlap) one another, which leads to an overlap of the outer light distributions 50, 52, 54 in the horizontal direction and to a desired broadening of the light distribution in the horizontal direction.
  • the left-hand widening shown here also results in a right-hand widening, because the principle naturally also works symmetrically on the other side.
  • FIGS 8 and 9 show in particular an embodiment in which the primary optics 20.2 of each partial light module 24.2, to which the light module has a partial light module 24.4 next to it, is set up and arranged to pass part of the light emanating from the light source 18.2 of this partial light module 24.2 past the secondary optics 26.2 of this partial light module 24.2 onto a secondary optic 26.4 of a partial light module 24.4 adjacent to this partial light module 24.2 so that the next but next adjacent partial light module 24.4 illuminates a further peripheral solid angle area with this light, which penetrates the peripheral solid angle area and which protrudes laterally beyond the peripheral solid angle area.
  • Each secondary lens is set up to image an area on the primary lens side. The areas of secondary optics of neighboring partial light modules to be imaged overlap.
  • FIGS. 8 and 9 thus illustrate in particular the principle of higher-order images.
  • An inner light distribution of a partial light module is mapped into different angular ranges by different projection lenses of different partial light modules.
  • a horizontal offset is created which is exactly the focal lengths of the projection lenses and the Periodicity of the module grating is defined and can therefore be specifically designed in the construction of the light module.
  • the multiple imaging in higher orders significantly improves both the efficiency and the achievable horizontal width of the resulting external light distribution.
  • the inner area of the partial light modules is not only characterized by the absence of separating screens (as found in some partial high beam modules), but segments of the primary optics are also designed to direct light explicitly into neighboring projection lenses of neighboring partial light modules.
  • segments 58.1 to 58.4 of the primary optics 20.1 to 20.4 are marked, which are designed for the higher orders. These segments can merge into the rest of the primary optics continuously and without an edge and thus continuously differentiable.
  • the segments are designed for the stated purpose to the extent that they are set up for a targeted deflection of light from a light source of a partial light module onto projection lenses of the next adjacent or next but one adjacent partial light module.
  • Figure 11 shows a vertical section of a partial light module from the Figure 10 in a vertical section.
  • the segment 58 of a primary optics 20, which appears as a triangle in this illustration, is set up to project projection lenses adjacent to the projection lens 34 shown (cf. Figure 8 ) to illuminate and thus generate higher-order images.
  • the Figure 12 shows an embodiment of a light module 12 according to the invention, in which the partial light modules have multi-part secondary optics 26.
  • the secondary optics 26 of each partial light module 24 is composed here of two roller optics 60, 62.
  • the axes of the roller optics are perpendicular to each other.
  • Figure 13 shows an embodiment in which the secondary optics 26 are reflective secondary optics 64, in particular half-shell reflectors.
  • the secondary optics 26 are reflective secondary optics 64, in particular half-shell reflectors.
  • transparent solid-state reflectors can also be used, which have interfaces at which total internal reflections occur.
  • the secondary optics can each be implemented as reflective optics, total reflection optics, lenses or a combination of these alternatives.
  • the secondary optics can consist of several optical components.
  • the primary optics can also be reflective optics, total reflection optics, lenses or combinations thereof be realized.
  • Figure 14 shows an embodiment of a light module 12 according to the invention with partial light modules 24 of a light module arranged in rows and columns regularly and thus in a matrix-like manner.
  • the module grid can therefore have a multi-dimensional structure.
  • the total number n of coupled partial light modules of a light module is not fixed to a specific value, but is at least two.

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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)
EP20161977.2A 2019-03-29 2020-03-10 Module lumineux pour un projecteur de véhicule automobile pourvu de n modules lumineux partiels agencés en une rangée Active EP3715705B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019108233.1A DE102019108233A1 (de) 2019-03-29 2019-03-29 Lichtmodul für einen Kraftfahrzeugscheinwerfer mit n in einer Reihe nebeneinander angeordneten Teillichtmodulen

Publications (2)

Publication Number Publication Date
EP3715705A1 true EP3715705A1 (fr) 2020-09-30
EP3715705B1 EP3715705B1 (fr) 2022-12-21

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EP20161977.2A Active EP3715705B1 (fr) 2019-03-29 2020-03-10 Module lumineux pour un projecteur de véhicule automobile pourvu de n modules lumineux partiels agencés en une rangée

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EP (1) EP3715705B1 (fr)
CN (1) CN111750328B (fr)
DE (1) DE102019108233A1 (fr)

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DE102019108233A1 (de) 2020-10-01
CN111750328A (zh) 2020-10-09
EP3715705B1 (fr) 2022-12-21
CN111750328B (zh) 2024-05-31

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