CN111750328B

CN111750328B - Light module for a motor vehicle headlight with n sub-light modules arranged side by side in a row

Info

Publication number: CN111750328B
Application number: CN202010204289.4A
Authority: CN
Inventors: R·洛伊特; S·阿诺德
Original assignee: Automotive Lighting Reutlingen GmbH
Current assignee: Marelli Automotive Lighting Reutlingen Germany GmbH
Priority date: 2019-03-29
Filing date: 2020-03-21
Publication date: 2024-05-31
Anticipated expiration: 2040-03-21
Also published as: EP3715705B1; DE102019108233A1; CN111750328A; EP3715705A1

Abstract

A light module for a motor vehicle headlight is proposed, which has n sub-light modules arranged side by side in a row, wherein each of the i=1 to n sub-light modules has an i-th light source, an i-th primary optical element assigned to the i-th light source and an i-th secondary optical element assigned to the i-th light source, wherein each sub-light module is arranged to illuminate a central solid angle range. The light module is characterized in that the primary optical element of each of the n sub-light modules is arranged and disposed such that a portion of the light emitted from the light source of the sub-light module passes through the secondary optical element of the sub-light module and is directed thereby to the secondary optical element of the next adjacent sub-light module to the sub-light module, such that the next adjacent sub-light module illuminates a peripheral solid angle range with light, which peripheral solid angle range is realized by the central solid angle range and simultaneously extends laterally over the central solid angle range.

Description

Light module for a motor vehicle headlight with n sub-light modules arranged side by side in a row

Technical Field

The invention relates to a light module for a motor vehicle headlight, comprising n partial light modules arranged in a row side by side, wherein each of the i=1 to n partial light modules comprises an i-th light source, an i-th primary optical element associated with the i-th light source, and an i-th secondary optical element associated with the i-th light source, wherein each partial light module is configured to illuminate a central solid angle range. Such light modules are known, for example, from EP 3 163 155 A1, DE 10 2016 125 887 A1, US 6,948,836B2 and DE 10 2005 015 007 A1. The periodic arrangement of individual optical systems is thus known in particular. The individual systems are arranged side by side in a horizontal row when the motor vehicle headlight is used as intended.

Background

The light module for motor vehicle headlamps is usually realized as a projection module, wherein the light distribution generated within the module and thus inside is imaged as an external light distribution onto the road (or measuring screen) by means of a secondary optical element. The secondary optical element is mostly implemented as a projection lens. The challenge is generally to shape the internal light distribution and simultaneously illuminate the aperture of the projection lens by the primary optical element accordingly to customer expectations and legal requirements, resulting in an overall efficiency. The overall efficiency is understood here to be the fraction of the luminous flux emitted from the light source or light sources of the light module in the luminous flux which ultimately radiates at a solid angle corresponding to the external light distribution.

Disclosure of Invention

The object of the invention is to provide an optical module of the type mentioned at the outset, which has an improved overall efficiency.

This object is achieved by the light module according to the invention. Whereby the primary optical element of each of the n sub-optical modules is arranged and disposed such that a portion of the light emitted from the light source of that sub-optical module is directed through the secondary optical element of that sub-optical module and thereby towards the secondary optical element of the next adjacent sub-optical module to the sub-optical module, such that the next adjacent sub-optical module illuminates with light a peripheral solid angle range which is realized by the central solid angle range and which at the same time laterally protrudes over the central solid angle range.

Thereby, the aperture available for each light source of the secondary optical element is increased in combination with the features of the preamble. The enlargement is achieved by illuminating more than one projection lens with a light beam emitted from a light source. The beneficial result of the increased aperture is that the overall system light efficiency exceeds the sum of the individual systems light efficiency.

The light module is preferably composed of individual optical components arranged periodically, wherein preferably a projection lens is used as the secondary optical element. So-called petzval surface hereinOr the areas of clear imaging with the respective secondary optic projection lenses intersect. Light distribution is generated by the primary optical element on the petzval surface within the sub-optical module. The light distribution is then imaged not only by the individual secondary optical elements, but also by its next adjacent and possibly spatially adjacent projection lenses. Thereby rapidly increasing the aperture of light available to each light source. The periodic arrangement enables particularly good control via such imaging. The sub-light modules are optically coupled by the light beams of each light source respectively illuminating a plurality of projection lenses and can be coordinated with each other. Similar to the physical lattice defined by the periodic arrangement, the term modular lattice is used below.

A preferred embodiment is characterized in that the respective correspondence is defined by a light beam which is emitted by the ith light source in the main radiation direction of the ith light source and which touches at least the ith primary optical element without touching the other remaining n-1 primary optical elements and which touches just at least the ith secondary optical element without touching the other remaining n-1 secondary optical elements.

It is also preferred that a row of sub-light modules is oriented horizontally in space in the position of intended use.

It is also preferred that n=2.

Another preferred embodiment is characterized in that n is greater than or equal to 3, the primary optical element of each sub-optical module being provided and arranged in the case of an optical module having a sub-optical module adjacent to it at a distance from each other, such that a part of the light emitted from the light source of the sub-optical module passes through the secondary optical element of the sub-optical module and is thus directed to the secondary optical element of the sub-optical module adjacent to the sub-optical module at a distance from each other, such that the sub-optical module adjacent to the distance from each other illuminates with light a further peripheral solid angle range which is realized by the peripheral solid angle range and which extends laterally beyond the peripheral solid angle range.

It is also preferred that each sub-light module illuminates the same central solid angle range as each other sub-light module.

It is also preferred that the light module is arranged to switch a plurality of light sources on and off in common.

A further preferred embodiment is characterized in that the primary optical element is realized as a concave mirror reflector or as a transparent solid reflector, a lens or a catadioptric optical element, respectively.

It is also preferred that each primary optical element of one sub-optical module has a region for refracting or reflecting light, which region is arranged to direct light incident from the light source of that sub-optical module towards a secondary optical element partial region of the next adjacent sub-optical module.

It is also preferred that the at least one sub-light module has a mirror plate arranged between the primary and the secondary optical element, the mirror plate having an edge, which is illuminated by the light beam, in which light emitted from the light source of the at least one sub-light module propagates from the primary optical element of the sub-light module to the secondary optical element of the sub-light module.

A further preferred embodiment is characterized in that the secondary optical element is realized as a reflective optical element, a total reflection optical element, a lens or a combination of these alternatives, respectively.

It is also preferable that each secondary optical element is arranged to image a region on the primary optical element side, and regions to be imaged of secondary optical elements of adjacent sub-optical modules intersect.

It is also preferred that each secondary optical element is a plano-convex projection lens.

A further preferred embodiment is characterized in that each secondary optical element is realized as a combination of two mutually orthogonal roller-like optical elements.

It is also preferred that the light module has at least two rows of sub-light modules, wherein each row is oriented horizontally in space and is arranged offset from each other in the vertical direction in the position of intended use.

Other advantages will be seen from the following description, attached drawings. It is understood that the features mentioned above and yet to be explained below can be applied not only in the respectively given combination but also in other combinations or alone without leaving the scope of the invention.

Drawings

Embodiments of the invention are illustrated in the accompanying drawings and described in more detail in the following description.

Here, respectively, are shown in a schematic manner:

Fig. 1 shows an embodiment of a motor vehicle headlight with a light module;

fig. 2 shows a perspective view of an assembly of n=4 sub-optical modules;

FIG. 3 shows a top view of the assembly of FIG. 2;

FIG. 4 shows a top view of a single sub-optical module;

FIG. 5 shows a top view of the sub-optical module of FIG. 4 with two exemplary optical paths;

Fig. 6 shows a top view of an assembly of n=4 sub-optical modules and an optical path showing how the light of a plurality of light sources illuminates the respective projection lenses;

FIG. 7 shows a top view of the object of FIG. 6 and an optical path showing how light from a single light source is distributed over multiple secondary optical elements;

FIG. 8 shows a top view of the object of FIG. 6 and an optical path showing how the internal light distribution of an individual sub-optical module is imaged by more than one of the other projection lenses;

Fig. 9 shows the light distribution resulting from the imaging more schematically;

fig. 10 shows a top view of an assembly of n=4 sub-light modules and a marked area of the primary optical element, which area enables the light of the light source of a sub-light module to be deflected specifically onto the projection lens of the next adjacent or spatially adjacent sub-light module;

Fig. 11 shows a vertical section of the sub-optical module in fig. 10;

fig. 12 shows a design of an optical module according to the invention, wherein the sub-optical module has a multi-piece secondary optical element;

Fig. 13 shows a design of an optical module according to the invention, wherein the secondary optical element is a reflective secondary optical element; and

Fig. 14 shows an embodiment of a light module according to the invention with sub-light modules arranged regularly and in a matrix in rows and columns.

Detailed Description

Specifically, fig. 1 shows an embodiment of a motor vehicle headlamp 10 having an optical module 12. The light module 12 is arranged inside a housing 14, the light outlet of which is covered by a transparent cover 16.

A common light module 12 for motor vehicle headlamps in projection technology is composed of one or more light sources 18 and a primary optical element 20 (e.g. a reflector) which forms light within the light module 12. The horizontal mirror plate (Spiegelblende) 22 (or the vertical panel (Blende)) serves to produce an edge, which is imaged by the secondary optics 26 as a bright-dark boundary of the external light distribution, which is located outside the motor vehicle headlight 10 and in front of it. Fig. 1 shows in particular a vertical section through a motor vehicle headlight 10 and an optical module 12. The x-direction corresponds to the main radiation direction of the light module 12 and the motor vehicle headlight 10. The y-direction is parallel to the transverse axis of the vehicle and the z-direction is parallel to the vertical axis of the vehicle.

Fig. 2 shows an assembly of n=4 sub-optical modules 24.1 to 24.4. Each sub-optical module 24.1 to 24.4 has the configuration described in connection with fig. 1. n=4 sub-optical modules 24.1 to 24.4 are arranged in a row in the y-direction. In certain applications the y-direction is parallel to the horizontal line (Horizont). The assembly is periodic. The optical systems (primary and secondary optical elements) of the n=4 sub-optical modules 24.1 to 24.4 are not structurally separate from each other and can influence each other. The value n may also be different from 4. In any case this number is greater than or equal to 2.

Fig. 3 shows a top view of the assembly of fig. 2. The light sources 18.1 to 18.4 are assigned to the primary optics 20.1 to 20.4 and to the secondary optics 26.1 to 26.4, respectively. The correspondence is defined here by the light beams 28, which emerge from the light sources in the main radiation direction of the ith light source with the numbers i=1 to n and which at least impinge on the ith primary optical element and which do not impinge on the other remaining n-1 primary optical elements and which at least just impinge on the ith secondary optical element and which do not impinge on the other remaining n-1 secondary optical elements, respectively. Each secondary optical element 26.1 to 26.4 is preferably, but not necessarily, a plano-convex projection lens.

Unlike sub-high beam modules, in which the light sources are connected to a circuit board so that they can be switched on and off or dimmed independently of each other, the light sources of the light module 12 according to the invention are preferably arranged and connected so as to be switched on and off jointly.

Fig. 4 shows a top view of an individual sub-optical module 24. The concave shape of the panel edge 30 follows the petzval surface 32 of the projection lens 34, which serves here as the secondary optical element 26. The greater the angle α relative to the central optical axis 36, the wider the imaging by the projection lens 34.

Fig. 5 shows a top view of the sub-optical module 24 of fig. 4 with two exemplary optical paths 38, 40. The continuously drawn arrows here represent, as in the other figures, the light path 40 through the inner region of the sub-light module 24, which, owing to the correspondence described above, belongs to this sub-light module 24 and thus passes through the projection lens 34 belonging to this sub-light module 24. But not all areas of the petzval surface are illuminated equally depending on the aperture of the projection lens 34. The arrows shown in dotted lines here represent the light paths 38, which illuminate the regions of the petzval surface that are remote from the axis, as in the other figures. This area corresponds to a wider light distribution. But because the beam misses the aperture of the projection lens 34, the beam is not available for the light distribution of the sub-light module 24.

The imaging properties of the secondary optical element of the projection lens are of decisive importance for the width and intensity of the light distribution outside the projection module. If a clearly imaged surface, i.e. the petzval surface 32 of the projection lens 34 is involved, an angle α with respect to the central optical axis 36 of the projection lens 34 is defined as shown in fig. 4. The larger the angle, the wider the resulting external light distribution, at which the internal light distribution is imaged by the projection lens 34. The internal light distribution is the region of the secondary optical element on the primary light source element side, which region constitutes the external light distribution by the secondary optical element. However, for the projection lens 34 to emit, an internal light path 40 must be considered, which is shown in fig. 5 as a continuous arrow. The petzval surface 32 thereof is not arbitrarily illuminated by the limited aperture of the projection lens 34. The continuous arrows in fig. 5 and in the other figures each show a light path 40 which intersects the petzval surface relatively close to the axis, meets the projection lens 34 and thus can contribute to the external light distribution. While the light path 38 of the dotted line illuminates the region of the petzval surface 32 remote from the axis, but extends outside the aperture of the projection lens 34 and is therefore not used for external light distribution.

As an undesired consequence, the width of the external light distribution is greatly limited by the geometry of the individual sub-light modules 24. This undesirable effect is amplified due to the trend of dominant miniaturization.

With reference to fig. 6 and 7, it is explained below how the undesirable limitations are overcome by combining a plurality of sub-optical modules 24 in a periodic lattice arrangement.

Fig. 6 shows a top view of an assembly of n=4 sub-optical modules 24.1 to 24.4 and the optical paths 38, 40, which show how the light of the plurality of light sources 18.1 to 18.4 illuminate the respective projection lenses 34.1 to 34.4. A physical lattice is created by periodically arranging the same projection lenses 34.1 to 34.4, similar to a 1-dimensional crystal. The light distribution inside the sub-light modules is imaged in higher order by adjacent projection lenses, and the individual sub-light modules are regarded as basic units capable of predicting the entire external light distribution of the module lattice. Fig. 6 shows in particular that, in the case of a periodic arrangement, the aperture of the projection lens 34.2 of the sub-light module 24.2 is also used with the light of the sub-light module 24.1, 24.3 next adjacent to this sub-light module 24.2 and the sub-light module 24.4 next adjacent to the spacer (light path 38 of the dotted line). The projection lens 34.2 illuminated by this covers a much larger angle of incidence than when illuminated by the primary optical element 20.2 provided with this projection lens 34.2 alone.

Fig. 7 shows a top view of the object of fig. 6 and the light path showing how the light of a single light source is distributed over a plurality of secondary optical elements.

Fig. 7 shows, in particular, a top view of the object of fig. 6 and the light path, which shows how the light of the individual light sources is distributed over a plurality of secondary optical elements.

Fig. 7 shows how the primary optical element 20.2 of the sub-light module 24.2 illuminates not only the projection lens 34.2 provided for the primary optical element, but additionally the projection lenses 34.1, 34.3 of the next adjacent sub-light module 24.1, 24.3 and the projection lens 34.4 of the spacer adjacent sub-light module 24.4. This applies similarly to all sub-light modules and contributes to the advantage of significant utility improvement.

Fig. 6 and 7 generally show that the aperture of an individual lens is used not only by the corresponding primary optical element, but also by its neighboring primary optical element. At the same time, each primary optical element uses not only one aperture, but also the apertures of adjacent sub-light modules, which further improves the light efficiency of the system.

The resulting light distribution is not cluttered or scattered.

Fig. 8 shows a top view of the object of fig. 3 and the light paths 42, 44, 46, which show that the light distribution 48 inside the individual sub-light modules 24.2 is imaged not only by the projection lens 34.2 of the sub-light module 24.2, but additionally by more than one projection lens 34.3, 34.4 of the other sub-light modules 24.3, 24.4.

Fig. 9 shows, in a clearly schematic manner, how the external light distributions 50, 52, 54 resulting from the imaging are arranged on a screen which is formed in front of the motor vehicle headlight perpendicularly to the main radiation direction. The angular deviation from the main radiation direction is plotted on the abscissa to the left (negative) and to the right and the angular deviation of the light radiation direction of the light module from the main radiation direction (0 ° ) is plotted on the ordinate to the up (positive) and down (negative). The ordinate value 0 corresponds to the height of the horizontal line. The line of the dotted line corresponds to the bright-dark boundary 56 of the asymmetric light distribution. Only the upper light distribution 50 is depicted positionally correctly in the vertical direction. The other two light distributions 52, 54 are shown vertically offset for clarity. In practice the light distributions 50, 52, 54 are arranged vertically at equal heights.

Each of the three outer light distributions 50, 52, 54 is an image of its inner light distribution 48 in fig. 8, respectively. The internal light distribution 48 is imaged at different angles by a plurality of adjacent projection lenses 34.2, 34.3, 34.4. Each of the external light distributions 50, 52, 54 corresponds to a solid angle corresponding to the imaging order of the projection lenses 34.2, 34.3, 34.4: the uppermost solid angle corresponds to imaging of the 0 order of the internal light distribution 48. The outer middle light distribution 52 is produced by the inner light distribution 48 of the sub-light module by imaging the projection lens of the sub-light module next adjacent to the sub-light module and corresponds to the 1 st order. The lowest light distribution 54 is produced by imaging the light distribution 48 of the interior of the sub-light module by the projection lens of the sub-light module adjacent to the sub-light module at a distance therefrom and corresponds to the 2 nd order. The solid angle of the imaging partly penetrates (overlaps), which causes the external light distributions 50, 52, 54 to overlap in the horizontal direction and causes the light distribution to desirably widen in the horizontal direction. In the same way as the widening on the left as shown in fig. 9, a widening on the right is also obtained, since this principle naturally also acts symmetrically on the other side.

Fig. 8 and 9 show, in particular, a design in which the primary optical element 20.2 of each sub-optical module 24.2 is provided and arranged in the case of an optical module having a sub-optical module 24.4 adjacent to its spacing, such that a part of the light emitted from the light source 18.2 of the sub-optical module 24.2 passes through the secondary optical element 26.2 of the sub-optical module 24.2 and is thus directed to the secondary optical element 26.4 of the sub-optical module 24.4 adjacent to the sub-optical module 24.2, such that the sub-optical module 24.4 adjacent to the spacing illuminates a further peripheral solid angle range with light, which is realized by the peripheral solid angle range and which extends laterally over the peripheral solid angle range.

In this case, each sub-light module 24.I preferably illuminates the same central solid angle range as each other sub-light module, i=1 to n. Each secondary optical element is arranged to form a region on the primary optical element side. The regions to be formed of the sub-optical modules adjacent to the secondary optical element intersect.

Fig. 8 and 9 illustrate the principle of higher order imaging, especially simultaneously. The light distribution inside the sub-light modules is imaged in different angular ranges by different projection lenses of the different sub-light modules. A horizontal offset occurs, which is precisely defined by the focal length of the projection lens and the periodicity of the module lattice, and can therefore be specifically designed when constructing the optical module. When the sub-light modules are arranged along the horizontal line, no dislocation exists in the vertical direction. The utility of the resulting external light distribution and the achievable horizontal width are significantly improved by imaging multiple times at higher orders.

Accordingly, the inner region of the sub-optical module is not only characterized by the avoidance of separate panels (as is present in some sub-high beam modules), but also the sections of the primary optical element are arranged such that the light is deflected precisely into the adjacent projection lenses of the adjacent sub-optical modules.

In fig. 10, the sections 58.1 to 58.4 of the primary optical elements 20.1 to 20.4 are marked, which are designed to be higher order. The segments can be continuously and without edges and can be continuously differentiated into the remaining primary optical elements.

In this connection, the segments are designed according to the object in such a way that they point to the projection lens of the next adjacent or at-a-distance adjacent sub-light module in order to deflect the light of the light source of the sub-light module in a targeted manner.

Fig. 11 shows a vertical section of the sub-optical module in fig. 10 in a vertical section. The section 58 of the primary optical element 20, which appears as a triangle in this illustration, is provided to illuminate a projection lens (see fig. 8) adjacent to the illustrated projection lens 34 and thereby produce higher-order imaging.

Fig. 12 shows a design of the optical module 12 according to the invention, in which the sub-optical module has a multi-part secondary optical element 26. The secondary optical element 26 of each sub-optical module 24 is composed of two roller-like optical elements (Walzenoptiken) 60, 62. The axes of the roller-like optical elements are here located transversely to one another.

Fig. 13 shows a design in which the secondary optical element 26 is a reflective secondary optical element 64, in particular a half-shell reflector. Instead of a mirror-coated half-shell reflector, a transparent solid reflector is also conceivable, which has an interface at which total internal reflection occurs.

It is generally the case that the secondary optical element may be implemented as a reflective optical element, a total reflection optical element, a lens or a combination of these alternatives, respectively, as illustrated in fig. 13. The secondary optical element may be composed of a plurality of optical members. The primary optical element may also be implemented as a reflective optical element, a total reflection optical element, a lens, or a combination thereof.

Fig. 14 shows a design of the light module 12 according to the invention with sub-light modules 24 of the light module arranged in rows and columns regularly and in a matrix. The modular lattice can thus be constructed in a multi-dimensional manner. The total number n of coupled sub-optical modules of an optical module is not determined to a specific value, but is at least two.

Within the interior of the sub-light modules there may be a horizontal, vertical or no panel for creating a light-dark boundary (see fig. 1, panel 22).

Claims

1. Light module (12) for a motor vehicle headlight (10), having n sub-light modules (24.1, 24.2, 24.3, 24.4) arranged side by side in a row, wherein each of the i-th sub-light modules of i = 1 to n sub-light modules has an i-th light source (18.1, 18.2, 18.3, 18.4), an i-th primary optical element (20.1, 20.2, 20.3, 20.4) assigned to the i-th light source and an i-th secondary optical element (26.1, 26.2, 26.3, 26.4) assigned to the i-th light source, wherein each sub-light module is arranged to illuminate a central solid angle range, characterized in that the primary optical element of each of the n sub-light modules (24.2) is arranged and arranged such that a portion of the light emitted from the light source (18.2) of the sub-light module (24.2) passes through the secondary optical element (26.2) of the sub-light module (24.2) to thereby illuminate the central solid angle range (24.3) with the peripheral solid angle of the sub-light module (24.2) at the same time as the central solid angle range (24.3) is reached by the adjacent solid angle range.

2. The light module (12) according to claim 1, characterized in that the correspondence is defined by a light beam (28) which is emitted by the ith light source in the main radiation direction of the ith light source and which touches at least the ith primary optical element without touching the other remaining n-1 primary optical elements and which touches just at least the ith secondary optical element without touching the other remaining n-1 secondary optical elements, respectively.

3. The light module (12) according to claim 1, characterized in that the row of sub-light modules is oriented horizontally in space in the position of intended use.

4. A light module (12) according to any one of claims 1 to 3, characterized in that n = 2.

5. A light module according to any one of claims 1 to 3, characterized in that n is greater than or equal to 3 and that the primary optical element (20.2) of each sub-light module (24.2) is provided and arranged in the case of a light module (12) having a sub-light module (24.4) adjacent to it at a distance, such that a part of the light emitted from the light source (18.2) of the sub-light module passes through the secondary optical element (26.2) of the sub-light module and is directed thereby towards the secondary optical element (26.4) of the sub-light module (24.4) adjacent to the sub-light module at a distance such that the sub-light module adjacent to the distance illuminates with light a further peripheral solid angle range, which is realized by the peripheral solid angle range and at the same time protrudes laterally over the peripheral solid angle range.

6. A light module (12) according to any of claims 1 to 3, characterized in that each sub-light module (24.1, 24.2, 24.3, 24.4) illuminates the same central solid angle range as each other sub-light module.

7. A light module (12) according to any of claims 1 to 3, characterized in that the light module (12) is arranged to jointly switch a plurality of light sources (18.1, 18.2, 18.3, 18.4) on and off.

8. A light module (12) according to any of claims 1 to 3, characterized in that the primary optical element (20.1, 20.2, 20.3, 20.4) is realized as a concave mirror reflector or a transparent solid reflector, lens or a catadioptric optical element, respectively.

9. A light module (12) according to any one of claims 1 to 3, characterized in that each primary optical element (20.1, 20.2, 20.3, 20.4) of one sub-light module (24.1, 24.2, 24.3, 24.4) has a section (58.1, 58.2, 58.3, 58.4) for refracting or reflecting light, said section being arranged for directing light entering from a light source of the sub-light module towards a secondary optical element of a next adjacent sub-light module and/or to a secondary optical element of a spacer adjacent sub-light module.

10. A light module (12) according to any one of claims 1 to 3, characterized in that at least one sub-light module (24. I) has a mirror plate (22) arranged between the primary and the secondary optical element, respectively, the mirror plate having an edge, which edge is illuminated by the light beam, wherein light emitted from the light source of at least one sub-light module propagates from the primary optical element of the sub-light module to the secondary optical element of the sub-light module.

11. A light module (12) according to any of claims 1 to 3, characterized in that the secondary optical element is realized as a reflective optical element, a total reflection optical element, a lens or a combination of these alternatives, respectively.

12. The light module (12) according to claim 11, characterized in that each secondary optical element is arranged to image a region on the primary optical element side and that the regions to be imaged of the secondary optical elements of adjacent sub-light modules intersect.

13. The light module (12) of claim 11 wherein each secondary optical element is a plano-convex projection lens.

14. The light module (12) according to claim 11, characterized in that each secondary optical element is realized as a combination of two mutually orthogonal roller-like optical elements.

15. A light module (12) according to any one of claims 1 to 3, characterized in that the light module has at least two rows of sub-light modules, wherein each row is oriented horizontally in space and is arranged offset from each other in the vertical direction in the position of intended use.