Control device, system and method for generating a glare-free high beam of a vehicle

Abstract

A control device (3) for generating glare-free high beams by means of a headlight assembly (4) of a vehicle (50) is proposed. The control device (3) comprises a processor (10), a memory unit (20) for storing data and machine-readable instructions for the processor (10), and an interface (30). The interface (30) is configured to receive sensor data from a sensor assembly (2) for detecting another vehicle (60) exposed to a risk of glare from the headlight assembly (4) and to output control signals for controlling the headlight assembly (4).The memory unit (20) contains instructions for the processor (10) to evaluate the sensor data received from the sensor (2) to determine the current position of the detected vehicle (60) and the current road course, and, based on the current position of the detected vehicle and the current road course, to determine a base width of a shadow area required to avoid direct glare to the detected vehicle (60) in a headlight beam field, as well as at least one offset to extend the shadow area to avoid lateral glare to the detected vehicle (60), and to control the headlight system (4) in such a way that a shadow area is created in the headlight beam field to prevent glare to the detected vehicle (60), the width of which essentially corresponds to the base width increased by the at least one offset.

Description

The present disclosure relates generally to methods of controlling headlights. More specifically, the present disclosure relates to a control device, a system, and a method for generating an antiglare high beam using a head lamp of a vehicle.Vehicle headlights, in particular with a segmented high beam, for generating an antiglare high beam are known. If road users are detected, for example, by means of the vehicle sensor system in the high beam region of the headlight light field, specific segments of the headlight can be deactivated in order to generate one or more shadow regions in order to deblend the detected road users. Because of system tolerances and / or system latencies, it may happen that a road user is not completely blocked by the shadow regions in the headlight remote light. In order to ensure reliable masking, in particular despite system tolerances and system latencies, the shadow regions are dimensioned extra large or with reserve, which can lead to impairment of the overall performance of the headlights.An object of the embodiments of the present disclosure is to provide a control device, a system, and a method for generating an antiglare high beam, which enable both reliable anti-glare and high headlight performance.To achieve this object, according to a first aspect, a control device for generating an antiglare high beam by means of a headlight system of a vehicle is provided. The headlight system can be designed in particular as a matrix headlight for generating a segmented high beam. The control device includes a processor, a storage unit for storing data and machine readable instructions for the processor, and an interface.The interface is designed to receive from a sensor system sensor data for detecting another vehicle or object or road user, in particular a vehicle driving ahead and / or approaching vehicle, which is exposed to a glare risk by the headlight system. The sensor system can in particular comprise one or more cameras and be designed to detect other vehicles, in particular using the headlights or tail lamps. The interface is furthermore designed to output control signals or control commands for controlling the headlight system.The memory unit contains the instructions for the processor to evaluate the data received from the sensor system for ascertaining a current positioning of a detected vehicle and for ascertaining a current road profile. In this context, positioning means both a position or a location and an orientation of the detected vehicle. The position and the orientation can be determined in particular in a coordinate system or sensor system fixed to the detecting vehicle, i.e. to the vehicle having the control device and the sensor system, or ego vehicle. The course of the road is characterized by geometric properties of the road or roadway on which the road users are located. The orientation or oblique position of the object can be established in particular using the ascertained / detected road profile and / or the own trajectory and or additionally the relative movement between ego vehicle and the detected vehicle or detected object. If, for example, both vehicles are in a curve situation, the trajectory of their own reflects the curve situation, although the object azimuth angle may not change or hardly change.The memory unit further contains instructions for the processor, based on the current positioning of the detected vehicle and on the current road profile, to determine a base width of a shadow region in a headlight far-light field required to avoid direct glare to the detected vehicle. The width of a shadow region in the headlight high beam light can be specified or defined in particular in angular coordinates, in particular by a horizontal opening angle of the corresponding high beam shadow in the headlight high beam light field.The memory unit further contains instructions for the processor to determine at least one offset or a horizontal offset angle for expanding the shadow region in order to avoid lateral glare, in particular lateral mirror glare and / or lateral window glare, of the detected vehicle, and to actuate the headlight system in such a way that a shadow region is produced in the headlight far-light field for dimming the detected vehicle, the width of which shadow region corresponds substantially to the base width increased by the at least one offset.The width of the resulting shadow region is thus composed of the base width and the offset. In this case, both the positioning of the detected vehicle and the course of the road are taken into account. Depending on the positioning of the detected vehicle, in particular in the coordinate system of the sensor system, the proportion of the offset can vary in the total width of the resulting shadow region. If, for example, a vehicle detected by the sensor system is driving in front of the ego vehicle, the risk of side glare is reduced and the at least one offset can be reduced to a minimum. Shadow regions of an antiglare high beam can thus be more adapted to the correct size in situ, so that other road users are not disturbed, for example, by mirror glare, without having to make the shadow regions larger in principle.By determining the offset and by expanding the base width by the determined offset, the width of the resulting shadow region can be automatically adjusted to the required minimum size, whereby unnecessarily large shadow regions can be avoided.The storage unit may include instructions for the processor to acquire the current positioning of the detected vehicle from a current distance and a current azimuth angle. The distance can be specified in particular as the distance between the geometric center of the detected vehicle and the zero point of the coordinate system of the sensor system. The azimuth angle can be specified in particular as a horizontal angle with respect to a zero axis directed along the direction of travel in the coordinate system of the sensor system. On the basis of the distance and the azimuth angle, in particular with respect to the coordinate system of the sensor system, the positioning of the detected vehicle can be described in a simple manner.The memory unit may include instructions for the processor to acquire the current road shape from a current curve direction and / or curve curvature. The curve situation, in particular the curve direction or the curve curvature, influences the orientation or oblique position of the objects detected by the sensor system or camera. The change in the oblique position also changes the horizontal opening angle of a shadow region in the headlight far-light field which is required to avoid lateral glare. By taking account of the curve curvature, the shadow width of the shadow region during curve passes can be further improved.A look-up table may be stored in the memory unit, which look-up table establishes a relationship between the position of the detected vehicle and the offset. On the basis of the stored relationship, required offsets can be determined in real time on the basis of the current distance and the current azimuth angle.The offset values in the look-up table can be stored with the proviso that, in the case of an oblique position of the vehicle detected by the sensor system, pane regions of the detected vehicle, in particular a side facing the sensor system or the camera, are substantially completely detected by the at least one offset or lie in the offset region. By substantially completely detecting the window regions of the vehicle by the offset, lateral glare to the detected vehicle or its occupant can be reliably prevented.In some exemplary embodiments, offsets on both sides are stored in the look-up table in a small angle range in order to avoid side mirror glare. For example, the side mirrors of a vehicle driving ahead can be detected at an azimuth angle of approximately 0° by a left offset and by a right offset, so that no side mirror glare of the detected vehicle by the headlight high beam can take place.In some exemplary embodiments, the memory unit contains instructions for the processor to determine the positioning of the detected vehicle, the base width and the offset for a left headlight and for a right headlight of the headlight system separately, in particular in the respective headlight coordinate system, and to actuate the left headlight and the right headlight accordingly. By separately determining the base width and the offset and by separately controlling the two headlights, the shadow region for dimming the detected vehicle can be defined more precisely.According to a second aspect, a system is provided having a headlight system of a vehicle for generating an antiglare high beam. The system comprises a control device according to the first aspect and a sensor system for detecting another vehicle which is exposed to a risk of glare by the headlight system. The sensor system can comprise one or more cameras and be designed to detect other vehicles, in particular using their headlights or tail lamps. This sensor system and headlight system are functionally connected to the control device via the interface. The memory unit contains instructions for the processor to evaluate the sensor data received from the sensor system for determining a current positioning of the detected vehicle and a current road profile and, based on the current positioning of the detected vehicle and on the current road profile, to determine a base width of a shadow region in a headlight far-light field required for avoiding direct glare to the detected vehicle. The memory unit further includes the instructions for the processor to determine at least one offset to extend the shadow region to avoid side glare to the detected vehicle. The memory unit also contains instructions for the processor to actuate the headlight system in such a way that a shadow region is produced in the headlight remote light field for dimming the detected vehicle, the width of which shadow region corresponds substantially to the base width increased by the at least one offset.By ascertaining the at least one offset and by expanding the base width by the ascertained at least one offset, the width of the resulting shadow region can be automatically adjusted to the required minimum size, as a result of which unnecessarily large shadow regions can be avoided.The headlight system may comprise a left headlight and a right headlight, and the memory unit may contain instructions for the processor to determine the positioning of the detected vehicle, the base width and the offset for each of the headlights separately, in particular in the respective headlight coordinate system, and to actuate the left headlamp and the right headlamp accordingly. By separately determining the base width and the offset and by separately controlling the two headlights, the shadow region for dimming the detected vehicle can be defined more precisely, so that the impairment of the headlight performance due to unnecessarily large shadow regions can be further reduced.According to a third aspect, a method for generating an antiglare high beam by means of a headlight system of a vehicle is proposed. The method can be carried out in particular by means of a control device according to the first aspect or by means of a system according to the second aspect. The method comprises providing sensor data, in particular by means of a sensor system, for detecting another vehicle which is exposed to a risk of glare by the headlight system of the vehicle, and evaluating the sensor data for determining a current positioning of a detected vehicle and a current road profile. The method further comprises ascertaining a base width of a shadow region required to avoid direct glare to the detected vehicle, in particular based on the current positioning of the detected vehicle and on the current road profile. The method also comprises ascertaining at least one offset for expanding the shadow region in order to avoid lateral glare of the detected vehicle, in particular based on the current positioning of the detected vehicle, and actuating the headlight system such that a shadow region is produced in the headlight far-light field for dimming the detected vehicle, the width of which shadow region corresponds substantially to the base width increased by the at least one offset. By ascertaining the at least one offset and by expanding the base width by the ascertained at least one offset, the width of the resulting shadow region can be automatically adjusted to the required minimum size, as a result of which unnecessarily large shadow regions can be avoided.According to a fourth aspect, a vehicle is provided. A system with a headlight system according to the second aspect is implemented in the vehicle. The vehicle is distinguished by safe masking of road users and by improved headlight performance.The invention will now be explained in more detail with reference to the appended figures. The same reference numerals are used in the figures for the same or identically functioning parts. FIG. 1 shows a schematic block diagram of a system having a headlight system for generating an antiglare high beam according to an exemplary embodiment, FIG. 2 schematically shows a traffic situation with a vehicle according to an exemplary embodiment, FIG. 3 illustrates the effects of the road profile on the determined offset, FIG. 4 explains in detail the effects of the road profile on the determined offset, FIG. 5 schematically shows a traffic situation with a vehicle according to another exemplary embodiment, and FIG. 6 shows a flow chart of a method for generating an antiglare high beam according to an exemplary embodiment.FIG. 1 shows a schematic block diagram of a system having a headlight system for generating an antiglare high beam according to an exemplary embodiment. The system 1 comprises a sensor system 2 or vehicle sensor system, a control device 3 and a headlight system 4.The sensor system 2 is designed to detect a current traffic situation with regard to a risk of glare for other road users. In particular, the sensor system 2 is designed to detect a vehicle which is subject to a risk of glare by the headlight system 4, for example a vehicle which is driving in front or coming in the opposite direction.The headlight system 4 is a headlight system suitable for generating an antiglare high beam. The headlight system 4 can comprise in particular one or more headlight modules, in particular high beam modules, for generating a segmented high beam. The headlight modules can be designed in particular as LED modules with a number of LEDs for illuminating a high beam segment in the headlight high beam light field. The LEDs can be arranged in a matrix- or pixel-like manner, in particular, on one or more substrates, in particular metal core printed circuit boards. An LED module can in particular have an LED pixel array with a sufficient number or packing density of the LED pixels for realizing a high-resolution glare-free functionality. The headlight system 4 can in particular comprise a headlight optical system for shaping the respective LED light into a partial light beam in each case for illuminating a partial region of a headlight light cone in each case.The control device 3 comprises a processor 10 and a memory unit 20 for storing data and machine-readable instructions for the processor 10. The control device 3 further comprises an interface 30. the interface 30 is functionally connected to the sensor system 2 for receiving sensor data and to the headlight system 4 for controlling the headlight system 4. The control device 3 can comprise, in particular, one or more processors. The control device 3 or the processor 10 can be embodied in particular as a separate unit and / or as part of a vehicle control device or can be implemented in the vehicle control device.The sensor system 2 can comprise in particular one or more cameras which are arranged at different locations on and / or in the vehicle and can be designed to record the vehicle environment with regard to vehicles which are exposed to a risk of glare. The sensor system can comprise one or more sensors or real-time observation devices or image acquisition systems, such as optical sensors, cameras, radar and / or lidar sensors. The sensor system 2 can be designed in particular as part of an ADAS (advanced driver-assistance system) sensor system of the vehicle. The sensor system can furthermore comprise a GPS (Global Positioning System) sensor for detecting a current position of the vehicle. By means of the GPS sensor and map information, in particular the local road profile can be determined.The storage unit 20 can contain instructions for the processor 10 to evaluate the sensor data generated by the sensor system 2 for determining a current positioning of the detected vehicle and based on the current positioning of the detected vehicle to determine a base width of a shadow region in a headlight far-light field required for avoiding direct glare to the detected vehicle. The storage unit 20 may further include instructions for the processor 10 to determine at least one offset to extend the shadow region to avoid side glare to the detected vehicle. A lateral glare to the vehicle detected by the sensor system 2 or to its occupants can take place in particular via side mirrors and / or via lateral windows of the detected vehicle.The control unit 20 can also contain instructions for the processor 10 to actuate the headlight system 4 in such a way that a shadow region is produced in the headlight remote light field for dimming the detected vehicle, the width of which shadow region corresponds substantially to the base width increased by the at least one offset.The storage unit 20 may include instructions for the processor 10 to acquire the current positioning of the detected vehicle from a current distance and a current azimuth angle. In particular, the positioning of the detected vehicle can be detected in a polar coordinate system fixed to the sensor system 2 or to at least one camera of the sensor system. The distance can be defined in particular as the distance between the zero point of the coordinate system and the geometric center point of the detected vehicle. The azimuth angle can be defined in particular as a horizontal angle with respect to a zero-angle beam directed along the direction of travel.A look-up table may be stored in the memory unit, which look-up table establishes a relationship between the positioning of the detected vehicle and the required offset. On the basis of the stored relationship, required offsets can be determined quickly and easily in real time on the basis of the current distance and the current azimuth angle.The offset values can be stored in the look-up table with the proviso that, in the case of an oblique position, in particular with respect to the zero angle beam, of the vehicle detected by the sensor system 2, pane regions of the detected vehicle are substantially completely detected by the at least one offset. This makes it possible to reliably prevent the lateral glare of the detected vehicle or of the occupant thereof.In the look-up table, an offset on both sides, in particular for deblending external mirrors of a vehicle driving in front, can be stored in a small angle range. An azimuth angle range between -5° and +5°, in particular between -2° and +2°, can be defined as a small angle range. In the small angle range, for example, at an azimuth angle between -1° and +1°, the side mirrors of the vehicle driving in front can be detected by a, generally distance-dependent, left and right offset, so that no side mirror glare of the detected vehicle can be effected by the headlight high beam.In some exemplary embodiments, the headlight system 4 comprises headlights that can be controlled independently of one another, in particular a left headlight and a right headlight. The memory unit 20 can also contain instructions for the processor 10 to determine the base width and the offset separately for the left headlight and for the right headlight, in particular in the respective headlight coordinate system, and to actuate the left headlight and the right headlamp accordingly.FIG. 2 shows a schematic view of a traffic situation with a vehicle according to an exemplary embodiment. In particular, FIG. 2 shows a schematic plan view of a vehicle 50 having a system 1 according to the first aspect. In the traffic situation shown, the vehicle 50 travels essentially in a straight line on a wide road behind other vehicles 60 detected by this sensor system 2; FIG. 2 furthermore shows a coordinate system fixed to the vehicle 50 or to the sensor system 2, in particular to a front camera, of the vehicle, having a zero point C, having an X axis and having a Y axis. Azimuth angle θ of the respective other vehicle 60 or vehicle 60 detected by sensor system 2 is plotted on the X axis with respect to a zero axis 70. The zero axis 70 corresponds to a horizontal sensor angle of 0° and corresponds substantially to the axis of symmetry of the vehicle 50. the distance L between the vehicle 50 and the respective other vehicle 60 is plotted on the Y axis. FIG. 2 further shows offset ranges 80 associated with detected vehicles 60.As can be seen from FIG. 2, the size of the offset range or the offset angles Ω depends on the current positioning of the detected vehicle 60. Generally, the larger the azimuth angle θ and the absolute value of the azimuth angle θ, and the smaller the distance L, the larger the offset angle Ω.In some embodiments, in the small angle range, as with the vehicle 60 shown in the center of the road, offsets are defined for both sides. In this case, the shadow region is extended by the two sides in order to avoid side mirror glare of the detected vehicle 60.FIG. 3 illustrates the effects of the road profile on the determined offset. In particular, FIG. 3 shows a vehicle 50 according to the invention and a vehicle 60 detected by the sensor system 2 in two different situations. The straight forward vehicle 60 corresponds to a straight road shape similar to that shown in FIG. 2. The obliquely leftward vehicle 60 corresponds to a curved road situation. To clarify the road shape, road guidance lines 71 for three different road curvatures are shown in FIG. 3. As can be seen from the comparison of the two vehicles 60 to be deblended, the road profile can greatly influence the offset required for lateral deblending. A curved road course may even result in the direction of the offset being flipped, as illustrated in FIG. 3. This is because, although the distance L and the azimuth angle θ are substantially the same for the two vehicles 60 to be deblended, they are exposed to the risk of glare from different sides.FIG. 4 explains in detail the effects of the road profile on the determined offset. At the top of FIG. 4, a dependence is between the road curvature p in 1 / m and a curvature-based offset Ω_c or an offset correction. The traffic situation according to FIG. 3 is reproduced at the bottom in FIG. 4. The simultaneous illustration of the offset correction curve and of FIG. 3 is intended to illustrate the correction of the offset in the case of a curved road profile. In particular, an additional offset for the curve portion can be determined for the dependence of the curvature-based offset Ω_c on the curve curvature p. The dependence between the curvature or road curvature and the offset correction can be stored in particular in the memory unit 20 as a look-up table. The determined curve component of the offset or the offset correction can then be added to the offset determined on the basis of the distance L and the azimuth angle θ and at the same time be reduced from the opposite side up to a maximum of 0°. For later calibration of the function, an additional factor on the subtraction side can be included. This is intended to take account of the fact that too much reduction in the shadow width increases the risk of glare.FIG. 5 schematically shows a traffic situation with a vehicle according to another exemplary embodiment. In the traffic situation shown in FIG. 5, another vehicle 60 is driving ahead of the vehicle 50 having the system 1 slightly offset laterally to the right. The sensor system 2 of the vehicle 50 detects the vehicle 60 traveling ahead, similar to that explained in FIG. 2. In the exemplary embodiment shown, the vehicle 50 has a headlight system 4 with separately controllable headlights. The storage unit 20 of the control device 3 contains instructions for the processor 10, to calculate the base width (not shown) and the offsets Ω', Ω" for the left headlight and for the right headlight separately, and to drive the left headlight and the right headlight accordingly.As is made clear with reference to the illustration of FIG. 5, the offset angles Ω', Ω" can differ considerably from one another from the perspective of the left headlight and of the right headlight. By individually viewing the two headlights, the precision of the masking can thus be further increased, so that unnecessarily large shadow regions in the headlight field can be avoided or reduced.FIG. 6 shows a flow chart of a method for generating an antiglare high beam according to an exemplary embodiment. The method 300 can be executed in particular on a vehicle 50 equipped with the system 1 according to FIG. 1. According to method 300, in a method step 400, sensor data for capturing a light transmitted by headlight system 4 of vehicle 50 is provided. For example, other road users or traffic objects can be detected by means of a front camera of the vehicle 50, in particular on the basis of tail lamps or headlights detected by the front camera. A front camera can be designed in particular such that the detection of the other road users, in particular their position or orientation, can be carried out with sufficient precision and reliability.In a method step 500, the sensor data are evaluated for ascertaining a current positioning of an object or vehicle 60 detected by the sensor system 2. In this case, the location of the detected object can be unambiguously determined via the distance L between the sensor system or the front camera and the object and via the angular position or via the azimuth angle θ relative to the zero direction or 0° sensor angle.In a method step 600, a base width of a shadow region required to avoid direct glare to the detected vehicle 60 is determined. Direct glare is understood here to mean glare to occupants of the vehicle 60 detected by the sensor system 2 that has substantially occurred via a windshield and / or rear window of the detected vehicle 60. The base width can be determined in particular on the basis of the headlights or tail lamps of the vehicle to be dimmed, which headlights or tail lamps are detected by the sensor system 2. The base width can be dimensioned in particular such that a shadow region with a base width substantially completely covers the rear or the front part of the detected vehicle 60.In a method step 700, at least one offset for expanding the shadow region is ascertained in order to avoid lateral glare to the detected vehicle 60. A lateral glare can occur in particular when the occupants of the detected vehicle 60 are blended via the side mirrors and / or through the lateral windows. The at least one offset can be dimensioned in particular such that a side of the vehicle 60 to be dimmed, which side is exposed to the headlight high beam, is detected substantially completely by the at least one offset. Thus, the vehicle to be hidden can be hidden not only in the area of the lamps or headlights, but also in such areas, in particular in the window area and / or in the area of the exterior mirror, where there is a risk of side glare. The at least one offset can be determined in particular on the basis of a look-up table or conversion table stored in the memory unit 20, the distance L and the azimuth angle θ being used as input for the conversion table. Specifically, the table may include an X-axis with the values of the azimuth angle θ and a Y-axis with the values of the distance L to the detected object. For each angle or distance value, a geometric angle component or offset angle Ω is stored for the right and left object or vehicle sides. For each angle-distance pair, the corresponding geometric component or offset can thus be taken from the table in order to add, if appropriate, to the right or to the left side of the base region.In method step 700, an offset correction may also be ascertained based on the current road profile or road curvature. The offset correction can then be added to the offset determined on the basis of the distance and the azimuth angle. In particular, the offset correction can be carried out on the basis of a further look-up table or calculation table. The offset determined on the basis of the distance and the azimuth angle and the curve curvature (including the sign) can then serve as inputs.As an example, it is to be assumed that a detected object or a vehicle 60 to be dimmed is located at a location X at a distance of 30 m and on the left by 3° relative to the zero axis 70 or 0° sensor position. The geometric component to be applied for the right and left sides of the vehicle is known and is: Abs in this example. Geom. Offset left: 0.5°, Abs. Geom. Offset right: 3°. For the location X, a curve curvature is determined.The curvature of the curve can be estimated or determined via various approaches and input values. In the simplest case, information about the own trajectory of the ego vehicle is used, which information can be sufficiently accurate for shorter distances.For example, the curvature is -0.005 [1 / m] corresponding to a curve radius of 200 m, and the sign corresponds to a left curve. An angle-based offset is stored via the calculation table or look-up table, which offset is used for optimizing the shadow width in a curve situation.In the chosen example, it is an offset of 2.5°; optional calibration parameters can be used here: factor Cal_ 1: range 0-1; default=1; factor Cal_ 2: range 0-1; default=0.8. Abs. Geom. Offset adapt. Left=0.5°+factor Cal_1*2.5°=3°. Abs. Geom. Offset adapt. Right = 3°-factor Cal_2*2.5° = 1°. The curve-adapted offset is then set to the object boundaries and provided for the output of the light distribution.In a method step 800, the headlight system 4 is controlled by the control device 3. In this case, a shadow region for dimming the detected vehicle 60 is formed in the headlight remote light, with a horizontal width which corresponds substantially to the base width which is enlarged by the at least one offset. By interpolation, intermediate values can also be applied so that the light image is adjusted in a smooth manner in sufficient resolution and not in stages.The resulting shadow region thus comprises both the base region and the required offset region, so that the detected vehicle 60 is protected both from direct glare and from lateral glare. In particular, the method enables automatic adaptation of the base width and of the offset according to the respective driving situation, so that an excessively wide shadow region can be avoided. By adding the offset to the base width, a two-dimensional adaptive geometric component is automatically added, in each case depending on the current object distance and object angle. An object in the region of the high beam illumination can be more accurately masked by the application of the described offset by means of a sufficiently large, precisely dimensioned shadow region.In some exemplary embodiments, in method steps 600 and 700, the base width and the offset are carried out separately for each headlight of the headlight system, so that each headlight can be controlled individually in order to set the respective base width and the respective offset. By separately determining the base width and the offset and by separately controlling the two headlights, the shadow region for dimming the detected vehicle can be defined more precisely, so that the impairment of the headlight performance due to unnecessarily large shadow regions can be further reduced.The system or method described above makes it possible to make better use of the potential of high-resolution headlight modules. This is because the resolution of light modules, in particular of matrix headlights, is becoming higher and higher, so that a shadow region can be depicted very sharply and in detail in terms of hardware. By automatically adding the adaptive or situation-dependent offset to the likewise situation-dependent base width of the headlight shadow, the technical possibilities of high-resolution headlights can be better exploited and unnecessary shadow regions can be further restricted.Although at least one exemplary embodiment has been shown in the foregoing description, various changes and modifications may be made. The foregoing embodiments are merely examples and are not intended to limit the scope, applicability, or configuration of the present disclosure in any way. Rather, the foregoing description provides those skilled in the art with a plan for implementing at least one exemplary embodiment, and numerous changes may be made in the function and arrangement of elements described in an exemplary embodiment without departing from the scope of the appended claims and their legal equivalents. In addition, according to the principles described here, it is also possible for a plurality of modules or a plurality of products to be connected to one another in order to obtain further functions.List of reference characters1 System 2 Sensor system 3 Control device 4 Headlight system 10 Processor 20 Memory unit 30 Interface 50 Vehicle 60 Detected vehicle 70 Zero axis 80 Offset range 300 Method 400 Method step 500 Method step 600 Method step 700 Method step 800 Method step C Zero point θ Azimuth angle p Curvature Ω Offset angle Ω' Offset angle of the left headlight Ω'' Offset angle of the right headlight Ω_c Curvature-based offset

Claims

Control device (3) for generating an antiglare high beam by means of a headlight system (4) of a vehicle (50), comprising: - a processor (10), - a storage unit (20) for storing data and machine-readable instructions for the processor (10), and - an interface (30), wherein the interface (30) is designed to receive from a sensor system (2) sensor data for detecting another vehicle (60) which is subject to a glare risk by the headlight system (4) and for determining a current road profile and to output control signals for actuating the headlight system (4), wherein the storage unit (20) contains instructions for the processor (10), the sensor data received by the sensor system (2) for determining a current positioning of the detected vehicle (60) and the current road profile are evaluated and based on the current positioning of the detected vehicle (60) and on the current road profile a base width of a shadow region in a headlight light field required for avoiding a direct glare of the detected vehicle and at least one offset for expanding the shadow region for avoiding a lateral glare of the detected vehicle (60) are determined, and the headlight system is controlled such that a shadow region is produced in the headlight light field for deblowing the detected vehicle (60), the width of which shadow region substantially corresponds to the base width increased by the at least one offset.The control device of claim 1, wherein the storage unit (20) includes instructions for the processor (10) to acquire the current positioning of the detected vehicle (60) from a current distance and a current azimuth angle.The control device according to claim 1 or 2, wherein the storage unit (20) includes instructions for the processor (10) to acquire the current road shape from a current curve direction and / or curve curvature.Control device according to Claim 1, 2 or 3, wherein the storage unit (20) stores a look-up table which establishes a relationship between the positioning of the detected vehicle (60) and the offset.Control device according to Claim 4, wherein the offset values are stored in the look-up table with the proviso that, in the event of an oblique position of the vehicle (60) detected by the sensor system, pane regions of the detected vehicle (60) are detected substantially completely by the at least one offset.Control device according to one of the preceding claims, wherein the memory unit (20) contains instructions for the processor (10) to determine the positioning of the detected vehicle (60), the base width and the offset separately for a left headlight and for a right headlight of the headlight system (4) and to actuate the left headlight and the right headlight accordingly.System (1) having a headlight system (4) of a vehicle (50) for generating an antiglare high beam, comprising a control device (3) according to one of the preceding claims and a sensor system (2) for detecting another vehicle (60) which is exposed to a glare hazard by the headlight system, wherein the sensor system (2) and the headlight system (4) are functionally connected to the control device (3) via the interface (30), and wherein the memory unit (20) contains instructions for the processor (10), the sensor data received by the sensor system (2) for determining a current positioning of a detected vehicle (60) and a current road profile are evaluated and based on the current positioning of the detected vehicle (60) and on the current road profile a base width of a shadow region required for avoiding direct glare to the detected vehicle (60) in a headlight far-light field and at least one offset for expanding the shadow region for avoiding lateral glare to the detected vehicle (60) are determined, and the headlight system (4) is controlled such that a shadow region is produced in the headlight light field, the width of which shadow region substantially corresponds to the base width increased by the at least one offset.The system of claim 7, wherein the headlight system (4) comprises left and right headlights and the memory unit (20) includes instructions for the processor (10) to determine the positioning of the detected vehicle (60), the base width, and the offset separately for each of the headlights, and to control the left headlight and the right headlight accordingly.Method for generating a glare-free high beam by means of a headlight system (4) of a vehicle (50), comprising: - providing (400) sensor data for detecting another vehicle (60) which is exposed to a glare risk by the headlight system (4) of the vehicle (50), - evaluating (500) the sensor data for determining a current positioning of a detected vehicle (60) and a current road profile, - determining (600) a base width of a shadow region required for avoiding direct glare of the detected vehicle (60), - determining (700) at least one offset for expanding the shadow region for avoiding lateral glare of the detected vehicle (60) and optionally adapting the determined at least one offset according to the current road profile, and - actuating (800) the headlight system (4) in such a way, in the headlight light field for deblending the detected vehicle ( 60), a shadow region is produced, the width of which corresponds substantially to the base width increased by the at least one offset.Vehicle (50), wherein a system (1) with a headlight system (4) for generating an glare-free high beam according to claim 7 or 8 is implemented in the vehicle (50).

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