Motor vehicle headlights, a system of multiple motor vehicle headlights, and a motor vehicle with such a system of multiple motor vehicle headlights

Abstract

motor vehicle headlights (10) comprising - a housing (14) provided with a light emission opening (12) which is closed by a transparent cover plate (16), - a light module (18) arranged inside the housing (14) for generating a variable light distribution (32), which can be varied or switched to generate a desired light distribution (32) depending on vehicle, environmental and / or traffic conditions detected by means of external sensors, - a control unit (20) for controlling the light module (18) and - at least one mechanical-electrical interface between the control unit (20) and at least one external unit of the motor vehicle (36) arranged outside the headlight (10), wherein the headlight (10) has only a single mechanical-electrical interface (22) for supplying power to the headlight (10), characterized by the fact that Inside the housing (14) a radio communication interface (30) is arranged, which is designed for data exchange with a correspondingly designed further motor vehicle headlight (10') of the same motor vehicle (36) in order to synchronize a variation or switching of the light distributions (32; 32') of the two headlights (10; 10') of the motor vehicle (36).

Description

[0001] The present invention relates to a motor vehicle headlight. It comprises a housing provided with a light exit opening, which is closed by a transparent cover. Furthermore, the headlight comprises a light module arranged inside the housing for generating a variable light distribution. Furthermore, the headlight comprises a control unit for controlling the light module and at least one mechanical-electrical interface between the control unit and at least one external unit of the motor vehicle arranged outside the headlight.

[0002] The invention also relates to a system of multiple headlights of a motor vehicle, as well as to a motor vehicle with such a system. The headlights of the system are arranged, for example, in the front area of ​​the motor vehicle on opposite sides of the vehicle. The light distributions of the individual headlights can be identical or different. They overlap to form an overall light distribution of the system, which illuminates the area in front of the motor vehicle.

[0003] The light module comprises a light source for emitting light and one or more optically active elements for shaping and / or redirecting the emitted light and forming the light distribution of the headlight. The variable light distribution can, for example, be a low beam, where the height of the light-dark boundary can be varied. Furthermore, the light distribution can also include automatic switching between light distributions, e.g., low beam and high beam. Furthermore, it would be conceivable for the light distribution to be switched between city light, country road light, motorway light, bad weather light, etc.

[0004] The light source comprises, for example, one or more semiconductor light sources, in particular an LED (light-emitting diode), an OLED (organic LED), or a PLED (polymer LED). So-called matrix LED headlights can have several LEDs arranged in a matrix (so-called LED matrix), with the individual LEDs forming light points (so-called pixels) and being controllable individually or in groups. Other known headlights comprise a light source in the form of an incandescent lamp, a gas discharge lamp, or one or more laser diodes.

[0005] A headlight can also have multiple light modules. The light module(s) can be fixed or adjustable within the headlight housing. The light modules can produce the same or different light distributions. The light distribution of a fixed light module, for example, in a matrix LED headlight, can be varied by controlling the various light points (so-called pixels) of the LED matrix. Furthermore, it would be conceivable for the headlight to have one or more movable diaphragms that can shade part of the light distribution to vary the light distribution.

[0006] To adjust the light module relative to the housing, actuators can be provided, which can be designed, for example, as electromagnets, in particular as proportional magnets, or as electric motors with linear gears.

[0007] The optically active elements can include, for example, a reflector, a lens, a light guide, and / or an attachment lens. The light distribution is directed through the cover plate in front of the vehicle, e.g., onto a roadway, onto detected objects in front, or similar.

[0008] Known headlights typically have multiple mechanical-electrical interfaces in the form of one or more connector elements (plug or socket), via which the control unit can communicate with external units of the motor vehicle located outside the headlight. A separate mechanical-electrical interface is provided for each connection to an external unit, even if multiple mechanical-electrical interfaces are combined into a common connector element. The mechanical-electrical interfaces are required to supply the light module in the headlight housing with electrical energy and to generate the desired light distribution depending on vehicle, environmental, and / or traffic conditions detected by external sensors.

[0009] The external unit of the motor vehicle located outside the headlight is, for example, a higher-level control unit (so-called body controller), a power source (e.g., a vehicle battery), a communication device (e.g., a vehicle bus system, in particular a CAN bus, a LIN bus, a FlexRay bus, or similar), and / or at least one sensor (e.g., a camera on the vehicle's windshield, a steering angle sensor, tilt sensor, acceleration sensor, light sensor, or similar). Communication with the external units is necessary so that the light distribution can be varied as desired, taking into account measured variables, signals, and parameters from these units and depending on the current ambient and driving situation. In known headlights, the control unit is usually located outside the headlight housing. Such headlights are known, for example, from US 2008 / 298077 A1 or US 2019 / 215502 A1.

[0010] The disadvantage of conventional headlights is that, after their mechanical installation in the vehicle, they must be integrated into the vehicle's infrastructure in terms of signaling in order to be able to vary the light distribution as desired. This requires prior coordination between the headlight manufacturer and the vehicle manufacturer, particularly regarding the definition of mechanical, communication, and / or software interfaces. Furthermore, data lines between the vehicle and the headlight are required to exchange signals between the vehicle's external units and the headlight or its associated control unit.

[0011] The present invention is based on the object of reducing the complexity in the development and installation of the headlight in the motor vehicle, in particular of taking measures so that a signaling integration of the headlight into the infrastructure of the motor vehicle can be dispensed with after installation.

[0012] To achieve this object, a motor vehicle headlight having the features of claim 1 is proposed. In particular, starting from the headlight of the type mentioned at the outset, it is proposed that the headlight only have a single mechanical-electrical interface for supplying power to the headlight. In this context, a 2-pin interface to a power source of the motor vehicle (e.g. the vehicle battery) is proposed in particular. The interface is referred to as mechanical-electrical because, on the one hand, it can form a mechanical connection to a power source of the motor vehicle or to an element connected to it (e.g. a power supply cable) and, on the other hand, an electrical connection to the power source in order to supply electrical power to the headlight or its electrical components.The mechanical connection preferably has a locking element for locking the interface in connection with the motor vehicle's power source or with the element connected to it. The locking element can be configured to automatically lock the lock upon or after the electrical contact is established. Alternatively, the lock can also be closed manually after the electrical connection has been established, for example, by a technician or an industrial robot installing the headlight in the motor vehicle.

[0013] The control unit is preferably arranged inside the headlight housing. Furthermore, sensors are preferably arranged in the headlight housing, which can record measured variables useful for varying the light distribution and send corresponding signals to the control unit. The control unit can independently perform essential functions, such as switching the lighting function between daytime running lights, low beam, and high beam, without the need for additional control signals or sensor signals from external units of the motor vehicle. Connecting the headlight to the motor vehicle's power supply is sufficient for proper functioning of the headlight; integration into the motor vehicle's infrastructure is not necessary. The headlight can therefore be described as a self-contained headlight. The headlight can be integrated into the motor vehicle without complex cabling.

[0014] According to an advantageous development of the invention, the mechanical-electrical interface comprises a 2-pin connector element. The connector element can be designed as a plug or a socket. A power supply cable connected to the power source of the motor vehicle has a corresponding connector element (socket or plug) to enable mechanical engagement and electrical contact with the 2-pin connector element of the headlight. One of the poles of the connector element is preferably at a reference potential, e.g., the ground potential of the motor vehicle, and the other pole preferably corresponds to the potential of the supply voltage for the headlight, e.g., 12V, 24V, 36V, or 48V. The supply voltage for the headlight does not have to correspond to the battery voltage, but can also be lower or higher.

[0015] According to a preferred embodiment of the invention, the mechanical-electrical interface is arranged in the housing so that it is accessible from outside the headlight. The connection of the mechanical-electrical interface to the energy source of the motor vehicle, for example via a power supply cable, can be made before or after the headlight is installed in the motor vehicle. It would also be conceivable for the connection of the mechanical-electrical interface to the energy source of the motor vehicle, for example via the power supply cable, to be made automatically during installation of the headlight in the motor vehicle. For this purpose, for example, the plug element of the power supply cable can be fastened in an installation opening for the headlight in the motor vehicle. In this case, the electrical connection to the energy source, for example via the power supply cable, is established by inserting the headlight into the installation opening and / or mechanically fastening the headlight in the installation opening.via the power supply cable, is established automatically. In this case, locking is not necessary, as the interface is preferably secured by the mechanical fastening of the headlight in the installation opening. Particularly preferably, a built-in plug is provided on the headlight housing, and the vehicle includes a socket into which the built-in plug can be automatically inserted when the headlight is positioned or fastened in the vehicle's installation opening, so that the poles of the plug and socket come into contact with each other. This also ensures that no short circuit can occur in the vehicle when the plug connection is released (the built-in plug is pulled out of the socket).

[0016] As mentioned, the control unit is preferably located inside the housing. It is also proposed that at least one sensor be located inside the housing, which communicates with the control unit. Thus, the headlight operates completely autonomously, except for the external power supply.

[0017] The at least one sensor inside the headlight housing preferably comprises a camera for detecting the traffic ahead and oncoming traffic in front of the motor vehicle. With the help of this camera and a suitable evaluation device associated with the camera, both the preceding and oncoming vehicles can be detected. In this way, it is possible to determine, for example, when the light distribution should be dimmed, at least in certain areas, to avoid dazzling other road users. The evaluation device can be an integral part of the camera or the control unit, or it can be designed as a separate unit that is also located inside the headlight housing.

[0018] Alternatively or additionally, the at least one sensor may also comprise a radar, preferably a long-range radar, or a 3D laser scanner (so-called lidar; “light detection and ranging” or “laser imaging, detection, and ranging”).

[0019] Furthermore, it would be conceivable for at least one sensor to also include a receiver of a satellite-based navigation system (GNSS). The GNSS could be, for example, the US GPS, the Russian GLONASS, the Canadian BDS, or the EU Galileo system. Such a receiver is generally referred to as a GPS sensor.

[0020] Furthermore, the at least one sensor can comprise a temperature sensor that measures the temperature inside the housing or outside the headlight. This can be used, for example, to decide when defrosting or defrosting measures need to be carried out on the headlight cover. Other sensors that can also be provided include, for example, motion sensors, speed sensors for detecting vehicle speed, acceleration sensors for detecting longitudinal and / or lateral acceleration of the vehicle, inclination sensors for detecting a pitch and / or yaw and / or roll angle of the vehicle, and / or photo sensors for detecting ambient brightness and / or light distribution. A photo sensor could also be used to detect scattered light that is reflected and / or scattered back into the interior of the headlight housing by contaminants on the cover.In this case, the photo sensor can be used to decide when cleaning measures (e.g. spraying or wiping) should be carried out on an outer side of the headlight cover lens in order to prevent dazzling other road users by scattered light directed into the foreground.

[0021] Based on one or more of the sensor signals, the control unit can calculate a traffic-, driving-, and / or environment-dependent control signal for the light module or its light source and / or other units assigned to the light module (e.g., actuators, drivers), so that the light module generates the desired light distribution. The sensor signals can be evaluated, for example, in a manner described in US 2019 / 215502 A1. Other types of evaluation are also conceivable.

[0022] Integrating a tilt sensor into the headlight also has the advantage of automatically adjusting the cutoff line of a dimmed light distribution. This, in turn, has the advantage that the headlight can be installed in the vehicle without the need for a mechanical adjustment unit to adjust the built-in headlight.

[0023] According to another advantageous development of the invention, it is proposed that a radio communication interface be arranged inside the housing, which is designed for data exchange with a correspondingly configured additional motor vehicle headlight of the same motor vehicle. The headlight and the additional headlight are part of a system of multiple headlights of one and the same motor vehicle. Advantageously, the radio communication interface is designed to synchronize the generation or variation of the light distribution of the headlight with the generation or variation of the light distribution of the additional headlight of the motor vehicle. A variation of the light distributions of multiple headlights in a system should, if possible, occur simultaneously to avoid irritating the driver and / or other road users.This can be achieved by the described synchronization via the radio communication interfaces of the headlights of a motor vehicle.

[0024] To increase functional reliability, it is conceivable that the control unit is configured to vary the light distribution of the headlight only if the control unit of the other headlight of the vehicle confirms the variation in the light distribution. A variation in the light distribution of a headlight therefore only occurs when the sensors of both headlights of the headlight system have detected a situation that justifies a variation in the light distribution of the corresponding headlight. For example, the light distribution can only be switched to high beam if both headlights decide, based on the sensor data available to them, that high beam operation is possible or advisable.

[0025] According to a further preferred embodiment of the invention, it is proposed that a radio communication interface be arranged inside the housing, which is designed for data exchange between the headlight and a higher-level external control unit of the motor vehicle (so-called body controller), an external communication device (e.g., CAN bus, LIN bus, FlexRay bus, or similar) of the motor vehicle, and / or an external sensor of the motor vehicle. In this way, the headlight can still be wirelessly connected to a limited number of external units of the motor vehicle, for example, to improve the accuracy of detecting other road users or to obtain additional information about the surroundings or the condition of the motor vehicle.The external units to which the headlamp's radio communication interface is connected should have or be connected to corresponding radio communication interfaces so that the radio connection between the corresponding radio communication interfaces can be established and operated.

[0026] The radio communication interface for implementing synchronization with the other headlight of the motor vehicle or for radio communication with external units of the motor vehicle is preferably designed to carry out data exchange according to a short-range radio standard, in particular a WLAN, Bluetooth, and / or NFC standard. Of course, other standards are also conceivable.

[0027] Further features and advantages of the invention are explained in more detail below with reference to the figures. They show: Fig. 1 a schematic representation of a motor vehicle headlight according to the invention, and Fig. 2 a schematic representation of a system according to the invention with several headlights according to Fig. 1.

[0028] In Fig. 1, a motor vehicle headlight according to the invention is designated in its entirety by the reference numeral 10. The headlight 10 can be mounted in the front area of ​​a motor vehicle 36 (cf. Fig. 2) be installed at a designated installation location and electrically connected. The motor vehicle 36 can be a motorized two-wheeler (e.g., moped, motorcycle), three-wheeler (e.g., trike), four-wheeler, or any multi-wheeler (e.g., quad, passenger car, delivery van, truck, bus).

[0029] The headlight 10 comprises a housing 14 provided with a light exit opening 12, which can be made of plastic or metal, for example. The light exit opening 12 is closed by a transparent cover plate 16. The cover plate 16 can be made of glass or plastic. It can be provided with optically active elements (e.g., prisms or cylindrical lenses - not shown) to scatter the passing light, particularly in the horizontal direction, or it can be designed as a so-called clear plate without optically active elements.

[0030] A light module 18 for generating a variable light distribution 32 is arranged inside the housing 14. The light module 18 can be designed as a reflection module or as a projection module. The light module 18 has, in a manner known per se, a light source (not shown) for emitting light, and it can also have, in a manner likewise known, one or more optically active elements (not shown) which shape and / or redirect the emitted light into the light distribution 32. The optically active elements can comprise one or more attachment optics, lenses and / or reflectors. Of course, multiple light modules 18 for generating different light distributions 32 can also be arranged in the headlight housing 14.

[0031] The light module 18 can be arranged fixedly or movably in the housing 14. In the case of a fixedly mounted light module 18, the variable light distribution 32 is generated, for example, by controlling the light module 18 or its light source or by means of one or more diaphragms that can be moved into and out of the beam path to shade part of the light distribution 32. A light module 18 that is arranged movably in the housing 14 can, for example, be adjusted relative to the housing 14 by means of actuators. The actuators can be designed, for example, as electromagnets (e.g. proportional magnets) or as electric motors with a corresponding gear. The movement of the light module 18 can take place in a horizontal or vertical direction. The variable light distribution 32 can, for example,switching between low beam and high beam, raising or lowering a light-dark boundary of a dimmed light distribution or switching between city light, country road light, motorway light, bad weather light, pivoting the light distribution 32 in a horizontal direction to implement a cornering light function, switching daytime running lights or static cornering lights on and off, etc. In the example shown, the light distribution 32 is switchable between low beam and high beam.

[0032] One or more incandescent lamps, gas discharge lamps, or semiconductor light sources (e.g., LEDs, OLEDs, PLEDs, laser diodes) can be used as the light source of the light module 18. When using an LED light source, this can, in particular, comprise several matrix-like light points (so-called pixels), which can be controlled individually or in groups to vary the light distribution 32. For example, areas where other road users have been detected can be specifically excluded from the light distribution 32, or areas where objects (e.g., vehicles, people, animals, objects) have been detected in advance can be specifically illuminated. Depending on the type of light source used, additional components can be provided in the light module 18 or assigned to the light module 18, e.g., a heat sink, a safety device to prevent endangering bystanders in the event of a defect in a laser light source, movable screens, etc.

[0033] A control unit 20 is assigned to the headlight 10 for controlling the light module 18 and for implementing the desired light distribution 32. This control unit can be attached to the outside of the housing 14 so that it can be installed together with the headlight 10 as a single unit in the motor vehicle 36. Lines from and to the control unit 20 can be routed through one or more openings in the housing 14 into the interior of the headlight 10. The openings are preferably covered in a moisture-tight manner by the control unit 20 attached to the housing 14. In the headlight 10 according to the invention, the control unit 20 is preferably arranged in the housing 14.

[0034] Furthermore, the headlight 10 comprises at least one mechanical-electrical interface 22, which electrically connects the control unit 20 to at least one external unit of the motor vehicle 36 arranged outside the headlight 10. In the present invention, the headlight 10 has only a single mechanical-electrical interface 22 for supplying the headlight 10 with electrical energy to operate the control unit 20, the light module 18, and other electrical components of the headlight 10. The interface 22 is thus connected to a power source (e.g., a vehicle battery) of the motor vehicle 36, for example, via a power supply cable.

[0035] The particular advantage of the headlight 10 is that—except for the connection to the external power source—it is completely independent of the motor vehicle 36 and, in particular, does not need to be integrated into the existing signaling infrastructure of the motor vehicle 36. Preferably, all components required for the operation of the headlight 10 and for generating the variable light distribution 32 are part of the headlight 10, in particular arranged in the housing 14.

[0036] In the example shown, the headlight 10 has a camera 24 for capturing the traffic area in front of the motor vehicle 36 in the light exit direction 26 (the so-called apron). The camera 24 is assigned an evaluation device (not shown) for evaluating the images recorded by the camera 24. The evaluation device can be an integral part of the camera 24 or the control unit 20, or it can be designed as a separate unit. In this way, a road user traveling in front of the motor vehicle 36 and / or a road user traveling towards the motor vehicle 36 can be detected by means of the camera 24. The images captured by the camera 24 and / or the detection of another road user are sent to the control unit 20 and used to vary the light distribution 32.

[0037] The control unit 20 can comprise a microcontroller and / or a microprocessor on which a control program runs. By executing the control program, the control unit 20 fulfills its intended control function. In doing so, the control unit 20 uses the data from the camera 24 and possibly other sensors 28 also arranged in the housing 14, such as radar, lidar, GPS sensor, temperature sensor, motion sensor, inclination sensor and / or photo sensor, to calculate the light distribution 32, which is adapted to the current traffic and / or environmental situation, and if necessary to vary the light distribution 32. The data evaluation can be carried out in a known manner, as described, for example, in US 2019 / 215 502 A1. With regard to the evaluation of the sensor data and the calculation and, if necessary, variation of the light distribution 32, express reference is made to this document, and its content is incorporated into the subject matter of the present application.

[0038] For example, if the camera 24 determines that the surroundings are dark, that no vehicle is traveling ahead or approaching, and an additional sensor 28 reports a speed of the vehicle 36 of over 60 km / h, the control unit 20 can cause the lighting module 18 to switch the light distribution 32 from low beam to high beam. If a vehicle traveling ahead or approaching is detected, the areas of the light distribution 32 where the other road user is located can be masked out, or the light distribution 32 can be completely masked out. Masking or masking the light distribution 32 can be accomplished by controlling the light sources, e.g., individual pixels of a matrix LED light source, by means of movable diaphragms, or in another way.

[0039] By integrating an inclination sensor 28, the light-dark boundary of a dimmed light distribution 32 (e.g. fog light or dipped beam) can be aligned automatically, so that the headlight 10 can be installed in the motor vehicle 36 without an external adjustment unit for adjusting the headlight 10 after installation.

[0040] If the light module 18 is equipped, for example, with a matrix LED light source, the radiation direction of the light distribution 32 can be adjusted, for example, by shifting the image on the matrix LED via the software of the control unit 20 without any additional mechanical components.

[0041] Furthermore, the headlight 10 can be equipped with a radio communication interface 30, which enables communication between the headlight 10 and external units of the motor vehicle 36. This can be radio communication according to WLAN, WiFi, Bluetooth, NFC, or any other radio standard for short-range communication. This interface 30 can also be used to adapt the software in the control unit 20 (via so-called updates), and the headlight 10 can be controlled as needed by the driver of the motor vehicle 36 or by a higher-level control unit of the motor vehicle 36 (so-called body controller).

[0042] An important aspect of the radio communication interface 30 is also the synchronization of the headlight 10 with another similar headlight 10' installed in the motor vehicle 36 (cf. Fig. 2), so that the light distributions 32, 32' of the two headlights 10, 10' of the motor vehicle 36 can be varied or switched simultaneously. Furthermore, via communication between the headlights 10, 10', it can be specified, for example, that switching to high beam mode only occurs if both headlights 10, 10' decide, based on the data available to them, that high beam mode is possible.

[0043] In the example shown, the radio communication interface 30 for communication with external units of the motor vehicle 36 and the radio communication interface 30 for synchronizing the headlight 10 with the other headlight 10' of the motor vehicle 36 are designed as a common radio communication interface. However, it would also be conceivable to provide two separate radio communication interfaces.

[0044] Since the headlight 10 operates autonomously, it only requires a mechanical-electrical interface 22, which is designed, for example, as a 2-pin connection, for the power supply.

[0045] Fig. 2 shows a system 34 comprising several motor vehicle headlights 10, 10' of a motor vehicle 36 according to the invention. Fig. 2 shows, by way of example, a motor vehicle 36 with two headlights 10, 10' mounted on opposite sides in the front area of ​​the motor vehicle 36.

[0046] The control units 20 of the two headlights 10, 10' are preferably each designed to vary the light distribution 32; 32' of the headlight 10; 10' respectively assigned to the control unit 20 only when the control unit 20 of the other headlight 10'; 10 of the motor vehicle 36 confirms the variation of the light distribution 32'; 32.

Claims

[1] Motor vehicle headlights (10) comprising - a housing (14) provided with a light exit opening (12) which is closed by a transparent cover plate (16), - a light module (18) arranged inside the housing (14) for generating a variable light distribution (32), which can be varied or switched to generate a desired light distribution (32) depending on vehicle, environmental and / or traffic conditions detected by means of external sensors, - a control unit (20) for controlling the light module (18) and - at least one mechanical-electrical interface between the control unit (20) and at least one external unit of the motor vehicle (36) arranged outside the headlight (10), wherein the headlight (10) has only a single mechanical-electrical interface (22) for supplying energy to the headlight (10), characterized by , that a radio communication interface (30) is arranged inside the housing (14), which is designed for data exchange with a correspondingly designed further motor vehicle headlight (10') of the same motor vehicle (36) in order to synchronize a variation or switching of the light distributions (32; 32') of the two headlights (10; 10') of the motor vehicle (36). [2] Motor vehicle headlight (10) according to claim 1, characterized by that the mechanical-electrical interface (22) comprises a 2-pin plug element. [3] Motor vehicle headlight (10) according to one of the preceding claims, characterized by that the mechanical-electrical interface (22) is arranged in the housing (14) and is accessible from outside the headlight (10). [4] Motor vehicle headlight (10) according to one of the preceding claims, characterized by that the control unit (20) is arranged inside the housing (14). [5] Motor vehicle headlight (10) according to one of the preceding claims, characterized by that at least one sensor (24, 28) is arranged inside the housing (14) and is in communication with the control unit (20). [6] Motor vehicle headlight (10) according to claim 5, characterized by that the at least one sensor comprises a camera (24) for detecting the traffic ahead and oncoming traffic in front of the motor vehicle (36). [7] Motor vehicle headlight (10) according to one of the preceding claims, characterized by that the control unit (20) is designed to vary the light distribution (32) of the headlight (10) only when the control unit (20) of the further headlight (10') of the motor vehicle (36) confirms the variation of the light distribution (32). [8] Motor vehicle headlight (10) according to one of the preceding claims, characterized bythat a radio communication interface (30) is arranged inside the housing (14), which is designed for data exchange between the headlight (10) and a higher-level external control unit of the motor vehicle (36), an external communication device of the motor vehicle (36) and / or an external sensor of the motor vehicle (36). [9] Motor vehicle headlight (10) according to one of the preceding claims, characterized by that the radio communication interface (30) is designed to carry out the data exchange according to a short-range radio standard, in particular a WLAN, Bluetooth and / or NFC standard. [10] System (34) of several motor vehicle headlights (10, 10') of a motor vehicle (36), characterized by that the headlights (10, 10') are all designed according to one of the preceding claims. [11] System (34) according to claim 10, characterized bythat the control units (20) of the headlights (10, 10') are each designed to vary the light distribution (32) of the headlight (10; 10') respectively assigned to the control unit (20) only when the control unit (20) of the respective other headlight (10'; 10) of the motor vehicle (36) confirms the variation of the light distribution (32). [12] Motor vehicle (36) with a system (34) of several motor vehicle headlights (10, 10'), characterized by that the system (34) of several motor vehicle headlights (10, 10') is designed according to claim 10 or 11.

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