Multispectral emission device for vehicles for emitting visible light, lidar and radar radiation, as well as method and use

Description

TECHNICAL FIELD

[0001] The present invention relates to a multispectral emission device, in particular for vehicles, configured to emit light and radar radiation and LiDAR radiation configured to detect driving situations in a detection range using radar radiation, as well as to detect driving situations in a detection range using light radiation, in particular to assist in vehicle navigation. In particular, the invention also relates to a method for emitting light and radar radiation and for detecting at least reflected radar radiation. Last but not least, the present invention also relates to the use of the multispectral emission device for a wide wavelength range of electromagnetic radiation over four orders of magnitude. In particular, the invention relates to a system and a method according to the preamble of the respective independent claim. BACKGROUND OF THE INVENTION

[0002] Particularly in vehicle headlights, attempts are already being made to create a combined device with integrated functionality for both lighting and radar and LiDAR radiation with high practical suitability. Space requirements and robustness are important requirements in the design of headlights, especially for vehicles. The combined use of light and radar radiation has proven particularly advantageous for detecting relative positions in passenger traffic. Driver assistance systems, such as adaptive cruise control, lane departure warning systems, and emergency braking systems, are now used across many vehicle classes, particularly in passenger cars. However, such systems also offer advantages in the shipping and aviation industries and are already being used or at least tested.Radar and LiDAR technology are particularly important for different distance ranges and measurement situations, such as distance, speed, and angle measurements. However, the question remains as to where radar and LiDAR technology should be placed on the vehicle, and how they should potentially interact with other detection components. Conventional integration of radar technology into the bumper of a road vehicle poses a high risk of damage, especially in the case of minor impacts or even slight contact between the vehicle and the surroundings. Integration in the radiator area, on the other hand, requires compromises in vehicle design.Another challenge in integrating radar components into vehicles (especially cars), especially in front end sections, is compensating for attenuation of the transmitted and received signals at the individual material layers (especially the bumper) and at the paint layers. Typically, artifacts and echo patterns in the radar signal must be eliminated. In other words, the precise analysis of radar signals is not trivial due to the application. LiDAR systems, on the other hand, require an optically transparent radiation path to the environment and cannot be installed behind opaque vehicle components such as a bumper. Solutions exist for integrating the measuring systems into the radiator grille with transparent covers or locating the measuring systems behind the windshield.

[0003] The applicant's international patent application WO 2020 / 079060 A1 discloses a multispectral emission device, in particular for vehicles, configured to emit light and radar radiation and configured to detect at least reflected radar radiation, comprising: a headlight with a light-transparent headlight cover and a light source arranged behind the headlight cover; a radar module arranged behind the headlight cover and integrated into the headlight, comprising a radar antenna unit, which is characterized in that the multispectral emission device has at least one radar radiation manipulation device, in particular a frequency-selective radar radiation manipulation device.

[0004] This known device has the advantage of optimizing the emission of light and radar radiation and the detection of reflected radiation by headlights, particularly for vehicles or motor vehicles. Furthermore, it realizes the emission of light and radar radiation and the detection of reflected radar radiation in such a way that both the light and radar radiation can be used in combination in an integrated design in a common device for vehicle navigation, particularly with advantageous side effects regarding structural design and space requirements, the potential range of applications, and the high reliability of the technology.

[0005] Furthermore, there is a need to provide a sensor system with an extended wavelength spectrum, in particular multispectral wavelength ranges from visible light to millimeter waves.

[0006] European patent application EP 3 514 576 A1 discloses a radar module integrated into a headlight and a LiDAR sensor, also integrated into the headlight, which can be used to detect objects in front of a vehicle. From this document, those skilled in the art are aware of the advantages of different sensor technologies for a particular purpose, for example, that the millimeter waves of radar are suitable for rapid detection, particularly of distant objects, while LiDAR sensors are used for precise object detection.

[0007] From the German patent application DE 10 2018 217 774 A1, a method for producing a radar and light emitting arrangement for vehicles is known, in which a radar radiation-shaping device has a conductive part in the form of a light-transparent, electrically conductive oxide layer in which a structural pattern is introduced by thin-film ablation.

[0008] US patent application US 5,868,488 A discloses headlights connected to a steering wheel, whose beam direction can be adjusted in the x and y directions depending on the steering wheel position and an inclination sensor. This allows the illumination of areas to the side of the vehicle during curves, depending on the road layout.

[0009] Based on this state of the art, there is interest in an arrangement and a method for combined light radiation with an extended wavelength spectrum and with radar emission, which can achieve further advantages and further increase the benefit for the road user.

[0010] German patent application DE 10 2018 217 215 A1 of the applicant of the present patent application discloses a low-beam headlight with a light source arrangement for generating a light cone of light that is less divergent in the first transverse direction (y) than in a second transverse direction (x) perpendicular to the first transverse direction; a first, second, and third lens array arranged next to one another along the second transverse direction (x) in order to be irradiated on the input side by an associated segment (12a, 12b, 12c) of the light cone (12) arranged next to one another in the second transverse direction, and to emit low-beam light (102) on the output side with a luminous intensity angular distribution that is different from that of the light cone (12).

[0011] German patent application DE 10 2018 217 213 A1 by the applicant of the present patent application discloses a high beam headlight with a light source array having a plurality of light sources; a honeycomb condenser; and a collimator connected between the honeycomb condenser and the light source array for illuminating the honeycomb condenser with collimated light from the plurality of light sources, wherein the light source array has a first light source and at least one second light source, wherein the collimated light of the first light source of the light source array leads to crosstalk-free irradiation of the honeycomb condenser and illumination of a first far-field segment, and for each of the at least one second light source, the collimated light of the respective second light source leads to irradiation of the honeycomb condenser with channel crosstalk and illumination of a second far-field segment aligned obliquely to the first far-field segment. SUMMARY OF THE INVENTION

[0012] The objective is to provide a device and a method with which the emission of illumination light radiation, LiDAR radiation, and radar radiation, and the detection of reflected LiDAR and radar radiation by headlights can be optimized, particularly for vehicles or motor vehicles. In particular, the objective is to realize the emission of illumination light radiation, LiDAR radiation, and radar radiation, and the detection of reflected radiation, in such a way that both the illumination light radiation, the LiDAR radiation, and the radar radiation can be used in combination with one another in an integrated design in a common device for vehicle navigation, particularly with advantageous side effects regarding structural design and space requirements, or also with regard to the potential range of applications, or also with regard to the high reliability of the technology.Furthermore, the task is to facilitate the installation of the headlight and / or to adjust the field of view of the sensors quickly and reliably.

[0013] This object is achieved by a multispectral sensor-headlight system according to claim 1 and by a method according to the respective independent method claim. Advantageous developments of the invention are explained in the respective subclaims. The features of the exemplary embodiments described below can be combined with one another, unless this is explicitly denied. According to the invention, a multispectral emission device is provided, in particular for vehicles, for example land vehicles, aircraft, ships, and submarines, configured to emit electromagnetic radiation and configured to detect at least reflected radar radiation and reflected LiDAR radiation, comprising: a headlight with a light-transparent headlight cover and a light source arranged behind the headlight cover; for visible light as headlight light. According to the invention, a multispectral emission device,in particular for vehicles, configured to emit electromagnetic radiation and configured to detect at least reflected radar radiation, comprising: a headlight with a light-transparent headlight cover and a light source arranged behind the headlight cover for emitting visible light as headlight light; a radar module arranged behind the headlight cover and integrated into the headlight, comprising a radar antenna unit, wherein the multispectral emission device comprises at least one radiation-manipulating device, configured such that the multispectral emission device comprises at least one transmitting unit for LiDAR radiation and one receiving unit for LiDAR radiation, and at least two radiation manipulators, wherein one of the radiation manipulators for LiDAR radiation is a LiDAR radiation-manipulating device,at least one further radiation manipulator is a radar radiation manipulating device, wherein the radiation manipulator for LiDAR radiation and the transmitting unit for LiDAR radiation are arranged such that the radiation manipulator for LiDAR radiation redirects LiDAR radiation emitted by the transmitting unit for LiDAR radiation, that the radiation manipulator for LiDAR radiation is configured such that LiDAR radiation passing through the headlight cover from the outside is guided to the receiving unit for LiDAR radiation, and that the radiation manipulator for radar radiation is configured such that radar radiation passing through the headlight cover from the outside is guided to the receiving unit for radar radiation, and wherein the transmitting unit for LiDAR radiation, the radiation manipulator for LiDAR radiation, the radar module, and the radiation manipulator for radar radiation are arranged such thatthat at least one radiation cone of the redirected LiDAR radiation and at least one radiation cone of the redirected radar radiation can be aligned with each other.,

[0014] According to the invention, radar and LiDAR sensors are integrated into the headlights, ensuring optimum transmission for optical sensors and light sources, as well as freedom from contamination. One or more LiDAR (Light Detection and Ranging) sensors operate using a measurement principle based on determining the time between the emission of a laser pulse and the reception of the reflected light. This allows them to measure distances very precisely and clearly distinguish between different objects.

[0015] A particularly preferred embodiment of the multispectral emission device is characterized in that at least one radiation cone of the redirected LiDAR radiation and at least one radiation cone of the redirected radar radiation can run parallel to each other, paraxially and / or coaxially or within overlapping radiation cones.

[0016] The at least partially coaxial beam guidance is advantageous in order to avoid a parallax error, which would otherwise have to be calculated out in a complicated way.

[0017] A particularly expedient development of the multispectral emission device is characterized in that at least one radiation cone of the redirected LiDAR radiation (104) and at least one radiation cone of the redirected radar radiation can additionally overlap.

[0018] This configuration relates to the overlap of a LiDAR and radar beam cone, in particular to the overlap of the LiDAR and radar beam cones shown. The overlap of a LiDAR and radar beam cone brings with it the following technical advantages.

[0019] On the one hand, the higher sensor density enabled by this allows for a more compact installation space. On the other hand, the wavelengths, which differ by several orders of magnitude, are combined in such a way that additional detection options are created, for example, with regard to the movement of an object that reflects the signals relative to the multispectral emission device. This also ensures all-weather suitability for the determination of both translational and rotational motion components of objects, especially other vehicles or pedestrians. Furthermore, it ensures fast and precise determination of both distances and speeds and accelerations.

[0020] This combines the insensitivity of radar radiation to rain and fog particularly well with the particularly high resolution of LiDAR radiation.

[0021] A particularly useful development of the invention provides that the beam cone of the headlight also runs coaxially with the beam cones of the LiDAR and radar radiation. This ensures an overlapping common field of view (FOV), which simplifies the calibration of the LiDAR and radar systems to each other for joint detection of the same objects. The LiDAR and radar measurements can be recorded independently of each other and used for mutual validation, or the data can be merged for improved measurement, for example, by using the measurement data from one system for improved settings and thus improved measurement by the other system, or by jointly evaluating the raw data from both systems.

[0022] Particularly advantageous embodiments of the invention enable a combination of wavelengths over 4 orders of magnitude from 400 nm to 4 mm.

[0023] The multispectral emission device preferably emits electromagnetic radiation in at least three wavelength ranges, in a preferred embodiment over four orders of magnitude.

[0024] An expedient development of the invention provides that at least one radiation cone of the redirected LiDAR radiation, at least one radiation cone of the redirected radar radiation and one radiation cone of the headlight light can run parallel to one another, paraxially and / or coaxially or overlapping.

[0025] A particularly preferred embodiment of the multispectral emission device is characterized in that at least one radiation cone of the redirected LiDAR radiation (104) and at least one radiation cone of the redirected radar radiation and at least one radiation cone of the headlight radiation can additionally run paraxially and / or overlapping.

[0026] It is particularly advantageous to achieve three coaxialities: for at least one radiation cone of the redirected LiDAR radiation, at least one radiation cone of the redirected radar radiation and at least one radiation cone of the headlight light.

[0027] The positions of the components disclosed in this application for LiDAR radiation and those disclosed for radar radiation can be interchanged. This applies in particular to the sensor components and radiation manipulators shown.

[0028] In particular, the radiation manipulators for LiDAR radiation and the radiation manipulator for radar radiation can be positioned independently of each other in the headlight. This also applies regardless of their positioning in the radiation path. In particular, the radiation manipulator for LiDAR radiation can be located both before and after the radiation manipulator for radar radiation in the radiation path.

[0029] The multispectral emission device is preferably characterized in that it has at least one transmitting unit for LiDAR radiation and a receiving unit for LiDAR radiation and at least two radiation manipulators, wherein one of the radiation manipulators is a LiDAR radiation manipulating device, at least one further radiation manipulator is a radar radiation manipulating device, wherein the radiation manipulator for LiDAR radiation and the transmitting unit for LiDAR radiation are arranged such that the radiation manipulator for LiDAR radiation redirects LiDAR radiation emitted by the transmitting unit for LiDAR radiation, that the radiation manipulator for LiDAR radiation is configured such that LiDAR radiation passing through the headlight cover from the outside is directed to the receiving unit for LiDAR radiation, and that the radiation manipulator for radar radiation is configured such thatthat radar radiation passing through the headlight cover from the outside is guided to the radar radiation receiving unit, and wherein the LiDAR radiation transmitting unit, the LiDAR radiation manipulator, the radar module, and the radar radiation manipulator are arranged such that at least one radiation cone of the redirected LiDAR radiation and at least one radiation cone of the redirected radar radiation extend parallel and / or coaxially and overlapping with one another.

[0030] The term radar comes from the English terms radio detection and ranging.

[0031] LiDAR refers in particular to a device, a system (Light Detection and Ranging) or the radiation used therein.

[0032] Furthermore, the present application also discloses embodiments in which, unless explicitly excluded, further developments and embodiments relating to LiDAR radiation can also be used for radar radiation.

[0033] Likewise, embodiments in which further developments and embodiments relating to radar radiation can also be used for LiDAR radiation, unless explicitly excluded.

[0034] A particularly preferred embodiment of the multispectral emission device is characterized in that it comprises at least one transmitting unit for LiDAR radiation and a receiving unit for LiDAR radiation and at least two radiation manipulators, wherein one of the radiation manipulators is a LiDAR radiation manipulating device, at least one radiation manipulator for radar radiation is a radiation manipulating device, wherein the radiation manipulator for LiDAR radiation and the transmitting unit for LiDAR radiation are arranged such that the radiation manipulator for LiDAR radiation redirects LiDAR radiation emitted by the transmitting unit for LiDAR radiation such that at least one radiation cone for redirected LiDAR radiation runs parallel and coaxially to a light cone emitted by the light source, wherein the radiation manipulator for radar radiation is a preferably frequency-selective radar radiation manipulating device,wherein the radiation manipulator for radar radiation and the radar module are arranged such that the radiation manipulator for radar radiation redirects radar radiation emitted by the radar module such that at least one radiation cone for redirected radar radiation runs parallel, coaxially and / or overlapping with the light cone emitted by the light source (102), that the radiation manipulator for LiDAR radiation (130) is configured such that LiDAR radiation passing through the headlight cover from the outside is guided to the LiDAR radiation receiving unit (150, 150b), and that the second radiation manipulator (140) is configured such that radar radiation passing through the headlight cover from the outside is guided to the radar radiation receiving unit (111).

[0035] Radiation manipulator means a unit that is designed to make one or more of the following changes to electromagnetic radiation: Reflection; transmission; deflection; radiation shaping; radiation focusing; radiation splitting; radiation combining.

[0036] Thus, a multispectral emission device is provided, in particular for vehicles, configured to emit electromagnetic radiation and configured to detect at least reflected electromagnetic radiation, comprising: a headlight with a light-transparent headlight cover and a light source arranged behind the headlight cover, i.e. in the direction of emission in front of the headlight cover, and with a radar module arranged in the headlight behind the headlight cover, integrated with at least one radar antenna unit and a LiDAR module with at least one LiDAR receiving unit, wherein the multispectral emission device has two radiation manipulators.

[0037] Preferably, an integral headlight with high transmission of illumination wavelengths in the visible wavelength range, a frequency-selective beam deflector for the LiDAR wavelength and a frequency-selective beam deflector for the radar radiation, wherein all three wavelength ranges are combined in a coaxial system concept, is also provided.

[0038] The coaxial or overlapping integration of light, LiDAR, and radar sensors enables the combination of multispectral wavelength ranges across several orders of magnitude. The detection capabilities realized with this invention contribute significantly to increasing the degree of vehicle automation on the path to autonomous driving.

[0039] The invention has several advantages that can be implemented individually or combined with one another. These include, in particular: Detection of objects in the far and near field, both in front of and next to the vehicle through the use of LiDAR and radar. Increasing the sensor density in the vehicle: compact installation space through coaxial and / or overlapping integration of LiDAR, radar and lighting technology in the headlight housing. Increasing reliability and robustness through simplified data fusion of complementary sensor data from LiDAR and radar, which have the same detection direction. Flexibility in the use of the headlight installation space through degrees of freedom in the development of the reflective / transmissive structures when directing the radar radiation.

[0040] According to the invention, the multispectral emission devices disclosed in this application can further be operated such that LiDAR radiation in the form of a primary LiDAR signal is emitted as bundled electromagnetic radiation in a LiDAR radiation cone, that radar radiation in the form of a primary radar signal is emitted as bundled electromagnetic radiation in a radar radiation cone, that the LiDAR radiation cone and the radar radiation cone run parallel, coaxially and overlapping with each other, that secondary LiDAR signals reflected by at least one object and radar signals reflected by the object are detected independently of each other and, if necessary, evaluated in a linked manner, that individual, several or all of the following information is obtained from the evaluation: an angle or a direction to the object a distance to the object (from the time difference between sending and receiving) a relative movement between the multispectral emission device and the object and that the parallelism, coaxiality and overlap of the LiDAR beam cone and the radar beam cone are taken into account in the evaluation.

[0041] Particularly advantageous is the independence of radar, LiDAR and headlight light, especially with regard to their directions, which enables independent scanning of different sensor wavelengths and illumination wavelengths.

[0042] It is particularly advantageous that at least one further LiDAR radiation cone and / or one further radar radiation cone is emitted so that an angle-resolving detection of the object takes place.

[0043] According to the invention, a vehicle is further provided which is characterized in that it has at least one of the multispectral emission devices disclosed in this application and a unit for fusion of sensor measurement data for radar and LiDAR.

[0044] Preferably, at least one micro-optic element is used, particularly in the beam path of the headlight. The micro-optic element serves to achieve a desired intensity distribution of the headlight light.

[0045] This makes it possible to adapt the headlight beam to operational requirements, in particular to the operational requirements of a vehicle in which the headlight is installed.

[0046] Examples of lighting scenarios that can be reliably implemented in this way are low beam and high beam.

[0047] The dipped beam is a sharp asymmetrical cut-off point in the upper part of the beam and a more or less sharp drop in the lower and lateral part of the beam.

[0048] The high beam is a symmetrical light beam, but with the possibility of dynamic adjustment of the light beam (switching individual segments on and off).

[0049] This can also be achieved with a conventional headlight, but with micro-optics there is the added advantage of higher transmission (i.e. efficiency) and much greater compactness.

[0050] Preferably, the use of a micro-optic system is analogous to that described in the German patent applications DE 10 2018 217 215 A1 DE 10 2018 217 213 A1 of the applicant of the present patent application.

[0051] Based on collimated LED light sources, the micro-optics are used to shape the angular distribution of the intensity of the low and high beams in accordance with ECE regulations. In addition, the functionality of a segmented high beam is implemented to avoid glare for oncoming drivers. Compared to conventional optical designs for automotive headlights, such as freeform mirrors and aspherical lenses, the micro-optical beam deflection enables high transmission, a short overall length, and flexible design of the contours of the lighting modules for the low and high beams.

[0052] According to the invention, in particular, an integration approach is provided in which the electromagnetic radiation from headlight light as well as LiDAR and radar sensors is combined coaxially within a headlight via a shared transmission and reflection element.

[0053] Depending on the sensor system and the wavelength spectrum used, special thin films are preferably used, some of which are selectively structured. In this way, multispectral wavelength ranges from visible light to millimeter waves (in the preferred embodiment from 400 nm to 4 mm) can be coaxially integrated over several orders of magnitude. The actual sensors and, if necessary, other components of LiDAR modules or radar modules can then be mounted outside the field of view of the headlight. This creates a compact, multispectral sensor-headlight system that is easy to calibrate. The LiDAR transmitter and LiDAR receiver can be aligned to each other before installation, but alignment after installation is particularly advantageous, as this post-installation alignment improves alignment to at least one of the radiation modifiers.

[0054] The headlight system is preferably designed to enable area-selective illumination as well as angle-resolved object detection at near and far ranges using radar, LiDAR, and array light emitters. Wavelength-selective structures allow the influencing of sensor-specific spectral ranges, thereby reducing thermal effects caused by unwanted absorption. Through further thermal insulation of the individual components, particularly their spatial and thermal decoupling, phase shifts, increased noise levels, and positioning inaccuracies of sensors and lighting can be largely avoided, even in an integrated approach. Highly selective sensor situations are realized through the use of individually addressable VCSEL arrays and photodetector pixels.

[0055] The LiDAR transmitter unit is preferably an array light emitter. Alternatively, this can be a single edge-emitter laser, but VCSEL arrays are particularly advantageous.

[0056] Thermal insulation of the LiDAR transmitter unit has the advantage of preventing temperature-dependent wavelength drift. This is particularly advantageous because the LiDAR receiver has a defined bandpass filter that allows only a narrow wavelength range to be received. If the laser drifts outside this range due to temperature, the secondary LiDAR radiation will no longer be received. VCSEL arrays also have the added advantage of being significantly less sensitive to temperature than conventional lasers.

[0057] By arranging the visible-light-emitting elements, the radar module, and the LiDAR module, the radiation manipulators allow the heat-emitting components to be thermally separated from each other. This improves the thermal insulation of the LiDAR module, especially the LiDAR transmitter unit.

[0058] In contrast to previously tested technologies, the arrangement according to the invention enables the advantages such as protection and integrated design within the headlight to be used for radar technology and LiDAR technology in a particularly flexible manner and with high variability, without having to accept noticeable restrictions with regard to the lighting function.

[0059] The headlight cover can be made of a transparent material, such as glass or transparent plastic. The headlight cover or its material is (per se) transparent to light and radar radiation (RF waves). It is particularly advantageous to use a headlight cover that minimizes attenuation, refraction, and scattering of the electromagnetic radiation used, preferably radar radiation, LiDAR radiation, and headlight light.

[0060] Radar is understood to be one of the already available or established technologies for transmitting and detecting electromagnetic waves, possibly in different wavelength ranges, i.e., radar in the general sense of "radio detection and ranging" or "radio direction and ranging." This radar technology can encompass waves in different frequency ranges.

[0061] Radar radiation is emitted in the form of a primary signal as bundled electromagnetic radiation, and received as a secondary signal in the form of echoes reflected from objects and evaluated taking into account at least one criterion.

[0062] From the received electromagnetic waves reflected by the object, one, several or all of the following information can be obtained: the angle or direction to the object the distance to the object (from the time shift between sending and receiving) the relative movement between transmitter and object - it can be calculated using the Doppler effect from the shift in the frequency of the reflected signal the sequence of individual measurements provides the distance and the absolute speed of the object.

[0063] LiDAR is one of the already available or established technologies for transmitting and detecting electromagnetic waves, particularly near-infrared radiation, preferably in the wavelength range of 800 nm to 3000 nm. In particular, it involves modulated, preferably pulsed laser radiation in one or more wavelength ranges.

[0064] LiDAR radiation is also emitted in the form of a primary signal as bundled electromagnetic radiation, and received as a secondary signal in the form of echoes reflected from objects and evaluated taking into account at least one criterion.

[0065] From the received electromagnetic waves reflected by the object, one, several or all of the following information can be obtained: the angle or direction to the object the distance to the object (from the time shift between sending and receiving) the relative movement between transmitter and object - it can be calculated using the Doppler effect from the shift in the frequency of the reflected signal the sequence of individual measurements provides the distance and the absolute speed of the object.

[0066] The analysis of radar radiation and the analysis of LiDAR radiation preferably result in complementary and / or overlapping information.

[0067] The invention provides a multispectral emission unit which, in particular, emits at least partially coaxial electromagnetic radiation in at least three mutually different wavelength ranges, sometimes over four orders of magnitude.

[0068] The multispectral emission unit according to the invention emits electromagnetic radiation in at least three wavelength ranges, in a preferred embodiment over four orders of magnitude: Visible light radiation, in particular in the range between 400 nm and approximately 780 nm, LiDAR radiation, in particular in the wavelength range between 800 nm and 3000 nm, preferably in wavelength ranges of 860-940 nm and optionally one or more further wavelength ranges, or one or more further wavelengths, for example 1550 nm. Radar radiation, in particular in wavelength ranges between 1 mm and 100 mm, in particular between 3.7 mm and 4 mm.

[0069] An advantageous embodiment of the multispectral emission device is characterized in that the radiation manipulator for LiDAR radiation is designed such that LiDAR radiation emitted by the transmitting unit for LiDAR radiation is redirected such that at least one further radiation cone for redirected LiDAR radiation is formed and that at least one receiving unit for LiDAR radiation is provided, wherein the further receiving unit for LiDAR radiation is arranged such that further LiDAR radiation passing through the headlight cover from the outside is guided to the receiving unit for further LiDAR radiation.

[0070] An expedient embodiment of the multispectral emission device provides that the radiation manipulator for radar radiation is designed such that radar radiation emitted by the radar module is redirected such that at least one further radiation cone for redirected radar radiation is formed and that at least one receiving unit for radar radiation is provided, wherein the receiving unit and / or a further receiving unit for radar radiation is arranged such that further radar radiation passing through the headlight cover from the outside is received in different surface areas than "the other" secondary radar radiation is directed.

[0071] The radar waves are deflected by any desired, but defined, angle, preferably 90°, using reflect and / or transmit arrays. The electromagnetic wave is thus deflected without additional focusing. This allows the use of any automotive radar on the headlight in front of the deflection system, which represents a significant advantage.

[0072] Through a customized thin-film deposition combined with spatially selective laser ablation, a structure is created, preferably consisting of phase-controlling, polarization-selective dielectric and / or conductive, light-transparent layers. The radar beams can be redirected independently of the shape (e.g., planar, curved, or with any geometry) of the reflect / transmit array, thus offering degrees of freedom in the implementation of the overall system, particularly with regard to the beam path guidance of the LiDAR and light emitter.

[0073] One possible design is the use of several such reflective, transmissive or simultaneously reflective and transmissive structures to realize any desired beam paths in order to create further degrees of freedom in the realization of the overall system.

[0074] An additional design is the use of one or more such reflective, transmissive, or simultaneously reflective and transmissive structures to create multiple beam paths for utilizing multiple radar and / or LiDAR sensors. This also includes covering different detection ranges with different sensors. A further design is the use of additional frequency-selective surfaces to divide / discriminate beam paths along the frequency.

[0075] A further advantageous embodiment is the combination of electrical elements with mechanically adjustable alignments (in particular by rotation) in order to be able to adjust / change optical beams and millimeter waves simultaneously and / or independently of each other. This is done in particular according to the preferred embodiments presented below.

[0076] An advantageous development of the multispectral emission device is characterized in that at least one of the radiation manipulators (130, 140) is mounted rotatably along at least one axis.

[0077] Preferred embodiments of the invention enable rapid and reliable adjustment of one or more FOVs. FOV refers to a field of view of a respective sensor receiver, in particular the radar module or the LiDAR module, modified by at least one of the radiation manipulators.

[0078] A rotational mounting of at least one of the radiation manipulators around a z-axis is particularly advantageous when the headlight is being set up for the first time, as this facilitates assembly.

[0079] A rotational mounting and active pivotability of at least one of the radiation manipulators (130, 140) about a y-axis is particularly advantageous during operation of the headlight, since this allows a horizontal FOV to be adjusted quickly and reliably.

[0080] A suitable embodiment of the multispectral emission device provides that at least one of the radiation manipulators is mounted for rotation about the y-axis during operation of the multispectral emission device, so that a horizontal FOV can be adjusted quickly and reliably.

[0081] An advantageous development of the multispectral emission device is characterized in that at least one of the radiation manipulators (130, 140) is mounted rotatably about an x-axis during operation of the multispectral emission device, so that a vertical FOV can be adjusted quickly and reliably.

[0082] Due to the rotatory mounting and active pivotability of at least one of the radiation manipulators about the y-axis shown in this application, the FOV of the LiDAR radiation and / or the radar radiation can be pivoted to the left or right, in particular during a journey of a vehicle provided with at least one multispectral emission device according to the invention, following a curve of a route.

[0083] Furthermore, car manufacturers can adjust sensors in the headlights accordingly, e.g. more in the direction of travel or outwards, especially depending on the FOVs of other sensors on the car.

[0084] A rotational mounting and active pivotability of at least one of the radiation manipulators about an x-axis is particularly advantageous during headlight operation, as this allows a vertical field of view (FOV) to be adjusted quickly and reliably. This allows the FOV of the LiDAR radiation and / or the radar radiation to be pivoted up and down, particularly during travel of a vehicle equipped with at least one multispectral emission device according to the invention, following the course of a route. In valleys / mountains, the FOV can be pivoted up and down along the road.

[0085] A suitable embodiment of the multispectral emission device provides that at least two of the radiation manipulators can be rotated independently of each other about at least one of the axes during operation of the multispectral emission device, so that FOVs of the LiDAR radiation and the radar radiation can be adjusted independently of each other by separately rotating the two radiation manipulators.

[0086] In particular, it is possible to adjust the FOV of the radar radiation and the LiDAR radiation independently of each other by separately rotating at least two

[0087] Radiation manipulators and thus to change the FOVs of the LiDAR radiation and the radar radiation quickly, independently and reliably separately from each other and, in particular, to pan them separately from each other.

[0088] According to the invention, the multispectral emission device is to be designed such that it can be connected to a control unit, wherein the control unit is configured such that it can control the radiation manipulators during operation of the multispectral emission device such that the radiation manipulators can be rotated independently of one another about at least one of the axes, so that by means of the separate rotation of the at least two radiation manipulators, FOVs of the LiDAR radiation and the radar radiation can be adjusted independently of one another, and that the separate rotation of the radiation manipulators can be used to increase the detection accuracy of objects.

[0089] This expedient embodiment of the multispectral emission device enables an advantageous method of operating it, which is characterized in that the multispectral emission device is connected to a control unit, wherein the control unit controls the radiation manipulators during operation of the multispectral emission device such that the radiation manipulators are rotated independently of one another about at least one of the axes, so that by means of the separate rotation of the at least two radiation manipulators, FOVs of the LiDAR radiation and the radar radiation can be adjusted independently of one another, and that the separate rotation of the radiation manipulators is used in real time to increase the detection accuracy of objects.

[0090] According to the invention, a vehicle containing at least one - preferably at least two - of the multispectral emission devices shown in this application is to be designed such that it contains a control unit, wherein the control unit is configured such that it can control the radiation manipulators during operation of the multispectral emission device such that the radiation manipulators can be rotated independently of one another about at least one of the axes, so that by means of the separate rotation of the at least two radiation manipulators, FOVs of the LiDAR radiation and the radar radiation can be adjusted independently of one another, and that the separate rotation of the radiation manipulators can be used to increase the detection accuracy of objects.

[0091] Advantageous embodiments concerning the arrangement of the radar module are described below.

[0092] According to an advantageous embodiment, the radar module and the LiDAR module are arranged outside (in particular below or behind) a light cone emitted by the light source. In other words: The radar module and the LiDAR module can be arranged outside the light propagation area, i.e., laterally spaced from the optical axis of the light source(s). According to one embodiment, the radar module and / or the LiDAR module are arranged below a tangential plane or horizontal plane that delimits the light reflector downwards. According to one embodiment, the radar module and / or the LiDAR module are arranged outside (in particular laterally, above, or below) an optical axis or an axis corresponding to the main orientation of the light reflector or the light source. This also makes it possible to optimize their relative arrangement to one another.Optionally, a radar module can be arranged behind the light source(s), particularly with the optical axis of the radar module oriented substantially parallel to (or coincident with) the central longitudinal axis of a light cone of the light sources. A radiation manipulator can be arranged between the radar module and the light sources.

[0093] Radar emitters and receivers, as well as LiDAR emitters and receivers, are not positioned in the beam path, but outside it. By reflecting the radar radiation from the radiation manipulator and deflecting the radar radiation in the range of 60 to 120°, especially 90°, with an advantageous relative arrangement of the individual components, the radar radiation can be modified toward the front of the vehicle, while simultaneously ensuring radiation deflection.

[0094] In particular, the radar module, or a radar emitter and receiver, can be oriented vertically upwards. A transparent radiation manipulator (in particular a so-called Fresnel reflector array) with a coating can be arranged in front of it. The antennas used in the radar module are preferably planar antennas (e.g., patch antennas). The antennas can preferably be integrated into the radar module via transmission lines (e.g., microstrip lines) without additional adapters. The antennas can consist of several individual antennas or array antennas, particularly in a two-dimensional arrangement.

[0095] Both radiation manipulators are transparent to the visible light of the headlight light source and primarily reflect the radar and / or LiDAR radiation, directing it forward through the headlight cover. The radiation manipulator may modify the radar radiation into a desired beam or area shape.

[0096] The cover may be coated to provide the frequency-selective pass structure and to allow only radar radiation in a certain band range to pass through.

[0097] According to one embodiment, the radar module and the LiDAR module are arranged in an area outside the light cone of the headlight. This also provides advantageous decoupling from the lighting function.

[0098] According to one embodiment, the radar module and / or the LiDAR module are arranged at the bottom of a headlight housing, in particular mechanically coupled to the ground. This also facilitates decoupling from the lighting function.

[0099] According to one embodiment, the radar module and / or the LiDAR module are located below the horizontal axis of the electromagnetic emission direction, with the LiDAR module in particular being tilted by 90° and folded over an additional LiDAR-modifying element. This facilitates system calibration and creates a more compact overall system.

[0100] According to one embodiment, at least one of the radiation manipulators is arranged in a radiation direction of the radar radiation.

[0101] According to one embodiment, at least one of the radiation manipulators is arranged in the reflection direction of the radar radiation.

[0102] According to one embodiment, at least one of the radiation manipulators is arranged in a radiation direction of the LiDAR radiation.

[0103] According to one embodiment, at least one of the radiation manipulators is arranged in the reflection direction of the LiDAR radiation.

[0104] According to one embodiment, at least one of the radiation manipulators is flat, in particular planar or curved.

[0105] According to one embodiment, at least one of the radiation manipulators is frequency-selective, in particular in that the radiation manipulator comprises a frequency-selective radiation deflection structure. The radar radiation manipulating device is designed to be frequency-selective, in particular in that the radiation manipulator used for manipulating the radar radiation has conductive and / or dielectric structures with dimensions that are tuned to the wavelength of the emitted radar radiation (frequencies).

[0106] According to one embodiment, at least one of the radiation manipulators is arranged in the radiation direction of the light source.

[0107] According to one embodiment, at least two radar radiation manipulating regions, each with an individual radar radiation manipulating function, are provided on at least one of the radar radiation manipulating devices. This also makes it possible to individually influence a first portion of the radar radiation and to individually influence a second portion of the radar radiation in a different manner than the first portion, in particular for the purpose of optimized detection in near and far ranges and / or in front and side areas.

[0108] According to one embodiment, at least two of the radar radiation manipulating regions are arranged / configured in the same radar radiation manipulating device. This also enables extensive functional integration.

[0109] In particular, the different radar radiation manipulating regions may comprise at least one electrically conductive region and at least one electrically non-conductive region.

[0110] The radar radiation forms in particular a radiation front, which can be reflected by means of the arrangement according to the invention, in particular in the electrically conductive regions, so that an interference pattern can be predefined.

[0111] In the following, advantageous embodiments relating to the orientation of the radar module and / or the LiDAR module or relating to the arrangement of the radar module and / or the LiDAR module relative to other components are described.

[0112] According to one exemplary embodiment, an optical axis of the radar module and / or the LiDAR module or the radar antenna unit is oriented at least approximately vertically upwards (perpendicular) in the intended arrangement of the headlight. According to one exemplary embodiment, the optical axis of the radar module and / or the LiDAR module or the radar antenna unit is directed toward a radiation manipulator integrated into the headlight behind the headlight cover and arranged behind the light source in the radiation direction, wherein the optical axis of the radar module and / or the LiDAR module is aligned with the radiation manipulator such that the radar module and / or the LiDAR module is arranged at the bottom of the headlight. This also enables a local decoupling of the radar module and / or the LiDAR module from the light propagation path.

[0113] The relative placement of the radar module and / or the LiDAR module, with the antenna module and the radar module being designed as separate components in some embodiments and as an integrated component in others, remains relatively flexible, especially since it is separated from the exterior of the headlight. The relative placement described here has proven particularly advantageous.

[0114] Advantageous embodiments of the radar antenna unit are described below.

[0115] According to one embodiment, the radar antenna unit comprises a plurality of individual antennas or antenna arrays in a two-dimensional arrangement. This facilitates high variability in adjusting the radiation pattern.

[0116] According to one embodiment, the radar antenna unit is integrated into the radar module using microstrip lines without additional adapters. This also simplifies integration.

[0117] The radar module can, in particular, include all RF front ends and electronic components and circuits that can be manufactured on planar dielectric substrates. The antennas are advantageously all located at the base (bottom) of the headlight housing near the headlight cover, in particular in an arrangement that at least partially overlaps the headlight cover.

[0118] In an intermediate plane between the radiation manipulator for LiDAR radiation, or in particular for radar radiation, and the radar module, in particular in a direction / plane at least approximately orthogonal to the optical axis of the radar module, a radiation-effective cover is arranged, in particular to optically shield the radar module. The cover is advantageously made of a flat, thin plastic (in particular polycarbonate), which can be coated dark on one side. The cover is preferably arranged and configured to act as a heat shield for electronic components. This arrangement of the cover also provides a slim structural design.

[0119] In the following, advantageous embodiments relating to a radiation manipulator for LiDAR radiation, or in particular for radar radiation, of the arrangement according to the invention are described.

[0120] According to one embodiment, the multispectral emission device has a radiation manipulator for LiDAR radiation, or in particular for radar radiation, arranged behind the headlight cover and integrated into the headlight, wherein the radar module can be arranged below, above or to the side of the radiation manipulator for LiDAR radiation, or in particular for radar radiation.

[0121] A radiation manipulator for LiDAR radiation, or in particular for radar radiation, and optionally also a high-frequency lens as a component of the radar radiation manipulating device can adapt the radar radiation in the arrangement according to the invention in a particularly flexible manner (i.e., with high variability) according to the respective situation, in particular largely decoupled from the lighting function. If the radar system is integrated into a motor vehicle headlight, its radar signal can be tailored to the desired detection range, in particular by means of at least one structured conductive layer / surface (radiation deflection structure, in particular with patterns in the sense of functional microstructures) in the radar radiation manipulating device. Furthermore, the headlight of a motor vehicle can also assume a protective function for the radar technology, in particular thanks to the headlight cover.

[0122] According to one embodiment, the beam path of the radar radiation or LiDAR radiation is redirected by the radiation manipulator for LiDAR radiation, or in particular for radar radiation or LiDAR radiation, in the range of 60 to 120°, in particular in the range of 90°, in particular aligned at least approximately in the emission direction of the multispectral emission device. This also provides advantages with regard to the relative arrangement of the components.

[0123] According to one embodiment, the radiation manipulator for LiDAR radiation, or in particular for radar radiation, has a two-dimensional extension. This can also make the structure as simple and robust as possible.

[0124] According to one embodiment, the radiation manipulator, in particular its inner side, is arranged at an inclination in the range of 35° to 60°, in particular 40° to 50°, relative to the radiation direction z or relative to the horizontal, at least in sections. According to one embodiment, the radiation manipulator is arranged relative to the headlight cover such that the radiation manipulator and the headlight cover form a roof structure covering the radar module and / or the LiDAR module with the geometry of a gable roof with two oppositely inclined surfaces, in particular with an included angle in the range of 45 to 90°. This also provides an advantageous relative arrangement and can facilitate functional integration.

[0125] According to one embodiment, the arrangement and / or orientation of the radiation manipulator is motor-adjustable. This also allows for great variability and can expand the range of functions.

[0126] According to one embodiment, the radiation manipulator has a three-dimensional extension, at least in sections, and is configured to reflect radar radiation or LiDAR radiation laterally. This also expands functionality. In particular, high / broad functionality can be ensured using simple means even in a small installation space. According to one embodiment, the radiation manipulator for radar radiation is formed from a plurality of two-dimensional elements and thus has a two-dimensional extension for each element, or a two-dimensional or three-dimensional extension for all elements. This also provides high variability.

[0127] According to one embodiment, the radar radiation manipulator is designed as a Fresnel reflector, with both sides of the radar radiation manipulator having a frequency-selective radiation deflection structure. This allows for very targeted influence on the radiation characteristics.

[0128] According to one embodiment, the radiation manipulator for radar radiation consists of a substrate material transparent to light and radar radiation and has a radiation manipulator, in particular in the form of a coating or an electrically conductive surface, in particular with a frequency-selective radiation deflection structure. This can also ensure a particularly simple and robust construction. The at least one electrically conductive and light-transparent layer or surface can, regardless of its arrangement, be formed in particular from a light-transparent, electrically conductive oxide or a sufficiently thin metal layer, preferably made of silver.

[0129] According to one embodiment, the radiation manipulator comprises a radiation-manipulating device and is arranged relative to the headlight cover such that the radar radiation from the radar module or LiDAR radiation from the LiDAR module passes through / transmits a respective frequency-selective radiation deflection structure at least twice until outside the headlight cover. This also provides a high degree of variability. In other words: The radar radiation can be guided via a first filter provided by the radiation manipulator for radar radiation (first radiation deflection structure) and, after deflection, also via a second filter provided by the headlight cover (second or further radiation deflection structure).Analogously, the LiDAR radiation can be guided via a first filter provided by the radiation manipulator (first radiation deflection structure) and, after deflection, also via a second filter provided by the headlight cover (second or further radiation deflection structure).

[0130] According to one embodiment, the radiation manipulator for radar radiation is formed from individual reflector elements, each of which is rectangular or triangular, in particular with the same side length.

[0131] This provides a kind of modular structure for high variability, especially with a simple basic structure of each individual reflector element.

[0132] According to one embodiment, the radiation manipulator for radar radiation has a light-transparent, electrically conductive coating on at least one of its surfaces, in particular with one or more oxide layers or an electrically conductive surface. This provides good reflectivity for the wavelength of the radar radiation used. The radiation manipulator can be provided at least partially by means of the oxide layer. This type of integration of the radiation deflection structure provides not only comparatively high variability (keyword: influencing the nature of radiation propagation), but also advantages in terms of space requirements.

[0133] According to one embodiment, the radiation manipulator is light-transparent to radar radiation (transparent to LiDAR radiation or visible radiation, respectively). This also provides good variability in terms of positioning relative to the light source.

[0134] According to one embodiment, the LiDAR radiation modifier is transparent to radar radiation.

[0135] According to one embodiment, the radiation manipulator for radar radiation is configured to shape the radar radiation, particularly into a beam or area shape. This expands the possible applications.

[0136] The radiation manipulator for radar radiation can be made of a substrate material that is transparent not only to light but also to RF waves. In particular, the reflectivity can be adjusted or specified by coating one or two sides of the substrate with a very thin, transparent, conductive oxide.

[0137] The radiation manipulators are preferably located near the headlight housing, well in front of the light source. They are preferably positioned between the headlight cover and the beam-shaping optics.

[0138] The radar radiation manipulator is tilted or aligned so that the emitted RF waves can properly illuminate the intended objects and that the received waves can be focused on the receiving antenna.

[0139] In the following, advantageous embodiments relating to at least one of the radar radiation manipulating devices with a preferably frequency-selective radiation deflection structure are described.

[0140] According to one exemplary embodiment, at least one or the respective radar radiation manipulating device with a frequency-selective radiation deflection structure has, at least in sections, a periodic arrangement of structural patterns, with the structural patterns in particular arranged concentrically. This also enables the inventive arrangement to be designed and optimized with regard to individual applications in a particularly flexible manner. According to one exemplary embodiment, the radiation manipulator with a preferably frequency-selective radar reflection structure is designed as a coating, a film, or an electrically conductive surface. This can further simplify the structural design. In particular, a coating can also be provided as a supplement to integrated patterns or structures.

[0141] According to one embodiment, a polymer, in particular a polycarbonate, forms an advantageous substrate for the radiation manipulator or for the frequency-selective radar reflection structure. This provides a particularly robust structure, particularly in the form of a base module, which can be used and further adapted for various applications.

[0142] According to one embodiment, the radiation manipulator has a conductive part configured as a light-transparent, electrically conductive oxide layer. This also enables optimization of the reflection properties.

[0143] The radiation manipulator can have different designs, which are not limited to simple geometries (e.g. complementary loop, cross, stripe), but can also include more complex meander-based slits (especially for the bandpass), in particular to reduce the size of the unit cell and achieve better angular stability.

[0144] In the following, advantageous embodiments concerning the radiation manipulator and the carrier substrate for the radar radiation manipulating device are described.

[0145] According to one embodiment, the radiation manipulator consists of a material transparent to light and radar radiation, in particular a substrate material for the preferably frequency-selective radar reflection structure configured as an integrated coating. This enables even more extensive functional integration, especially in a robust design.

[0146] According to one embodiment, the radiation manipulator has a thickness corresponding to an integer multiple of half the wavelength of the emitted radar radiation. This also allows for optimization of the transmission properties.

[0147] According to one embodiment, a preferably frequency-selective radar reflection structure is provided on both sides (inside and outside) of the radiation manipulator. This facilitates a particularly targeted influence on the radiation characteristics.

[0148] According to one embodiment, the multispectral emission device is designed without a projection lens, with the radar beam path running from the radar module via the radiation manipulator for radar radiation and the headlight cover, the LiDAR beam path running from the LiDAR module via the radiation manipulator for radar radiation and the headlight cover, and the light propagation path running from the light source and the light reflector directly via the headlight cover, thus in each case without any further intermediate optical or radiation-effective components. In other words, the entire arrangement is lensless. This also provides a simple, compact, and robust design.

[0149] An example functional description is shown below.

[0150] Using the arrangement according to the invention, a transmitting and receiving array can be used to selectively scan the surroundings, covering not only the area ahead (frontal) but optionally also the side area (lateral). This also reduces the number of sensor systems required in the headlight. Furthermore, significantly improved resolution can be achieved. Particularly with laser-based structuring of thin films, a desired radiation deflection can be flexibly implemented, allowing the adaptation of the radar properties to the respective headlight type and the desired scanning area in the near and far fields to be optimized.

[0151] It has been shown that transparent plastic substrates can be coated with transparent, yet electrically conductive layers, which can then be removed locally. For the production of structures that can be individually designed for a specific application, a laser process for thin-film ablation can also be used, with the advantage of largely residue-free ablation without damaging the substrate and without optical disadvantages.

[0152] The radar reflection structure can be applied either lithographically and / or by masked coating and printing.

[0153] The aforementioned object is also achieved in particular by a multispectral emission device, in particular for vehicles, configured to emit light, LiDAR radiation, and radar radiation, and configured to detect at least reflected radar radiation and reflected LiDAR radiation, comprising a headlight with a light-transparent headlight cover and a light source arranged behind the headlight cover and a light reflector; a radar module arranged behind the headlight cover and integrated into the headlight, comprising a radar antenna unit and / or the LiDAR module; wherein the radar module and / or the LiDAR module is arranged in the emission direction z between the headlight cover and the light source, wherein the radar module and / or the LiDAR module is arranged below an optical axis or an axis corresponding to the main orientation of the light reflector or the light source,wherein the radar module and / or the LiDAR module is arranged in an area below, above, or to the side of the headlight cover in an overlapping arrangement with the headlight cover, wherein an optical axis of the radar module and / or the LiDAR module or the radar antenna unit is aligned at least approximately vertically upwards in the intended arrangement of the headlight, wherein the multispectral emission device has a radiation manipulator arranged behind the headlight cover and integrated into the headlight, wherein the radar module and / or the LiDAR module is arranged below, above, or to the side of the radiation manipulator, wherein the radiation manipulator for LiDAR radiation, or in particular for radar radiation, is arranged along the optical axis or an axis corresponding to the main orientation of the light source,wherein a / the beam path of the radar radiation is deflected by means of the radiation manipulator for radar radiation in the range of 60 to 120°, in particular in the range of 90°, in particular being aligned at least approximately in the emission direction z of the multispectral emission device, and wherein the radiation manipulator for radar radiation, in particular its inner side, is arranged at an inclination in the range of 35 to 60°, in particular 40 to 50°, relative to the emission direction z or relative to the horizontal, at least in sections. This results in numerous previously mentioned advantages.

[0154] The above-mentioned object is also achieved by using a multispectral emission device, in particular a previously described multispectral emission device, for emitting light, LiDAR and for preferably frequency-selective emission of radar radiation and for specifying a radar detection range by means of at least one, in particular by means of at least two radiation-manipulating devices, in particular frequency-selective reflection structures, which is / are provided at least in or on at least one side of a light-transparent and radar-transparent headlight cover of the multispectral emission device, in particular in the beam path emanating from a radar module and / or the LiDAR module in series one behind the other in at least two positions comprising a position outside or inside the light cone of the light source (e.g.on a radiation manipulator arranged above the radar module and / or the LiDAR module), in particular in a headlight of a vehicle, in particular in a headlight of an automobile, wherein a radar module and / or a LiDAR module of the multispectral emission device is arranged outside a light cone emitted by the light source, of which at least one, in particular below the at least two radiation-manipulating devices, with an optical axis of the radar module oriented upwards, in particular at least approximately orthogonal to the optical axis of a light source of the headlight. This results in the aforementioned advantages. The vehicle can be an automobile (motor vehicle for the road) or an aircraft or a watercraft. The above-mentioned object is also achieved by a multispectral emission device for vehicles and configured to emit light, LiDAR and radar radiation and configured to detect at least reflected radar radiation, with a headlight with a light-transparent and radar-transparent headlight cover and a light source and a light reflector arranged behind the headlight cover, and with a radar module arranged behind the headlight cover and integrated into the headlight with a radar antenna unit, in particular by a previously described multispectral emission device, produced by forming at least one radar radiation manipulating device, in particular in the form of a frequency-selective radar reflection structure, at least also on or in the headlight cover (optionally used / serving as a substrate),wherein the radiation manipulator has a conductive part in the form of a light-transparent, electrically conductive oxide layer or is at least partially formed thereby, and wherein a structural pattern is introduced into the radiation manipulator by thin-film ablation, in particular by means of a laser, for example an ultrashort pulse laser with pulse durations in the femtosecond to picosecond range or in the nanosecond range with wavelengths adapted to the layer's absorption, in particular but not exclusively in the ultraviolet wavelength range or in the visible wavelength range.

[0155] This results in the aforementioned advantages. It has been shown that laser-imposed structures allow the direction and radiation characteristics of radar radiation to be controlled, adjusted, and specified with particular precision.

[0156] The aforementioned object is also achieved by a method for emitting light, LiDAR and radar radiation and for detecting at least reflected radar radiation, in each case by means of a multispectral emission device, in particular by means of a previously described multispectral emission device, in particular in a vehicle, wherein light from a light source of a headlight is emitted through a headlight cover that is transparent to light and to radar radiation in accordance with the direction of an optical axis of the light source, and wherein radar radiation and / or LiDAR radiation is emitted by a radar module arranged behind the headlight cover integrated in the headlight and / or the LiDAR module;wherein the radar radiation and / or LiDAR radiation is emitted by the radar module and / or the LiDAR module in a direction transverse, in particular at least approximately orthogonal, to the optical axis of the light source and is deflected into at least one emission direction of the multispectral emission device via at least one radar radiation manipulating device provided at least on or in the headlight cover, in particular in the form of a frequency-selective radar reflection structure, in particular at least approximately parallel to the optical axis of the light source, in particular in the direction of travel of a vehicle aligning the headlight, wherein the radiation characteristics of the radar radiation are predetermined by means of the at least one radar radiation manipulating device. This results in the aforementioned advantages.

[0157] According to one embodiment, the method also includes detecting reflected radar radiation, with the reflected radar radiation being detected, in particular, along the opposite beam path. This also expands the range of functions.

[0158] According to one embodiment, a structural pattern is introduced into the radiation manipulator by thin-film ablation or thin-film deposition. This can be done, for example, by laser ablation, by means of a film, by means of a printing, coating, or vapor deposition process (sputtering, thermal evaporation, and / or electron beam evaporation), and / or by means of lithography.

[0159] According to one embodiment, the radiation manipulator is manufactured by means of thin-film ablation or by means of thin-film deposition or by applying a film. SHORT DESCRIPTION OF THE CHARACTERS

[0160] Further advantageous aspects and preferred embodiments of the invention can be found in the following illustration of preferred embodiments of the invention. The invention is described in more detail in the following drawing figures, wherein reference numerals not explicitly described in a particular drawing figure refer to the other drawing figures. They show: Figure 1 shows a perspective view in a schematic representation of a multispectral emission device according to an advantageous embodiment; Figure 2 shows a schematic side view of a multispectral emission device according to an advantageous embodiment; Figure 3 shows the Figure 1illustrated multispectral emission device with representation of the beam path, the highlighted bearing points for a bearing point LiDAR reflector and manipulator and a radar reflector and manipulator; Figure 4 an aggregation and fusion of radar (iso lines) and LiDAR measurement data to increase the reliability and robustness of sensor data in ADA systems using a multispectral emission device according to the invention; Figure 5 a functional principle of a LiDAR system for distance measurement with transmitter (light source with transmitting optics, e.g.VCSEL array) with receiver (sensor with receiving optics) as a component of a multispectral emission device according to the invention and associated electronic components; Figure 6 is an illustration of a resulting reduction in spectral reflection using a suitable one-sided coating; Figure 7 is a schematic diagram of a phase-shifting structure suitable for phase control of an incident wave; Figure 8 is a diagram relating to a dependence of the phase on the patch size in mm; Figure 9 is a reflect array according to the invention; Figure 10 is a schematic diagram of the deflection of electromagnetic waves by the device shown in . Figure 10 represented array. DETAILED DESCRIPTION OF THE FIGURES

[0161] Figure 1shows in a perspective view in a schematic representation a multispectral emission device, in particular for vehicles, designed to emit electromagnetic radiation and designed to detect at least reflected radar radiation, with: a headlight (101) with a light-transparent headlight cover and a light source (102) arranged behind the headlight cover; a radar module (111) arranged behind the headlight cover and integrated into the headlight, said radar module having a radar antenna unit, wherein the multispectral emission device has at least one radiation-manipulating device.

[0162] This multispectral emission device is characterized in that it has at least one transmitting unit for LiDAR radiation (150, 150a) and a receiving unit for LiDAR radiation (150, 150b) and at least two radiation manipulators (130, 140), wherein one of the radiation manipulators (130) is a frequency-selective LiDAR beam radiation manipulating device, at least one radiation manipulator for radar radiation (140) is a frequency-selective radar radiation manipulating device, wherein the radiation manipulator for LiDAR radiation (130) and the transmitting unit for LiDAR radiation (150, 150a) are arranged such that the radiation manipulator for LiDAR radiation (130) emits redirects LiDAR radiation such that at least one radiation cone for redirected LiDAR radiation is parallel and coaxial to a light cone emitted by the light source (102),wherein a radiation manipulator (140) for radar radiation is a frequency-selective radar radiation manipulating device, wherein the radiation manipulator for radar radiation (140) and the radar module (111) are arranged such that the second radiation manipulator (140) redirects radar radiation emitted by the radar module (111) such that at least one radiation cone for redirected radar radiation runs parallel and coaxial with the light cone emitted by the light source (102), that the radiation manipulator for LiDAR radiation (130) is configured such that LiDAR radiation passing through the headlight cover from the outside is guided to the receiving unit for LiDAR radiation (150, 150b), and that the radiation manipulator for radar radiation (140) is configured such thatthat radar radiation passing through the headlight cover from the outside is guided to the radar radiation receiving unit (111). This is preferably carried out coaxially and particularly preferably over four wavelength ranges.

[0163] In Fig. 1A headlight 101 is shown, which has a light source 102 (optionally also a projection lens) and, in individual embodiments, a light reflector not shown here. Furthermore, the headlight 101 has a light-transparent headlight cover 104. The light source 102 is aligned along an optical axis 7 (main alignment) such that the light is emitted through the headlight cover 104 in a light cone 109. This results in a light propagation path 106, which, starting from the light source 102, runs frontally forward and is laterally delimited by the specifications of the light reflector. According to one variant, the light propagation path 106 is a light cone.

[0164] It is particularly advantageous to use 102 lighting modules with short overall lengths as the light source. Irregular, micro-optical honeycomb condensers as beam-shaping tertiary optics for collimated LED light sources are particularly advantageous. The presented design architecture enables the smallest module apertures (and thus small dimensions of the radiation manipulator with flexible contour design) and the shortest overall lengths with high system transmission, allowing compliance with ECE standards for headlights and switchable angular distributions for glare-free lighting.

[0165] The flexibility in the design of the contour of the exit windows of the lighting modules allows, on the one hand, optimal adaptation to the minimum radiation manipulator size specified by the LiDAR and radar, and on the other hand, it helps to meet the design specifications of automobile designers (e.g. slit-shaped headlights).

[0166] The Figure 1 The exemplary implementation shown can nest either both modules or just one, preferably the weaker divergent high beam, with the LiDAR and radar beam paths. Limiting the module to just one reduces the required radiation manipulator dimensions. The preferential selection of the transmissive path for the broadband illumination (450-650 nm) facilitates the design and implementation of the radiation manipulator.

[0167] The typical drop in transmission of the radiation manipulator at large angles can be accommodated in the design of the lighting module. The scattered light and back reflections generated by the radiation manipulators remain critical. Optimized radiation manipulator designs, optionally combined with shielding panels, enable compliance with ECE specifications, for example, for the contrast of the cut-off line of the low beam. Optional synchronized blanking of the LEDs during the short time window of LiDAR reception results in a brightness reduction of only one or a few percent, but enables a significant improvement in the LiDAR SNR.

[0168] They refer to: 150 Combined transmitter unit for LiDAR radiation and a receiver unit for LiDAR radiation 150a Transmitter unit for LiDAR 150b Receiver unit for LiDAR

[0169] The use of radiation manipulators enables a space-efficient and design-friendly solution for up to 360° detection in vehicles through implementation in the headlight. An example of a design in a headlight (also suitable for integration in the rear headlight) shows the ranges of electromagnetic radiation depending on the wavelength. For example, a planar reflector shapes and reflects the LiDAR radiation, while a curved reflector deflects the radar radiation without affecting the LiDAR radiation's transmission. The reflect / transmit arrays can be of any shape (planar, radially curved, oval curved), including a flexible pattern array of the coating, so that, for example, central pixels receive a smaller / larger field of view (FOV) than edge pixels of the LiDAR / radar system. Both components of the radiation manipulator allow the light from the headlight to be transmitted.The shape and position of the emitters (sensor-transmitter unit) and the deflectors or beam formers (radiation manipulators) are exemplary and may vary.

[0170] Figure 2 shows the Fig. 1 shown multispectral emission device in a schematic representation in side view.

[0171] Furthermore, the embodiments according to the Figure 2 the use of a micro-optic 160.

[0172] Figure 2 and Figure 3 show additional movement possibilities at bearing points 135 and 145. These enable focusing of objects at different ranges in the respective direction, determined by the rotational movement, which is accompanied by an increase in the resolution quality of objects. Figure 4 illustrates the translational movements coupled with the rotational movements.

[0173] Figure 4demonstrates a coaxial integration of radar and LiDAR in the headlight using radiation manipulators. This results in the provision of 3D sensors with a shared field of view. The fusion of sensor measurement data thus enables the detection of road users using different technologies, which significantly increases the reliability and robustness of driver assistance systems.

[0174] The aggregation and fusion of radar (iso-lines) and LiDAR measurement data to increase the reliability and robustness of sensor data in ADA systems using a multispectral emission device according to the invention.

[0175] Figure 5shows a functional principle of a LiDAR system for distance measurement with a transmitter (light source with transmitting optics, e.g., VCSEL array) with a receiver (sensor with receiving optics) as part of a multispectral emission device according to the invention and associated electronic components; preferably, the headlight contains a LiDAR system for distance measurement. The LiDAR system consists of a transmitter (light source with transmitting optics, e.g., VCSEL array), a receiver (sensor with receiving optics), and the associated electronics (see Figure 1). The electronics are used to control the light source, read out data from the sensor and process the data down to distances, which can be used for further processing in the vehicle electronics or direct visualization. The light source has a wavelength preferably in the near-infrared range of 800-1550 nm. It is set to any pattern using the transmitter optics, e.g. point, line or area illumination. This allows specific gaps in the left or right field of view to be controlled for cornering, comparable to the already established headlight control. In addition, any individual regions of interest within the field of view can be illuminated (region of interest, ROI) for quick, more detailed follow-up measurements. The emitted light is reflected by targets in the vehicle's surroundings and captured by the receiver optics.A coaxial LiDAR system, in which the same optics are used for both the transmitter and receiver, or a biaxial system, in which the transmitter and receiver have separate optics, is possible. In the case of a flash LiDAR system, the receiving optics are rigid and therefore more robust against mechanical influences. To achieve this, care should be taken to ensure that the receiver FoV (field of view) is smaller than or equal to the transmitter FoV. In the case of a scanning LiDAR system, the entire FoV is scanned according to a specific pattern. The transmitted pattern can be realized using VCSEL arrays without moving parts and is therefore more robust against mechanical influences. Alternatively, both the transmitter FoV and the receiver FoV can be controlled using mirrors, which are more susceptible to mechanical influences but allow for more precise control.The receiving sensor should perform data readout and processing only for each illuminated pixel. This more efficient readout allows for more measurements for each captured frame or a higher frame rate.

[0176] The radiation manipulator 130 includes a LiDAR reflector, which is installed in both the transmit and receive paths of the LiDAR system. The LiDAR reflector reflects in the near-infrared range, but neither in the visible range of the headlight beam nor in the wavelength range of the radar signal. The LiDAR reflector can be curved for additional beam deflection or be planar. For targeted alignment of the LiDAR FoV, the LiDAR reflector can be aligned by rotation in all three spatial directions, whereby rotation around the axis along the headlight beam is only relevant for curved LiDAR reflectors. For this purpose, the LiDAR light is best directed centrally onto the LiDAR reflector. Therefore, a translational shift of the LiDAR reflector in all three spatial directions is also useful. This is also required if the LiDAR reflector is curved in such a way that only a certain orientation is possible.Due to its rotating properties, the LiDAR reflector could be used multifunctionally as a mirror for a 1D or 2D scanning LiDAR system, with both resonant and quasi-static operation of the LiDAR reflector alignment conceivable. Under any LiDAR reflector movement and therefore at virtually any angle of incidence, it must still be ensured that the near-infrared range is reflected while the visible light and radar wavelength range are transmitted. The individually switchable VCSEL arrays enable highly selective detection of the surroundings.

[0177] This LiDAR system is particularly suitable for use in the multispectral emission device according to the invention. The LiDAR system comprises a transmitter for LiDAR radiation with a VCSEL array 205 and an optical device 210 for radiation deflection. This system is integrated into the multispectral emission device according to the invention in such a way that light pulses from it can strike a target 220 and the light signals reflected by the target 220 can be received by a receiving unit. The receiving unit for the reflected LiDAR radiation preferably comprises an optical device 230 and a sensor 240.

[0178] A measurement process 250 is performed to measure the time between the emission of a light pulse and its impact on the target 220. Using a conventional time-of-flight analysis, the distance between the LiDAR radiation transmitter and the target 220 can be determined. The evaluation is performed via evaluation electronics 270.

[0179] A method for producing the multispectral emission device, in particular the radiation manipulators 130, 140, is presented below.

[0180] The coaxial integration of radar, LiDAR, and light in a single headlight poses particular challenges for the required optical coatings and their manufacturing technology. The well-known coating technology of physical vapor deposition (PVD), particularly magnetron sputtering, is further developed according to the invention to allow the targeted adjustment of morphological layer properties that enable / favor the laser structuring of the layer system, thus contributing, for example, to the formation of smooth, clean edges of the laser-structured surface topographies in the optimized laser structuring process. Furthermore, coatings require particularly good layer adhesion to the substrate material for good laser structuring quality. In the automotive sector, this is usually a polymer for weight reasons.This results in the requirement that the significant differences in the thermal expansion behavior of the brittle-hard, mostly inorganic coating and the polymer substrate must be exceeded by the particularly stable adhesion forces in order to complete the structuring process without failure of the layer adhesion.

[0181] Laser structuring primarily serves to manipulate radar waves by creating a Fresnel zone optic, preferably on transparent conductive oxide layers (e.g., AZO, ITO, etc.) or thin metal layers (e.g., Ag, etc.). The challenge for radar-optically effective coatings lies solely in combining the layer's conductivity with its required optical transparency of ≥85% in the visible spectral range.

[0182] However, in the application described here, the coaxial integration of radar, LiDAR, and light in a single headlight, this requirement must be extended to all optical layers in the system: the conductive layers for radar beam deflection must be combined with additional dielectric optical materials in multilayer systems to ensure the required spectral properties of all participating sensor systems and the illumination equally in the coaxial beam path. This results in the requirement to develop multilayered designs at multiple positions in the radiation manipulator beam path, enabling the transmission of the vehicle lighting in the VIS, the reflection or transmission of the LiDAR wavelengths, and the optical manipulation of the radar beam path.This results in a crucial innovation for optical coating: by embedding the radar-optically effective conductive layers in additional dielectric materials to combine all these requirements, the optical multilayer systems must now exhibit favorable properties for laser structuring overall, not "only" the radar-effective conductive layers.

[0183] To achieve the radiation-manipulating properties, particularly of the radiation manipulators 130, 140, optical multilayer systems are used. These consist of alternating layers of two or more layer materials, which should exhibit a suitable – usually as significant as possible – difference in their refractive indices. By alternating thin layers of suitable individual layer thicknesses, layer stacks can be designed that specifically influence the spectral distribution of the transmitted and reflected light. The goal of this design optimization work on such multilayer systems is the adjustment of constructive or destructive interference of the light waves in the specifically used wavelength ranges. This can, for example,Depending on the application, this can be a reflector (= constructive interference in reflection → reduced transmission), an anti-reflection system (destructive interference in reflection → increased transmission) or an optical filter with, for example, a band or edge filter function for specific wavelength ranges.

[0184] Particularly suitable materials are, for example, SiO2 and ZrO2, TiO2, Ta2O5, Nb2O5 or Si3N4, which are preferably applied alternately to a carrier substrate and thus have tailor-made radiation-manipulating properties including anti-reflection systems.

[0185] Figure 6 For example, shows an illustration of a resulting reduction in spectral reflectance using a suitable one-sided coating, resulting in a significant reduction in reflectance over a wide wavelength range.

[0186] Another special requirement for the optical coating is the particularly large optical bandwidth: Due to the different wavelength ranges in which radar and LiDAR are manipulated and the vehicle lighting in the visible spectral range must be transmitted through the entire coaxial system with almost no loss and without color shift, an optical specification results for the entire wavelength range between 400 nm and 4 mm, i.e. over 4 orders of magnitude.

[0187] Furthermore, the optical multilayer systems ensure their spectral performance for radar, LiDAR, and illumination over particularly oblique angles of incidence and wide angle ranges. This complicates the development of newly developed optical multilayer designs, for example, increasing the number of required layers, thus competing with the requirements for ensuring good laser structuring.

[0188] The combination of all these requirements in a laser-structurable multilayer coating system for the coaxial beam path is new in the field of optical coating design and manufacturing.

[0189] Figure 7 shows a schematic diagram of a phase-shifting structure suitable for phase control of an incident wave, comprising a substrate 400 and a conductive structure 410 applied to one surface of the substrate 400 and a conductive ground plane 420 applied to another surface of the substrate 400.

[0190] Figure 8 shows a diagram regarding the dependence of a phase 500 on the patch size in mm.

[0191] The requirements to be achieved are preferably: ▪ Phase control of the incident wave using phase-shifting structures ▪ Reflective: patches, circles, crosses, ... ▪ Diffractive: stripes, rings, ... ▪ Challenges: ▪ Covering the entire phase angle range (0° - 360°) ▪ Avoiding the dependence of the structure dimensions on excessive phase variation (manufacturing tolerances!) ▪ Low phase variation in the frequency range 76 - 81 GHz.

[0192] Figure 9shows a reflect array 600 according to the invention with patch sizes adapted to desired phase positions. This reflect array 600 is a preferred embodiment of a radiation manipulation device. It is preferably a circuit board-like structure with a transparent substrate in the center and a conductive, transparent structured coating on the outer sides. Squares (patches) are structured on the top side, while the underside is continuously conductive (ground plane). Measurements have shown that this allows a deflection of the wave by 90°, even though the reflector / radiation manipulator is arranged at an angle of 56.8°. This is possible because each patch of the radar radiation adds a previously calculated phase shift, resulting in a 90° reflection. Due to the transparency, light and LiDAR can pass through the structure.

[0193] Figure 10shows a schematic diagram of the deflection of electromagnetic waves by the Figure 9 represented array.

[0194] The beam path 19 of the propagating radar radiation or RF wave emitted by the radar module 12 initially runs transversely to the radiation direction x, in particular at least approximately orthogonal thereto and / or at least approximately in the vertical direction, and is then deflected by approximately 90° by means of the radiation manipulator for LiDAR radiation, or in particular for radar radiation 13, wherein a detection area 8 is defined by means of the radiation manipulator for LiDAR radiation, or in particular for radar radiation, and / or by means of a respective radiation deflection structure 13, 140.

[0195] The arrow z in Fig. 2indicates the radiation direction (emission direction) or the corresponding longitudinal position of a respective component in the radiation direction, wherein the respective longitudinal position is detected, for example, starting from the light source. The radar module and the radiation manipulator for LiDAR radiation, or for radar radiation, and optionally also the antenna unit are arranged in at least approximately the same longitudinal position z. The headlight cover 104 extends rearward (to the rear) to a longitudinal position smaller than the longitudinal position of the radar module and the radiation manipulator for LiDAR radiation, or for radar radiation. In other words: The headlight cover not only overlaps the radar module and the radiation manipulator for LiDAR radiation, or for radar radiation, but completely covers these two components in the radiation direction.

Claims

1. Multispectral sensor headlight system with a Multispectral emission device (110), in particular for vehicles, set up for emitting electromagnetic radiation and set up for detecting at least reflected radar radiation, with: a headlight (101) with a light-transparent headlight cover (4) and a light source (102) arranged behind the headlight cover for emitting visible light as headlight light; a radar module (111) arranged behind the headlight cover and integrated in the headlight, having a radar antenna unit, the Multispectral emission device having at least one radiation-manipulating device, wherein the Multispectral emission device comprises at least one transmitting unit for LiDAR radiation (150, 150a) and one receiving unit for LiDAR radiation (150, 150b) and at least two radiation manipulators (130, 140), wherein one of the radiation manipulators (130) is a LiDAR radiation manipulating device, at least one radiation manipulator (140) for radar radiation is a radar radiation manipulating device, wherein the radiation manipulator for LiDAR radiation (130) and the transmitting unit for LiDAR radiation (150, 150a) are arranged such that the radiation manipulator for LiDAR radiation (130) redirects LiDAR radiation emitted by the transmitting unit for LiDAR radiation (150, 150a), that the radiation manipulator for LiDAR radiation (130) is arranged such that LiDAR radiation passing through the headlight cover from the outside is guided to the receiving unit for LiDAR radiation (150, 150b) and that the radiation manipulator for radar radiation (140) is arranged such that radar radiation passing through the headlight cover from the outside is guided to the receiving unit for radar radiation (111) and wherein the transmitting unit for LiDAR radiation (150, 150a), the radiation manipulator for LiDAR radiation (130), the radar module (111) and the second radiation manipulator (140) are arranged in such a way that at least one radiation cone of the diverted LiDAR radiation (104) and at least one radiation cone of the diverted radar radiation can be aligned, wherein the Multispectral emission device is connected to a control unit, characterised in that the control unit is arranged to control the radiation manipulators (130, 140) during operation of the Multispectral emission device such that the radiation manipulators (130, 140) are each rotated independently of one another about at least one axis, so that FOVs of the LiDAR radiation and the radar radiation are set independently of each other by the separate rotation of the at least two radiation manipulators (130, 140) and that the separate rotation of the radiation manipulators (130, 140) is used to increase the detection accuracy of objects.

2. Multispectral sensor headlight system according to claim 1, characterised in that a combination of wavelengths over 4 orders of magnitude, 400 nm to 4 mm, takes place.

3. Multispectral sensor headlight system according to claim 1 or claim 2, characterised in that at least one radiation cone of the redirected LiDAR radiation (104), at least one radiation cone of the redirected radar radiation and a radiation cone of the headlamp light run parallel to one another and / or coaxially and / or overlap.

4. Multispectral sensor headlight system according to any one of claims 2 or 3, characterised in that at least one radiation cone of the redirected LiDAR radiation (104) and at least one radiation cone of the redirected radar radiation additionally overlap.

5. Multispectral sensor headlight system according to any one of the preceding claims, characterised in that the radiation cone of the headlamp light runs coaxially to the radiation cones of the LiDAR and radar radiation.

6. Multispectral sensor headlight system according to any one of the preceding claims, characterised in that the radiation manipulator for LiDAR radiation (130) is designed such that LiDAR radiation emitted by the transmitting unit for LiDAR radiation (150, 150a) is redirected such that at least one further radiation cone for redirected LiDAR radiation is formed, and in that at least one further receiving unit for LiDAR radiation is provided, wherein the further receiving unit for LiDAR radiation is arranged in such a way that further LiDAR radiation passing through the headlight cover from the outside is guided to the receiving unit for further LiDAR radiation.

7. Multispectral sensor headlight system according to any one of the preceding claims, characterised in that the radiation manipulator for radar radiation (140) is designed such that radar radiation emitted by the radar module (111) is redirected such that at least one further radiation cone for redirected radar radiation is formed and in that at least one further receiving unit for radar radiation is provided, the further receiving unit for radar radiation being arranged such that further radar radiation passing through the headlight cover from the outside is guided to the receiving unit for further radar radiation.

8. Multispectral sensor headlight system according to any one of the preceding claims, characterised in that at least one of the radiation manipulators (130, 140) is rotatably mounted about a z-axis, which extends at least approximately in the radiation direction of the Multispectral emission device, during assembly of the Multispectral emission device.

9. Multispectral sensor headlight system according to any one of the preceding claims, characterised in that at least one of the radiation manipulators (130, 140) is rotatably mounted about a y-axis during operation of the Multispectral emission device, so that the FOV can be quickly and reliably adjusted in the horizontal direction.

10. Multispectral sensor headlight system according to any one of the preceding claims, characterised in that at least one of the radiation manipulators (130, 140) is rotatably mounted about an x-axis during operation of the Multispectral emission device, so that the FOV can be quickly and reliably adjusted in the vertical direction.

11. Multispectral sensor headlight system according to any one of the preceding claims, characterised in that at least one of the radiation manipulators (130, 140) is mounted in a translatory manner.

12. Multispectral sensor headlight system according to any one of the preceding claims, characterised in that the transmitting unit for LiDAR radiation (150, 150a) is thermally insulated, so that a temperature-dependent wavelength drift of the LiDAR transmitting unit is avoided.

13. Multispectral sensor headlight system according to any one of the preceding claims, characterised in that a structure pattern has been introduced into the radiation manipulator by thin-film ablation or thin-film application, or wherein the radiation manipulator has been produced by thin-film ablation or thin-film application or by application of a film.

14. Method of manufacturing a Multispectral emission device for a multispectral sensor headlight system according to any one of the preceding claims, characterised in that by forming at least one radar radiation manipulating device, in particular in the form of a frequency-selective radiation deflection structure, wherein the radiation manipulator has a conductive part in the form of a light-transparent, electrically conductive layer or is at least partially formed thereby, and wherein a structural pattern for generating a targeted reflection of the radar wavelengths is introduced into the radar radiation manipulator by thin-film ablation, in particular by means of a laser and further characterised by the formation of at least one LiDAR radiation manipulator, in particular in the form of a frequency-selective radiation deflection structure, wherein the LiDAR radiation manipulator has a conductive part in the form of a light-transparent, electrically conductive layer or is at least partially formed thereby.

15. Method of operating a Multispectral emission device of a multispectral sensor headlight system according to any one of claims 1 to 13, wherein the headlight light radiation is emitted in the form of a light cone and the LiDAR radiation is emitted in the form of a primary LiDAR signal as focussed electromagnetic radiation in a LiDAR radiation cone (104), that radar radiation is emitted in the form of a primary radar signal as focussed electromagnetic radiation in a radar radiation cone wherein the headlight radiation cone, the LiDAR radiation cone and the radar radiation cone extend parallel and coaxially to one another, wherein secondary LiDAR signals reflected by at least one object and secondary radar signals reflected by the object are detected and analysed, wherein individual, several or all of the following information is obtained from the analysis: - an angle or a direction to the object - a distance to the object (̵from the time difference between transmission and recipient)̵ - a relative movement between the Multispectral emission device and the object whereby parallelism and coaxiality of the LiDAR radiation cone and the radar radiation cone are taken into account in the evaluation, wherein the Multispectral emission device is connected to a control unit, characterised in that the control unit controls the radiation manipulators (130, 140) during operation of the Multispectral emission device in such a way that the radiation manipulators (130, 140) are each rotated independently of one another about at least one axis, so that FOVs of the LiDAR radiation and the radar radiation are set independently of each other by the separately occurring rotation of the at least two radiation manipulators (130, 140) and that the separately occurring rotation of the radiation manipulators (130, 140) is used in real time to increase the detection accuracy of objects.

16. Method according to claim 15, characterised in that at least one further LiDAR radiation cone and / or one further radar radiation cone is emitted so that the object is detected with angular resolution.

17. Method for operating a Multispectral emission device of a multispectral sensor headlight system according to one of claims 1 to 13 with the characteristics of claims 15 or 16, characterised in that wavelength-selective structures are used which influence sensor-specific spectral ranges and thereby reduce thermal effects due to undesired absorption.

18. A vehicle comprising a multispectral sensor headlight system comprising a Multispectral emission device (110) according to any one of claims 1 to 13 and a unit for a fusion of sensor measurement data for radar and LiDAR, characterised in that the control unit is arranged to control the radiation manipulators (130, 140) during operation of the Multispectral emission device such that the radiation manipulators (130, 140) are each rotated independently of one another about at least one of the axes, so that FOVs of the LiDAR radiation and the radar radiation are set independently of each other by the separately occurring rotation of the at least two radiation manipulators (130, 140) and that the separately occurring rotation of the radiation manipulators (130, 140) is used to increase the detection accuracy of objects.