Multispectral emitting device for a vehicle for emitting visible light, LiDAR, and radar radiation, and method and use thereof - Patents.com

Abstract

The present invention relates to a multispectral emitting device (110). According to the present invention, the multispectral emitting device (110) comprises at least one transmitting unit (150, 150a) for LiDAR radiation, one receiving unit (150, 150b) for LiDAR radiation, and at least two radiation manipulators (130, 140), one of the radiation manipulators (130) being a LiDAR radiation manipulating device and the at least one radiation manipulator (140) for radar radiation being a radar radiation manipulating device, the radiation manipulator (130) for LiDAR radiation and the transmitting unit (150, 150a) for LiDAR-S being configured such that the radiation manipulator (130) for LiDAR radiation redirects the LiDAR radiation emitted by the transmitting unit (150, 150a) for LiDAR radiation. the radiation manipulator (130) for LiDAR radiation is set up such that external LiDAR radiation that has passed through the headlamp cover is guided to the receiving unit (150, 150b) for LiDAR radiation, the radiation manipulator (140) for radar radiation is set up such that external radar radiation that has passed through the headlamp cover is guided to the receiving unit (150, 150b) for radar radiation, and the transmitting unit (150, 150a) for LiDAR radiation, the radiation manipulator (130) for LiDAR radiation, the radar module (111), and the second radiation manipulator (140) are configured such that at least one radiation cone (104) of the redirected LiDAR radiation and at least one radiation cone of the redirected radar radiation can be aligned.

Description

[Technical field]

[0001] The present invention relates to a multispectral emitting device, in particular for a vehicle, configured for detecting driving situations in a detection area by radar radiation and for detecting driving situations in a detection area by optical radiation, configured for emitting light, radar radiation and LiDAR radiation, in particular for the purpose of supporting navigation of the vehicle. In particular, the present invention also relates to a method for emitting optical 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 emitting device for electromagnetic radiation in a wide wavelength range spanning four orders of magnitude. In particular, the present invention relates to a device and a method according to the general terms of the respective independent claims. [Background technology]

[0002] Attempts have already been made to create a combined device with integrated functions of lighting and radar and LiDAR radiation with a high level of practical suitability, especially for vehicle headlights. Space requirements and robustness are key requirements when designing headlights, especially for vehicles. The combined use of light and radar radiation has proven to be particularly advantageous for relative position detection in passenger transport. Driver assistance systems such as adaptive distance control, lane departure warning systems, and emergency braking systems are currently used in all vehicle classes, especially passenger cars. However, such systems also benefit the maritime and aviation industries and are already in use or at least being tried out. Radar and LiDAR technologies are particularly focused on different distance ranges and measurement situations for distance, speed, and angle measurement. However, there is a question as to which positions in the vehicle the radar and LiDAR technologies can be positioned detectably and interact with other detection components. The traditional integration of radar technology in the bumper of a road vehicle entails a high risk of damage, especially in the case of minor impacts and slight contact between the vehicle and its surroundings. On the other hand, integration in the radiator area requires compromises in terms of vehicle design. Another challenge when integrating radar components into a vehicle (especially a car), especially in the front section, is to compensate for the attenuation of the transmitted and received signals in the individual material layers (especially the bumper) and paint layers. Usually, artifacts and echo images in the radar signal have to be eliminated. In other words, the accurate evaluation of the radar signal is not easy depending on the application. On the other hand, LiDAR systems require an optically transparent radiation path with respect to the environment, and therefore cannot be located behind opaque vehicle components such as the bumper. Here, solutions exist to either integrate the measurement system into the radiator grille with a transparent cover or to configure the measurement system behind the windshield.

[0003] The Applicant's International Patent Application No. WO2020 / 079060A1 discloses a multispectral emitting device, in particular for a vehicle, set up to emit light and radar radiation and set up to detect at least reflected radar radiation, comprising: The headlamp comprises a light-transmitting headlamp cover and a light source arranged behind the headlamp cover, and a radar module arranged behind the headlamp cover integrated in the headlamp and having a radar antenna unit, characterized in that the multispectral emitting device has at least one radar radiation manipulating device, in particular a frequency-selective radar radiation manipulating device.

[0004] This known device has the advantage that it optimizes the emission of light and radar radiation and the detection of reflected radiation by headlights, in particular for a vehicle or automobile, and furthermore, it realizes the emission of light and radar radiation and the detection of reflected radar radiation, allowing both light and radar radiation to be combined with one another in an integrated design and used in a common device for navigation of the vehicle, which also entails advantageous side effects, in particular with regard to design and space requirements or with regard to the possible range of applications, but also with regard to the high reliability of the technology.

[0005] There is also a need to provide sensor systems with an extended wavelength spectrum, especially a multispectral wavelength range from visible light to millimeter waves.

[0006] Based on this state of the art, there is interest in configurations and methods for optical radiation combining an extended wavelength spectrum and radar radiation, which can achieve further advantages and further increase the benefits for road users.

[0007] The applicant's German patent application DE 10 2018 217 215 A1 discloses a light source arrangement for generating a light cone from light whose divergence in a first transverse direction (y) is less than in a second transverse direction (x), perpendicular to the first transverse direction; and an inclined beam headlamp with first, second and third lens arrays arranged adjacent to each other along the second transverse direction (x) for emitting at the output side an inclined beam of light (102) illuminated in each case at an input side by an associated one of the segments (12a, 12b, 12c) of the light cone (12) arranged adjacent to each other in the second transverse direction and having a modified light intensity angular distribution with respect to the light cone (12).

[0008] The applicant's German patent application DE 10 2018 217 213 A1 discloses a high beam headlamp comprising 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, the light source array comprising a first light source and at least one second light source, the collimated light of the first light source of the light source array resulting in a crosstalk-free transmission through 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 resulting in a transmission through the honeycomb condenser with channel crosstalk and illumination of a second far field segment that is obliquely aligned with respect to the first far field segment. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] International Publication No. 2020 / 079060 [Patent Document 2] DE 102018217215 A1 [Patent Document 3] DE 102018217213 Summary of the Invention [Problem to be solved by the invention]

[0010] The problem is to provide a device and a method, in particular in a vehicle or automobile, which allows optimizing the emission of illumination light radiation, LiDAR radiation and radar radiation, and the detection of LiDAR and radar radiation reflected by the headlamps, in particular 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 can be used in combination with each other in an integrated design in a common device for the navigation of the vehicle, in particular also with advantageous side effects in terms of design and space requirements, or in terms of the range of possible applications, or in terms of high reliability of the technology.

[0011] This problem is solved by a multispectral emitting device according to claim 1 and by a method according to the respective secondary method claims. Advantageous further embodiments of the invention are described in the respective dependent claims. The features of the embodiments described below can be combined with one another, unless expressly denied. [Means for solving the problem]

[0012] According to the invention, in particular for vehicles, e.g. land vehicles, aircraft, ships and submarines, a multispectral emitting device is provided which is set up to emit electromagnetic radiation and set up to detect at least reflected radar radiation and reflected LiDAR radiation, the multispectral emitting device having: for visible light, such as headlamp light, a light source arranged behind the headlamp cover, which is translucent, for visible light, such as headlamp light, a headlamp cover and a light source arranged behind the headlamp cover.According to the invention, a multispectral emitting device, in particular for a vehicle, is set up for emitting electromagnetic radiation and is configured for detecting at least reflected radar radiation, comprising a headlamp with a light-transmitting headlamp cover and a light source arranged behind the headlamp cover for emitting visible light as light of the headlamp; a radar module arranged behind the headlamp cover and integrated in the headlamp, the multispectral emitting device (110) having at least one radiation manipulating device, the multispectral emitting device being configured to have at least one transmitting unit for LiDAR radiation, one receiving unit for LiDAR radiation and at least two radiation manipulators, one of the radiation manipulators for the LiDAR radiation being a LiDAR radiation manipulating device and at least one other of the radiation manipulators being a LiDAR radiation manipulating device. is a radar radiation manipulating device, comprising a radiation manipulator for LiDAR radiation and a transmission unit for LiDAR radiation, wherein the radiation manipulator for LiDAR radiation is configured to redirect LiDAR radiation emitted by the transmission unit for LiDAR radiation, the radiation manipulator for LiDAR radiation is configured such that external LiDAR radiation that has passed through the headlight cover is directed to the receiving unit for LiDAR radiation, and the radiation manipulator for radar radiation is configured such that external radar radiation that has passed through the headlight cover is directed to the receiver unit for radar radiation, and the transmission unit for LiDAR radiation, the radiation manipulator for LiDAR radiation, the radar module, and the radiation manipulator for radar radiation are configured such that 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.

[0013] According to the invention, radar and LiDAR sensors are integrated into the headlight, thereby ensuring optimal transmission for the optical sensors and light sources as well as a lack of dirt. One or more LiDAR sensors (Light Detection And Ranging) operate on a measurement principle based on determining the time between the emission of a laser pulse and the reception of the reflected light, so that they can measure distances very accurately and distinguish different objects well from one another.

[0014] Particularly preferred embodiments of the multispectral emission device are characterized by the fact that at least one radiation cone of redirected LiDAR radiation and at least one radiation cone of redirected radar radiation can run parallel to one another, paraxially and / or coaxially or in overlapping radiation cones.

[0015] At least partially coaxial beam steering is advantageous to avoid parallax errors that would otherwise require complex calculations.

[0016] A particularly useful further development of the multispectral emitting device is characterized by the fact that at least one radiation cone (104) of the redirected LiDAR radiation and at least one radiation cone of the redirected radar radiation can furthermore overlap.

[0017] This embodiment relates to the overlap of LiDAR and radar radiation cones, and in particular to the overlap of LiDAR and radar radiation cones shown. The overlap of LiDAR and radar radiation cones in particular has the following technical advantages:

[0018] On the one hand, this allows for higher sensor sensitivity and more compact installation space. On the other hand, wavelengths that differ by several orders of magnitude are combined to create additional detection possibilities, for example with respect to the movement of objects that reflect signals to the multispectral emitting device. This also ensures all-weather suitability for determining components of the translational or rotational movement of objects, in particular other vehicles or pedestrians. Furthermore, this ensures rapid and accurate determination of not only distances but also speeds and accelerations.

[0019] This combines particularly well the low sensitivity of radar radiation to rain and fog with the particularly high resolution of LiDAR radiation.

[0020] A particularly advantageous further development of the invention provides that the radiation cone of the light of the headlamp also proceeds coaxially with the radiation cone 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 associated with each other for joint detection of the same object. The LiDAR and radar measurements can be recorded independently of each other and used for cross-validation, or, for example, the measurement data from one system can be used to improve the settings and improve the measurements by the other system, or they can be merged for improved measurements by jointly analyzing the raw data from both systems.

[0021] Particularly advantageous embodiments of the present invention allow wavelength combinations spanning four orders of magnitude from 400 nm to 4 mm.

[0022] A multi-spectral emitting device preferably emits electromagnetic radiation in at least three wavelength ranges, and in preferred embodiments, over four decades.

[0023] An advantageous further development of the invention provides that at least one radiation cone of redirected LiDAR radiation, at least one radiation cone of redirected radar radiation and the radiation cone of light of the headlamp can run parallel to one another, paraxially and / or coaxially or overlapping.

[0024] A particularly preferred embodiment of the multispectral emitting device is characterized by the fact that at least one radiation cone (104) of redirected LiDAR radiation, at least one radiation cone of redirected radar radiation and at least one radiation cone of headlight radiation may furthermore run paraxially and / or overlap.

[0025] This is particularly useful for achieving three degrees of concentricity for at least one radiation cone of redirected LiDAR radiation, at least one radiation cone of redirected radar radiation, and at least one radiation cone of headlight light.

[0026] The positions of components disclosed in this application with respect to LiDAR radiation and with respect to radar radiation are interchangeable, this being particularly applicable to the illustrated sensor components and radiation manipulators.

[0027] In particular, the beam manipulator for the LiDAR radiation and the beam manipulator for the radar radiation can be positioned independently of each other in the headlamp, which is compatible with the positioning in the beam path, in particular the radiation manipulator for the LiDAR radiation can be positioned both before and after the radiation manipulator for the radar radiation in the radiation path.

[0028] Preferably, the multispectral emitting device is characterized in that it comprises at least one transmitting unit for LiDAR radiation, one receiving unit for LiDAR radiation, and at least two radiation manipulators, one of the radiation manipulators being a LiDAR radiation manipulating device, and the other of the at least one of the radiation manipulators being a radar radiation manipulating device, and the radiation manipulator for LiDAR radiation and the transmitting unit for LiDAR radiation are configured such that the radiation manipulator for LiDAR radiation is configured to redirect the LiDAR radiation emitted by the transmitting unit for LiDAR radiation, and the LiDAR radiation is configured to receive the LiDAR radiation. The radiation manipulator for redirected LiDAR radiation is configured to direct external LiDAR radiation that has passed through the headlamp cover to the receiving unit for LiDAR radiation, the radiation manipulator for radar radiation is configured to direct external radar radiation that has passed through the headlamp cover to the receiving unit for radar radiation, and the transmitting unit for LiDAR radiation, the radiation manipulator for LiDAR radiation, the radar module, and the radiation manipulator for radar radiation are configured such that at least one radiation cone of redirected LiDAR radiation and at least one radiation cone of redirected radar radiation are parallel and / or coaxial and overlap each other.

[0029] The term radar is derived from the English terms radio detection and ranging.

[0030] LiDAR specifically refers to a device, system (Light Detection and Ranging) or radiation used for this purpose.

[0031] The present application also discloses further developments and embodiments relating to LiDAR radiation, other embodiments which may also be used for radar radiation, unless expressly excluded.

[0032] Likewise, unless expressly excluded, further embodiments and embodiments relating to radar radiation can also be used for LiDAR radiation.

[0033] A particularly preferred embodiment of the multispectral emitting device is characterized in that it comprises at least one transmitting unit for LiDAR radiation, one receiving unit for LiDAR radiation and at least two radiation manipulators, one of the radiation manipulators being a LiDAR radiation manipulating device and the at least one radiation manipulator for radar radiation being a radiation manipulating device, the radiation manipulator for LiDAR radiation and the transmitter unit for LiDAR radiation being configured such that the radiation manipulator for LiDAR radiation redirects the LiDAR radiation emitted by the transmitter unit for LiDAR radiation and such that at least one radiation cone for the redirected LiDAR radiation is parallel and coaxial with the light cone emitted by the light source, the radiation manipulator for radar radiation preferably being a frequency-controlled device. a number-selective radar radiation manipulating device, comprising a radiation manipulator for radar radiation and a radar module, the radiation manipulator for radar radiation being configured to redirect radar radiation emitted by the radar module such that at least one radiation cone of the redirected radar radiation is parallel, coaxial and / or overlapping with a light cone emitted by the light source (102), the radiation manipulator for LiDAR radiation (130) being set up such that external LiDAR radiation that has passed through the headlight cover is directed to a receiver unit for LiDAR radiation (150, 150b), and the second radiation manipulator (140) being set up such that external radar radiation that has passed through the headlight cover is directed to a receiver unit for radar radiation (150, 150b).

[0034] A radiation manipulator is a device that manipulates electromagnetic radiation to: - reflection; - transmission; - Distraction; - Radial shaping; - Radiation focusing; - Radial splitting; - Radiation Merging The term "unit" refers to a unit adapted to effect one or more of the following changes:

[0035] Thus, a multispectral emitting device, in particular for a vehicle, is provided which is set up to emit electromagnetic radiation and configured to detect at least reflected electromagnetic radiation: a headlamp comprising a light-transmitting headlamp cover and a light source arranged behind the headlamp cover, i.e. in front of the headlamp cover in the direction of emission, and which comprises a radar module having at least one radar antenna unit, and a LiDAR module arranged behind the headlamp cover and with at least one LiDAR receiver unit integrated in the headlamp, wherein the multispectral emitting device has two emitting manipulators.

[0036] Preferably, an integrated headlamp with high transmission of illumination wavelengths in the visible wavelength range, a frequency selective beam deflector for LiDAR wavelengths, and a frequency selective beam deflector for radar radiation are also provided, whereby all three wavelength ranges are combined in a coaxial system concept.

[0037] Coaxial or overlapping integration of optical, LiDAR and radar sensors allows the combination of multispectral wavelength ranges spanning several orders of magnitude. The detection possibilities realized by the present invention will contribute significantly to increasing the degree of vehicle automation towards autonomous driving.

[0038] The invention has several advantages which can be realised both individually and in combination with one another. These are in particular: Detection of long and short distance objects both in front of and adjacent to the vehicle using LiDAR and radar; Increased sensor density in the vehicle: Compact installation space through coaxial and / or overlapping integration of LiDAR, radar and lighting technologies within the headlamp housing; Improved reliability and robustness through simplified data fusion of complementary sensor data from LiDAR and radar with the same detection direction; - Flexibility in the use of headlamp installation space through the freedom to develop reflective / transparent structures for directing radar radiation; It is.

[0039] According to the invention, the multispectral emission device disclosed in the present application is characterized in that LiDAR radiation in the form of a primary LiDAR signal is emitted as focused electromagnetic radiation in a LiDAR radiation cone, and radar radiation in the form of a primary radar signal is emitted as focused electromagnetic radiation in a radar radiation cone, the LiDAR radiation cones and the radar radiation cones being parallel, coaxial and overlapping, and the secondary LiDAR signal reflected by at least one object and the radar signal reflected by the object are detected independently of each other and, if necessary, analyzed in combination with each other to obtain the following information: - Angle or direction to the object, - distance to the target (from the time difference between sending and receiving), - relative motion between the multispectral emitting device (110) and the object; One, some, or all of the above may be operated on as obtained from the analysis, with the parallelism, coaxiality, and overlap of the LiDAR radiation cone and the radar radiation cone being taken into account in the evaluation.

[0040] It is particularly advantageous that the radar, LiDAR and headlight lights are independent, especially with respect to their direction, which allows independent scanning of different sensor and illumination wavelengths.

[0041] It is particularly advantageous for at least one further LiDAR radiation cone and / or one further radar radiation cone to be emitted so that objects can be detected with angular resolution.

[0042] According to the invention there is further provided a vehicle, characterized in that it comprises at least one multispectral emitting device as disclosed in the present application and a unit for fusion of radar and LiDAR sensor measurement data.

[0043] Preferably, at least one micro-optical system is used, in particular in the beam path of the light of the headlamp, which is used to achieve the desired intensity distribution of the light of the headlamp.

[0044] This makes it possible to adapt the light of the headlamp to the operating requirements, in particular those of the vehicle in which the headlamp is installed.

[0045] An example of a lighting scenario that can be reliably achieved with this technique is low and high beam.

[0046] A tilted beam has a sharp asymmetric cut-off line at the top of the beam and a more or less abrupt fall-off at the bottom and sides of the beam.

[0047] The high beam is a symmetrical light beam, but with the option to dynamically adjust the light beam (turning individual segments on and off).

[0048] While this can be achieved with conventional spotlights, the use of micro-optics offers the added benefits of a higher transmission rate (i.e., efficiency) and much greater compactness.

[0049] Preferably, the use of the micro-optical system is similar to that described in the applicant's German patent applications DE 10 2018 217 215 A1 and DE 10 2018 217 213 A1.

[0050] Based on collimated LED light sources, micro-optics are used for ECE-compliant shaping of the angular distribution of the intensity of low and high beam. In addition, the function of a segmented high beam is realized to avoid blinding oncoming drivers. Compared to conventional optical realizations for automobile headlights, for example with freeform mirrors and aspherical lenses, micro-optical beam deflection allows high transmission rates, short construction lengths as well as flexible design of the contours of the light modules for low and high beam.

[0051] In particular, the present invention provides an integrated approach in which electromagnetic radiation from headlamp light, LiDAR, and radar sensors are coaxially combined within the headlamp via shared transmitting and reflecting elements.

[0052] Depending on the sensor system and wavelength spectrum used, it is preferable to use special thin films, some of which are selectively structured. In this way, a multispectral wavelength range from visible light to millimeter waves (preferably from 400 nm to 4 mm) can be coaxially integrated over several orders of magnitude. The actual sensor and, if necessary, other components of the LiDAR module or radar module can then be mounted outside the field of view of the headlamp. This makes a compact multispectral sensor / headlamp system that can be easily calibrated. The LiDAR transmitter and the LiDAR receiver can already be aligned with each other before mounting, but post-mounting alignment is particularly advantageous, since it improves the alignment, especially with at least one of the beam modifiers.

[0053] The headlamp system is preferably designed to perform area-selective illumination and angle-resolved target detection at near and far ranges using radar, LiDAR and array light emitters. The wavelength-selective structure allows to influence the sensor's specific spectral range, thus reducing the thermal effects caused by unwanted absorption. By further insulation of the individual components, especially by spatial and thermal decoupling, phase shifts, increased noise levels and also inaccuracies in sensor-lighting localization can be largely avoided in an integrated approach. A highly selective sensor situation is realized by using individually addressable VCSEL arrays and photodetector pixels.

[0054] The LiDAR transmitter unit is preferably an array light emitter, or it can be a single edge emitter laser, with a VCSEL array being particularly advantageous.

[0055] Thermal insulation of the LiDAR transmitter unit has the advantage that the temperature-dependent wavelength drift of the LiDAR transmitter unit can be avoided by the thermal insulation. This is particularly advantageous because the LiDAR receiver has a defined bandpass filter that can only receive a narrow wavelength range. If the laser drifts out of this range due to temperature, the secondary LiDAR radiation will not be received. VCSEL arrays have the further advantage of being less sensitive to temperature than conventional lasers.

[0056] The configuration of the visible light emitting element, the radar module, and the LiDAR module allows the radiation manipulator to be utilized to thermally isolate the heat dissipating components from each other, which improves the thermal insulation of the LiDAR module, and in particular the LiDAR transmitter unit.

[0057] In contrast to previously tried and tested technologies, the configuration according to the invention makes it possible to exploit advantages such as protection and integrated design within the headlamp for radar and LiDAR technology in a particularly flexible manner and with a high degree of variability, without having to accept significant limitations in terms of the lighting function.

[0058] In particular, the headlamp cover can be made of a transparent material, such as glass or transparent plastic. The headlamp cover or its material is (itself) transparent to light and radar radiation (HF waves). It is particularly advantageous to use a headlamp cover which attenuates, refractions and scatters as little as possible the electromagnetic radiation used, preferably radar radiation, LiDAR radiation and the light of the headlamp.

[0059] Radar should be understood as one of the already available or established technologies for emitting and detecting electromagnetic waves, possibly of different wavelength ranges, i.e. radar in the general sense of "Radio Detection And Ranging" or "Radio Direction And Ranging". This radar technology can include waves of different frequency ranges.

[0060] Radar radiation is emitted as bundled electromagnetic radiation in the form of a primary signal and received as a secondary signal in the form of reflected echoes from objects and analyzed taking into account at least one criterion. From the electromagnetic waves received and reflected by an object, one, some, or all of the following information can be obtained: - Angle or direction to the object - Distance to the target (based on the time difference between sending and receiving) - the relative motion between the transmitter and the target - this can be calculated from the shift in frequency of the reflected signal using the Doppler effect - A series of individual measurements provides the distance and absolute velocity of an object.

[0061] LiDAR is one of the already available or established technologies for emitting and detecting electromagnetic waves, especially near infrared, preferably in the wavelength range 800nm-3000nm. In particular, it is modulated, preferably pulsed laser radiation in one or more wavelength ranges.

[0062] Also, LiDAR radiation is emitted as bundled electromagnetic radiation in the form of a primary signal and received as a secondary signal in the form of reflected echoes from an object and analyzed taking into account at least one criterion.

[0063] From the electromagnetic waves received and reflected by an object, one, some, or all of the following information can be obtained: - Angle or direction to the object - Distance to the target (based on the time difference between sending and receiving) - the relative motion between the transmitter and the target - this can be calculated from the shift in frequency of the reflected signal using the Doppler effect - A series of individual measurements provides the range and absolute velocity of an object.

[0064] Preferably, the evaluation of radar emissions and the evaluation of LiDAR emissions provide complementary and / or overlapping information.

[0065] The invention provides in particular a multispectral emission unit which emits at least partially coaxial electromagnetic radiation in at least three different wavelength ranges, possibly spanning wavelength ranges over four orders of magnitude.

[0066] The multispectral radiating unit according to the invention comprises: - visible light radiation, especially 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 the wavelength range 860-940 nm, possibly in one or more further wavelength ranges or one or more further wavelengths, for example 1550 nm, - radar radiation, in particular in the wavelength range between 1 mm and 100 mm, in particular between 3.7 mm and 4 mm; The electromagnetic radiation emitted in at least three wavelength ranges, and in preferred embodiments spanning four decades.

[0067] An advantageous embodiment of the multispectral emitting device is characterized in that the radiation manipulator for the LiDAR radiation is designed such that the LiDAR radiation emitted by the transmitting unit for the LiDAR radiation is redirected and at least one further radiation cone for the redirected LiDAR radiation is formed, and in that at least one receiving unit for the LiDAR radiation is provided, the further receiving unit for the LiDAR radiation being configured such that the further LiDAR radiation from the outside that has passed through the headlight cover is guided to the receiving unit for the further LiDAR radiation.

[0068] An advantageous embodiment of the multispectral emitting device provides that a radiation manipulator for the radar radiation is designed such that the radar radiation emitted by the radar module is redirected and at least one further radiation cone for the redirected radar radiation is formed, and that at least one receiving unit for the radar radiation is provided, the receiving unit for the radar radiation and / or the further receiving unit being configured such that the further radar radiation from the outside which has passed through the headlight cover is received in a surface area other than the surface area towards which the “other” secondary radar radiation is directed.

[0069] The radar waves are deflected at an arbitrary but defined angle, preferably 90°, using reflecting and / or transmitting arrays. This deflects the electromagnetic waves without additional focusing. This allows the use of any automotive radar with headlamps in front of the deflection system, which is an important advantage.

[0070] Preferably, structures consisting of phase-controlling, polarization-selective dielectric layers and / or conductive, optically transparent layers are created by customized thin film deposition coupled with position-selective laser ablation. The radar beam can be deflected independently of the shape of the reflecting / transmitting array (e.g., planar, curved, or any geometric shape), providing flexibility in the realization of the entire system, especially with regard to the beam paths of the LiDAR and the optical emitter.

[0071] One possible embodiment is to use several such reflective, transmissive, or simultaneously reflective and transmissive structures to realize any beam path, in order to create further degrees of freedom in the realization of the overall system.

[0072] An additional embodiment is to use one or more such reflective, transparent, or simultaneously reflective and transparent structures to realize several beam paths for using several radar and / or LiDAR sensors. This also includes the coverage of different detection areas by different sensors. A further design based on this is to use additional frequency selective surfaces to be able to split / distinguish the beam paths according to frequency.

[0073] A further advantageous embodiment is the combination of electrical elements with mechanically adjustable alignment, in particular by rotation, in order that the light beam and the millimeter wave can be adjusted / modified simultaneously and / or independently of each other, in particular according to the preferred embodiments given below.

[0074] An advantageous further development of the multispectral emitting device is characterized by the fact that at least one of the radiation manipulators (130, 140) is mounted rotatably along at least one axis.

[0075] A preferred embodiment of the invention allows for fast and reliable adjustment of one or more FOVs, which refers to the field of view of the respective sensor receiver, in particular a radar or LiDAR module, which is changed by at least one of the radial manipulators.

[0076] Rotational mounting of at least one of the beam manipulators about the z-axis is particularly advantageous when initially setting up the spotlight, as it makes assembly easier.

[0077] The rotational mounting and active pivoting about the y-axis of at least one of the beam manipulators (130, 140) is particularly advantageous during operation of the spotlight, since it allows the horizontal FOV to be set quickly and reliably.

[0078] An advantageous embodiment of the multispectral emitting device provides that at least one of the radiation manipulators is mounted rotatably about the y-axis, allowing the horizontal FOV to be quickly and reliably set during operation of the multispectral emitting device.

[0079] An advantageous further development of the multispectral emitting device is characterized in that, during operation of the multispectral emitting device (110), at least one of the radiation manipulators (130, 140) is mounted rotatably about the x-axis, allowing for a fast and reliable setting of the vertical FOV.

[0080] As shown in the present application, by rotationally mounting and actively pivoting at least one of the emission manipulators around the y-axis, the FOV of the LiDAR emission and / or radar emission can be pivoted to the left or right, in particular following the curvature of the path while a vehicle equipped with at least one multispectral emission device according to the present invention is traveling.

[0081] Furthermore, the car manufacturer can adjust the headlight sensor accordingly, in particular depending on the FOV of other sensors on the vehicle, for example more in the direction of travel or outwards.

[0082] The rotational mounting and active pivoting of at least one of the emission manipulators around the x-axis is particularly advantageous during operation of the headlamp, since it allows the vertical FOV to be set quickly and reliably, so that the FOV of the LiDAR emission and / or radar emission can be pivoted up or down following the course of the route, in particular in the case of valleys / mountains, while a vehicle equipped with at least one multispectral emission device according to the invention is traveling.

[0083] An advantageous embodiment of the multispectral emitting device provides that during operation of the multispectral emitting device, at least two of the radiation manipulators are capable of rotating independently of each other around at least one of the axes, and by rotating the two radiation manipulators individually, the FOV of the LiDAR radiation and the radar radiation can be set independently of each other.

[0084] Therefore, in particular, by rotating at least two radiation manipulators separately, it becomes possible to change the FOV of the radar radiation and the LiDAR radiation independently of one another, and thus the FOV of the LiDAR radiation and the radar radiation can be quickly, independently and reliably changed independently of one another, in particular by rotating them independently of one another.

[0085] It is particularly advantageous to design the multispectral emitting device so that it can be connected to a control unit, which is set up to control the radiation manipulators during operation of the multispectral emitting device such that the radiation manipulators can each rotate independently of each other around at least one of the axes, such that the FOV of the LiDAR radiation and the radar radiation can be set independently of each other by individual rotation of the at least two radiation manipulators, and such that the individual rotation of the radiation manipulators can be used to increase the accuracy of detection of targets.

[0086] This useful embodiment of the multispectral emitting device enables an advantageous method of operating the multispectral emitting device, characterized in that the multispectral emitting device is connected to a control unit, which controls the radiation manipulators during operation of the multispectral emitting device (110) such that the radiation manipulators are rotated independently of each other around at least one of the axes, such that individual rotations of the FOV of the at least two radiation manipulators of the LiDAR radiation, the FOV of the radiation manipulator of the LiDAR radiation, and the FOV of the radiation manipulator of the LiDAR radiation are controlled by the control unit, such that the radiation manipulators are each rotated independently of each other around at least one of the axes, such that the FOV of the LiDAR radiation and the FOV of the radar radiation can be set independently of each other by the individually generated rotation of the at least two radiation manipulators, and such that the individually generated rotation of the radiation manipulators is used in real time to increase the accuracy of detection of targets.

[0087] Further preferably, a vehicle comprising at least one, preferably at least two of the multispectral emitting devices exemplified in the present application is configured to comprise a control unit, which is configured to control the radiation manipulators during operation of the multispectral emitting device (100) such that the radiation manipulators can be rotated independently of each other around at least one of the axes, such that the FOV of the LiDAR radiation can be determined by rotating the at least two radiation manipulators independently of each other around at least one of the axes, such that the FOV of the LiDAR radiation and the radar radiation can be set independently of each other by individual rotation of the at least two radiation manipulators, and such that the individual rotation of the radiation manipulators can be used to increase the accuracy of detection of targets.

[0088] Advantageous embodiments of the configuration of the radar module are described below.

[0089] According to advantageous example embodiments, the radar module and the LiDAR module are arranged outside (in particular below or behind) the 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. According to example embodiments, the radar module and / or the LiDAR module are arranged below a tangential or horizontal plane that defines the light reflector below. According to example embodiments, the radar module and / or the LiDAR module are arranged outside (in particular laterally, above or below) the 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 the relative arrangement with respect to each other. Optionally, the radar module can be arranged behind the light source, in particular such that the alignment of the optical axis of the radar module is essentially parallel (or aligned) with the central longitudinal axis of the light cone of the light source. A radiation manipulator can be arranged between the radar module and the light source.

[0090] The radar emitter and receiver, as well as the LiDA re-emitter and receiver, are arranged outside the beam path, rather than within it. By reflecting the radar radiation with a radiation manipulator and deflecting the radar radiation in the range of 60 to 120°, in particular by 90°, the radar radiation can be corrected in a direction ahead of the vehicle, while at the same time ensuring radiation deflection, if the individual components are arranged in an advantageous relative position.

[0091] In particular, the radar module or the radar emitter and receiver can be aligned vertically upwards. A coated transparent radiation manipulator (in particular a so-called Fresnel reflector array) can be configured in front of it. The antenna used in the radar module is preferably a planar antenna (e.g. a patch). The antenna can preferably be integrated in the radar module via a transmission line (e.g. a microstrip line) without additional adapters. The antenna can consist of several individual antennas or an array antenna, in particular in a two-dimensional configuration.

[0092] Both beam manipulators are transparent to visible light from the headlamp light source and primarily reflect radar and / or LiDAR radiation and direct it forward through the headlamp cover. In the process, the beam manipulator may change the radar beam into a desired lobe or surface shape.

[0093] The cover can be coated to provide a frequency selective passband structure, allowing only radar radiation in a particular band range to pass.

[0094] According to one embodiment, the radar and LiDAR modules are arranged in an area outside the light cone of the headlamp light, which also provides an advantageous decoupling from the lighting function.

[0095] According to an exemplary embodiment, the radar module and / or the LiDAR module is arranged on the base of the headlamp housing, in particular mechanically coupled to the base, which favours decoupling from the lighting function.

[0096] According to one embodiment, the radar module and / or the LiDAR module are below the horizontal axis of the electromagnetic radiation direction, in particular the LiDAR module is tilted by 90° and folded over an additional LiDAR correction element, which has advantages for the calibration of the system and makes the whole system more compact.

[0097] According to an example embodiment, at least one of the radiation manipulators is configured in the direction of radiation of the radar radiation.

[0098] According to an example embodiment, at least one of the radiation manipulators is configured in the direction of reflection of the radar radiation.

[0099] According to an example embodiment, at least one of the radiation manipulators is arranged in the radiation direction of the LiDAR radiation.

[0100] According to an example embodiment, at least one of the radiation manipulators is configured in the direction of reflection of the LiDAR radiation.

[0101] According to example embodiments, at least one of the radial manipulators is flat, in particular planar or curved.

[0102] According to example embodiments, 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 to manipulate the radar radiation has a conductive and / or dielectric structure with dimensions that match the wavelength (frequency) of the emitted radar radiation.

[0103] According to an example embodiment, at least one of the radiation manipulators is arranged in the direction of radiation of the light source.

[0104] According to example embodiments, at least two radar radiation manipulating areas, each with an individual radar radiation manipulating function, are provided on at least one of the radar radiation manipulating devices, which makes it possible to influence a first portion of the radar radiation individually and also to influence a second portion of the radar radiation individually in a different manner than the first portion, in particular with a view to optimizing detection at close and far ranges and / or at forward and side ranges.

[0105] According to one example embodiment, at least two of the radar beam manipulating areas are configured / formed within the same radar beam manipulating device, which also allows for extensive functionality integration.

[0106] In particular, the different radar radiating manipulated areas may comprise at least one conductive area and at least one non-conductive area.

[0107] In particular, the radar radiation forms a radiation front, which by means of the arrangement according to the invention can be reflected, in particular at conductive areas, to predefine an interference pattern.

[0108] Advantageous embodiments relating to the alignment of the radar and / or LiDAR module or the configuration of the radar and / or LiDAR module relative to other components are described below.

[0109] According to example embodiments, the optical axis of the radar module and / or LiDAR module or radar antenna unit is aligned at least approximately vertically upward (vertical) in the intended configuration of the headlamp.

[0110] According to example embodiments, the optical axis of the radar module and / or LiDAR module or radar antenna unit is directed in the radiation direction to a radiation manipulator arranged behind the headlamp cover integrated in the headlamp and behind the light source, so that the optical axis of the radar module and / or LiDAR module is aligned with the radiation manipulator, such that the radar module and / or LiDAR module is arranged at the bottom of the headlamp, which also makes it possible to locally decouple the radar module and / or LiDAR module from the light propagation path.

[0111] The relative positioning of the radar module and / or LiDAR module remains relatively flexible, since the antenna module and the radar module are designed as separate components in some embodiments and as integrated components in other embodiments, and are particularly hermetically sealed from the outside of the headlamp. The relative positioning described herein has proven to be particularly advantageous.

[0112] Advantageous embodiments of the radar antenna unit are described below.

[0113] According to example embodiments, the radar antenna unit has multiple individual antennas or antenna arrays in a two-dimensional configuration, which allows high variability when adjusting the radiation characteristics. In one embodiment, the radar antenna unit is integrated into the radar module using a microstrip cable without additional adapters, which also makes the integration easier.

[0114] In particular, the radar module can include all RF front-end and electronic components and circuits that can be fabricated on a planar dielectric substrate. All of the antennas are advantageously located at the base of the headlamp housing near the headlamp cover, in particular in an at least partially overlapping configuration with the headlamp cover.

[0115] The radiation-effective cover is especially configured at the intermediate plane between the radiation manipulator for LiDAR radiation or especially for radar radiation and the radar module, especially in a direction / plane at least approximately perpendicular to the optical axis of the radar module, in order to optically shield the radar module. This cover is advantageously made of a flat and thin plastic (especially polycarbonate), whereby the plastic can have a dark coating on one side. The cover is preferably configured and set up to act as a heat shield for the electronic components. This configuration of the cover also provides a slim design.

[0116] Advantageous embodiments of a radiation manipulator for LiDAR radiation or in particular for radar radiation in accordance with the invention are described below.

[0117] According to an example embodiment, the multispectral emission device is arranged behind the headlamp cover and has a radiation manipulator for LiDAR radiation, or in particular for radar radiation, integrated in the headlamp, whereby 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.

[0118] In the configuration according to the invention, the radiation manipulator for LiDAR radiation or in particular for radar radiation and optionally also the high frequency lens as a component of the radar radiation manipulating device can adapt the radar radiation according to the respective situation in a particularly flexible manner (i.e. with high variability), in particular largely decoupled from the lighting function. If the radar system is integrated into a headlamp of a motor vehicle, its radar signal can be customized to the desired detection range, in particular by at least one structured (having radiation deflection structures, in particular a pattern in the sense of functional miniature structures) conductive layer / surface in the radar radiation manipulating device. In addition to that, the motor vehicle headlamp can also assume a protective function for the radar technology, in particular thanks to the headlamp cover.

[0119] According to example embodiments, the beam path of the radar or LiDAR radiation is deflected by the radiation manipulator for the LiDAR radiation, or in particular for the radar or LiDAR radiation, in the range of 60 to 120°, in particular in the range of 90°, in particular at least approximately aligned with the direction of radiation of the multispectral emitting device, which also provides advantages regarding the relative configuration of the components with respect to each other.

[0120] According to an example embodiment, the radiation manipulator for LiDAR radiation, or in particular for radar radiation, has a two-dimensional extension, which also allows maximizing the simplicity and robustness of the design.

[0121] According to example embodiments, the radiation manipulator, in particular its inner side, is configured, at least in sections, with an inclination in the range of 35° to 60°, in particular 40° to 50°, relative to the direction of radiation z or relative to the horizontal. According to one example embodiment, the radiation manipulator is configured 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 two oppositely inclined surfaces, in particular the shape of a saddle roof with an included angle in the range of 45° to 90°. This provides an advantageous relative configuration in each case and facilitates the integration of the functions.

[0122] According to one embodiment, the configuration and / or alignment of the radiation manipulator can be adjusted by motors, which also allows for great variability and an extended range of functionality.

[0123] According to one embodiment example, the radiation manipulator has a three-dimensional extension at least in section and is set up to reflect radar or LiDAR radiation laterally as well, which also extends the functionality. In particular, advanced / extensive functionality can be ensured with simple means even in a small installation space.

[0124] According to an example embodiment, the radiation manipulator for radar radiation is formed from a plurality of two-dimensional elements and thus has a two-dimensional extension per element, or two-dimensional or three-dimensional extension for all elements, which also provides a high degree of variability.

[0125] According to one embodiment example, the radar radiation manipulator is designed as a Fresnel reflector, whereby both sides of the radar radiation manipulator have frequency-selective radiation deflection structures, which makes it possible to influence the radiation characteristics in a very targeted way.

[0126] According to an example embodiment, the radiation manipulator for radar radiation is made of a light- and radar radiation-transparent substrate material and has a radiation manipulator, in particular in the form of a coating or as a conductive surface with a particularly frequency-selective radiation deflection structure. This can also ensure a particularly simple and robust design. The at least one conductive layer or surface transparent to light, regardless of its composition, can be formed in particular from a light-transmitting conductive oxide or a sufficiently thin metal layer, preferably silver.

[0127] According to one embodiment, the beam manipulator has a beam manipulating device and is configured with respect to the headlamp cover such that the radar radiation from the radar module or the LiDAR radiation from the LiDAR module to the outside of the headlamp cover passes / radiates at least twice through the respective frequency-selective beam deflection structure. This also provides a high degree of variability. In other words, the radar radiation can be guided through a first filter (first radiation deflection structure) provided by the radiation manipulator for the radar radiation, and after deflection, can also be guided through a second filter (second or further radiation deflection structure) provided by the headlight cover. Similarly, the LiDAR radiation can be guided through a first filter (first radiation deflection structure) provided by the radiation manipulator, and after deflection, can also be guided through a second filter (second or further radiation deflection structure) provided by the headlamp cover.

[0128] According to one example embodiment, the radiation manipulator for radar radiation is formed from individual reflector elements, each of which is rectangular or triangular, in particular having the same side length. This offers in particular a kind of modular structure for high variability with a simple basic structure for each individual reflector element.

[0129] According to an example embodiment, the radiation manipulator for radar radiation has on at least one of its surfaces a light-transmitting conductive coating, in particular with one or more oxide layers or conductive surfaces. This provides a good reflectivity for the wavelength of the radar radiation used. The radiation manipulator is at least partially provided by the oxide layers. This type of integration of radiation deflection structures not only offers a relatively high variability (keyword: affecting the way the radiation propagates), but also offers advantages in terms of space requirements.

[0130] According to one embodiment, the radiation manipulator for radar radiation is translucent (transparent to LiDAR radiation or visible radiation), which also offers good variability in terms of configuration relative to the light source.

[0131] According to one embodiment, the LiDAR radiation modifier is transparent to radar radiation.

[0132] According to one embodiment, a radiation manipulator for the radar radiation is set up to shape the radar radiation, especially in the form of a beam or an area, which opens up many application possibilities.

[0133] Radiation manipulators for radar radiation can be constructed from substrate materials that are transparent not only to light but also to RF waves. In particular, the reflectivity can be adjusted or predetermined by coating one or both sides of the substrate with a very thin transparent conductive oxide.

[0134] The beam manipulator is preferably arranged near the headlight housing, well in front of the light source, preferably between the headlamp cover and the beam shaping optics.

[0135] The radar emitter's radiation manipulator is tilted or aligned so that the emitted HF waves can be directed precisely at the intended target and the received waves can be focused onto the receiving antenna.

[0136] Advantageous embodiments of at least one of the radar beam manipulating devices, preferably with a frequency selective beam deflection structure, are described below.

[0137] According to an example embodiment, the or each radar radiation manipulating device with a frequency-selective radiation deflection structure has, at least in sections, a periodic arrangement of the structural pattern, in particular a concentric arrangement, which also allows the arrangement according to the invention to be designed and optimized in a particularly flexible manner for the individual application.

[0138] According to an embodiment example, the radiation manipulator, preferably with a frequency-selective radar-reflective structure, is designed as a coating or as a membrane or as a conductive surface. This can further simplify the design. In particular, the coating can also be provided as a reinforcement to an integrated pattern or structure.

[0139] According to one example embodiment, polymers, especially polycarbonate, form an advantageous substrate for radiation manipulators or for frequency-selective radar-reflective structures, providing a particularly robust structure, especially in the form of a base module, which can be used and further customized for various applications.

[0140] According to one embodiment, the radiation manipulator comprises a conductive part in the form of a light-transmitting conductive oxide layer, which also allows optimizing the reflection properties.

[0141] The beam manipulators may have different designs that are not limited to simple shapes (e.g., complementary loops, crosses, strips) but may also include, for example, more complex serpentine-based slots (especially for bandpass), in order to reduce the size of the unit cell and achieve better angular stability.

[0142] Advantageous embodiments of a radiation manipulator and a carrier substrate for a radar radiation manipulating device are described below.

[0143] According to one example embodiment, the radiation manipulator is made of an optically and radar-transparent material, in particular the substrate material for the preferably frequency-selective radar-reflective structure in the form of an integrated coating, which allows the integration of even more extensive functions in a particularly robust design.

[0144] According to one embodiment, the radiation manipulator has a thickness that corresponds to an integer multiple of half the wavelength of the emitted radar radiation, which also allows for an optimization of the transmission characteristics.

[0145] According to one embodiment, preferably frequency selective radar reflective structures are provided on both sides (inner and outer) of the radiation manipulator, thus providing a specifically targeted influence on the radiation characteristics.

[0146] According to an example embodiment, the multispectral emission device is designed without a projection lens in that the radar beam path goes from the radar module through the radiation manipulator for radar radiation and the headlight cover, the LiDAR beam path goes from the LiDAR module through the radiation manipulator for radar radiation and the headlamp cover, and the light propagation path from the light source and the light reflector goes directly through the headlamp cover, i.e. in both cases no further intermediate optical or radiation effective components are required. In other words: the entire arrangement is free of a projection lens, i.e. lensless. This also lends itself to a simple, compact and robust design.

[0147] Below is an example of a function description.

[0148] The configuration according to the invention allows selective scanning of the surroundings via the transmitting and receiving arrays, where not only the frontal (frontal) area but also optionally the lateral areas (lateral) can be covered. This also reduces the number of sensor systems required in the headlamp. Significantly improved resolution can also be achieved. In particular, the laser-based thin-film structure allows the desired beam deflection to be realized in a flexible manner, so that the adaptation of the radar characteristics to the respective headlamp type and the desired scanning range at close and long distances can be optimized.

[0149] It has been shown that transparent plastic substrates can be coated with a transparent but conductive layer and then locally removed, with the particular advantage of being able to do so using a laser process for thin film removal without damaging the substrate, without optical defects, and with little to no residue, while also creating structures that can be customized for specific applications.

[0150] The radar reflective structures can optionally be applied by lithography and / or masked coating and printing.

[0151] The aforementioned problem is also solved by a multispectral emitting device, in particular for vehicles, having a headlamp with a light-transmissive headlamp cover, a light source arranged behind the headlamp cover and a light reflector, the headlamp being set up for emitting light, LiDAR radiation and radar radiation and for detecting at least reflected radar radiation and reflected LiDAR radiation, and a radar module arranged behind the headlamp cover and with a radar antenna unit and / or a LiDAR module integrated in the headlamp, the radar module and / or the LiDAR module being arranged in a radiation direction z between the headlamp cover and the light source, the radar module and / or the LiDAR module being arranged below an optical axis or an axis corresponding to a main orientation of the light reflector or the light source, the radar module and / or the LiDAR module being arranged below, above or to the side of the headlamp cover in an overlapping configuration with the headlamp cover, in an area below, above or to the side of the headlamp cover, in an overlapping configuration with the headlamp cover, in an area above or to the side of the headlamp cover, in an overlapping configuration with the headlamp cover, in an area below, above or to the side of the headlamp cover, in an overlapping configuration with the headlamp cover, in an area above, above or to the side of the headlamp cover, in an overlapping configuration with the headlamp cover, in an area below ... the optical axis of the radar module and / or of the LiDAR module or of the radar antenna unit is aligned at least approximately vertically upwards in the intended configuration of the headlamp, the multispectral emitting device is configured behind the headlamp cover and has a radiation manipulator integrated into the head wrap, the radar module and / or the LiDAR module is configured below, above or to the side of the radiation manipulator, the radiation manipulator for the LiDAR radiation, or in particular for the radar radiation, is configured along an optical axis or an axis corresponding to the main orientation of the light source, the beam path of the radar radiation is deflected by the radiation manipulator for the radar radiation in the range of 60 to 120°, in particular in the range of 90°, in particular at least approximately aligned in the radiation direction z of the multispectral emitting device, in particular in the range of 90°, and the radiation manipulator for the radar radiation, in particular its inner side, is configured at least in a section with an inclination in the range of 35 to 60°, in particular in the range of 40 to 50° with respect to the radiation direction z or with respect to the horizontal direction. This results in many of the advantages previously mentioned.

[0152] The aforementioned problem is also solved by using a multispectral emitting device, in particular for emitting light, LiDAR and preferably for frequency-selective emission of radar radiation and at least one, in particular at least two radiation manipulating devices, in particular for designating the radar detection range by means of frequency-selective reflecting structures, as described above, in or on at least one side of a light-transmitting headlamp cover of the multispectral emitting device, which is also transparent to radar radiation, in particular in at least two positions including positions outside or inside the light cone of the light source. In a beam path starting from a radar module and / or LiDAR module that are consecutive to one another (for example in a radiation manipulator arranged above the radar module and / or LiDAR module), in particular in a vehicle headlight, in particular in an automobile headlight, the radar module and / or LiDAR module of the multispectral emitting device is located outside the light cone emitted by the light source below at least one, in particular at least two beam manipulating devices, and the optical axis of the radar module is directed upwards, in particular at least approximately perpendicular to the optical axis of the light source of the headlamp. This results in the aforementioned advantages. The vehicle may be an automobile (road car) or an aircraft or a ship.

[0153] The aforementioned problem is solved by a multispectral emitting device for a vehicle, comprising a headlamp with a light-transmissive and radar-transmissive headlamp cover, a light source and a light reflector arranged behind said headlamp cover, and a radar module with a radar antenna arranged behind the headlamp and integrated in the headlamp, in particular also by a multispectral emitting device as described above, which is created by forming at least one radar radiation manipulating device in the form of a frequency-selective radar-reflecting structure at least on or in the headlamp cover (optionally used / functioning as a substrate), the radiation manipulator having or being at least partially formed by a light-transmissive conductive oxide layer, a conductive part in the form of a conductive oxide layer, the structure pattern being introduced into the radiation manipulator by thin film ablation, in particular by a laser, for example an ultrashort pulsed laser with a pulse duration in the femtosecond to picosecond range or in the nanosecond range. In the nanosecond range, - wavelengths that are adapted for absorption by the coating, in particular but not limited to in the ultraviolet or visible wavelength range;

[0154] This results in the advantages mentioned above. It has been shown that the laser induced structures make it possible to control or adjust and specify the direction and beam characteristics of the radar radiation in a particularly precise manner.

[0155] The aforementioned problem is also solved by a method for emitting light, LiDAR and radar radiation, in particular in a vehicle, and detecting at least reflected radar radiation in each case by a multispectral emitting device, in particular by the above-mentioned multispectral emitting device, in which light is emitted from a light source of a headlamp through a headlamp cover which is transparent for light and transparent for radar radiation according to the direction of the optical axis of the light source, and the radar radiation and / or LiDAR radiation is emitted from a radar module arranged behind the headlamp cover which is integrated in the headlamp and / or LiDAR module; the radar radiation and / or LiDAR radiation are emitted by: The radar and / or LiDAR module emits radar radiation in a direction transverse to the optical axis of the light source, in particular at least approximately perpendicular, via at least one radar radiation manipulating device, in particular in the form of a frequency-selective radar reflecting structure, which is also provided on or in at least the headlamp cover and is deflected in the emission direction of at least one of the multispectral emitting devices, in particular at least approximately parallel to the optical axis of the light source, in particular in the direction of travel of the vehicle in which the headlamp is aligned, whereby the radiation characteristics of the radar radiation are predetermined by the at least one radar radiation manipulating device, resulting in the aforementioned advantages.

[0156] According to one embodiment, the method also includes detection of reflected radar radiation, whereby the reflected radar radiation is detected in particular on the opposite beam path, which also extends the range of functionality.

[0157] According to one embodiment, the structural pattern is introduced into the radiation manipulator by thin film ablation or thin film deposition, for example by laser ablation, by a membrane, by a printing, coating or deposition process (sputtering, thermal evaporation and / or electron beam evaporation) and / or by lithography.

[0158] According to one embodiment, the radiation manipulators are created by thin film ablation or deposition, or by applying a membrane.

[0159] Further advantageous aspects and preferred embodiments of the present invention can be found in the following figures of preferred embodiments of the present invention: The present invention is explained in more detail in the following figures, in which reference signs not explicitly mentioned in the respective figures refer to other figures. [Brief description of the drawings]

[0160] [Figure 1] 1 is a schematic perspective view of a multispectral emitting device in accordance with an advantageous embodiment; [Diagram 2] 1 is a schematic side view of a multispectral emitting device in accordance with an advantageous design example; [Diagram 3] A diagram of the multispectral emitting device shown in Figure 1 showing the beam path, the bearing points LiDAR reflector and manipulator, and the highlighted bearing points and manipulator of the radar reflector. [Figure 4] FIG. 1 illustrates the aggregation and fusion of radar (contours) and LiDAR measurement data to increase the reliability and robustness of sensor data in an ADA system using a multispectral emitting device according to the present invention. [Diagram 5] FIG. 1 illustrates the operating principle of a LiDAR system for distance measurement with a transmitter (light source with transmit optics, e.g. a VCSEL array) and a receiver (sensor with receive optics) as part of a multispectral emission device according to the present invention, and associated electronic components. [Figure 6] FIG. 1 illustrates the reduction of spectral reflection using an appropriate single-sided coating. [Figure 7] FIG. 1 is a schematic diagram of a phase shifting structure suitable for phase control of an incident wave. [Figure 8] FIG. 13 shows the dependence of phase on patch size in mm. [Figure 9] FIG. 2 shows a reflective array according to the present invention. [Figure 10] FIG. 11 is a schematic diagram illustrating the deflection of electromagnetic waves by the array shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0161] FIG. 1 shows a radar set up to emit electromagnetic radiation and detect at least reflected radar radiation: A headlight (101) having a light-transmitting headlight cover (4) and a light source (102) arranged behind the headlight cover; A radar module (111) arranged behind the headlamp cover and equipped with a radar antenna unit (112) integrated in the headlamp. 1 shows a schematic perspective view of a multispectral emitting device 110, particularly for a vehicle, having at least one radiation manipulating device.

[0162] The multispectral emission device (110) comprises at least one transmitting unit (150, 150a) for LiDAR radiation, one receiving unit (150, 150b) for LiDAR radiation, and at least two radiation manipulators (130, 140), one of the radiation manipulators (130) being a frequency-selective LiDAR radiation manipulating device and the at least one radiation manipulator (140) for radar radiation being a frequency-selective radar radiation manipulator. a manipulating device, the manipulator for LiDAR radiation (130) and the transmitter unit for LiDAR radiation (150, 150a) being configured such that the manipulator for LiDAR radiation (130) redirects the LiDAR radiation emitted by the transmitter unit for LiDAR radiation (150, 150a) such that at least one radiation cone of the redirected LiDAR radiation extends parallel and coaxially with a light cone emitted by the light source (102). , the radiation manipulator for radar radiation (140) is a frequency selective radar radiation manipulating device, the radiation manipulator for radar radiation (140) and the radar module (111) are characterized in that the second radiation manipulator (140) is configured to redirect radar radiation emitted by the radar module (111) such that at least one radiation cone for the redirected radar radiation extends parallel and coaxially with the light cone emitted by the light source (102), the radiation manipulator for LiDAR radiation (130) is set up such that external LiDAR radiation that has passed through the headlight cover is guided to the receiver unit for LiDAR radiation (150, 150b), and the radiation manipulator for radar radiation (140) is set up such that external radar radiation that has passed through the headlight cover is guided to the receiver unit for radar radiation (150, 150b). This is preferably done coaxially and particularly preferably over four wavelength ranges.

[0163] 1 shows a headlamp 101 having a light source 102 (and optionally a projection lens) and, in some embodiments, a light reflector, not shown here. Furthermore, the headlamp 101 has a light-transmissive headlamp cover 104. The light source 102 is aligned according to the optical axis 7 (primary alignment) so that light is emitted through the headlight cover 104 into a light cone 109. This results in a light propagation path 106 that starts from the light source 102, goes frontward and is laterally limited 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 a lighting module with a short overall length as the light source 102. It is particularly advantageous to use an irregular micro-optical honeycomb condenser as a beam shaping tertiary optic for a collimated LED light source. The shown design architecture allows for a smallest module opening, hence a small dimension beam manipulator with a flexible contour design, and a shortest installation length with high system transmission, allowing to meet ECE standards for headlights as well as switchable angular distribution for glare-free lighting.

[0165] The flexible design of the lighting module's exit window contour allows it to optimally adapt to the minimum emitting manipulator size specified by the LiDAR or radar, while also helping to meet the design specifications of automotive designers (e.g., slot-type headlights).

[0166] In the exemplary implementation shown in Fig. 1, both modules can be interleaved or only one module, in which case a low divergence high beam is preferably interleaved with the LiDAR and radar beam paths. Limiting to only one module reduces the size of the required beam manipulator. Proper selection of the transmission path for the broadband illumination (450-650 nm) simplifies the design and realization of the beam manipulator.

[0167] The typical degradation of the beam manipulator transmission for large angles can be minimized with the lighting module design. Stray light and back reflections occurring in the beam manipulator remain significant. An optimized beam manipulator design, optionally combined with a shielding screen, allows compliance with ECE specifications, for example, for the contrast of the cutoff line of the tilted beam. An optionally synchronized dark scan of the LEDs during a short time window of LiDAR reception can significantly improve the SNR of the LiDAR, although the brightness decreases by a percent or a few percent.

[0168] designation: 150 A combination of a transmitter unit for LiDAR radiation and a receiver unit for LiDAR radiation Transmitter unit for 150a LiDAR Receiver unit for 150b LiDAR By implementing the radiation manipulator in the headlamp, the use of the radiation manipulator allows a space-efficient and design-friendly solution to achieve up to 360-degree detection in the vehicle. Exemplary designs in front headlights (can also be integrated in rear headlights) and range of electromagnetic radiation according to wavelength. For example, a flat reflector shapes and reflects the LiDAR radiation, while a curved reflector deflects the radar radiation without affecting the transmission of the LiDAR radiation. The shape of the reflecting / transmitting array can be any (flat, radially curved, elliptically curved) including flexible pattern arrays of coatings, so that for example, a central pixel can receive a smaller / larger field of view (FOV) than the edge pixels of the LiDAR / radar system. Both components of the beam manipulator transmit the light from the spotlight. The shapes and positions of the emitter (sensor transmitter unit) and the deflector or beam shaper (beam manipulator) are exemplary and may vary.

[0169] FIG. 2 shows a schematic side view of the multi-spectral emitting device (110) shown in FIG.

[0170] Furthermore, the embodiment according to FIG. 2 shows the insertion of a micro-optical system 160 .

[0171] Figures 2 and 3 show additional motion options at bearing points 135 and 145, which allow for focusing of objects in different ranges in each direction determined by the rotational motion, thus increasing the resolution quality of the object. Figure 4 shows a translational motion coupled with a rotational motion.

[0172] Figure 4 shows the coaxial integration of radar and LiDAR in a headlamp using a beam manipulator. This results in a 3D sensor with a common field of view. The fusion of the sensor measurement data therefore allows road user detection using different techniques, which significantly increases the reliability and robustness of driver assistance systems.

[0173] Aggregation and fusion of radar (contour) and LiDAR measurement data to increase the reliability and robustness of sensor data in ADA systems using a multispectral emitting device according to the present invention.

[0174] FIG. 5 shows the functional principle and associated electronic components of a LiDAR system for distance measurement comprising a transmitter (e.g. a light source with transmitting optics such as a VCSEL array) and a receiver (a sensor with receiving optics) as part of a multispectral emitting device according to the invention.

[0175] Preferably, the headlamp includes a LiDAR system for distance measurement. The LiDAR system consists of a transmitter (light source with transmission optics, e.g. VCSEL array), a receiver (sensor with reception optics) and associated electronics (see FIG. 1). The electronics are used to control the light source, read data from the sensor and process the data for distance that can be used for further processing or direct visualization in the vehicle electronics. The light source preferably has a wavelength in the near infrared range of 800-1550 nm. Using the transmission optics, the light source is set in any desired pattern, e.g. point, line or planar illumination. Similar to the already established light control of the headlights, columns in the left and right field of view can be specially controlled for cornering. In addition, any individual region of interest (Region of Interest, ROI) in the field of view can be illuminated to allow rapid more detailed remeasurements. The emitted light is reflected by targets in the vehicle's surroundings and acquired by the reception optics. Coaxial LiDAR systems, where the same optics are used for both the transmitter and receiver, or dual-axis systems with separate optics for the transmitter and receiver are possible. In the case of flash LiDAR systems, the receiving optics are more robust against mechanical influences due to their higher rigidity. However, care must be taken to ensure that the FoV (field of view) of the receiver is equal to or smaller than the FoV of the transmitter. In the case of scanning LiDAR systems, the entire FoV is scanned according to a specific pattern. The emission pattern can be realized using a VCSEL array without moving parts, so is 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 only needs to perform data readout and data processing for each pixel illuminated. This more efficient readout allows for more measurements for each recorded frame, or a higher frame rate.

[0176] The beam manipulator 130 includes a LiDAR reflector that is placed in both the transmit and receive paths of the LiDAR system. The LiDAR reflector reflects in the near infrared range, but not in the visible range of the light of the headlights, nor in the wavelength range of the radar signal. The LiDAR reflector can be curved or planar for additional beam deflection. For targeted alignment of the FoV of the LiDAR, the LiDAR reflector can be aligned by rotation in all three spatial directions, whereby rotations around the axis along the headlights are only relevant for curved LiDAR reflectors. Therefore, the LiDAR light is best centered on the LiDAR reflector. Therefore, translational shifts of the LiDAR reflector in all three spatial directions are also meaningful. This is also necessary if the LiDAR reflector is curved so that only certain orientations are possible. Its rotational properties allow the LiDAR reflector to be used multifunctionally as a mirror for 1D or 2D scanning LiDAR systems, allowing for both resonant and quasi-static behavior of the LiDAR reflector alignment. Under any arbitrary movement of the LiDAR reflector, and therefore almost any angle of incidence, it is necessary to ensure that the near-infrared range is reflected while the visible and radar wavelength ranges are transmitted. Individually switchable VCSEL arrays allow for highly selective sensing of the environment.

[0177] This LiDAR system is particularly suitable for use in a multi-spectral emitting device (110) according to the present invention.

[0178] The LiDAR system comprises a transmitter for LiDAR radiation with a VCSEL array 205 and an optical device 210 for deflecting the radiation. This system is integrated in a multispectral emitting device (110) according to the invention, allowing light pulses therefrom to impinge on a target 220 and for the light signals reflected from the target 220 to be received by a receiver unit. The receiving unit for the reflected LiDAR radiation preferably comprises an optical device 230 and a sensor 240.

[0179] A measurement process 250 is performed to measure the time between the emission of the light pulse and its impact on the target 220. Using conventional time-of-flight analysis, the distance between the transmitter for the LiDAR emission and the target 220 can be determined. This evaluation is performed by an electronic evaluation unit 270.

[0180] A method for manufacturing the multi-spectral emitting device 110, and in particular the radiation manipulators 130, 140, is presented below.

[0181] The coaxial integration of radar, LiDAR and light in a common headlight brings about special challenges for the optical coatings required for the common headlights and their manufacturing techniques. The known coating techniques of physical vapor deposition (PVD), in particular magnetron sputtering, are further developed according to the invention in order to enable / advantage the laser structuring of the layer system and thus to be able to specifically adjust the morphological layer properties, which contribute, for example, to the formation of smooth and clean edges of the laser-structured surface topography in an optimized laser structuring process. In addition to that, the coating requires particularly good adhesion to the substrate material for good laser structuring quality. In the automotive field, this is usually a polymer for weight reasons. This results in the requirement that the large difference in the thermal expansion behavior of the brittle, hard, mainly inorganic coating and the polymer substrate must be exceeded by a particularly stable adhesion in order to complete the structuring process without compromising the adhesion of the coating.

[0182] Laser structuring is primarily used to manipulate radar waves by creating Fresnel zone optics, preferably on transparent conductive oxide layers (e.g. AZO, ITO, ...) or thin metal layers (e.g. Ag, ...). The challenge of radar-optically effective coatings lies solely in the combination of the electrical conductivity of the layer with the necessary optical transparency of 85% or more in the visible spectral range.

[0183] However, for the application of coaxial integration of radar, LiDAR and general headlamp lights described here, this requirement must be extended to all optical layers in the system; the conductive layer for radar beam deflection must be combined with additional dielectric optical materials in a multi-layer system to guarantee the required spectral characteristics of all associated sensor systems and lightings that are equally in the coaxial beam path. This results in the need to develop multi-layer designs at several positions in the beam path of the beam manipulator, which allow the transmission of vehicle lighting in VIS, the reflection or transmission of LiDAR wavelengths and the optical manipulation of the radar beam path. This results in a crucial innovation in optical coatings: by embedding the radar-optically effective conductive layer in another dielectric material, combining all these requirements, the optical multi-layer system must have overall favorable properties for laser structuring, not just for the radar-effective conductive layer.

[0184] Optical multilayer systems are used in particular to achieve the radiation manipulating properties of the radiation manipulators 130, 140. They consist of alternating layers of two or more layer materials, which should have a suitable, usually as significant as possible, difference in refractive index. By arranging alternating thin layers of suitable individual layer thicknesses, a layer stack can be created that specifically influences the spectral distribution of the transmitted and reflected light. The aim of the creative optimization of such multilayer systems is to adjust the constructive or destructive interference of light waves in a specially used wavelength range. Depending on the application, this can be, for example, a reflector (= constructive interference in reflection → reduced transmission), an anti-reflection system (destructive interference in reflection → increased transmission) or, for example, an optical filter with a bandpass or edge filter function for a specific wavelength range.

[0185] Particularly suitable materials are, for example, SiO2 and ZrO2, TiO2, Ta2O5, Nb2O5 or Si3N4, which preferably comprise an anti-reflection system and are in turn applied to a carrier substrate and thus have customized radiation manipulating properties.

[0186] For example, Figure 6 shows the reduction in spectral reflectance that can result from using an appropriate single-sided coating, which results in significantly reduced reflectance over a wide wavelength range.

[0187] Another special requirement of the optical coating is a particularly wide optical bandwidth: due to the different wavelength ranges manipulated by radar and LiDAR, and because vehicle lighting in the visible spectral range needs to be communicated almost losslessly and without color shift throughout the entire coaxial system, optical specifications exist for the entire wavelength range between 400 nm and 4 mm, i.e. spanning four decades.

[0188] In addition, optical multilayer systems ensure spectral performance for radar, LiDAR, and lighting, especially at oblique angles of incidence and over a wide angular range. This complicates new optical multilayer designs to be developed, for example by increasing the number of layers required, which conflicts with the requirement to ensure good laser structureability.

[0189] The combination of all these requirements in a laser-structurable multi-layer coating system for a coaxial beam path is new in the field of optical coating design and manufacturing.

[0190] FIG. 7 shows a schematic diagram of a phase shifting structure suitable for phase control of an incident wave, the structure comprising a substrate 400, 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.

[0191] FIG. 8 shows the dependence of phase 500 on the patch size in mm.

[0192] The requirements to be met are preferably the following: Phase control of incident waves by phase shift structure Reflective: patches, circles, crosses, ... Diffractive: stripes, rings, ...., · assignment: Coverage of the entire phase angle range (0°-360°), Avoidance of dependency of structure dimensions on excessive phase variations (manufacturing tolerances!), Low phase variation in the frequency range 76-81GHz.

[0193] FIG. 9 shows a reflective array 600 according to the invention with patch sizes adapted to the desired phase positions. This reflective array 600 is a preferred embodiment of a radiation manipulating device. This reflective array 600 is preferably a printed circuit board-like structure with a transparent substrate in the middle and a conductive transparent structured coating on the outside. The upper side is made up of squares (patches) and the lower side is entirely conductive (ground plane). Measurements have shown that a 90° deflection of the waves is possible even when the reflector / radiation manipulator is positioned at 56.8°. This is possible because each patch adds a pre-calculated phase shift to the radar beam, resulting in a 90° reflection. The transparency allows light and LiDAR to pass through the structure.

[0194] FIG. 10 shows a schematic diagram of the deflection of an electromagnetic wave by the array shown in FIG.

[0195] The beam path 19 of the propagating radar radiation or RF waves emitted by the radar module 12 initially travels transversely to the radiation direction x, in particular at least approximately orthogonal thereto and / or at least approximately perpendicular thereto, and is then deflected by approximately 90° by the radiation manipulator 13 for the LiDAR radiation, or in particular for the radar radiation, whereby a detection area 8 is defined by the radiation manipulator for the LiDAR radiation, or in particular for the radar radiation, and / or by the respective radiation deflection structure 13, 140. 90° by the radiation manipulator for the LiDAR radiation, or in particular for the radar radiation, and / or by the respective radiation deflection structure 13, 140, whereby a detection area 8 is defined.

[0196] The arrow z in Fig. 1 indicates the radiation direction (emission direction) or the corresponding longitudinal position of each component in the radiation direction, whereby the respective longitudinal positions starting from the light source are detected for example. The radar module and the radiation manipulator for LiDAR radiation or radar radiation and optionally also the antenna unit are arranged at least approximately at the same longitudinal position z. The headlamp cover 104 extends backwards (rearwards) to a longitudinal position smaller than the longitudinal position of the radar module and radiation manipulator for LiDAR radiation or radar radiation. In other words, the headlight cover not only overlaps the radar module and radiation manipulator for LiDAR radiation or radar radiation, but also completely covers these two components in the radiation direction.

Claims

1. A multispectral sensor headlight system, in particular for a vehicle, comprising a multispectral emitting device (110) set up to emit electromagnetic radiation and set up to detect at least reflected radar radiation, comprising: a headlight (101) including a light-transmitting headlight cover (4) and a light source (102) arranged behind the headlight cover for emitting visible light as headlight light; The vehicle includes a radar module (111) configured behind a headlamp cover and having a radar antenna unit (112) integrated into the headlamp, the multispectral emitting device (110) having at least one radiation manipulating device; Together with the control unit, The multispectral emission device (110) comprises at least one transmitting unit (150, 150a) for LiDAR radiation and one receiving unit (150, 150b) for LiDAR radiation, and at least two radiation manipulators (130, 140), one of the radiation manipulators (130) being a LiDAR radiation manipulating device, the at least one radiation manipulator (140) for radar radiation being a radar radiation manipulating device, and the radiation manipulator (130) for LiDAR radiation and the transmitting unit (150, 150a) for LiDAR-S being configured such that the radiation manipulator (130) for LiDAR radiation redirects the LiDAR radiation emitted by the transmitting unit (150, 150a) for LiDAR radiation. the radiation manipulator (130) for LiDAR radiation is configured to direct external LiDAR radiation that has passed through the headlamp cover to the receiving unit (150, 150b) for LiDAR radiation, the radiation manipulator (140) for radar radiation is configured to direct external radar radiation that has passed through the headlamp cover to the receiving unit (111) for radar radiation, and the transmitting unit (150, 150a) for LiDAR radiation, the radiation manipulator (130) for LiDAR radiation, the radar module (111), and the second radiation manipulator (140) are configured so that at least one radiation cone (104) of the redirected LiDAR radiation and at least one radiation cone of the redirected radar radiation can be aligned; The multispectral emitting device (110) is connectable to a control unit; The control unit is adapted to control the radiation manipulators (130, 140) during operation of the multispectral emission device (110), so that the radiation manipulators (130, 140) can be rotated independently of each other around at least one of the axes, the FOVs of the LiDAR radiation and the radar radiation can be set independently of each other by individual rotation of the at least two radiation manipulators (130, 140), and the individual rotation of the radiation manipulators (130, 140) can be used to increase the accuracy of target detection.

2. 2. The multispectral sensor headlight system according to claim 1, wherein wavelength combinations are generated over four orders of magnitude from 400 nm to 4 mm.

3. 2. The multispectral sensor headlight system according to claim 1, characterized in that at least one radiation cone (104) of redirected LiDAR radiation, at least one radiation cone of redirected radar radiation, and the radiation cone of light of the headlamp travel parallel and / or coaxially and / or overlapping with one another.

4. 3. The multi-spectral sensor headlight system of claim 2, wherein at least one radiation cone (104) of redirected LiDAR radiation and at least one radiation cone of redirected radar radiation further overlap.

5. 10. The multi-spectral sensor headlight system of claim 1, wherein the radiation cone of the headlight light also travels coaxially with the radiation cones of the LiDAR and radar radiation.

6. 2. The multispectral sensor headlight system according to claim 1, wherein the radiation manipulator (130) for LiDAR radiation is designed so that the LiDAR radiation emitted by the transmitter unit (150, 150a) for LiDAR radiation is redirected and at least one further radiation cone for the redirected LiDAR radiation is formed, and at least one further receiver unit for LiDAR radiation is provided, and the further receiving unit for LiDAR radiation is configured so that the further LiDAR radiation from the outside that has passed through the headlight cover is guided to the receiving unit for the further LiDAR radiation.

7. 2. The multispectral sensor headlight system according to claim 1, characterized in that the radiation manipulator (140) for radar radiation is designed so that the radar radiation emitted by the radar module (111) is redirected and at least one further radiation cone for the redirected radar radiation is formed, and at least one further receiving unit for radar radiation is provided, which is configured so that further radar radiation from the outside that has passed through the headlight cover is directed to the receiving unit for the further radar radiation.

8. 2. A multispectral sensor headlight system according to claim 1, characterized in that at least one of the radiation manipulators (130, 140) is mounted rotatably about at least one axis.

9. 9. The multispectral sensor headlight system according to claim 8, characterized in that during assembly of the multispectral emitting device (110), at least one of the radiation manipulators (130, 140) is mounted rotatably about the z-axis.

10. 9. The multispectral sensor headlight system of claim 8, wherein at least one of the radiation manipulators (130, 140) is mounted rotatably about the y-axis during operation of the multispectral emission device (110), allowing the horizontal FOV to be set quickly and reliably.

11. 9. The multispectral sensor headlight system of claim 8, wherein at least one of the radiation manipulators (130, 140) is mounted rotatably about the x-axis during operation of the multispectral emission device (110), allowing for fast and reliable setting of the vertical FOV.

12. 9. The multispectral sensor headlight system of claim 8, wherein during operation of the multispectral emission device (110), the at least two radiation manipulators (130, 140) can rotate independently of each other about at least one of the axes, and by rotating the at least two radiation manipulators (130, 140) individually, the FOVs of the LiDAR emission and the radar emission can be set independently of each other.

13. 2. A multispectral sensor headlight system according to claim 1, characterized in that at least one of the radiation manipulators (130, 140) is translationally mounted.

14. 2. The multispectral sensor headlight system according to claim 1, characterized in that the transmitting unit (150, 150a) for LiDAR radiation is thermally insulated so that a temperature-dependent wavelength drift of the LiDAR transmitting unit is avoided.

15. 2. A multispectral sensor headlight system according to claim 1, characterized in that the structural pattern is introduced into the radiation manipulator by thin film ablation or thin film application, or the radiation manipulator is created by thin film ablation or thin film application or by the application of a membrane.

16. 16. A method for manufacturing a multispectral emission device (110) for a multispectral sensor headlight system according to any one of claims 1 to 15, characterized in that by forming at least one radar radiation manipulating device, in particular in the form of a frequency-selective radiation deflection structure, the radiation manipulator has or is at least partially formed by a conductive portion in the form of an optically transparent conductive layer, and a structural pattern for generating targeted reflection of radar wavelengths is introduced into the radar radiation manipulator by thin film ablation, in particular by a laser, and further characterized in that by forming at least one LiDAR radiation-manipulating device, in particular in the form of a frequency-selective radiation deflection structure, the LiDAR radiation manipulator has or is at least partially formed by a conductive portion in the form of an optically transparent conductive layer.

17. The optical radiation of the headlights is emitted in the form of a light cone, the LiDAR radiation is emitted in the form of a primary LiDAR signal as bundled electromagnetic radiation in a LiDAR radiation cone (104), the radar radiation is emitted in the form of a primary radar signal as bundled electromagnetic radiation in a radar radiation cone, the headlight radiation cone, the LiDAR radiation cone, and the radar radiation travel parallel and coaxially with each other, the secondary LiDAR signal reflected by at least one object and the secondary radar signal reflected by the object are detected and analyzed to obtain the following information: - angle or direction to the object, - distance to the target (from the time difference between sending and receiving), - relative movement between the multispectral emitting device (110) and the object; are obtained from the analysis, and the parallelism and coaxiality of the LiDAR radiation cone and the radar radiation cone are considered in the evaluation; The multispectral emitting device (110) is connected to a control unit, 16. A method for operating a multispectral emission device (110) of a multispectral sensor headlight system according to any one of claims 1 to 15, characterized in that the control unit controls the radiation manipulators (130, 140) during operation of the multispectral emission device (110) so that the radiation manipulators (130, 140) are each rotated independently of one another about at least one of the axes, and the FOVs of the LiDAR radiation and the radar radiation can be adjusted independently of one another by the individually caused rotations of the at least two radiation manipulators (130, 140), and the individually caused rotations of the radiation manipulators (130, 140) are used in real time to increase the accuracy of target detection.

18. 18. The method according to claim 17, characterized in that at least one further LiDAR radiation cone and / or one further radar radiation cone is emitted so that objects are detected with angular resolution.

19. 18. A method for operating a multispectral emitting device (110) of a multispectral sensor headlight system according to any one of claims 1 to 15 with the features of claim 17, characterized in that a wavelength-selective structure is used which affects the spectral range specific to the sensor and thus reduces thermal effects due to undesired absorption.

20. A vehicle comprising a multispectral sensor headlight system comprising a multispectral emitting device (110) according to any one of claims 1 to 15 and a unit for fusion of sensor measurement data for radar and LiDAR, The vehicle includes a control unit; The control unit is adapted to control the radiation manipulators (130, 140) during operation of the multispectral emission device (110), so that the radiation manipulators (130, 140) can be rotated independently of each other around at least one of the axes, the FOVs of the LiDAR radiation and the radar radiation can be set independently of each other by individual rotation of the at least two radiation manipulators (130, 140), and the individual rotation of the radiation manipulators (130, 140) can be used to increase the accuracy of target detection.

Images