EP3867665A1 - Radar- und lichtausstrahlungsanordnung für fahrzeuge zum ausstrahlen von licht und radarstrahlung sowie verfahren und verwendung - Google Patents
Radar- und lichtausstrahlungsanordnung für fahrzeuge zum ausstrahlen von licht und radarstrahlung sowie verfahren und verwendungInfo
- Publication number
- EP3867665A1 EP3867665A1 EP19797985.9A EP19797985A EP3867665A1 EP 3867665 A1 EP3867665 A1 EP 3867665A1 EP 19797985 A EP19797985 A EP 19797985A EP 3867665 A1 EP3867665 A1 EP 3867665A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radar
- radiation
- light
- reflector
- headlight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0017—Devices integrating an element dedicated to another function
- B60Q1/0023—Devices integrating an element dedicated to another function the element being a sensor, e.g. distance sensor, camera
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
- H01Q1/3291—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted in or on other locations inside the vehicle or vehicle body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/23—Combinations of reflecting surfaces with refracting or diffracting devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
- H01Q19/062—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens for focusing
- H01Q19/065—Zone plate type antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/106—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using two or more intersecting plane surfaces, e.g. corner reflector antennas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9323—Alternative operation using light waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2013/9327—Sensor installation details
- G01S2013/93277—Sensor installation details in the lights
Definitions
- Radar and light emitting device for vehicles for emitting light and radar radiation as well as method and use
- the present invention relates to a radar and light emission arrangement, in particular for vehicles, set up for emitting light and radar radiation and set up for detecting driving situations in a detection area by means of the radar radiation, in particular for the purpose of assisting in the navigation of the vehicle.
- the invention also relates to a method for emitting light and radar radiation and for detecting at least reflected radar radiation.
- the present invention also relates to the use of the radar and
- the invention relates to a device and a method according to the preamble of the respective independent claim.
- Radar technology is particularly important for distance measurements. However, it is questionable at which position on the vehicle the radar technology should be arranged in a sensible manner and possibly should interact with other detection components.
- Radar technology in the bumpers of a road vehicle has a high risk of damage, especially in the event of small impacts or only slight contact of the vehicle with the surroundings.
- compromises for the vehicle design have to be accepted.
- Another challenge when integrating radar components in vehicles (especially cars), especially in the front, is to attenuate the transmit and receive signals on the individual layers of material (especially on the bumper) and on the paint layers compensate. Artifacts and echo images in the radar signal usually have to be eliminated. In other words: the exact evaluation of
- US 2008/0158045 A1 describes a vehicle headlight with a light unit and with a radar unit integrated in the headlight, which comprises an antenna and a control unit, the control unit being arranged below the light unit and below a light reflector and on a bottom wall of the
- Lamp housing is attached, and wherein the antenna is attached to the light reflector or is arranged in an area spanned or spanned by the light reflector, in particular in order to ensure good radiation efficiency.
- US 2011/0279304 A1 describes a vehicle headlight with a light unit and a light reflector and with a projection lens and with a radar unit integrated in the headlight, which comprises an antenna and a control unit, the control unit and the antenna being arranged between the light unit and the projection lens, wherein the antenna is arranged such that an optical
- Light reflector is arranged.
- the object is to provide a device and a method with which the radiation of light and radar radiation and the detection of reflected radiation by headlights can be optimized, in particular for vehicles or motor vehicles.
- the task is to emit light and radar radiation and the
- Exemplary embodiments can be combined with one another, unless this is explicitly denied.
- a radar and light emission arrangement is provided, in particular for
- Vehicles set up for emitting light and radar radiation and set up for detecting at least reflected radar radiation, comprising: a headlamp with a light-transparent headlamp cover and a light source arranged behind the headlamp cover, that is to say in the emission direction in front of the headlamp cover, and a light reflector; and with a radar module with a radar antenna unit which is arranged behind the headlight cover and is integrated into the headlight.
- the radar and light emission arrangement has at least one radar radiation shaping device, in particular a frequency-selective radar radiation shaping device, in particular comprising a radar radiation shaping device integrated in the headlight cover.
- a radar radiation shaping device in particular a frequency-selective radar radiation shaping device, in particular comprising a radar radiation shaping device integrated in the headlight cover.
- the radar technology can be optimized with advantageous integration into the headlamp with high degrees of freedom.
- the radar module can in particular in the radiation direction between the
- Headlight cover and the light source is arranged, the
- Headlight cover has a frequency-selective radar transmission structure. It has been shown that the radar module is arranged as far forward as possible in
- Radiation direction x is advantageous, in particular close to
- Headlight cover especially in an overlapping arrangement with the
- the invention enables
- the headlight cover can also be used as a radome or antenna dome.
- the headlight cover can also be used as a radome or antenna dome.
- plastics e.g. Polycarbonate, or glass exist.
- Headlight cover or its material is (per se) transparent for light and
- Radar is one of the already available or established technologies for
- This radar technology can e.g. Laser radar and / or
- the radar and light emission arrangement comprises at least one component from the following group, each of which is in
- radar reflector at least one frequency-selective radar transmission structure. This also provides advantages in relation to the relative arrangement of the components in the headlight to one another.
- the arrangement of the radar module and / of the radar reflector can be described in an analogous manner, that is to say with the projection lens in the position of the light source described here.
- a reference to the light source can also be interpreted as a reference to a projection lens.
- the headlight cover can serve as the main radome for the radar system.
- the headlight cover can be made of polycarbonate or glass, for example.
- the headlight cover is preferably transparent to light and also to HF waves. To minimize reflections, especially in the frequency range from 76 to 81 GHz, the thickness of the Headlight cover can be selected as an integral multiple of half the wavelength.
- the radar module is arranged outside (in particular below or behind) a light cone emitted by the light source.
- the radar module can be arranged outside the light propagation area, that is laterally spaced from the optical axis of the light source (s). According to one
- the radar module is arranged below a tangential plane or horizontal plane delimiting the light reflector downwards.
- the radar module is arranged outside (in particular below) an optical axis or an axis corresponding to the main orientation of the light reflector or the light source. This also makes it possible to optimize the relative arrangement to one another.
- a / the radar module can be arranged behind the / the light sources, in particular when the optical axis of the radar module is aligned in the
- radar radiation shaping device may be arranged.
- Radar emitters and receivers are not arranged in the beam path, but outside of it, especially below it.
- a deflection of the radar radiation By reflecting the radar radiation at the reflector and by deflecting the radar radiation in the range from 60 to 120 °, in particular 90 °, a deflection of the radar radiation
- Radar radiation is carried out towards the front of the vehicle and at the same time one can
- Beam shaping can be ensured.
- the radar module or a radar emitter and receiver can be aligned vertically upwards.
- a transparent reflector in particular a so-called Fresnel reflect array
- the antennas used in the radar module are preferably planar antennas (eg patch / slot).
- the antennas can preferably be integrated into the radar module via transmission lines (eg microstrip lines) without additional adapters.
- the antennas can consist of several individual antennas or array antennas, in particular in a two-dimensional arrangement.
- the reflector is transparent to the light from the light source and only reflects the radar radiation and directs it forward through the cover. The reflector forms the radar radiation into a desired lobe or surface shape.
- the cover can be coated to provide the frequency selective transmission structure and only radar radiation in a certain band range
- the radar module is arranged in an area below the headlight cover in an overlapping arrangement with the headlight cover. This also provides an advantageous decoupling from the lighting function.
- the headlamp cover or its geometry can also be used as a radome, so that good efficiency and quality of evaluation can be ensured.
- the radar module is arranged on the bottom of a housing of the headlight, in particular in a mechanical coupling to the bottom. This also favors decoupling from the lighting function.
- an intermediate level with a radiation-effective cover is provided on the radar module or directly above the radar module, with the cover in particular in the form of a plastic, in particular
- Polycarbonate layer in particular with a one-sided coating that is at least opaque with respect to light. This also provides additional degrees of freedom when setting the
- Radiation characteristics can be largely independent of the
- an advantageous arrangement for the radar module can be realized, in particular with a cover in the form of a heat shield.
- the cover can be heat-insulating or heat-shielding or at least have a corresponding heat-shielding layer.
- the at least one radar radiation shaping device is arranged in a radiation direction of the radar radiation.
- the at least one radar radiation-shaping device is arranged in the direction of reflection of the radar radiation.
- the at least one radar radiation shaping device is flat, in particular planar or curved.
- the at least one radar radiation-shaping device is frequency-selective, in particular in that the radar radiation-shaping device comprises a frequency-selective radar transmission structure.
- the radar radiation shaping device is in particular frequency-selective in that the
- Radar radiation shaping device has dimensions which are matched to the wavelength of the radar radiation emitted (frequencies).
- the at least one radar radiation-shaping device is arranged in the radiation direction of the light source.
- At least two radar radiation-shaping regions are provided on the at least one radar radiation-shaping device. This also makes it possible to individually influence a first part of the radar radiation and a second part of the
- the at least two radar radiation-shaping regions are arranged / formed in the same radar radiation-shaping device. This also enables extensive function integration.
- the different radar radiation-shaping regions can comprise at least one electrically conductive region and at least one electrically non-conductive region.
- the radar radiation forms, in particular, a radiation front, which by means of the
- the arrangement according to the invention can be reflected in particular in the electrically conductive areas, so that an interference pattern can be predefined.
- Radar module or regarding the arrangement of the radar module relative to others
- an optical axis of the radar module or the radar antenna unit is oriented at least approximately vertically upwards (perpendicularly) in the intended arrangement of the headlight.
- the optical axis of the radar module or the radar antenna unit is directed towards a radar reflector integrated behind the headlamp cover in the headlamp and in the radiation direction behind the light source, the optical axis of the radar module being aligned with the radar reflector in such a way that the radar module can be arranged on the bottom of the headlamp. This also enables local decoupling of the radar module from the light propagation path.
- the relative placement of the integrated antenna and radar module remains comparatively flexible, especially since it is sealed off from the outside of the headlamp.
- the relative placement described here has proven to be particularly advantageous.
- a / the radar antenna unit is arranged on / on an upper side of the radar module. This relative arrangement is also advantageous with regard to decoupling from the light propagation path.
- the radar antenna unit is designed as a planar antenna (in particular in the form of a patch and / or slot antenna). This facilitates integration, particularly in the arrangement according to the invention.
- the radar antenna unit has a plurality of individual antennas or antenna arrays in a two-dimensional arrangement. This favors a high degree of variability when setting the radiation characteristic.
- the radar antenna unit is integrated into the radar module by means of microstrip lines without additional adapters. This also facilitates integration.
- the radar module can in particular all those HF front ends and electronic
- the antennas are all advantageously located at the foot (bottom) of the headlight housing in the vicinity of the headlight cover, in particular in an arrangement at least partially overlapped by the headlight cover.
- a radiation-effective cover is arranged, in particular to optically isolate the radar module.
- the cover advantageously consists of a flat, thin plastic (in particular polycarbonate), the plastic on one side can be coated dark.
- the cover is preferably arranged therefor
- the radar and light emission arrangement has an arrangement arranged behind the headlight cover in the headlight
- the radar reflector is arranged in an arrangement that overlaps or overlaps the radar module, in particular in such a way that the radar module is completely covered by the radar reflector alone or together with the headlight cover in plan view against the optical axis of the radar module.
- the radar reflector is arranged together with the radar module at least approximately in the same longitudinal position, in particular completely overlapped or covered by the headlight cover, in particular in a last third of the longitudinal extent of the radar and
- the radar reflector is arranged below an optical axis or below an axis corresponding to the main orientation of the light reflector or the light source. This also provides an advantageous relative arrangement of the components to one another.
- a radar reflector and optionally also a high-frequency lens in the area of the headlight cover can adapt the radar radiation in a particularly flexible manner (that is, with high variability) according to the respective situation in the arrangement according to the invention, in particular largely decoupled from the
- the radar system is integrated into a motor vehicle headlight, its radar signal can be tailored to the desired detection area, in particular by means of at least one structured conductive layer / surface (radar transmission structure, in particular with patterns in the sense of functional small structures) in the headlight cover.
- the headlight can be one
- the beam path of the radar radiation is deflected by means of the radar reflector in the range from 70 to 110 °, in particular in the range from 90 °, in particular at least approximately in the radiation direction of the radar and
- the radar reflector has a two-dimensional one
- the radar reflector in particular the inside thereof, is at an inclination in the range of 35 to 60 °, in particular 40 to 50 °, relative to
- Radiation direction x or arranged relative to the horizontal, at least
- the radar reflector is arranged relative to the headlight cover such that the radar reflector and the
- Headlight cover a roof structure covering the radar module with the
- Radar reflector adjustable by motor. This also enables great variability and can expand the range of functions.
- the radar reflector has a three-dimensional extent at least in sections and is designed to also laterally reflect radar radiation. Last but not least, this also extends the functionality. In particular, even small installation space can be ensured high / wide functionality with simple means.
- the radar reflector is made up of a plurality of
- the radar reflector is designed as a Fresnel reflector, both sides of the radar reflector having a frequency-selective radar transmission structure, and the radar reflector being set up for focusing and / or
- the radar reflector consists of substrate material which is transparent to light and radar radiation and has a device which forms radar radiation, in particular in the form of a coating or as an electrically conductive surface, in particular with a frequency-selective radar transmission structure. This can also ensure a particularly simple and robust construction.
- the electrically conductive layer or surface regardless of its arrangement, can be formed in particular from copper.
- the radar reflector has a radar radiation-shaping device and is arranged relative to the headlamp cover in such a way that the radar radiation from the radar module to the outside of the headlamp cover passes / shines through the respective frequency-selective radar transmission structure at least twice.
- This also provides a high degree of variability.
- the radar radiation can be conducted via a first filter provided by the radar reflector (first radar transmission structure) and, after deflection, also via a second filter provided by the headlight cover (second or further radar transmission structure).
- the radar reflector is formed from individual reflector elements, each of which is rectangular or triangular, in particular with the same side length. This provides a kind of modular structure for high variability, especially with a simple basic structure for each individual reflector element.
- the radar reflector has a light-transparent, electrically conductive oxide layer or electrically conductive surface on at least one of its surfaces. This provides good reflectivity.
- the radar transmission structure can be provided at least partially by means of the oxide layer. This type of integration of the radar transmission structure provides not only a comparatively high variability (key word: influencing the type of radiation propagation) but also advantages in terms of space requirements.
- the radar reflector is light-transparent (transparent to light or visible radiation) and radar radiation opaque (reflecting for radar or RF waves). This also provides good variability in arrangement relative to the light source.
- the radar reflector is set up to shape the radar radiation, in particular in the form of a club or surface. This extends the
- the radar reflector is set up to redirect and / or collimate the incoming RF waves.
- the radar reflector can be referred to as an intermediate structure that is selective for radar radiation between the radar module or a radar antenna and the RF wave in space.
- the reflector can have the following shapes:
- Planar reflector The reflector is set up to reflect the radiation of the antenna in accordance with Snell's law.
- Shaped reflector The radiation is reflected and scattered depending on the 3D shape of the reflector, especially in the lateral direction.
- An increase or decrease in the EM wave intensity (directivity of the radiation behavior) can be set or specified by suitable shaping of the reflector.
- Fresnel reflector The radiation is collimated and / or focused.
- the reflector collimates the wave or adjusts the RF wave components in phase.
- the reflector is set up to convert spherical waves into planar waves.
- the thickness of a substrate of the reflector is advantageously an odd multiple of the quarter of the wavelength. This favors conversion into planar waves.
- the radar reflector can consist of substrate material which is transparent not only for the light but also for the RF waves.
- the radar reflector can consist of substrate material which is transparent not only for the light but also for the RF waves.
- Reflectivity can be adjusted or specified by coating one or two sides of the substrate with a very thin, transparent, conductive oxide (TCO).
- TCO transparent, conductive oxide
- the Fresnel reflector two surfaces are preferably provided which are coated by means of the TCO.
- the planar or shaped reflector provision is preferably made only for a TCO-coated surface.
- the radar reflector is preferably arranged in the vicinity of the headlight housing, clearly in front of the light source.
- the arrangement is preferably between the headlight cover and the projection lens (in the case of headlights with a projection method) or between the headlight cover and the light source (in the case of headlights with the reflector method).
- the radar reflector is inclined or aligned in such a way that the transmitting RF waves can properly illuminate the intended objects and that the receiving waves can be focused on the receiving antenna.
- At least one or the respective one are provided. According to one embodiment, at least one or the respective one
- Radar radiation shaping device with frequency-selective radar transmission structure at least in sections has a periodic arrangement of structure patterns, with the structure patterns in particular in a concentric arrangement. This also makes it possible in a particularly flexible manner to design and optimize the arrangement according to the invention with regard to individual applications.
- the radar radiation-shaping device is designed with a frequency-selective radar transmission structure as a coating or as a film or as an electrically conductive surface. This can further simplify the construction.
- a coating can also be provided as a supplement to integrated patterns or structures.
- the headlight cover forms a substrate for the radar radiation shaping device or for the frequency-selective radar transmission structure.
- This provides a particularly robust structure, in particular in the form of a basic module, which can be used for various applications and further adapted.
- the radar radiation shaping device has a conductive part in the form of a light-transparent, electrically conductive oxide layer. This also enables the reflection properties to be optimized.
- the radar transmission structure can be a periodic arrangement of patterns (keyword:
- Unit cell which are set up to filter over the intended frequency band, e.g. Bandpass filter at 76 GHz to 81 GHz.
- the radar transmission structure can also be integrated into the headlight cover, the headlight cover serving as a substrate for the radar transmission structure.
- a conductive part of the radar transmission structure preferably consists of ultra-thin, transparent, conductive oxide or a corresponding oxide layer (TCO).
- TCO corresponding oxide layer
- Headlight cover perform at least two functions: filter unwanted RF waves outside the intended band (eg 76 to 81 GHz); and specify the radiation characteristics of the desired RF waves (in particular the direction of emission, the type and extent of collimation and / or scattering).
- the radar transmission structure can have different configurations, which are not limited to simple geometries (e.g. complementary loops, crosses, stripes), but can e.g. also contain more complex meander-based slots (especially for the bandpass), in particular to reduce the size of the unit cell and to achieve better angular stability.
- simple geometries e.g. complementary loops, crosses, stripes
- complex meander-based slots especially for the bandpass
- the transmission structures can be set up for bundling, deflecting and / or filtering the radar waves, so that different scanning ranges, ranges and deflection angles can be realized.
- the headlight cover consists of material that is transparent to light and radar radiation, in particular of substrate material for the frequency-selective radar transmission structure in the form of an integrated coating. This enables an even more extensive integration of functions, especially with a robust design.
- the headlight cover has a thickness
- the on both sides (inside and outside)
- Headlight cover a frequency-selective radar transmission structure is provided. This favors a particularly targeted influence on the radiation characteristics.
- the radar and light emission arrangement is designed without a projection lens, in that the radar beam path runs from the radar module via the radar reflector and the headlight cover and by the light propagation path from the light source and the light reflector runs directly over the headlight cover, that is to say in each case without further intermediate optical or radiation-effective components.
- the entire arrangement is without a projection lens, that is to say without a lens.
- this also provides a simple, compact, robust construction.
- the headlight cover is relative to the
- Radar module arranged that the headlight cover forms a radome for the radar module. This can further optimize the functional integration in the headlights,
- a selective scanning of the surrounding situation can be implemented via a transmission and reception array, in which not only the front area (frontal) but optionally also the side area (lateral) can be covered.
- the number of sensor systems required can also be reduced in the headlight.
- a significantly improved resolution can also be realized.
- a transmission and reception array in which not only the front area (frontal) but optionally also the side area (lateral) can be covered.
- transparent plastic substrates can be coated with transparent but electrically conductive layers, which layers can subsequently be removed locally.
- structures that can be designed for the application can also be applied using a laser method for thin-layer removal, with the advantage of largely residue-free removal without damage to the substrate and without optical disadvantages.
- the radar transmission structure can optionally be applied in a lithographic manner and / or by means of masked coating and printing.
- Light emission arrangement in particular for vehicles, set up for emitting light and radar radiation and set up for detecting at least reflected radar radiation, with:
- a radar module arranged behind the headlight cover and integrated into the headlight with a radar antenna unit; the radar module in
- Radiation direction x is arranged between the headlight cover and the light source, the headlight cover being a frequency selective Radar transmission structure, wherein the radar module below an optical axis or an axis corresponding to the main orientation of the light reflector or
- the radar module being arranged in an area below the headlamp cover in an overlapping arrangement with the headlamp cover, an optical axis of the radar module or the radar antenna unit in the intended arrangement of the headlamp being oriented at least approximately vertically upwards
- the radar and Light emission arrangement has a radar reflector arranged behind the headlight cover and integrated in the headlight, the radar module being arranged below the radar reflector, the radar reflector being arranged below the optical axis or an axis corresponding to the main orientation of the light reflector or the light source, with one / the beam path the radar radiation is deflected by means of the radar reflector in the range of 70 to 110 °, in particular in the range of 90 °, in particular at least approximately into the
- Radiation direction x of the radar and light emission arrangement is aligned, and wherein the radar reflector, in particular the inside thereof, is arranged with an inclination in the range of 35 to 60 °, in particular 40 to 50 °, relative to the radiation direction x or relative to the horizontal, at least in sections.
- Light emission arrangement in particular a radar and
- Light emission arrangement for emitting light and for frequency-selective emission of radar radiation and for specifying a radar detection area by means of at least one, in particular by means of at least two radar radiation-shaping devices, in particular frequency-selective radar transmission structures, which
- Devices are / are also provided in or on at least one side of a light-transparent headlamp cover of the radar and light-emitting arrangement, in particular in the beam path, starting from a radar module in series one behind the other in at least two positions, including a position outside the light cone
- Light source e.g. on a radar reflector arranged above the radar module
- a radar module of the radar and light emission arrangement outside a light cone emitted by the light source in particular below the at least one, in particular below the at least two
- radar radiation shaping devices is arranged, with an upward,
- the vehicle can be an automobile (motor vehicle for the road) or an aircraft or a watercraft.
- Light emission arrangement for vehicles and set up for emitting light and radar radiation and set up for detecting at least reflected radar radiation with a headlight with a light-transparent headlight cover and a light source arranged behind the headlight cover and a light reflector, and with a radar module arranged behind the headlight cover and integrated into the headlight with a radar antenna unit, in particular by means of a previously described radar and light emission arrangement, produced by forming at least one radar radiation shaping device, in particular in the form of
- Frequency-selective radar transmission structure at least also on or in the headlamp cover (optionally used / serving as a substrate), the radar radiation-shaping device having a conductive part in the form of a light-transparent, electrically conductive oxide layer or being at least partially formed thereby, and wherein in the radar radiation-shaping device by thin-layer removal a structural pattern is introduced, in particular by means of a laser.
- the aforementioned object is also achieved by a method for emitting light and radar radiation and for detecting at least reflected radar radiation in each case by means of a radar and light emitting arrangement, in particular by means of a radar and light emitting arrangement described above, in particular in a vehicle, wherein light from a Light source of a headlamp is emitted by a light-transparent headlamp cover according to the direction of an optical axis of the light source, and wherein radar radiation is emitted by a radar module integrated in the headlamp behind the headlamp cover; being the
- Radar radiation is radiated from the radar module in a direction transverse, in particular at least approximately orthogonally, to the optical axis of the light source and via at least one radar radiation shaping device provided at least on or in the headlight cover, in particular in the form of a frequency-selective radar transmission structure, in at least one radiation direction of the radar and
- Light emission arrangement is deflected, in particular at least approximately parallel to the optical axis of the light source, in particular in the direction of travel of a headlight aligning vehicle, the radiation characteristic of the radar radiation being predetermined by means of the at least one radar radiation shaping device.
- the method comprises emitting the radar radiation via at least two frequency-selective radar transmission structures which are arranged in the beam path, starting from the radar module, in a row in at least two positions, the positions comprising: a position at an outside of the light cone of the light source (for example above the Radar module) arranged
- Radar reflector and a position on or in the headlight cover; wherein the optical axis of the radar module is in particular aligned at least approximately orthogonally to the optical axis of a light source of the headlight. This also enables the radiation characteristic to be optimized in a particularly variable or exact manner.
- the respective radar transmission structure can optionally have a structure pattern with a plurality of different structures. This extends the
- the method also includes detection of reflected radar radiation, the reflected radar radiation being detected in particular on the opposite beam path. This also extends the range of functions.
- a structure pattern is introduced into the radar radiation shaping device by thin-layer removal or thin-layer application. This can be done, for example, by laser ablation, by means of a film, by means of a printing,
- Coating or vapor deposition sputtering, thermal evaporation and / or electron beam evaporation
- lithography Coating or vapor deposition (sputtering, thermal evaporation and / or electron beam evaporation) and / or by means of lithography.
- the radar radiation shaping device is by means of
- Thin layer removal or by means of thin layer application or by applying a film Thin layer removal or by means of thin layer application or by applying a film.
- Figure 1 is a side view in a schematic representation of a radar
- Figure 2 shows a perspective view in a schematic representation
- Radar reflector and radar antenna units of a radar and light emission arrangement according to an embodiment
- Figure 3 is a plan view in a schematic representation
- Radar transmission structure of a radar and light emission arrangement according to an exemplary embodiment
- Figure 4 is a side view in a schematic representation of a radar
- a headlight 1 is shown, the light source 2 (optionally also
- Headlight cover 4 having an outer surface 4.1 and an inner surface 4.2.
- the light source 2 and the light reflector 3 are aligned according to an optical axis 7 (main orientation) such that the light in a light cone 9 passes through the
- Headlight cover 4 is emitted. This results in a light propagation path 6 which, starting from the light source 2, runs frontally to the front and is limited laterally by the specifications of the light reflector. According to one variant, the
- Light propagation path 6 a cone of light.
- a radar module 11 is integrated, so that a radar and
- Light emission arrangement 10 is formed. At least one radar antenna unit 12 (transmitting and receiving unit) is provided on the top 11.1 of the radar module 11. A radar reflector 13 is arranged above the radar module 11.
- Headlight cover 4 has at least one light-transparent, frequency-selective radar transmission structure 14, in particular in the form of a coating.
- an external radar transmission structure 14.1 and / or an internal radar transmission structure 14.2 can be provided.
- an intermediate level 15 with a radiation-effective cover is provided between the radar module 11 and the radar reflector 13, an intermediate level 15 with a radiation-effective cover.
- the intermediate plane 15 or the cover coincides at least approximately with a plane 18 (tangential plane) tangent to the light reflector 3 at the bottom, and / or is oriented at least approximately parallel to it.
- the optical axis 16 of the radar module or the respective antenna unit 12 is oriented at least approximately orthogonally to the intermediate plane 15, and / or is oriented at least approximately vertically.
- a headlamp cavity 17 spanned by the headlamp cover and optionally also spanned by the light reflector serves to accommodate all radar technology components.
- the radar module 12 is arranged together with the antenna unit 13 in a partial cavity 17.1 covered by the headlamp cover and the radar reflector (in particular in the form of a gable roof) in a region at the very front of the headlamp cavity 17 adjacent to the headlamp cover 4.
- the partial cavity 17.1 is delimited at the front by the headlight cover 4, and the rear cavity (rear) is delimited by the radar reflector 11.
- an angle is formed between the headlight cover and the radar reflector, which angle is in particular in the range from 45 to 90 °, for example approximately 55 to 60 °.
- This contact angle can also be described as a roof angle between two oppositely inclined (roof) surfaces, in particular with reference to a gable roof construction.
- Further contact points with further angles can also be formed between the headlamp cover and the radar reflector, in particular, if the radar reflector is optionally three-dimensional, also at the interface to the headlamp cover.
- the beam path 19 of the propagating radar radiation or RF wave emitted by the radar module 12 initially runs transversely to the radiation direction x, in particular at least approximately orthogonally thereto and / or at least approximately in the vertical direction, and is then turned by approximately 90 ° by means of the radar reflector 13 deflected, a detection area 8 being defined by means of the radar reflector and / or by means of a respective radar transmission structure 13, 14. 2 shows that the detection area can optionally or additionally also be arranged laterally, in particular in the case of a radar reflector
- the arrow x in FIG. 1 indicates the emission direction (emission direction) or the
- the radar module and the radar reflector and optionally also the antenna unit are arranged in at least approximately the same longitudinal position x.
- the headlight cover 4 extends rearward (rearward) into a longitudinal position smaller than the longitudinal position of the radar module and the radar reflector.
- the headlight cover not only overlaps the radar module and the radar reflector, but also completely covers these two components in the direction of radiation.
- 2 shows a radar and light emission arrangement 10, which has a plurality of radar reflectors and a plurality of radar antenna units 12, 12a, namely also at least one radar antenna unit 12a for obliquely aligned ones
- a radar reflector 13a is also set up for oblique radiation and a radar reflector 13b is set up for lateral radiation
- Each radar reflector 13 can be characterized by at least one of the following components: first (in particular one-sided) frequency-selective structure 13.1
- Radar transmission structure second (in particular one-sided) frequency-selective structure 13.2, in each case in particular as a coating or integrated into the material; and / or light-transparent, electrically conductive oxide layer (TCO) 13.3, optionally on one side or on both sides.
- TCO electrically conductive oxide layer
- only a single frequency-selective structure is provided, in particular integrated into the material of the respective reflector element 13.4.
- the TCO layer 13.3 can alternatively or additionally also be formed on the headlight cover 4.
- the radar transmission structure 14 is formed by a system of at least four types of structures, in particular a first frequency-selective radar transmission structure 14a, in particular a so-called bandpass structure, and a second frequency-selective radar transmission structure 14b, in particular a so-called Fresnel area, and a third frequency-selective radar transmission structure 14c, in particular called PRS (partially reflective structure) and a fourth frequency-selective radar transmission structure 14d, in particular so-called lowpass structure.
- the respective structure can be introduced or integrated in particular by a laser process.
- One or more transparent, electrically conductive oxide layers (TCO) 14.3 can optionally be provided for a single or for each radar transmission structure, in particular for the purpose of optimizing the reflection properties.
- Light emission arrangement 10 shown which is integrated in a headlight 1.
- the radar module 11 is arranged behind a plurality of light sources 2.
- the optical axes 7 and 16 lie one above the other or are at least approximately parallel to one another.
- the Light sources 2 surround the optical axis 16 of the antenna unit 12 or are at least partially arranged around it. Between the light sources 2 and the detection area 8 is (only) the light-transparent, radar radiation shaping
- Headlight cover arranged. Arranged between the antenna unit 12 and the light sources is a radar radiation shaping device 14 with a TCO layer 14.3, which in the arrangement according to FIG. 4 does not necessarily have to be light-transparent.
- 13.2 second frequency-selective structure in particular coating or integrated 13a radar reflector or radar reflector element for oblique radiation
- frequency-selective radar transmission structure in particular in the form of a coating and / or integrated into the material
- Beam path (emitted, propagating radar radiation or RF wave) x emission direction (emission direction) or longitudinal position
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Computer Security & Cryptography (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Aerials With Secondary Devices (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018217774.0A DE102018217774A1 (de) | 2018-10-17 | 2018-10-17 | Radar- und Lichtausstrahlungsanordnung für Fahrzeuge zum Ausstrahlen von Licht und Radarstrahlung sowie Verfahren und Verwendung |
PCT/EP2019/078054 WO2020079060A1 (de) | 2018-10-17 | 2019-10-16 | Radar- und lichtausstrahlungsanordnung für fahrzeuge zum ausstrahlen von licht und radarstrahlung sowie verfahren und verwendung |
Publications (1)
Publication Number | Publication Date |
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EP3867665A1 true EP3867665A1 (de) | 2021-08-25 |
Family
ID=68461740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19797985.9A Pending EP3867665A1 (de) | 2018-10-17 | 2019-10-16 | Radar- und lichtausstrahlungsanordnung für fahrzeuge zum ausstrahlen von licht und radarstrahlung sowie verfahren und verwendung |
Country Status (8)
Country | Link |
---|---|
US (1) | US11845376B2 (de) |
EP (1) | EP3867665A1 (de) |
JP (1) | JP7449284B2 (de) |
KR (1) | KR20210072081A (de) |
CN (1) | CN113574414B (de) |
DE (1) | DE102018217774A1 (de) |
TW (1) | TW202030499A (de) |
WO (1) | WO2020079060A1 (de) |
Families Citing this family (9)
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DE102018217774A1 (de) * | 2018-10-17 | 2020-04-23 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Radar- und Lichtausstrahlungsanordnung für Fahrzeuge zum Ausstrahlen von Licht und Radarstrahlung sowie Verfahren und Verwendung |
IT201800010894A1 (it) * | 2018-12-07 | 2020-06-07 | Piaggio & C Spa | Veicolo a sella cavalcabile comprendente un sistema per la riduzione del rischio di collisione |
KR102329457B1 (ko) * | 2020-04-01 | 2021-11-23 | (주)현보 | 차량용 거리 측정장치 |
DE102020112312B3 (de) * | 2020-05-06 | 2021-10-21 | Audi Aktiengesellschaft | Scheinwerfer für ein Kraftfahrzeug |
KR20210152764A (ko) * | 2020-06-09 | 2021-12-16 | 현대모비스 주식회사 | 차량 레이더 장치 |
CN112904283B (zh) * | 2021-02-05 | 2023-11-03 | 北京小马慧行科技有限公司 | 罩体组件及具有其的车辆 |
DE102021129622A1 (de) | 2021-11-12 | 2023-05-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Multispektralemissionseinrichtung für Fahrzeuge zum Ausstrahlen von sichtbarem Licht, LiDAR- und Radarstrahlung sowie Verfahren und Verwendung |
DE102021132729A1 (de) | 2021-12-10 | 2023-06-15 | Bayerische Motoren Werke Aktiengesellschaft | Radarkompatible Außenanzeigevorrichtung für ein Fahrzeug |
CN114361763B (zh) * | 2022-01-19 | 2023-07-25 | 四川大学 | 一种集成多天线的大灯和车辆 |
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-
2018
- 2018-10-17 DE DE102018217774.0A patent/DE102018217774A1/de active Pending
-
2019
- 2019-10-16 WO PCT/EP2019/078054 patent/WO2020079060A1/de unknown
- 2019-10-16 EP EP19797985.9A patent/EP3867665A1/de active Pending
- 2019-10-16 US US17/285,951 patent/US11845376B2/en active Active
- 2019-10-16 KR KR1020217014176A patent/KR20210072081A/ko active Search and Examination
- 2019-10-16 JP JP2021521502A patent/JP7449284B2/ja active Active
- 2019-10-16 CN CN201980082923.7A patent/CN113574414B/zh active Active
- 2019-10-17 TW TW108137484A patent/TW202030499A/zh unknown
Also Published As
Publication number | Publication date |
---|---|
WO2020079060A1 (de) | 2020-04-23 |
JP2022512772A (ja) | 2022-02-07 |
US11845376B2 (en) | 2023-12-19 |
US20210387563A1 (en) | 2021-12-16 |
TW202030499A (zh) | 2020-08-16 |
KR20210072081A (ko) | 2021-06-16 |
CN113574414A (zh) | 2021-10-29 |
DE102018217774A1 (de) | 2020-04-23 |
JP7449284B2 (ja) | 2024-03-13 |
CN113574414B (zh) | 2024-08-02 |
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