EP3914857A1 - Dispositif d'éclairage pour projecteur de véhicule automobile - Google Patents

Dispositif d'éclairage pour projecteur de véhicule automobile

Info

Publication number
EP3914857A1
EP3914857A1 EP19817310.6A EP19817310A EP3914857A1 EP 3914857 A1 EP3914857 A1 EP 3914857A1 EP 19817310 A EP19817310 A EP 19817310A EP 3914857 A1 EP3914857 A1 EP 3914857A1
Authority
EP
European Patent Office
Prior art keywords
light
light source
deflection
lighting device
designed
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.)
Granted
Application number
EP19817310.6A
Other languages
German (de)
English (en)
Other versions
EP3914857B1 (fr
Inventor
Stefan MITTERLEHNER
Thomas MITTERLEHNER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZKW Group GmbH
Original Assignee
ZKW Group GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZKW Group GmbH filed Critical ZKW Group GmbH
Publication of EP3914857A1 publication Critical patent/EP3914857A1/fr
Application granted granted Critical
Publication of EP3914857B1 publication Critical patent/EP3914857B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—Laser light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/18—Combination of light sources of different types or shapes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

Definitions

  • the invention relates to a lighting device for a motor vehicle headlight, the lighting device comprising:
  • At least one first light source for emitting light rays in a first
  • a first deflection device with a deflection surface which is set up to deflect at least some of the light beams from the at least one first light source in a second radiation direction
  • a second deflection device with a plurality of deflection elements which can be controlled and moved independently of one another for deflecting at least some of the light beams of the light beams deflected by the first deflection device into a third emission direction and for generating a light distribution in front of the
  • the invention further relates to a motor vehicle headlight, comprising at least one lighting device according to the invention.
  • the light image is described on the basis of a project on a vertical surface in accordance with the relevant standards relating to automotive lighting technology, with a variably controllable reflector surface consisting of a plurality of micromirrors is formed and light beams emitting from a first illuminant into a
  • Any light functions with different light distributions can be implemented, such as a low beam light distribution, a cornering light light distribution, a city light light distribution, a motorway light light distribution, a cornering light light distribution, a high beam light distribution or the mapping of glare-free
  • the so-called "digital light processing" projection technique - DLP for short - is preferably used, in which images are generated by modulating a digital image onto a light beam.
  • the basis for this technology is preferably an optoelectronic component, which has the rectangular arrangement in the form of a matrix of micromirrors and their
  • Control technology contains, for example a "Digital Micromirror Device” - abbreviated to DMD.
  • a DMD microsystem is an area light modulator (Spatial Light Modulator, SLM) that consists of micro-mirror actuators arranged in a matrix, i.e.
  • SLM spatial Light Modulator
  • tiltable or pivotable reflecting surfaces for example with an edge length of about 7 pm.
  • the mirror surfaces are designed in such a way that they can be moved by the action of electrostatic fields.
  • Each micromirror can be individually adjusted in angle and generally has two stable end states, between which it is possible to switch up to 5000 times within a second, for example.
  • the number of micromirrors corresponds to the resolution of the projected image, whereby a micromirror can represent one or more pixels. DMD chips with high resolutions in the megapixel range are now available.
  • the light distribution generated for example for a glare-free high beam, can be dynamically controlled such that oncoming vehicles are detected and the light distribution generated, for example, by a matrix of LED light sources is darkened in the direction of the oncoming vehicle.
  • Light function is expected.
  • a fully functional high beam with a high maximum (greater than 100 lx) and a width of +/- 20 ° (measured according to an ECE measuring screen) cannot be achieved.
  • the high beam distribution that can be generated by a DMD or DLP module is relatively narrow with maximum expected widths of +/- 10 °.
  • the first deflection device comprises at least one second light source, which at least one second light source
  • Main emission direction in which light rays of the second light source can be emitted, wherein the at least one second light source is arranged on the deflecting surface of the first deflection device such that the main emission direction is parallel to the second emission direction.
  • the at least one first light source is, for example, adapted to receive a backlight or ground lights before Beleuchtimgs V orraum to realize, wherein the second light source is provided at least, to produce, for example, a high beam light distribution in front of the lighting device or to an additional light spot, to map the first deflection device.
  • the main emission direction of the at least one second light source should be as close as possible or almost parallel or completely parallel to the second emission direction, since the second deflection device - if it is designed as a DMD - has very small ones
  • Light entry angle ranges is specified, i.e. If light rays hit the DMD micromirrors too steeply or too flatly, this can lead to backlighting of the micromirrors, which in turn leads to scattered light in the projecting light image and thus to poor light-dark contrast, which is extremely important when used for a motor vehicle headlight.
  • the term “projectable in front of the lighting device” means projecting in the direction of travel of a motor vehicle in which the lighting device is installed.
  • direction of travel denotes the direction in which a driven motor vehicle moves as designed.
  • a technically possible reversing is not defined in this context as the direction of travel.
  • the “main emission direction” is to be understood as the direction in which the first or the second light source emits the most or most light due to its directivity.
  • the deflection surface of the first deflection device preferably has a recess for the at least one second light source.
  • the geometric center is also understood to mean, for example, the geometric center of gravity. This corresponds mathematically to the averaging of all points within a figure, in this case a surface. Such surfaces can, for example, also be designed as quadrics, that is to say surfaces of second order.
  • paraboloid or hyperboloid
  • axis of rotation around which a parabola (or hyperbola) is rotated to produce a paraboloid intersects the paraboloid surface is also understood as a geometric center, for example.
  • the first deflection device can, for example, be designed such that it or the deflection surface has an opening or opening through which the at least one second light source can emit light beams onto the second deflection device.
  • the first deflection device has a holder on which the deflection surface is arranged, the holder having an opening in which the at least one second light source is arranged.
  • the holder is designed as a heat sink and is designed to dissipate the heat generated at the at least one second light source.
  • the first deflection device has exactly one second light source.
  • the at least one second light source is designed as a light-emitting diode or as a laser light source with a light conversion means.
  • laser devices generally emit coherent, monochromatic light or light in a narrow wavelength range, but in the case of a motor vehicle headlight, white mixed light is generally preferred or prescribed by law for the emitted light, so-called in the direction of radiation of the laser device
  • Light conversion elements for converting essentially monochromatic Light arranged in white or polychromatic light, whereby “white light” is understood to mean light of such a spectral composition that produces the color impression “white” in humans.
  • This light conversion element is designed, for example, in the form of one or more photoluminescence converters or photoluminescence elements, with incident laser beams from the laser device striking the light conversion element, which as a rule has photoluminescent dye, and excite this photoluminescent dye for photoluminescence, and thereby light in a wavelength different from the light of the irradiating laser device .
  • the light output of the light conversion element essentially has the characteristics of a Lambertian spotlight.
  • transmissive and “transmissive” refer to the blue portion of the converted white light.
  • the laser beam is reflected or deflected at an interface attributable to the conversion element, so that the blue light component has a different direction of propagation than the laser beam, which is usually designed as a blue laser beam.
  • the at least one second light source is a
  • Front lens optics which front lens is formed as a collimator.
  • a collimator is understood to mean such a device that is set up
  • the attachment optics are thus located in the beam path of the first light source between the first light source and the first deflection device. It can be provided here that the front lens system is designed as a collimator.
  • Micromirror array is formed with a multiplicity of micromirrors which are arranged next to one another in the manner of an array and can be controlled individually or in groups.
  • Each micromirror can be individually adjusted in its angle and usually has two stable end states between which it can be tilted.
  • the second deflection device can advantageously be designed as a DMD.
  • Deflection elements can vary the shape of the radiation light distribution of the lighting device but also the light intensity distribution within the radiation light distribution.
  • the radiation distribution can thus be changed dynamically both in terms of its shape (extension and / or extension) and in terms of its brightness distribution.
  • the control of the deflection elements, and thus the variation of the light distribution can take place depending on the operating parameters of the motor vehicle (e.g. vehicle speed, loading, steering angle, lateral acceleration, etc.).
  • environmental parameters of the vehicle e.g. outside temperature, precipitation, other road users detected in the vehicle's surroundings, etc.
  • the at least one first light source is designed as at least one light-emitting diode.
  • each light emitting diode can be controlled independently of the other light emitting diodes.
  • Each light-emitting diode can thus be switched on and off independently of the other light-emitting diodes of a light source, and preferably if it is dimmable
  • Light emitting diodes are also dimmed independently of the other light emitting diodes of the light source. It can further be provided that the lighting device comprises at least two first light sources, preferably exactly two first light sources.
  • the first radiation direction is parallel to the third radiation direction.
  • the deflection surface of the first deflection device is designed as a hyperbolic or as a parabolic reflector.
  • the deflection surface can also have other shapes, for example an ellipsoid.
  • the first deflection device bundles light beams from the at least one first light source to a point which is located behind the second deflection device in the direction of the second radiation direction.
  • the object is also achieved by a motor vehicle headlight with at least one lighting device according to the invention.
  • FIG. 1 shows a perspective view of an exemplary lighting device with first light sources, a first deflection device with a second light source and a second deflection device;
  • FIG. 2 shows the exemplary lighting device from FIG. 1 in a different perspective
  • FIG. 5 shows a perspective rear view of the first deflection device.
  • 1 shows an exemplary lighting device 10 for a
  • Lighting device 10 comprises two first light sources 50, which are provided for emitting light beams in a first emission direction XI and are designed as light-emitting diodes, and a first deflection device 100 with a deflection surface 110, which deflection surface 110 is set up to at least some of the light beams of the first light sources 50 in a second radiation direction X2
  • the first deflection device 100 further comprises a holder 130, on which holder 130 the deflection surface 110 is arranged or fastened.
  • the first light sources 50 are each followed by a front lens system 51, which front lens systems 51 are designed as collimators and align the light beams emitted by the light sources 50 parallel to one another, the light beams directed in parallel onto the first deflection device 100 or onto the deflection surface 110
  • the lighting device 10 further comprises a second deflection device 200, which is designed as a digital micromirror array (DMD for short) with a multiplicity of micromirrors which can be arranged next to one another in an array-like manner and can be controlled individually or in groups, the micromirrors being controllable and movable independently of one another, and the micromirrors for deflecting at least part of the light beams of the light beams deflected by the first deflection device 100 are provided in a third radiation direction X3 and for generating a light distribution in front of the lighting device 10.
  • DMD digital micromirror array
  • Each micromirror can be individually adjusted in its angle and usually has two stable end states between which it can be tilted.
  • the first radiation direction XI can be arranged parallel to the third radiation direction X3.
  • FIG. 3 shows a more detailed sectional view of the first deflection device 100, it being possible to see that the first deflection device 100 comprises a second light source 60, which has a main emission direction A, into which light beams from the second light source 60 can be emitted, the second light source 60 in geometric center of the Deflection surface 110 is arranged.
  • the holder 130 has an opening 140, in which the second light source 60 is arranged, the deflection surface 110 being one
  • the main emission direction A of the second light source 60 is arranged parallel to the second emission direction X2 or emits the second light source 60 essentially in the same direction in which the light rays of the first light sources 50 from the first deflection device 100
  • the geometric center is also understood to mean, for example, the geometric center of gravity. This corresponds mathematically to the averaging of all points within a figure, in this case a surface. Such surfaces can, for example, also be designed as quadrics, that is to say surfaces of second order.
  • the deflection surface 110 can be designed, for example, as a parabolic or as a hyperbolic reflector or reflector surface.
  • paraboloid or hyperboloid
  • the point in the case of a paraboloid (or hyperboloid) in which the axis of rotation about which a parabola (or hyperbola) is rotated to produce a paraboloid (or hyperboloid) intersects the paraboloid surface (hyperboloid surface) can also be understood as a geometric center .
  • the deflecting surface 110 or the first deflecting device 100 can also be designed such that the light beams of the first light sources are essentially focused on a point which point is located behind the second deflecting device 200 in the direction of the second emission direction X2.
  • This point can also be understood to mean a region with a spatial extension, which generally means that the parallel light beams from one of the first light sources 50 are the parallel light beams from the other first
  • the second light source 60 is designed as a laser light source with a light conversion element, the second light source 60 being followed by an auxiliary lens 61 in the main emission direction A, which is designed as a collimator.
  • FIG. 4 shows a perspective front view of the first deflection device 100, the deflection surface 110 and the one provided on the deflection surface 110 once again
  • Recess 120 can be seen.
  • FIG 5 shows a perspective rear view of the first deflection device 100, the holder 130 being more clearly visible, the holder 130 being designed as a heat sink, which heat sink is designed to dissipate the heat generated at the second light source 60, preferably to the environment.
  • Front optics first light source ... 51

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

L'invention concerne un dispositif d'éclairage (10) pour un projecteur de véhicule automobile, ledit dispositif d'éclairage (1) comprenant: - au moins une source lumineuse (50) destinée à émettre des rayons lumineux dans une première direction de rayonnement (X1), - un premier moyen de renvoi (100) comportant une surface de renvoi (110) conçue pour renvoyer au moins une partie des rayons lumineux de l'au moins une première source lumineuse (50) dans une deuxième direction de rayonnement (X2), - un second moyen de renvoi (200) comportant une pluralité d'éléments de renvoi pouvant être commandés et déplacés indépendamment l'un de l'autre, lesdits éléments de renvoi étant destinés à renvoyer, dans une troisième direction de rayonnement (X3), au moins une partie des rayons lumineux des rayons lumineux renvoyés par le premier moyen de renvoi (100), et à générer une distribution lumineuse devant le dispositif d'éclairage (10), le premier moyen de renvoi (100) comprenant au moins une seconde source lumineuse (60) présentant une direction principale de rayonnement dans laquelle des rayons lumineux de la seconde source lumineuse peuvent être émis, l'au moins une seconde source lumineuse (60) étant disposée sur la surface de renvoi (110) du premier moyen de renvoi (100) de sorte que la direction principale de rayonnement est parallèle à la deuxième direction de rayonnement (X2).
EP19817310.6A 2019-01-23 2019-12-12 Dispositif d'éclairage pour un phare de véhicule automobile Active EP3914857B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19153239.9A EP3686483A1 (fr) 2019-01-23 2019-01-23 Dispositif d'éclairage pour un phare de véhicule automobile
PCT/EP2019/084809 WO2020151873A1 (fr) 2019-01-23 2019-12-12 Dispositif d'éclairage pour projecteur de véhicule automobile

Publications (2)

Publication Number Publication Date
EP3914857A1 true EP3914857A1 (fr) 2021-12-01
EP3914857B1 EP3914857B1 (fr) 2024-02-07

Family

ID=65200722

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19153239.9A Withdrawn EP3686483A1 (fr) 2019-01-23 2019-01-23 Dispositif d'éclairage pour un phare de véhicule automobile
EP19817310.6A Active EP3914857B1 (fr) 2019-01-23 2019-12-12 Dispositif d'éclairage pour un phare de véhicule automobile

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19153239.9A Withdrawn EP3686483A1 (fr) 2019-01-23 2019-01-23 Dispositif d'éclairage pour un phare de véhicule automobile

Country Status (6)

Country Link
US (1) US11592153B2 (fr)
EP (2) EP3686483A1 (fr)
JP (1) JP7198934B2 (fr)
KR (1) KR102598839B1 (fr)
CN (1) CN113348324B (fr)
WO (1) WO2020151873A1 (fr)

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JP7198934B2 (ja) 2023-01-04
EP3914857B1 (fr) 2024-02-07
US11592153B2 (en) 2023-02-28
JP2022518503A (ja) 2022-03-15
US20220065420A1 (en) 2022-03-03
CN113348324A (zh) 2021-09-03
EP3686483A1 (fr) 2020-07-29
CN113348324B (zh) 2024-02-13
KR20210110863A (ko) 2021-09-09
WO2020151873A1 (fr) 2020-07-30
KR102598839B1 (ko) 2023-11-07

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