EP3990827A1 - Module lumineux avec imageur a fixation amortissante et chauffante - Google Patents
Module lumineux avec imageur a fixation amortissante et chauffanteInfo
- Publication number
- EP3990827A1 EP3990827A1 EP20734544.8A EP20734544A EP3990827A1 EP 3990827 A1 EP3990827 A1 EP 3990827A1 EP 20734544 A EP20734544 A EP 20734544A EP 3990827 A1 EP3990827 A1 EP 3990827A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- imager
- strip
- light module
- flexible material
- electrically heating
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
-
- 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
- F21S41/64—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 changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
- F21S41/645—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 changing their light transmissivity, e.g. by liquid crystal or electrochromic devices by electro-optic means, e.g. liquid crystal or electrochromic devices
-
- 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
- F21S45/60—Heating of lighting devices, e.g. for demisting
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
Definitions
- TITLE LUMINOUS MODULE WITH DAMPER AND HEATING FIXING IMAGER
- the invention relates to the field of light signaling and lighting, in particular for motor vehicles.
- This type of module comprises, in a known manner, an imager with a rear face and a front face, and a backlighting device arranged vis-à-vis the rear face of the imager.
- the imager is thus backlit and emits from its front face a light beam modulated by the imager, this beam illuminating the glass of the fire, forming the light image in question.
- the imager can be a liquid crystal display.
- Liquid crystal displays use the polarization of light by polarizing filters and the birefringence of certain liquid crystals in the nematic phase, the orientation of which can be varied depending on the electric field. From an optical point of view, the liquid crystal display is a passive device: it does not emit light, only its transparency varies, and therefore it must have lighting. Due to the viscous nature of liquid crystals, a liquid crystal display is likely to exhibit too long a response time, or even no response, at low temperatures. More specifically, a liquid crystal display has too long a response time at temperatures below or equal to -20 ° C and no response from -40 ° C.
- Published patent document CN 101510020 A discloses a heater for a liquid crystal display.
- This device comprises a glass substrate with two conductive side bands intended to be supplied electrically.
- An electrically conductive and transparent coating based on indium tin oxide (or indium oxide doped with tin or ITO for the English name: Indium tin oxide), is deposited on the substrate and is partially removed in a non-homogeneous manner transversely between the lateral power supply bands, so as to produce heat by the Joule effect, and this more near the two side edges than in the central part.
- This device thus makes it possible to compensate for the edge effects and thus ensure a homogeneous temperature of the liquid crystal screen.
- This device is interesting for the performance and finesse of heating. However, it has a cost disadvantage as well as a light loss insofar as all of the backlight light from the screen must pass through the heater.
- the electrically conductive and transparent layer in fact has a non-zero absorption rate.
- the object of the invention is to overcome at least one of the drawbacks of the aforementioned prior art. More particularly, the aim of the invention is to ensure proper operation of an imager in a light module, even at low temperature, in particular below -10 ° C.
- the subject of the invention is a light module, in particular for a motor vehicle, comprising an imager with a front face, a rear face and an edge
- the light module further comprises at least one strip of flexible material and electrically heating in contact with the peripheral edge of the imager and the reception area of said imager on the support.
- the imager is an electric imager configured to produce an image by transmitting light.
- the imager is advantageously a liquid crystal display.
- the flexible and electrically heating material is capable of being elastically deformed.
- the flexible and electrically heating material is able to absorb or dampen vibrations, in particular the vibrations present during the use of the device.
- a strip made of this material helps dampen vibrations that may be transmitted by the environment to the imager.
- Such a strip also makes it possible to limit the forces applied to the surfaces of the imager. Too great a force could damage or even break this imager.
- Such a strip also makes it possible to absorb the manufacturing tolerances of the various elements, and to dispense with the assembly clearances that would be necessary in its absence.
- An assembly with play is likely to generate parasitic noises during the use of the device, in particular because of the vibrations, and could also possibly cause the breakage of the imager.
- the flexible and electrically heating material has a hardness of less than 80 ° Shore A. More
- the flexible and electrically heating material has a hardness of less than 60 ° Shore A.
- At least one strip of flexible material and electrically heating has an average thickness greater than 0.1 mm and / or less than 3mm.
- the flexible and electrically heating material is honeycombed.
- At least one strip of flexible material and electrically heating comprises metal wires and / or conductive particles.
- the contact of at least one strip of flexible material and electrically heating with the peripheral edge of the imager is on at least one, preferably each, of the front and rear faces of said imager.
- at least one strip of flexible material and electrically heating is configured to be able to maintain the imager at an average temperature above -10 ° C when said module is subjected to ambient conditions with a temperature ranging from -10 ° C to -40 ° C.
- At least one strip of flexible and electrically heating material is configured to be able to increase an average temperature of the imager by at least 10 ° C in one minute, when said module is subjected to ambient conditions with a temperature ranging from -10 ° C to - 40 ° C.
- said module further comprises an electrical supply unit for at least one strip of flexible material and electrically heated, said unit being configured to maintain a
- the subject of the invention is also a method for controlling the temperature of an imager of a light module, remarkable in that said light module is according to the invention, and in that at least one strip of flexible material and heater is electrically powered to heat the imager provided the ambient temperature is below -10 ° C.
- the measures of the invention are advantageous in that they make it possible to ensure functionality of the imager under cold ambient conditions in a simple and economical manner, without any optical disturbance.
- the fact of heating the imager along its peripheral edge is not only interesting from an optical point of view and size but also from a thermal point of view, because it is indeed at the edges that the imager tends to cool down and show too long a response time.
- Combining the electric heating function with the damping function also has advantages of compactness, cost and ease of assembly.
- FIG 1 is a schematic sectional view of a light module according to the invention, housed in a light device for a motor vehicle.
- FIG 2 is a schematic front view of the module of Figure 2.
- FIG 3 is a sectional view III-III of Figure 2.
- FIG 4 is a sectional view IV-IV of Figure 2.
- Figure 1 is a sectional diagram of a lighting device enclosing a light module according to the invention.
- the lighting device 2 essentially comprises an envelope 4 and at least one light module 6 disposed inside the envelope 4.
- the latter essentially comprises a housing 4.1 forming an open cavity, and a glass 4.2 fixed to the housing 4.1 and closing the casing. Opening in question. Ice 4.2 is transparent or translucent.
- the light module 6 essentially comprises an electronic imager 8, preferably of the liquid crystal type, and a backlighting device 10.
- Such an imager forms a generally flat screen with a front face 8.1, a rear face 8.2 and a peripheral edge 8.3. It consists of two glass plates between which are housed liquid crystals. At each of the interfaces with liquid crystals, a grooved polymer layer anchors the molecules at rest. The two internal faces of the glass plates have a matrix of transparent electrodes for black and white. For color applications, there are three cells per pixel and a colored filter of red, green, and blue patterns.
- the filter is a succession of vertical bands alternating the three colors.
- the basic principle is that the application of a greater or lesser potential difference between the two electrodes of a pixel causes a change in the orientation of the molecules, a variation of the plane of polarization, and therefore a variation of the transparency of the whole device.
- Such a screen is passive in that it does not emit light; it requires lighting, in this case a backlight in order to be crossed by light.
- the backlighting device 10 is arranged opposite the rear face 8.2 of the imager 8, so that the light emitted by said device is passed through and transmitted by the imager and is then projected onto the inside face of the lens 4.2 in order to form a signal light beam displaying on the lens 4.2 a potentially changing image, which may form a pictogram.
- the imager can be controlled electronically to form these pictograms.
- These pictograms can be configured or selected to display information useful for safety, such as the presence of a danger in front of the vehicle, opening of the vehicle door when stationary, parking status of the vehicle, etc. This principle of displaying luminous information is known per se to those skilled in the art.
- the backlighting device 10 essentially comprises a plate 10.1 and light sources 10.2 arranged and distributed on the plate 10.1.
- the plate 10.1 is advantageously a printed circuit board, made of epoxy resin reinforced with glass fibers, such as in particular FR-4 (abbreviation of the English “Flame Resistant 4”).
- the light sources are advantageously of the semiconductor type, preferentially light-emitting diodes.
- the light module 4 also comprises a support 12 on which the device is fixed.
- the support comprises, between the backlighting device 10 and the imager of the walls forming a housing 12.1 configured to channel light towards the imager 8.
- the walls of the housing 12.1 may have diffusing white surfaces.
- the support 12 also comprises means for positioning and fixing 12.2 of the plate 10.1 of the backlighting device 10.
- These means may comprise tabs 12.2 extending in the extension of the walls of the housing 12.1 and passing through holes of suitable shapes. practiced in the plate 10.1 of the backlighting device.
- a shoulder at the base of each tongue may be provided to form a bearing surface for the plate 10.1.
- These tabs may have a hooking surface with an edge of the orifices in the plate 10.1, in particular of the clipping type.
- the support 12 also comprises reception areas 12.3 and 12.4 of the peripheral edge 8.3 of the imager 8. These reception areas 12.3 and 12.4 in this case form a shoulder 12.3 capable of receiving the rear face 8.2 of the adjacent imager. at the peripheral edge 8.3.
- One or more retainers 12.4 are attached to the shoulders 12.3 so as to extend opposite the front face 8.1 of the imager, along the peripheral edge 8.3.
- strips of flexible material 14 and 16 are arranged on the rear 8.2 and front faces 8.1, respectively, of the imager, between these said faces and the corresponding surfaces of the shoulders 12.3 and the corresponding surfaces of the retaining piece (s) 12.4.
- the function of these bands of flexible material 14 and 16 is to ensure damping of the vibrations likely to be transmitted by the environment to the imager 8.
- the latter is in fact essentially constituted by two superimposed glass plates, these plates forming the front 8.1 and rear 8.2. Too much tightening of the imager at its edge
- the flexible material of at least one of the bands 14 and 16 is also electrically heated and connected to an electrical supply, in order to ensure heating of the imager. 8 in cold conditions otherwise likely to increase the response time of the imager 8.
- the strip of flexible material 16 is electrically heated and connected to a power supply, the other 14 is not. not. It is understood that various variations are possible; it is in particular possible to provide strips of flexible and heating material on the two faces 8.1 and 8.2 of the imager 8, or only on the rear face 8.2.
- the flexible material is advantageously a cellular material of the foam type, in particular polyurethane. Alternatively it can be made of solid material.
- the flexible material is advantageously of the polymer type. It advantageously has a reduced hardness of less than 80 ° Shore A, more advantageously less than 60 °
- the strip (s) of flexible material 14 and 16 may have a thickness greater than 0.1 mm and / or less than 3mm, preferably greater than 0.2mm and / or less than 2mm, more preferably still greater than 0.3mm and / or less than 1 mm.
- the strip or bands of flexible material 14 and 16 can have a width greater than 2mm and / or less than 5mm.
- the flexible and electrically heating material further comprises
- electrical conductors to form an electrical resistance along the strip of said material.
- These electrical conductors can be metal wires, for example copper, embedded in the matrix formed by the flexible material, and / or conductive particles distributed in the matrix.
- the flexible and electrically heating material then has a resistivity (corresponding to the resistance of a section of material one meter in length and one square meter in section and is expressed in ohm-meters) of between 0.004 and 0.024 Qm. For a strip with a section of 4mm 2 and a length of 50mm, this gives a resistance between 50 and 300 W.
- P the electrical and thermal power
- R the resistance of the strip of flexible material and electrically heating
- / the current flowing through said strip.
- FIG. 2 is a front view of module 6 of FIG. 1.
- a power supply unit 18 of the flexible and electrically heating material strip 16 is electrically connected to said strip.
- the strip of flexible and electrically heating material 16 extends continuously over almost all (except for the area of the lower left corner in FIG. 2) of the peripheral edge 8.3 of the imager. , so as to form a single heating resistance along the four sides of the imager 8. Echoing what has been mentioned previously, it is understood that it is possible to envisage providing several strips of flexible material and electrically heating 16, and this on the same face of the imager. In this case, it is then necessary to provide several electrical connections with the power supply unit 18.
- FIGS 3 and 4 which are sectional views III-III and IV-IV in Figure 2, illustrate an example of electrical connection of the strip of flexible material and electrically heated 16.
- the retaining part 12.4 made of electrically insulating plastic material, comprises an electrode 12.4.1 overmolded by the plastic material.
- This electrode forms the outer surface of the retaining piece 12.4 facing the strip of flexible and electrically heating material 16, and extending transversely away from the imager so as to form, by way of example , a plug or an electrical contact terminal.
- the contact zone of the electrode 12.4.1 in vis-à-vis the strip of flexible and electrically heating material 16 will approach said strip until it contacts it.
- the strip of flexible and electrically heating material 16 comprises electrical conductors 16.1 embedded in a mass of flexible electrically insulating material 16.2, as illustrated in FIG. 3, it is then advisable to provide a length of said conductors exceeding by the end of the flexible electrically insulating material 16.2, in order to fold them back by 180 ° against the face of the strip of flexible and electrically heating material 16, opposite the imager.
- Figure 4 illustrates this situation where one can observe the electrical conductors 16.1, namely the metal wires, bent at 180 ° upwards so as to extend over the face of the strip of flexible and electrically heating material 16 which faces it. - with respect to the retaining part 12.4, more particularly the contact zone of the electrode 12.4.1 of said part.
- the strip (s) of flexible and electrically heating material 16 and the power supply unit are advantageously sized to be able to increase the average temperature of the imager by at least 10 ° C. in less than 60 seconds.
- the power supply unit 18 can be configured to supply the strip (s) of flexible material and electrically heating, the latter ensuring the regulation of the current according to the temperature of the imager.
- the power supply unit can be powered and / or binary controlled (on / off) depending on the ambient temperature. For example, it can be powered or controlled to operate as soon as the ambient temperature is below - 10 ° C.
- an electrical supply unit 18 with a regulation function.
- a temperature sensor of the thermistor type can be placed in contact with the imager 8 and be connected independently to the electric power supply unit 18. The latter can then modulate the supply voltage and hence , the current, depending on the
- the effective temperature of the imager 8 In general, regardless of the level of refinement and complexity of the power supply 18, the latter will advantageously not be supplied or at least controlled to operate. only when the module is active, that is, when the backlight device and the imager are electrically powered.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Surface Heating Bodies (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1907173A FR3097939B1 (fr) | 2019-06-28 | 2019-06-28 | Module lumineux avec imageur a fixation amortissante et chauffante |
| PCT/EP2020/067960 WO2020260542A1 (fr) | 2019-06-28 | 2020-06-25 | Module lumineux avec imageur a fixation amortissante et chauffante |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3990827A1 true EP3990827A1 (fr) | 2022-05-04 |
Family
ID=67515007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20734544.8A Pending EP3990827A1 (fr) | 2019-06-28 | 2020-06-25 | Module lumineux avec imageur a fixation amortissante et chauffante |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3990827A1 (fr) |
| CN (1) | CN114080525B (fr) |
| FR (1) | FR3097939B1 (fr) |
| WO (1) | WO2020260542A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021129672A1 (de) * | 2021-11-15 | 2023-05-17 | HELLA GmbH & Co. KGaA | Beleuchtungsvorrichtung für ein Kraftfahrzeug |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH671293A5 (en) * | 1986-09-22 | 1989-08-15 | Walter Hesener | Holding frame for photographs or transparencies - can be coupled to other holders for commercial display |
| US5412492A (en) * | 1991-11-05 | 1995-05-02 | Magnascreen Corporation | Electro-optical lens assembly |
| US20060250809A1 (en) * | 2001-05-25 | 2006-11-09 | Michael Strazzanti | Vehicle lamp apparatus |
| WO2009125855A1 (fr) * | 2008-04-11 | 2009-10-15 | 富士フイルム株式会社 | Corps chauffant |
| CN101510020B (zh) | 2009-03-24 | 2010-09-15 | 天马微电子股份有限公司 | Ito加热器及液晶显示器的加热方法 |
| CN201594162U (zh) * | 2009-12-25 | 2010-09-29 | 江西联创电子有限公司 | 可超低温工作的手机屏 |
| US9028123B2 (en) * | 2010-04-16 | 2015-05-12 | Flex Lighting Ii, Llc | Display illumination device with a film-based lightguide having stacked incident surfaces |
| CN102566113A (zh) * | 2011-12-14 | 2012-07-11 | 中国电子科技集团公司第五十五研究所 | 具有低温加热补偿和温度均匀性补偿功能的液晶显示器 |
| US9890916B2 (en) * | 2012-06-08 | 2018-02-13 | Lg Innotek Co., Ltd. | Lamp unit and vehicle using the same |
| CN204403996U (zh) * | 2014-12-19 | 2015-06-17 | 堤维西交通工业股份有限公司 | 具有微结构光学片的车用led讯号灯具 |
| FR3034171B1 (fr) * | 2015-03-23 | 2021-03-19 | Valeo Vision | Support de led avec surface de reception et connexion electrique par pontage |
| DE102015110241A1 (de) * | 2015-06-25 | 2016-12-29 | Osram Oled Gmbh | Verfahren zur Steuerung eines organischen Licht emittierenden Bauelements, Licht emittierende Vorrichtung mit einem organischen Licht emittierenden Bauelement und Scheinwerfer mit einer Licht emittierenden Vorrichtung |
| FR3053439B1 (fr) * | 2016-07-01 | 2018-08-10 | Valeo Vision | Dispositif lumineux apte a generer une source a pixels fins |
| CN108980776A (zh) * | 2018-07-11 | 2018-12-11 | 常州星宇车灯股份有限公司 | 一种新型led车用光源 |
-
2019
- 2019-06-28 FR FR1907173A patent/FR3097939B1/fr active Active
-
2020
- 2020-06-25 CN CN202080046329.5A patent/CN114080525B/zh active Active
- 2020-06-25 EP EP20734544.8A patent/EP3990827A1/fr active Pending
- 2020-06-25 WO PCT/EP2020/067960 patent/WO2020260542A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN114080525A (zh) | 2022-02-22 |
| CN114080525B (zh) | 2025-10-14 |
| WO2020260542A1 (fr) | 2020-12-30 |
| FR3097939A1 (fr) | 2021-01-01 |
| FR3097939B1 (fr) | 2021-07-09 |
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