WO2022218764A1 - Dispositif lumineux pour vehicule comprenant un ecran ayant une partie occultante et une partie transparente - Google Patents
Dispositif lumineux pour vehicule comprenant un ecran ayant une partie occultante et une partie transparente Download PDFInfo
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- WO2022218764A1 WO2022218764A1 PCT/EP2022/059022 EP2022059022W WO2022218764A1 WO 2022218764 A1 WO2022218764 A1 WO 2022218764A1 EP 2022059022 W EP2022059022 W EP 2022059022W WO 2022218764 A1 WO2022218764 A1 WO 2022218764A1
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- screen
- light
- luminous device
- luminous
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Images
Classifications
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- 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
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- 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
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
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- 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
- F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/0025—Opaque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
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- 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
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/40—Exterior vehicle lighting devices for illuminating purposes the light being emitted to facilitate access to the vehicle
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- 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
- F21W2104/00—Exterior vehicle lighting devices for decorative purposes
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- 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
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
Definitions
- the present invention relates to a light device for a vehicle configured to perform at least one light function. It finds a particular but non-limiting application in intelligent electric motor vehicles.
- Smart electric vehicles require less space in the front for air intakes, but on the other hand, enhanced light functions are needed to perform semi-autonomous or autonomous driving. Therefore, there is a growing interest in integrating “light” in large areas front, rear or on the sides of the vehicle to achieve improved signaling and/or communication as well as to meet new extended vehicle light functions. In particular, it is required to have an individually controllable signature line to perform a regulatory lighting function and/or a reinforced lighting function, and/or a styling function.
- black panels opaque black front or rear panels
- the interior elements of the lighting device cannot be distinguished, and that in switched-on mode, there is a better contrast for said lighting function, in particular if the latter relates to a reinforced lighting function for communication with pedestrians, or a function of style such as a given light signature or a welcome scenario.
- An example known to those skilled in the art of a lighting device for a vehicle configured to perform at least one lighting function comprises: - at least one optical module comprising at least one light source, and - a mask surrounding said optical module, and - a tinted screen arranged opposite said optical module, said screen being configured to transmit a light beam coming from light rays from said at least one light source of said light module towards the outside of said vehicle and to block the ambient light coming from the exterior of the vehicle so that it does not illuminate the interior elements of the lighting device.
- a lighting device for a vehicle configured to perform at least one lighting function, comprises: - at least one optical module comprising at least one light source, and - a mask surrounding said optical module, and - a tinted screen arranged opposite said optical module, said screen being configured to transmit a light beam coming from light rays from said at least one light source of said light module towards the outside of said vehicle and to block the ambient light coming from the exterior of the vehicle so that it does not illuminate the interior elements of the lighting device.
- said at least one light source is activated or the different light sources are activated selectively or at the same time.
- a disadvantage of this state of the art is that such a light device degrades the light function or the light functions performed by the light device. Indeed, the tinted screen in on mode only transmits the light beam outwards between 10% and 70%.
- the present invention aims to propose a luminous device which makes it possible to solve the drawback mentioned.
- the invention proposes a light device for a vehicle, said light device being configured to perform at least one light function and comprising at least one optical module and a screen arranged facing said optical module, characterized in that said screen comprises at least two elements which are arranged between them to form an upper part and a lower part of said screen, said upper part being configured to block ambient light coming from outside said vehicle, and said lower part being configured to transmit said ambient light .
- Ambient light is transmitted from the exterior to the interior of the lighting device.
- said light device may also comprise one or more additional characteristics taken alone or according to any technically possible combination, among the following.
- said optical module is configured to generate a light beam, and said upper part is configured to obscure said light beam, and said lower part is configured to transmit said light beam. Said light beam is transmitted from the inside to the outside of the light device.
- the concealment by said upper part is partial or total.
- said screen comprises a primary element made of crystal plastic material.
- said screen comprises a secondary element made of smoked or opaque plastic material.
- said primary element and said secondary element are adjacent on one of their ends.
- said primary element and said secondary element are adjacent along their lengths.
- said secondary element has a length less than that of said primary element.
- said primary element and said secondary element are substantially of equal length, and are of variable thicknesses, the thickness of said primary element varying inversely to the thickness of said secondary element so that said screen has variable transmission for said ambient light.
- said screen comprises a secondary element which forms a film with variable transmission for said ambient light, said film being placed on said primary part.
- said film is placed on the outside of said light device or on the inside of said light device.
- said screen further comprises a tertiary element made of opaque or dark smoked material, said primary element and said tertiary element being adjacent to each other on one of their ends and adjacent to said secondary element along their lengths .
- said optical module is arranged facing said screen so that said light beam mainly passes through said lower part of said screen.
- said light device further comprises a mask surrounding said optical module.
- said light function is a lighting function or a signaling function or a style light function or a reinforced light function.
- FIG. 1 is a schematic view of a light device for a vehicle, said light device comprising an optical module, a mask, and a screen, according to a non-limiting embodiment of the invention
- FIG. 1 is a schematic profile view of the screen of said luminous device of the , according to a first non-limiting embodiment
- FIG. 1 is a schematic profile view of the screen of said luminous device of the , according to a second non-limiting embodiment
- FIG. 1 is a schematic profile view of the screen of said luminous device of the , according to a third non-limiting embodiment
- FIG. 1 is a schematic profile view of the screen of said luminous device of the , according to a first non-limiting variant embodiment of a fourth non-limiting embodiment,
- FIG. 1 is a schematic profile view of the screen of said luminous device of the , according to a second non-limiting embodiment variant of a fourth non-limiting embodiment,
- FIG. 1 is a schematic view of the screen of said light device according to any one of Figures 1 to 7, observed by an observer outside the vehicle, from two different viewing angles, according to one non-limiting embodiment,
- FIGS. 1 to 7 is a diagram of contrast sensitivity curves of an eye of an observer who observes said light device according to one of FIGS. 1 to 7 from outside the vehicle.
- the vehicle 2 is a motor vehicle.
- Motor vehicle means any type of motorized vehicle. This embodiment is taken as a non-limiting example in the remainder of the description. In the remainder of the description, the vehicle 2 is thus otherwise called a motor vehicle 2.
- the vehicle 2 is a semi-autonomous or autonomous electric vehicle.
- the light device 1 is configured to perform at least one light function F.
- the light function F is regulatory or not.
- said at least one light function F is a regulatory function (such as a lighting function or a signaling function), or a style light function, or a reinforced light function (for communication with pedestrians, for example).
- the lighting function is a high beam called "high beam” in English or a dipped beam (or code) called "low beam” in English.
- the signaling function is an English “Daytime Running Light” DRL daytime running light, an English “Parking Lamp” PL parking light, an English “Tail” T position light, a TI “ Turn Indicator” in English, SM “Side Marker” in English, STP “Stop Lamp” in English, R “Reverse” in English, FG “Fog” Lamp” in English, a third brake light CHMSL "Center High-Mount Stop Light” in English.
- the style light function is a light signature, a welcome scenario, a decorative light function, a light display function on the sides.
- the reinforced light function is a pictogram display function.
- the light device 1 is configured to perform a plurality of light functions F. The light device 1 can be integrated into the front, rear or sides of the motor vehicle 2.
- the luminous device 1 for vehicle 2 comprises: - an optical module 10 with at least one light source 100, and - a screen 12.
- the light device 1 further comprises a mask 11.
- the mask 11 surrounds the optical module 10. On the it is illustrated in dotted lines because it extends along an axis Ay perpendicular to the vehicle axis Ax.
- the mask 11 which surrounds the optical module 10 is a decorative mask. It is otherwise called bezel.
- said optical module 10 comprises a plurality of light sources 100.
- This non-limiting embodiment is taken as a non-limiting example in the remainder of the description. On the , only two light sources 100 have been shown.
- the optical module 10 generates thanks to the light sources 100 a light beam Fx which is transmitted in the direction of the screen 12 towards the exterior of the motor vehicle 2.
- a light source 11 emits light. It is thus configured to emit light rays R1 (illustrated on the ) to form said light beam Fx.
- the latter can be activated selectively or at the same time. Thus, they can be switched on independently of each other. This makes it possible to reinforce the perception of the desired light function F.
- the light rays R1 are mainly transmitted respectively in the direction of the vehicle axis Ax or in the opposite direction to the vehicle axis Ax.
- the light rays R1 are mainly transmitted in a direction perpendicular to the vehicle axis Ax, in the direction of the axis Ay or in the opposite direction to the Ay axis.
- the light sources 100 are semiconductor light sources.
- a semiconductor light source is part of a light emitting diode.
- light-emitting diode we mean any type of light-emitting diode, whether in non-limiting examples LED ("Light Emitting Diode” in English), OLED ("Organic LED” in English), AMOLED ("Active-Matrix -Organic LED” in English), FOLED (“Flexible OLED” in English), RGB diodes, or multi-chip diodes.
- the screen 12 comprises at least two elements 120, 121 which are structural elements. Said at least two elements 120, 121 are arranged between them to form an upper part 12a and a lower part 12b of said screen 12.
- the screen 12 comprises two elements 120, 121. In another mode non-limiting embodiment, it comprises more than two elements 120, 121.
- the upper part 12a locally obscures the ambient light Lx coming from the outside, whether completely or partially, or in a variable manner, namely it does not transmit light at all or only partially. ambient Lx towards the inside of the light device 1, or gradually.
- the lower part 12b it is transparent to said ambient light Lx, namely it transmits almost completely or in a variable manner the ambient light Lx towards the interior of the lighting device 1.
- the upper part 12a obscures the light beam Fx generated by the light sources 100, whether completely, partially, or in a variable manner, namely it does not transmit at all or only partially the light beam Fx towards the exterior of light device 1, or gradually.
- the lower part 12b it is transparent to said light beam Fx, namely it transmits almost completely or in a variable manner the light beam Fx towards the outside of the light device 1.
- the screen 12 is described according to different non-limiting embodiments below.
- the screen 12 comprises two elements 120, 121 including a primary element 120 made of a crystal plastic material and a secondary element 121 in a dark or opaque smoked plastic material.
- the primary element 120 and the secondary element 121 are adjacent along their lengths L0, L1 and the secondary element 121 has a length L1 less than that L0 of the primary element 120.
- its length L1 is substantially equal to half the length L0.
- the length L0 represents the height of the screen 12.
- the upper part 12a of the screen 12 is thus formed by one part (the so-called upper part) of the primary element 120 and by the secondary element 121; while the lower part 12b of the screen is formed only by the other part (the so-called lower part) of the primary element 120.
- the primary element 120 being made of crystal, it transmits the ambient light Lx to the beyond 90% towards the inside of the light device 1 in a non-limiting embodiment.
- the secondary element 121 being opaque or dark smoked, it does not allow the light beam Fx to pass at all (when it is opaque) or only partially (when it is dark smoked), namely below 60% in a non-limiting embodiment, for example 10% in a non-limiting example.
- the upper part 12a will completely or partially obscure the ambient light Lx coming from outside the motor vehicle 2.
- the upper part 12a is thus occulting the ambient light Lx .
- the lower part 12b will allow the ambient light Lx to pass and thus transmit it towards the interior of the luminous device 1.
- the lower part 12b is thus transparent to the ambient light Lx.
- the upper part 12a will completely or partially obscure the light beam Fx generated by the light sources 100 of the optical module 10. The latter will be stopped by the screen 12 at its upper part 12a.
- the upper part 12a is thus occulting the light beam Fx; while the lower part 12b will allow the light beam Fx to pass to the outside of the light device 1.
- the latter will pass through the screen 12 at its lower part 12b.
- the lower part 12b is thus transparent to the light beam Fx.
- the screen 12 comprises two elements 120, 121 including a primary element 120 made of a crystal plastic material and a secondary element 121 in a dark or opaque smoked plastic material.
- the primary element 120 and the secondary element 121 are adjacent on one of their ends 120a, 121a.
- the primary element 120 and the secondary element 121 have substantially equal lengths L0, L1.
- the sum of the lengths L0, L1 represents the height of the screen 12.
- the upper part 12a of the screen 12 is thus formed by the secondary element 121 alone, and the lower part 12b of the screen 12 is formed by the primary element 120 alone.
- the primary element 120 being made of crystal, it transmits the ambient light Lx beyond 90% towards the inside of the light device 1 in one non-limiting embodiment.
- the secondary element 121 being opaque or dark smoked, it does not allow the light beam Fx to pass at all (when it is opaque) or only partially (when it is dark smoked), namely below 60% in a non-limiting embodiment, for example 10% in a non-limiting example.
- the upper part 12a will completely or partially obscure the ambient light Lx coming from outside the motor vehicle 2.
- the upper part 12a is thus occulting the ambient light Lx .
- the lower part 12b will let the ambient light Lx pass and thus transmit it to the interior of the motor vehicle 2.
- the lower part 12b is thus transparent to the ambient light Lx.
- the upper part 12a will completely or partially obscure the light beam Fx generated by the light sources 100 of the optical module 10. The latter will be stopped by the screen 12 at its upper part 12a.
- the upper part 12a is thus occulting the light beam Fx; while the lower part 12b will allow the light beam Fx to pass to the outside of the light device 1.
- the latter will pass through the screen 12 at its lower part 12b.
- the lower part 12b is thus transparent to the light beam Fx.
- the material of the screen 12 is PMMA (Polymethyl methacrylate) or PC (Polycarbonate), whether for the element primary 120 or the secondary element 121.
- the screen 12 is made by bi-injection.
- the screen 12 comprises two elements 120, 121 including a primary element 120 made of a crystal plastic material and a secondary element in a smoked plastic material. As shown, primary element 120 and secondary element 121 are adjacent along their lengths L0, L1. In addition, the primary element 120 and the secondary element 121 have substantially equal lengths L0, L1. The lengths L0, L1 represent the height of the screen 12.
- the upper part 12a of the screen 12 is thus formed by one part (the so-called upper part) of the primary element 120 and by one part (the so-called upper part) of the secondary element 121, while the lower part 12b of the screen 12 is thus formed by the other part (the so-called lower part) of the primary element 120 and by the other part (the so-called lower part) of the secondary element 121.
- the primary element 120 and the secondary element 121 have respective thicknesses e0, e1 which vary and the thickness e0 of the primary element 120 varies inversely to the thickness e1 of the secondary element 121 of so that the screen 12 has variable transmission for said ambient light Lx and for said light beam Fx.
- the thickness e0 and the thickness e1 form a constant total thickness e12 which is thus the thickness of the screen 12.
- the two thicknesses e0, e1 are substantially equal.
- the thickness e1 is mainly greater than the thickness e0, while at the level of the lower part 12b, it is the thickness e0 which is mainly greater than the thickness e1.
- the screen 12 will conceal and transmit in a variable way the ambient light Lx coming from the exterior of the motor vehicle 2.
- This is thus referred to as a screen 12 with variable transmission.
- the transmission varies from 90% to 10%.
- the upper part 12a obscures the ambient light Lx progressively
- the lower part 12b transmits the ambient light Lx progressively.
- the progression takes place along the height of the screen 12. The further one moves away from the border 12c to go towards the end 12a' of the upper part 12a, the more the upper part 12a obscures the ambient light Lx which arrives locally on the screen 12. While the further one moves away from the border 12c to go towards the end 12b' of the lower part 12b, the more the lower part 12b transmits the ambient light Lx which arrives locally on the screen 12 .
- the occultation is stronger towards the end 12a' of the upper part 12a, while the occultation is weaker towards the border 12c.
- the ambient light Lx which arrives locally towards the top of the upper part 12a which is close to the end 12a', will be more obscured than the ambient light Lx which arrives locally towards the bottom of the upper part 12a which is close to the border 12c which will be obscured but to a lesser extent.
- the transmission is stronger towards the end 12b' of the lower part 12b, while the transmission is weaker towards the border 12c.
- the lower part 12b is more transparent than towards the border 12c.
- the ambient light Lx which arrives locally towards the bottom of the lower part 12b which is close to the end 12b' will thus be transmitted more than the ambient light Lx which arrives locally towards the top of the lower part 12b which is close to the border 12c which will be transmitted but in a lesser way towards the inside of the light device 1.
- the upper part 12a will obscure the light beam Fx generated by the optical module 10 progressively.
- the latter will be gradually stopped by the screen 12 at its upper part 12a.
- the lower part 12b will transmit the light beam Fx to the outside of the light device 1 gradually.
- the latter will be gradually transmitted by the screen 12 at its lower part 12b.
- the screen 12 is produced by bi-injection with two injections of variable thicknesses to produce the primary element 120 and the secondary element 121.
- the screen 12 comprises two elements 120, 121 including a primary element 120 made of a crystal plastic material and a secondary element 121 which forms a film with variable transmission.
- Film 121 is placed on primary part 120.
- Screen 12 thus has variable transmission for said ambient light Lx and for said light beam Fx. In a non-limiting example, transmission varies from 90% to 10%.
- the upper part 12a obscures the ambient light Lx in a progressive manner, while the lower part 12b transmits the ambient light Lx in a progressive manner.
- the progression takes place along the height L0 of the screen 12. The further one moves away from the border 12c to go towards the end 12a' of the upper part 12a, the more the upper part 12a conceals the ambient light Lx which arrives locally on the screen 12. Whereas the further one moves away from the border 12c to go towards the end 12b' of the lower part 12b, the more the lower part 12b transmits the ambient light Lx which arrives locally on the screen 12.
- the occultation is stronger towards the end 12a' of the upper part 12a, while the occultation is weaker towards the border 12c.
- the ambient light Lx which arrives locally towards the top of the upper part 12a which is close to the end 12a', will be more obscured than the ambient light Lx which arrives locally towards the bottom of the upper part 12a which is close to the border 12c which will be obscured but to a lesser extent.
- the transparency is greater towards the end 12b' of the lower part 12b, while the transparency is lower towards the border 12c.
- the ambient light Lx which arrives locally towards the bottom of the lower part 12b which is close to the end 12b', will be transmitted more than the ambient light Lx which arrives locally towards the top of the lower part 12b which is close to the border 12c which will be transmitted but in a lesser way towards the inside of the light device 1.
- the upper part 12a will obscure the light beam Fx generated by the optical module 10 progressively.
- the latter will be gradually stopped by the screen 12 at its upper part 12a.
- the lower part 12b will transmit the light beam Fx to the outside of the light device 1 gradually.
- the latter will be gradually transmitted by the screen 12 at its lower part 12b.
- the film 121 extends along the entire surface of the primary element 120 or partially along the surface of the primary element 120.
- the film 121 is glued on the primary part 120.
- the film 121 is overmolded on the primary part 120.
- on the film 121 is deposited a deposit of black ink depending on the transmission. The more ink and/or the higher the pigment density, the more the 121 film will block out. The less black ink and/or the lower the pigment density, the more transparent the 121 film will be.
- the latter comprises ink deposits of variable thicknesses on its surface and/or variable pigment densities on its surface.
- the film 121 is arranged on the outside of said light device 1. It is therefore opposite the outside of the motor vehicle 2. In a second non-limiting variant embodiment illustrated in the , the film 121 is arranged on the inside of said light device 1. It is therefore facing the optical module 10.
- the material of the primary element 120 is PMMA (Polymethyl methacrylate) or PC (Polycarbonate).
- the screen 12 is produced by injection of the primary element 120 then gluing of the film 121 or overmoulding of the film 121.
- the screen 12 comprises three elements 120, 121, 122 including a primary element 120 made of a crystal plastic material, a secondary element 121 made of a clear smoked plastic material (60% to 80% transmission in a non-limiting example) , and a tertiary element 122 made of a dark smoked or opaque material (below 60% transmission in a non-limiting example).
- the dark smoked material allows it to be semi-opaque.
- the primary element 120 and the tertiary element 122 are adjacent to each other on one of their ends 120a, 122a and are both adjacent to the secondary element 121 along their respective lengths L0, L2.
- the primary element 120 and the tertiary element 122 have substantially equal lengths L0, L2 and the sum of their lengths L0+L2 is equal to the length L1 of the secondary element 121 and therefore at the height of the screen 12.
- the upper part 12a is thus formed by one part (the so-called upper part) of the secondary element 121 and by all of the tertiary element 122, while the lower part 12b of the screen 12 is thus formed by the other part (the so-called lower part) of the secondary element 121 and by all of the primary secondary element 120.
- the fact of coupling the secondary element 121 to the primary element 120 and the tertiary element 122 makes it possible to define in a manner specifies the transmission rate of the upper part 12a and the lower part 12b compared to the other embodiments of Figures 2 to 6.
- the primary element 120 being in crystal, it transmits the ambient light Lx beyond 90% towards the interior of the luminous device 1 in a non-limiting embodiment.
- the secondary element 121 being light smoked, it transmits ambient light Lx between 70% and 90% in a non-limiting embodiment.
- the tertiary element 122 being dark smoked or opaque, it only transmits ambient light Lx between 10% and 70% in one non-limiting embodiment.
- the upper part 12a (which combines a dark or opaque smoked element, and a light smoked element) will obscure the ambient light Lx coming from outside the motor vehicle 2, while the lower part 12b (which combines a crystal element and a clear smoked element) will transmit the ambient light Lx towards the interior of the luminous device 1.
- the lower part 12b allows a relatively high transmission of the ambient light Lx compared to the upper part 12a.
- the upper part 12a will partially obscure the light beam Fx generated by the optical module 10.
- the light beam Fx will be stopped by the screen 12 at its upper part 12a.
- the upper part 12a is thus occulting the light beam Fx; while the lower part 12b will allow the light beam Fx to pass to the outside of the light device 1.
- the light beam Fx will pass through the screen 12 at its lower part 12b.
- the lower part 12b allows a relatively high transmission of the light beam Fx compared to the upper part 12a.
- the material of the screen 12 is PMMA (Polymethyl methacrylate) or PC (Polycarbonate), whether for the primary element 120, the secondary element 121 or the tertiary element 122.
- the screen 12 is produced by an IML ("In Mold Labeling" in English) process or IMD (In-Mould-Decorating). In another non-limiting embodiment, the screen 12 is produced by tri-injection.
- the screen 12 is completely transparent (upper part 12a and lower part 12b transparent) and when the observer O is close to the light device 1, the observer O distinguishes the interior elements of the light device 1, namely he will distinguish the optical module 10 of the mask 11 in particular.
- close it is meant that the observer O is between 1 meter and 3 meters from the motor vehicle 2 and therefore from the light device 1, which corresponds to an observation angle ⁇ of between 20° and 48°.
- the viewing angle ⁇ is the horizontal straight line passing through the middle of the screen 12 and the straight line passing through the eye of the observer O.
- the Barten diagram of the illustrates CSF contrast sensitivity curves.
- five curves CSF1 to CSF5 which illustrate sensitivities to the contrast of the eye, for five different levels of luminosity which represent different adaptation luminance of the eye, the five curves CSF1 to CSF5 having a ratio of 10 between them.
- the curves CSF1 to CSF5 relate to respective sensitivity threshold values S of 0.1, 1, 10, 100 and 1000 candela per m 2 .
- the sensitivity threshold S is otherwise called contrast sensitivity S.
- contrast sensitivity S On the abscissa, we find the spatial frequency u in cycles per degree (cpd) and on the ordinate the sensitivity threshold S, that is to say the inverse of the value of the lowest detectable contrast at the considered frequency.
- the spatial frequency u corresponds to the angular size of the object observed by the eye.
- the angular size corresponds to a spatial frequency u of 1.7 cpd at a distance of 1 m.
- the angular size corresponds to 17cpd, at 25m it corresponds to 43cpd.
- the spatial frequency u will change from 5cpd to 1.7cpd for an object with a size of 10mm. This corresponds to an observation angle ⁇ between 20° and 48°.
- the spatial frequency u By approaching the luminous device 1, one thus moves on the Barten diagram from right to left.
- the smaller the spatial frequency u the better the interior elements of the light device 1 can be seen, namely the greater the contrast sensitivity S between the screen 12 and the interior elements of the light device 1. In this case, the contrast sensitivity S of the eye increases.
- the contrast representing a difference in luminance which can be expressed by (Lmax-Lmin)/(Lmax+Lmin) with Lmax the luminance of the optical module 10 in off mode and Lmin the luminance of the mask 11 in off mode in a non-limiting embodiment.
- the sensitivity to contrast S decreases when the local ambient light Lx is reduced, namely the contrast between the interior elements of the light device 1 (between the optical module 10 and the mask 11 in particular) through the screen 12 will be less perceptible to the eye, although said contrast may be the same.
- the local ambient light Lx is reduced with the upper part 12a of the screen 12 according to the different embodiments described above. As the upper part 12a of the screen 12 is partially or totally occulting, it will limit the quantity of ambient light Lx which enters the light device 1 via the screen 12.
- the observer O who is at the position P2 with a distance d2 greater than the distance d1 and an angle of observation ⁇ 2 less than the angle of observation ⁇ 1 is far from the luminous device 1.
- its viewing angle ⁇ will be such that it will see the interior elements of the light device 1 mainly through the lower part 12b of the screen 12.
- the observer at the position P2 may be at the same height as the observer at position P1 but its distance d2 is much greater than distance d1.
- the sensitivity to contrast S of the eye decreases sharply.
- the greater the spatial frequency u the more difficult it is to distinguish the interior elements of the luminous device 1, namely the less the contrast between the interior elements (between the optical module 10 and the mask 11 in particular) of the luminous device 1 will be perceptible at the eye.
- the observer O will be less able to distinguish the interior elements of the luminous device 1, even if the screen 12 is transparent at its lower part 12b. Indeed, when the observer O is far from the light device 1, the interior elements of the light device 1 will be smaller in angular size, which corresponds to a larger spatial frequency u, and therefore to a greater contrast sensitivity S. small. Thus, the lower part 12b can remain transparent and does not need to be blackout like the upper part 12a.
- Barten diagram is valid for day or night vision.
- the optical module 10 is arranged opposite the screen 12 so that the light beam Fx mainly or entirely passes through its lower part 12b.
- the lower part 12b of the screen 12 which will transmit the light beam F to the outside of the light device 1.
- the optical performance of the light function F is thus not impacted by the concealment of the part upper 12a previously described.
- the optical performance is thus not degraded, in particular, for the regulatory light functions whose vertical angle of emission is between plus or minus 15° with respect to an axis parallel to the road passing through the optical module 10.
- the light function F in on mode (namely the light sources 100 are activated and therefore emit the light rays R1) when close to the motor vehicle 2, in one non-limiting embodiment, it will be preferred to have an upper part 12a partially concealing and not completely concealing.
- the contrast sensitivity S of the eye is in this case high, which makes it possible to see the light function F activated despite a partial degradation of its optical performance due to the upper part 12a obscuring it.
- this non-limiting embodiment is used in particular for reinforced light functions. In the case of a style light function, performance is less important. It is therefore possible to have an upper part 12a which completely conceals.
- the description of the invention is not limited to the embodiments described above and to the field described above.
- the light device 1 can further comprise as interior elements, in addition to the optical module 10 and the mask 11, a connection harness for the light sources 100 to power them or even one or more electronic cards which serves as a support for said light sources. 100.
- one or more of the primary 120, secondary 121 or tertiary 122 elements of the embodiments of Figures 2 to 3 and 5 to 7 may have a variable thickness as in the case of the third non-limiting embodiment illustrated in the .
- the invention described has in particular the following advantages: - it makes it possible to reduce the transmission of the upper part 12a of the screen 12 of the light device 1, - it makes it possible to hide the interior elements of the luminous device 1 for close observation, - it makes it possible not to affect the optical performance of said at least one light function F performed by the light device 1, - it is an alternative solution that is less cumbersome than a mechanical solution that uses a mobile cache, - it is a less expensive alternative solution than an electro-optical solution using an LCD screen to obscure the light Lx in the off mode of the optical module 10.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
Description
- au moins un module optique comprenant au moins une source de lumière, et
- un masque entourant ledit module optique, et
- un écran teinté disposé en regard dudit module optique, ledit écran étant configuré pour transmettre un faisceau lumineux issu de rayons lumineux de ladite au moins une source lumineuse dudit module lumineux vers l’extérieur dudit véhicule et pour arrêter la lumière ambiante provenant de l’extérieur du véhicule de sorte qu’elle n’éclaire pas les éléments intérieurs du dispositif lumineux. Ainsi, en mode éteint, on ne peut plus distinguer le module optique du masque.
- un module optique 10 avec au moins une source lumineuse 100, et
- un écran 12.
- elle permet de réduire la transmission de la partie supérieure 12a de l’écran 12 du dispositif lumineux 1,
- elle permet de cacher les élément intérieurs du dispositif lumineux 1 pour une observation proche,
- elle permet de ne pas affecter les performances optiques de ladite au moins une fonction lumineuse F réalisée par le dispositif lumineux 1,
- c’est une solution alternative moins encombrante qu’une solution mécanique qui utilise un cache mobile,
- c’est une solution alternative moins coûteuse qu’une solution électro-optique utilisant un écran LCD pour occulter la lumière Lx en mode éteint du module optique 10.
Claims (15)
- Dispositif lumineux (1) pour véhicule (2), ledit dispositif lumineux (1) étant configuré pour réaliser au moins une fonction lumineuse (F) et comprenant au moins un module optique (10) et un écran (12) disposé en regard dudit module optique (10), caractérisé en ce que ledit écran (12) comprend au moins deux éléments (120, 121) qui sont agencés entre eux pour former une partie supérieure (12a) et une partie inférieure (12b) dudit écran (12), ladite partie supérieure (12a) étant configurée pour occulter la lumière ambiante (Lx) provenant de l’extérieur dudit véhicule (2), et ladite partie inférieure (12b) étant configurée pour transmettre ladite lumière ambiante (Lx).
- Dispositif lumineux (1) selon la revendication 1, selon lequel ledit module optique (10) est configuré pour générer un faisceau lumineux (Fx), et ladite partie supérieure (12a) est configurée pour occulter ledit faisceau lumineux (Fx), et ladite partie inférieure (12b) est configuré pour transmettre ledit faisceau lumineux (Fx).
- Dispositif lumineux (1) selon l’une quelconque des revendications précédentes, selon lequel l’occultation par ladite partie supérieure (12a) est partielle ou totale.
- Dispositif lumineux (1) selon l’une quelconque des revendications précédentes, selon lequel ledit écran (12) comprend un élément primaire (120) en matériau plastique cristal.
- Dispositif lumineux (1) selon l’une quelconque des revendications précédentes, selon lequel ledit écran (12) comprend un élément secondaire (121) en matériau plastique fumé ou opaque.
- Dispositif lumineux (1) selon la revendication 5, selon ledit élément primaire (120) et ledit élément secondaire (121) sont adjacents sur une de leurs extrémités (120a, 121a).
- Dispositif lumineux (1) selon la revendication 5, selon lequel ledit élément primaire (120) et ledit élément secondaire (121) sont adjacents le long de leurs longueurs (L0, L1).
- Dispositif lumineux (1) selon la revendication 7, selon lequel ledit élément secondaire (121) possède une longueur (L1) inférieure à celle (L0) dudit élément primaire (120).
- Dispositif lumineux (1) selon la revendication 7, selon lequel ledit élément primaire (120) et ledit élément secondaire (121) sont sensiblement de longueurs (L0, L1) égales, et sont d’épaisseurs variables (e0, e1), l’épaisseur (e0) dudit élément primaire (120) variant de façon inverse à l’épaisseur (e0) dudit élément secondaire (121) de sorte que ledit écran (12) est à transmission variable pour ladite lumière ambiante (Lx).
- Dispositif lumineux (1) selon la revendication 4, selon lequel ledit écran (12) comprend un élément secondaire (121) qui forme un film à transmission variable pour ladite lumière ambiante (Lx), ledit film étant disposé sur ladite partie primaire (120).
- Dispositif lumineux (1) selon la revendication précédente, selon lequel ledit film est disposé côté extérieur dudit dispositif lumineux (1) ou côté intérieur dudit dispositif lumineux (1).
- Dispositif lumineux (1) selon la revendication 5, selon lequel ledit écran (12) comprend en outre un élément tertiaire (122) en matériau opaque ou fumé foncé, ledit élément primaire (120) et ledit élément tertiaire (122) étant adjacents entre eux sur une de leurs extrémités (120a, 122a) et adjacents avec ledit élément secondaire (121) le long de leurs longueurs (L0, L2).
- Dispositif lumineux (1) selon la revendication 2, selon lequel ledit module optique (10) est agencé en regard dudit écran (12) de sorte que ledit faisceau lumineux (Fx) traverse principalement ladite partie inférieure (12b) dudit écran (12).
- Dispositif lumineux (1) selon l’une quelconque des revendications précédentes, selon lequel ledit dispositif lumineux (1) comprend en outre un masque (11) entourant ledit module optique (10).
- Dispositif lumineux (1) selon l’une quelconque des revendications précédentes, selon lequel ladite fonction lumineuse (F) est une fonction d’éclairage, ou une fonction de signalisation, ou une fonction lumineuse de style, ou une fonction lumineuse renforcée.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/555,417 US20240191857A1 (en) | 2021-04-13 | 2022-04-05 | Lighting device for a vehicle, comprising a screen having a masking part and a transparent part |
EP22720716.4A EP4323691A1 (fr) | 2021-04-13 | 2022-04-05 | Dispositif lumineux pour vehicule comprenant un ecran ayant une partie occultante et une partie transparente |
CN202280028205.3A CN117203466A (zh) | 2021-04-13 | 2022-04-05 | 用于车辆的包括具有遮掩部分和透明部分的屏幕的照明装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FRFR2103817 | 2021-04-13 | ||
FR2103817A FR3121735B1 (fr) | 2021-04-13 | 2021-04-13 | Dispositif lumineux pour véhicule comprenant un écran occultant et transparent |
Publications (1)
Publication Number | Publication Date |
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WO2022218764A1 true WO2022218764A1 (fr) | 2022-10-20 |
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ID=76523079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2022/059022 WO2022218764A1 (fr) | 2021-04-13 | 2022-04-05 | Dispositif lumineux pour vehicule comprenant un ecran ayant une partie occultante et une partie transparente |
Country Status (5)
Country | Link |
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US (1) | US20240191857A1 (fr) |
EP (1) | EP4323691A1 (fr) |
CN (1) | CN117203466A (fr) |
FR (1) | FR3121735B1 (fr) |
WO (1) | WO2022218764A1 (fr) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2794218A1 (fr) * | 1999-05-26 | 2000-12-01 | Valeo Vision | Feu de signalisation pour vehicule automobile |
WO2001028744A1 (fr) * | 1999-10-18 | 2001-04-26 | Exatec, Llc. | Vitre d'automobile en plastique moule et procede pour former une bordure de masquage |
US6416209B1 (en) * | 2000-08-10 | 2002-07-09 | Daimlerchrysler Corporation | Exterior courtesy lighting/fender mounted |
FR2861640A1 (fr) * | 2003-10-29 | 2005-05-06 | Bnl Eurolens | Procede et dispositif de fabrication d'une lentille a teinte degradee |
JP2014120349A (ja) * | 2012-12-17 | 2014-06-30 | Koito Mfg Co Ltd | 車両用灯具 |
FR3014787A1 (fr) * | 2013-12-12 | 2015-06-19 | Peugeot Citroen Automobiles Sa | Dipositif de signalisation lumineuse |
FR3016578A1 (fr) * | 2014-01-21 | 2015-07-24 | Peugeot Citroen Automobiles Sa | Pare-chocs de vehicule |
DE102017006693A1 (de) * | 2017-07-14 | 2018-01-25 | Daimler Ag | Fahrzeugfrontverkleidung eines Kraftfahrzeuges, Kraftfahrzeug |
EP3483499A1 (fr) * | 2017-10-17 | 2019-05-15 | Seat, S.A. | Dispositif d'éclairage extérieur pour un véhicule et procédé de fabrication |
FR3074566A1 (fr) * | 2017-12-05 | 2019-06-07 | Automotive Lighting Rear Lamps France | Dispositif lumineux discret pour vehicule automobile |
-
2021
- 2021-04-13 FR FR2103817A patent/FR3121735B1/fr active Active
-
2022
- 2022-04-05 WO PCT/EP2022/059022 patent/WO2022218764A1/fr active Application Filing
- 2022-04-05 EP EP22720716.4A patent/EP4323691A1/fr active Pending
- 2022-04-05 CN CN202280028205.3A patent/CN117203466A/zh active Pending
- 2022-04-05 US US18/555,417 patent/US20240191857A1/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2794218A1 (fr) * | 1999-05-26 | 2000-12-01 | Valeo Vision | Feu de signalisation pour vehicule automobile |
WO2001028744A1 (fr) * | 1999-10-18 | 2001-04-26 | Exatec, Llc. | Vitre d'automobile en plastique moule et procede pour former une bordure de masquage |
US6416209B1 (en) * | 2000-08-10 | 2002-07-09 | Daimlerchrysler Corporation | Exterior courtesy lighting/fender mounted |
FR2861640A1 (fr) * | 2003-10-29 | 2005-05-06 | Bnl Eurolens | Procede et dispositif de fabrication d'une lentille a teinte degradee |
JP2014120349A (ja) * | 2012-12-17 | 2014-06-30 | Koito Mfg Co Ltd | 車両用灯具 |
FR3014787A1 (fr) * | 2013-12-12 | 2015-06-19 | Peugeot Citroen Automobiles Sa | Dipositif de signalisation lumineuse |
FR3016578A1 (fr) * | 2014-01-21 | 2015-07-24 | Peugeot Citroen Automobiles Sa | Pare-chocs de vehicule |
DE102017006693A1 (de) * | 2017-07-14 | 2018-01-25 | Daimler Ag | Fahrzeugfrontverkleidung eines Kraftfahrzeuges, Kraftfahrzeug |
EP3483499A1 (fr) * | 2017-10-17 | 2019-05-15 | Seat, S.A. | Dispositif d'éclairage extérieur pour un véhicule et procédé de fabrication |
FR3074566A1 (fr) * | 2017-12-05 | 2019-06-07 | Automotive Lighting Rear Lamps France | Dispositif lumineux discret pour vehicule automobile |
Also Published As
Publication number | Publication date |
---|---|
EP4323691A1 (fr) | 2024-02-21 |
US20240191857A1 (en) | 2024-06-13 |
FR3121735B1 (fr) | 2023-05-12 |
CN117203466A (zh) | 2023-12-08 |
FR3121735A1 (fr) | 2022-10-14 |
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