WO2024104939A1 - Module d'eclairage multifonction pour vehicule automobile - Google Patents
Module d'eclairage multifonction pour vehicule automobile Download PDFInfo
- Publication number
- WO2024104939A1 WO2024104939A1 PCT/EP2023/081562 EP2023081562W WO2024104939A1 WO 2024104939 A1 WO2024104939 A1 WO 2024104939A1 EP 2023081562 W EP2023081562 W EP 2023081562W WO 2024104939 A1 WO2024104939 A1 WO 2024104939A1
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- WIPO (PCT)
- Prior art keywords
- light
- lighting module
- light rays
- collector
- reflected
- 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.)
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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
- F21S41/10—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]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
-
- 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
- F21S41/24—Light guides
-
- 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
- F21S41/26—Elongated 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/265—Composite lenses; Lenses with a patch-like shape
-
- 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
-
- 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
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
- F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with discontinuity at the junction between adjacent areas
-
- 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
-
- 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
-
- 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
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
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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
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
- F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
- F21W2102/16—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having blurred cut-off lines
Definitions
- the invention relates to the field of lighting, in particular lighting for motor vehicles.
- the published patent document FR 3 093 789 A1 discloses a luminous device imaging the illuminated surfaces of at least two collectors in order to participate in the realization of two lighting functions.
- the light sources are arranged on either side, vertically, of the optical axis and so as to illuminate in opposite directions.
- the light rays reflected by the upper collector are projected by an upper part of an optical projection device into a first light beam and the light rays reflected by the lower collector are projected by a lower part of the optical projection device into a second beam luminous.
- the first light beam participates in the realization of a first lighting function
- the first and second light beams participate together in the realization of a second lighting function.
- An absorbent screen is placed between the light sources and the optical projection device, essentially along the optical axis.
- This screen is intended to prevent any transmission of light rays from the upper part to the lower part and vice versa.
- This light device has the disadvantage that when the first function is active, only the upper part of the optical projection device is illuminated. The lower part of the optical projection device is not illuminated. On the contrary, when the second lighting function is active, the upper part and the lower part of the optical projection device are illuminated. In other words, the optical projection device is completely illuminated.
- the optical projection device therefore has at least two illuminated aspects, one where it is completely illuminated and one where only part is illuminated.
- the presence of the absorbent screen has the effect of creating a dark zone on the optical projection device, between the upper part and the lower part of the optical projection device when the second lighting function is active.
- the object of the invention is to overcome at least one of the disadvantages of the aforementioned state of the art. More particularly, the invention aims to enable a multifunctional lighting device or module to present an aspect of the optical projection device which is homogeneous according to the different lighting functions emitted, as well as when no lighting function is not active.
- the subject of the invention is a lighting module, in particular for a motor vehicle, comprising at least a first light source capable of emitting first light rays; a first collector with a first reflective surface configured to reflect the first light rays into first light rays reflected in a first main direction parallel to an optical axis of the lighting module; at least one second light source capable of emitting second light rays; a second collector adjacent to the first collector and with a second reflective surface configured to reflect the second light rays into second light rays reflected in a second main direction parallel to the first main direction; an optical device for projecting, along the optical axis, first and second reflected light rays, with a first entry face for the first reflected light rays and a second entry face for the second reflected light rays; a partition wall between the first reflected light rays and the second reflected light rays, extending between the optical projection device and the first and second collectors; in which the dividing wall is made of a transparent or translucent material,
- the optical projection device makes it possible to project, via the first input face, the first reflected rays into a first light beam.
- the optical device also makes it possible to project, via the second input face, the second rays reflected into a second light beam.
- the first light beam can participate in the realization of a first lighting function, and the first and second light beams can participate together in the realization of a second lighting function.
- the first lighting function may be a function with upper horizontal cut-off, of the “code” type
- the second lighting function may be a function without horizontal cut-off, of the “road” type.
- the first light beam can participate in the realization of a first lighting function
- the second light beam can participate in the realization of a second lighting function
- the fraction of the first or second reflected light rays transmitted towards the second or first input face, respectively is between 5 and 30% in light intensity of said first or second reflected light rays.
- the translucent material is opalescent.
- the translucent material has, in the visible spectrum, a translucency rate greater than or equal to 30% according to the ASTM D1003-21 test.
- the translucent material is absorbent in the visible spectrum and has, in said visible spectrum, an absorption coefficient a, where 0.5mm -1 >a>0.3mm _1 , according to Beer's law -Lambert.
- the separation partition has a light exit face facing the optical projection device.
- the lighting module further comprises at least one auxiliary light source arranged so as to illuminate at least one light entry face of the partition wall.
- the at least one auxiliary light source is arranged opposite the at least one light entry face.
- the at least one light entry face of the separation partition is opposite the light exit face of said partition and transverse to the optical axis.
- the at least one first light source and the at least one second light source are arranged to illuminate in directions transverse to the optical axis which are opposite, the at least one first source light and the first collector being arranged above the at least one second light source and the second collector, when the lighting module is in the normal mounting position.
- the at least one first light source and the at least one second light source are arranged so as to illuminate in main directions, respectively, which are transverse to the optical axis and on either side and on the other hand, horizontally, of said optical axis, when the lighting module is in the normal mounting position.
- the lighting module comprises at least transverse screen arranged between at least one of the first and second collectors and the optical projection device, so as to intercept stray rays among the first and/or second reflected light rays, at least one transverse screen being made of a transparent or translucent material, in the visible spectrum, configured to transmit a fraction of the intercepted stray rays towards the first and/or second input face of the optical projection device.
- the measures of the invention are advantageous in that they ensure an illuminated appearance of the entire optical projection device, during the emission of the first light beam alone, the second light beam alone and simultaneous remission of the first and second light beams, and this by simple, economical and space-saving means.
- the measures of the invention also make it possible to ensure a satisfactory unlit appearance.
- the graining and/or the translucent or opalescent property of the material forming the partition wall and/or the transverse screens make it possible to provide a homogeneous unilluminated appearance masking certain interior construction details of the lighting module.
- the absorbent property of the material forming the partition wall makes it possible to improve the unlit appearance because the partition wall separation is then darkened.
- the absorbent property of the material forming the partition wall also makes it possible to limit the number of first and second reflected rays which can pass to the other side of the partition wall, and thus to limit the quantity of first reflected rays which interfere with the second reflected rays.
- FIG 1 is a schematic sectional view of a dual-function lighting module according to the state of the art, when both functions are active;
- FIG 2 corresponds to Figure 1, where only one function is active
- FIG 3 is a schematic sectional view of a dual-function lighting module where only one function is active, according to a first embodiment of the invention, where the dividing wall is transparent and grained;
- FIG 4 corresponds to Figure 3, where the dividing wall is translucent or opalescent
- FIG 5 corresponds to Figure 3, where the dividing wall is translucent or opalescent and absorbent
- FIG 6 is a schematic sectional view of a dual-function lighting module according to a second embodiment of the invention.
- Figures 1 and 2 illustrate a dual-function lighting module according to the state of the art.
- the lighting module 2 comprises a first light source 4 illuminating in a main direction directed upwards, a first collector 6 with a reflective surface in the form of a cap whose opening is directed towards the first light source 4, a first lens projection 8a of the rays reflected by the first collector 6.
- the first projection lens 8a projects the rays reflected by the first collector 6 into a first light beam.
- the lighting module 2 further comprises a second light source 10, illuminating in a main direction directed downwards, a second collector 12 with a reflective surface in the form of a cap whose opening is directed towards the second light source 10, a second projection lens 8b of the rays reflected by the second collector 12.
- the second projection lens 8b projects the rays reflected by the second collector 12 into a second light beam.
- the first projection lens 8a and the second projection lens 8b are in one piece and form an optical projection device 8.
- the first projection lens 8a and the second projection lens 8b each have an entry face and an exit face.
- the optical projection device 8 comprises an upper entrance face 8.1.1, formed by the entrance face of the first projection lens 8a, and a lower entrance face 8.1.2 formed by the entrance face of the second projection lens 8b.
- the optical projection device 8 also comprises an exit face 8.2 formed by the exit faces of the first projection lens 8a and the second projection lens 8b and essentially covering the upper 8.1.1 and lower 8.1 entry faces. 2.
- the first and second light sources 4 and 10 and the first and second collectors 6 and 12, and the optical projection device 8 are aligned along an optical axis 14 of the lighting module 2.
- each of the first and second projection lenses 8a, 8b comprise a specific optical axis associated with the first and second light sources.
- the optical axis 14 of the lighting module can then be considered as an average optical axis of the optical projection device 8 formed by the first and second projection lenses 8a, 8b.
- the first and second light sources 4 and 10 are opposite each other.
- the first and second light sources 4, 10 are arranged on opposite faces of a common support 16.
- the common support 16 also serves as a heat sink.
- the common support 16 is aligned with the optical axis 14. The main axis of emission of each light source 4, 10 is thus perpendicular to the optical axis 14.
- the lighting module 2 also comprises a separation partition 18 extending along the optical axis 14, between, on the one hand, the first and second light sources 4 and 10, and, on the other hand, the optical device projection.
- This separation partition 18 is opaque and thus blocks any light ray from the first light source 4, in particular reflected by the first collector 6, capable, in the absence of the separation partition 18, of reaching the lower entrance face 8.1.2 of the optical projection device 8 and thus disrupt the light beam normally produced by the second light source 10 and the second collector 12.
- first projection lens 8a and the second projection lens 8b each have a focus located on the reflecting surface of the first collector 6, respectively on the reflecting surface of the second collector 12, so as to image the reflecting surfaces then illuminated by the corresponding light source.
- the focus of the first projection lens 8a can be located in the vicinity of a rear edge of the first collector 6 and/or the focus of the second projection lens 8b can be located in the vicinity of a rear edge of the second collector 12.
- located in the vicinity we mean located at a distance less than or equal to 10 mm.
- each of the first and second collectors 6 and 12 has an essentially elliptical or parabolic profile with a focus located at the corresponding light source, so that the rays thus emitted are reflected towards the optical projection device 8.
- the light beam thus projected is an inverted image of the illuminated reflective surface.
- the profile may include a second focus located near the optical projection device 8 or in front of the optical projection device 8, considering the direction of light emission in the lighting module 2 .
- Figure 1 illustrates the lighting module 2 when the first light beam and the second light beam are emitted.
- the output face 8.2 of the optical projection device 8 is shown in front view, to the right of Figure 1. It can be observed that the entire exit face 8.2 is illuminated, the upper part being illuminated by the first light beam and the lower part being illuminated by the second light beam.
- Figure 2 illustrates the lighting module 2 when only the first light beam is emitted.
- the output face 8.2 of the optical projection device 8 is shown in front view, to the right of Figure 2. It can be observed that only the upper part of the output face 8.2 is illuminated, the lower part remaining completely unlit. lit and therefore dark compared to the upper part.
- This situation can in particular occur when the first light beam participates in the formation of a first lighting function taking the form of a lighting function with upper horizontal cut-off, namely for example a "low beam” function. or “code” or by the Anglo-Saxon expression “low beam”, capable of operating without the second light beam.
- the second light beam can for example be a beam without horizontal break and form a "complementary high beam” beam distribution, which added to the "low beam” function makes it possible to form a "main beam” function, sometimes designated by the expression “full headlight” or by the Anglo-Saxon expression “high-beam”.
- activation of the second lighting function causes both the upper part of the output face 8.2 to be illuminated, and the lower part of the output face 8.2 to be illuminated, as shown in the figure. figure 1.
- the illuminated appearance of the optical projection device 8 is therefore different between the first lighting function, where the optical projection device is partially illuminated, and the second lighting function where the optical projection device is fully illuminated. This difference in illuminated appearance of the lighting module is aesthetically and stylistically undesirable.
- Figure 3 illustrates a lighting module according to a first embodiment of the invention.
- the reference numbers of the lighting module in Figures 1 and 2 are used to designate identical or corresponding elements, these numbers being however increased by 100. Reference is also made to the description of these elements in relation to Figures 1 and 2. Specific reference numbers between 100 and 200 are used to designate the elements specific to this embodiment.
- the lighting module 102 of Figure 3 differs from the lighting module of Figures 1 and 2, essentially in that the partition wall 118 is transparent and grained, so as to allow a fraction of the light rays reflected by the first collector 106, namely the rays incident on the upper face 118.1 of the partition wall 118, to pass through the partition wall 118 and propagate towards the entrance face lower 108.1.2 of the optical projection device 108.
- This thus allows the exit face 108.2 of the optical projection device 108, illustrated in front view to the right of Figure 3, to present an illuminated appearance over its entire extent when only one of the first and second light beams is emitted.
- the graining of the partition wall 118 can be carried out on one or each of the upper 118.1 and lower 118.2 faces.
- the first and second light beams can be activated alone, only the face of the separation partition 1 18 facing the collector reflecting the rays from which this first or second light beam is formed can be grained.
- the first light beam produced by the first light source 104, the first collector 106 and the first projection lens 108a, can be activated alone to form the first lighting function.
- the first lighting function may be an automotive lighting function with upper horizontal cut-off, namely for example a “low beam” or “code” or by the Anglo-Saxon expression “low beam”.
- the separation partition 118 due to its transparent material, can have a light exit face 118.3 facing the optical projection device 108.
- This light exit face 118.3 is in the occurrence of a front face of the partition wall 118, arranged directly opposite the optical projection device 108.
- Part of the light diffused in the partition wall 118 from one of the upper faces 118.1 and lower faces 118.2 can propagate along the partition wall 118, by successive total reflections, the partition wall 118 then acting as a light guide.
- the light leaving the light exit face 118.3 then enters the optical projection device 108 at the junction of the upper 108.1.1 and lower 108.1.2 entry faces. This light ensures lighting of the exit face 108.2 at the junction of the upper and lower parts corresponding to the upper 108.1.1 and lower 108.1.2 entry faces.
- the configuration of the separation wall 118 such as in Figure 3 has the advantage of providing a relatively homogeneous illuminated appearance of the exit face 108.2 of the optical projection device while only one of the first and second light beams is active , and this without adding complex and expensive elements such as additional light sources.
- it has the disadvantage that the fraction of the light rays of one of the first and second light beams which pass through the dividing wall 118 is sufficiently large to interfere with the formation of the other of the first and second light beams. This phenomenon is commonly referred to by the Anglo-Saxon expression “cross-talk”.
- Figure 4 illustrates a lighting module according to the first embodiment of the invention, such as in Figure 3, where however the partition wall 1 18' is translucent or opalescent.
- a material is said to be translucent if it allows light to pass through without allowing objects to be clearly distinguished, due to multiple anisotropic refractions of light rays.
- Opalescence is the optical property of a transparent or translucent material which gives it a milky appearance or tint, with iridescent reflections reminiscent of opal.
- the degree of translucency or opalescence in a material can be determined following the ASTM D1003-21 test method. When a material has a degree of translucency or “haze” of more than 30%, it is then considered diffusing.
- the material of the partition wall 118' advantageously has a degree of translucency or "haze" of more than 30%. It then ensures the transmission of a fraction of the rays emitted by one of the lighting functions to the other lighting function.
- Figure 5 illustrates a lighting module according to the first embodiment of the invention, such as in Figure 4, where however the partition wall 1 18", in addition to being translucent or opalescent, is also absorbent.
- the material can be said to be “smoked”, that is to say containing in its mass dark particles capable of absorbing part of the light passing through it, in this case in the visible spectrum.
- the absorbent property of a transparent or translucent material can be assessed and determined by the Beer-Lambert law, namely
- / 0 (A) is the incident intensity on the material as a function of wavelength (neglecting Fresnel reflections)
- /( ⁇ , ) is the emergent intensity of the material as a function of wavelength wave ⁇ (neglecting Fresnel reflections)
- X is the thickness of the material (in mm)
- an uncolored transparent material such as PMMA
- PMMA has an absorption coefficient 0.03mm -1 >a>0.0001 mm -1
- a material transparent or translucent called “smoked” has an absorption coefficient 0.5mnr 1 >a>0.3mnr 1 .
- the translucent or opalescent, absorbent material of the 118” partition wall has an absorption coefficient of 0.5mm -1 >a>0.3mm _1 .
- the absorbent property of the transparent or translucent material of the partition wall is advantageous in that it makes it possible to limit the fraction of light rays passing from one function to another, while allowing sufficient passage to ensure a homogeneous illuminated appearance when Only one function is active.
- the absorbent property of the transparent or translucent material also ensures a generally dark and matte off-white appearance.
- one or more auxiliary light sources 120 can be provided facing a light entry face 118”.4 of the partition wall 118”.
- the light emitted by this or these auxiliary light sources 120 enters the separation partition 1 18” and propagates longitudinally along the optical axis 114 by successive reflections in the diopters formed by the upper 118”1 and lower 1 18” faces. 2 with ambient air, by the principle of total reflection. These rays then reach the light exit face 118.3 and supply the part of the optical media projection device at the junction of the upper entry faces 108.1.1 and lower 108.1.2.
- This or these auxiliary light sources 120 are advantageously arranged on the common support 116, also serving as a heat sink for the light sources.
- first and second light sources 104 and 110 can be arranged on separate plates, parallel and supported by the common support 116 extending along the optical axis 114.
- the auxiliary light source(s) 120 can then be arranged on a front face of the common support 116.
- Figure 6 illustrates a lighting module according to a second embodiment of the invention.
- the reference numbers of the lighting module in Figures 3 to 5 are used to designate identical or corresponding elements, these numbers being however increased by 100. Reference is also made to the description of these elements in relation to Figures 3 to 5. Specific reference numbers between 200 and 300 are used to designate the elements specific to this embodiment.
- the lighting module 202 of the second embodiment differs from that of the first essentially in that the first and second light beams, instead of being emitted one above the other, are emitted side by side. side.
- the collectors 206, 212 are juxtaposed in a transverse direction, and not superimposed in a vertical direction as in the first embodiment.
- the central partition wall 218.1 between the first and second collectors 206, 212 is made of transparent, translucent or opalescent and optionally absorbent material, similar to the partition walls 118, 1 18' and 118” of Figures 3, 4 and 5.
- the lighting module comprises several first light sources 204 distributed transversely to the optical axis 214 of the optical projection device 208.
- the first collector 206 forms several reflective caps adjacent to each other and with their openings directed towards the sources corresponding lights.
- the first light sources 204, the first collector 206 and the first projection lens 208a form the first light beam.
- the first light beam participates in the formation of a first lighting function, which is here an automobile lighting function without upper horizontal cutoff, commonly referred to as "complementary road”, and which added a "low beam” function makes it possible to form a function called “high beam” or “full headlight”.
- This function is called matrix, because it forms a light beam divided into adjacent light zones which can be selectively activated, each light zone corresponding to one of the first light sources 204 and the corresponding reflective cap of the first collector 206.
- the first light sources 204 then illuminate towards the bottom and the first collector 206 is located under the first light sources 204.
- the reflected light rays emitted by the first light sources 204 and reflected by the first collector 206 propagate towards the entrance face of the first projection lens 208a, forming the left entry face 208.1.1 of the optical projection device 208.
- the lighting module comprises several second light sources 210 distributed transversely to the optical axis 214 of the optical projection device 208, similarly to the first light sources 204.
- the second collector 212 forms several reflective caps adjacent to each other and with their opening directed towards the corresponding light source, similarly to the first collector 206.
- the second light sources 210, the second collector 212 and the second projection lens 208b form the second light beam.
- the second light beam participates in the formation of a second lighting function, which here is an automobile lighting function without upper horizontal cutoff. It can for example be a matrix “complementary road” function completing the lighting function provided by the first light sources 204 and the first collector 206.
- the reflected light rays emitted by the second light sources 210 and reflected by the second collector 212 are propagate towards the entrance face of the second projection lens 208b, forming the right entrance face 208.1.2 of the optical projection device 208.
- each of the first and second projection lenses 208a, 208b comprises a specific optical axis associated with the corresponding light sources, these two optical axes being preferably parallel.
- the optical axis 214 of the lighting module can be considered as an average optical axis of the optical projection device 208 formed by the first and second projection lenses 208a, 208b.
- the central separation partition 218.1, between the first and second light beams described above, is advantageously made of transparent, translucent or opalescent and optionally absorbent material, to allow a fraction of the light rays of the first and second light beams to reach the opposite entrance face 208.1.1 or 208.1.2 of the optical projection device 208.
- One or more auxiliary light sources 220.1 can be arranged opposite a light entry face of the central partition wall 218.1, similar to the lighting module of Figure 5.
- the lighting module 204 also includes transverse screens 222.1 and 222.2, arranged longitudinally between the optical projection device 208 and the first and second collectors 206 and 212. These transverse screens 222.1 and 222.2 are arranged so as to intercept and block certain rays parasitic reflected light likely to degrade the sharpness of certain bright areas of the so-called matrix light image. At least one, in this case each, of the two transverse screens 222.1 and 222.2 is made of transparent, translucent or opalescent and optionally absorbent material, similar to the partition walls 118, 118' and 1 18” of Figures 3, 4 and 5 , so as to ensure lighting of the otherwise unilluminated parts of the corresponding entrance face 208.1.1 or 208.1.2.
- each of the first and second collectors 206 and 212 is configured to cause the reflected light rays to converge horizontally, towards a central part of the corresponding entry face 208.1.1 or 208.1.2 of the optical device of projection 208.
- the transverse screens 222.1 and 222.2 made of transparent, translucent or opalescent and optionally absorbent material make it possible to ensure illumination, even reduced, of otherwise unilluminated parts of the corresponding entry face of the optical projection device 208.
- the lighting module 202 may include, in addition to the central partition wall 218.1, side partition walls 218.2 and 218.3. These partitions can also be made of transparent, translucent or opalescent and optionally absorbent material, similar to the separation partitions 118, 1 18' and 118” of Figures 3, 4 and 5. This is useful in particular when one or more auxiliary light sources 220.2 and 220.3 are arranged opposite the light entry faces of the side partition walls 218.2 and 218.3 in question. It should be noted that the lighting module 202 is not limited to the two functions described above and visible in Figure 6. It is in fact possible to provide other functions arranged laterally to those visible in Figure 6.
- these additional functions can be arranged laterally directly to the right of the lateral partition wall 218.3, in which case, the fact that this partition wall is made of transparent, translucent or opalescent and optionally absorbent material makes it possible to pass a fraction of the light rays emitted by the adjacent lighting function towards the right input face 208.1.2 of the optical projection device. It is understood that in the presence of additional lighting functions, the optical projection device extends further to these functions.
- the partition walls 218.1, 218.2 and 218.3 can have a cross section which varies along their extent, along the optical axis 214.
- the thickness of the partition wall gradually decreases from back to front, that is to say following the main direction of propagation of the light rays.
- the lighting modules according to the two embodiments described above comprise an optical projection device in the form of a juxtaposition of projection lenses
- other forms of device projection optics are possible, such as in particular an optical mirror projection device, such as that illustrated in Figures 16 and 17 of the published patent application WO 2020/025171 A1.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380078746.1A CN120187982A (zh) | 2022-11-14 | 2023-11-13 | 用于机动车辆的多功能照明模块 |
| EP23804701.3A EP4619681A1 (fr) | 2022-11-14 | 2023-11-13 | Module d'eclairage multifonction pour vehicule automobile |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2211810 | 2022-11-14 | ||
| FR2211810A FR3141988B1 (fr) | 2022-11-14 | 2022-11-14 | Module d’eclairage multifonction avec dispositif optique de projection à aspect éclairé |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024104939A1 true WO2024104939A1 (fr) | 2024-05-23 |
Family
ID=85222524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/081562 Ceased WO2024104939A1 (fr) | 2022-11-14 | 2023-11-13 | Module d'eclairage multifonction pour vehicule automobile |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4619681A1 (fr) |
| CN (1) | CN120187982A (fr) |
| FR (1) | FR3141988B1 (fr) |
| WO (1) | WO2024104939A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016109132A1 (de) * | 2016-05-18 | 2017-11-23 | Hella Kgaa Hueck & Co. | Scheinwerfer, insbesondere Scheinwerfer eines Kraftfahrzeugs |
| WO2020025171A1 (fr) | 2018-07-31 | 2020-02-06 | Valeo Vision | Module lumineux imageant la surface eclairee d'un collecteur |
| EP3708904A1 (fr) * | 2019-03-14 | 2020-09-16 | Valeo Vision | Dispositif lumineux imageant les surfaces eclairees d'au moins deux collecteurs |
| DE112020000019T5 (de) * | 2019-07-11 | 2021-04-15 | Zhejiang Bicom Optics Co. | Zweistärkenlinsenmodul, Scheinwerfer und Fahrzeug |
| WO2022129426A1 (fr) * | 2020-12-18 | 2022-06-23 | Valeo Vision | Module d'éclairage pour véhicule automobile |
-
2022
- 2022-11-14 FR FR2211810A patent/FR3141988B1/fr active Active
-
2023
- 2023-11-13 CN CN202380078746.1A patent/CN120187982A/zh active Pending
- 2023-11-13 WO PCT/EP2023/081562 patent/WO2024104939A1/fr not_active Ceased
- 2023-11-13 EP EP23804701.3A patent/EP4619681A1/fr active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016109132A1 (de) * | 2016-05-18 | 2017-11-23 | Hella Kgaa Hueck & Co. | Scheinwerfer, insbesondere Scheinwerfer eines Kraftfahrzeugs |
| WO2020025171A1 (fr) | 2018-07-31 | 2020-02-06 | Valeo Vision | Module lumineux imageant la surface eclairee d'un collecteur |
| EP3708904A1 (fr) * | 2019-03-14 | 2020-09-16 | Valeo Vision | Dispositif lumineux imageant les surfaces eclairees d'au moins deux collecteurs |
| FR3093789A1 (fr) | 2019-03-14 | 2020-09-18 | Valeo Vision | Dispositif lumineux imageant les surfaces eclairees d’au moins deux collecteurs |
| DE112020000019T5 (de) * | 2019-07-11 | 2021-04-15 | Zhejiang Bicom Optics Co. | Zweistärkenlinsenmodul, Scheinwerfer und Fahrzeug |
| WO2022129426A1 (fr) * | 2020-12-18 | 2022-06-23 | Valeo Vision | Module d'éclairage pour véhicule automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN120187982A (zh) | 2025-06-20 |
| EP4619681A1 (fr) | 2025-09-24 |
| FR3141988B1 (fr) | 2024-10-18 |
| FR3141988A1 (fr) | 2024-05-17 |
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