WO2024251987A1 - Unite lumineuse pour vehicule automobile - Google Patents
Unite lumineuse pour vehicule automobile Download PDFInfo
- Publication number
- WO2024251987A1 WO2024251987A1 PCT/EP2024/065805 EP2024065805W WO2024251987A1 WO 2024251987 A1 WO2024251987 A1 WO 2024251987A1 EP 2024065805 W EP2024065805 W EP 2024065805W WO 2024251987 A1 WO2024251987 A1 WO 2024251987A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- optical axis
- light sources
- row
- curvature
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0029—Spatial arrangement
- B60Q1/0041—Spatial arrangement of several lamps in relation to each other
-
- 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]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/322—Optical layout thereof the reflector using total internal reflection
-
- 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
-
- 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
-
- 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
- F21W2102/14—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 vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users
- F21W2102/145—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 vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users wherein the light is emitted between two parallel vertical cutoff lines, e.g. selectively emitted rectangular-shaped high beam
Definitions
- the present invention relates to the field of lighting, which includes signaling, and that of the organs, in particular optical organs, which participate therein. It finds a particularly advantageous application in the field of motor vehicles.
- it relates to a light unit for a motor vehicle, and to a light module for a motor vehicle comprising a plurality of light units.
- modules which are capable of emitting light beams, also called lighting and/or signaling functions.
- An object of the present invention is therefore to propose a module making it possible to overcome all or part of the drawbacks cited.
- a light unit for a motor vehicle comprising:
- the row of light sources comprising light sources aligned in a first direction, the light sources of the row of light sources being individually activatable,
- a primary lens comprising an optical axis, a first input face and an output face and
- a projection lens the light rays passing first through the primary lens and second through the projection lens, in which a plane is perpendicular to the first direction and includes the optical axis and
- the light unit is remarkable in that the support forms with the optical axis an angle other than 90° and in that the first input face comprises a flat upper portion, a flat lower portion and a connecting portion, the lower portion being offset relative to the upper portion along the optical axis, the upper portion and the lower portion being connected by the connecting portion.
- the first input face is an input face of the light rays emitted by the row of light sources.
- the output face is an output face of the light rays received by the first input face.
- the light unit according to the invention due to the positioning of a support inclined relative to the optical axis, makes it possible to obtain a configuration meeting the constraints of arrangement and size. Furthermore, given that this inclination of the support of the row of light sources is associated with a particular shape of the entrance face of the primary lens, the light unit according to the invention makes it possible to obtain lighting having sufficient homogeneity (and in particular not having a clear delimitation (in the area to be illuminated) between illuminated areas and less illuminated areas, unlike the light projection shown in Figure 3 which indicates, by the dotted frame, the positioning of the area representing a clear delimitation).
- the fact that the entrance face of the primary lens has an inclined connection portion (relative to the upper portion and relative to the lower portion) creates (at the connection portion) a local zone of deviation of the light rays having the consequence of creating a blurring at the projection of the light rays in question (the blurring being located at the junction between the illuminated zones and the less illuminated zones).
- the positioning of an inclined connection portion therefore makes it possible to compensate for the effect linked to the inclination of the support.
- the inclination of the support causes a difference (in terms of the resulting illumination) between the light rays being directed upwards and those directed downwards of the entrance face of the primary lens, this difference being due to the fact: 1) that the light rays being directed upwards are greater than those directed downwards of the entrance face of the primary lens and 2) that the part of the light sources from which the light rays directing downwards (from the entrance face of the primary lens) originate is not positioned at the same distance from the main focus object of the optical system comprising the primary lens and the projection lens as the part of the light sources from which the light rays directing upwards (from the entrance face of the primary lens) originate.
- the difference in question is manifested (on the projection area) by a clear delimitation (in the area to be illuminated) between the illuminated areas and the less illuminated areas (the illuminated areas being the result of the light rays having directed towards the top of the primary lens while the less illuminated areas being the result of the light rays having directed towards the bottom of the primary lens).
- the invention relates to a light module for a motor vehicle comprising a plurality of light units. nates, the light units being superimposed in a second direction, the light units sharing the same support, the second direction being perpendicular to the optical axis and to the first direction.
- the light module according to the invention makes it possible to obtain lighting characterized by a greater light intensity (or luminance) and also by more extensive lighting (in particular in height) than if the light module were composed of a single light unit.
- Another aspect is a vehicle equipped with at least one unit and/or module, preferably for emitting light towards the front of the vehicle. At least one module may equip a right side of the front face of the vehicle and at least one module may equip a left side of the front face of the vehicle.
- Figure 1 shows a sectional view of the light unit according to the invention where the entrance face of the primary lens can be observed.
- Figure 2 shows a sectional view of the light module according to the invention where the arrangement of the light units between them can be observed.
- Figure 3 shows schematically the projection at the front of a vehicle of a main beam supplementary lamp in the case where the entrance face of the primary lens is flat and where the support is inclined relative to the optical axis so that the light rays are more oriented towards the top of the entrance face of the primary lens than towards the bottom of the entrance face of the primary lens.
- Figure 3 indicates, by means of the dotted frame, the positioning of the clear delimitation zone.
- the first input face 5 receives the light rays 1a emitted by the row 1 of light sources.
- the upper planar portion 5a, the lower planar portion 5b and the connection portion 5c receive the light rays 1a emitted by the row 1 of light sources.
- the upper portion 5a is offset along the optical axis 4, relative to the lower portion 5b, to be closer to the exit face 7.
- the upper portion 5a is offset along the optical axis 4, relative to the lower portion 5b, to be further away from the exit face 7.
- the objective of positioning a connecting portion inclined relative to the upper portion and relative to the lower portion is to create a blurring at the level of the projection of the light rays having passed through this connecting portion, whatever the positioning of the upper portion relative to the lower portion, the desired technical effect will be obtained.
- the upper portion can be positioned upstream (or downstream) of the lower portion along the optical axis.
- the support 6 is inclined relative to the optical axis 4 so that the light rays 1a are more oriented towards the upper portion 5a than towards the lower portion 5b.
- This configuration makes it possible to obtain significant lighting (after the projection lens) oriented towards the area above the road, in order to obtain good visibility at this location.
- the optical system 10 has a main object focus F, the light sources of the row 1 of light sources being positioned relative to the optical axis 4 so that in the plane p their orthogonal projection on the optical axis 4 intercepts the optical axis 4 at the level of the main object focus F.
- the row 1 of light sources is positioned at the main focus object F, the image of the light rays (from the row 1 of light sources) by the optical system 10 will be at infinity. This configuration will thus make it possible to obtain a light beam resulting from this row of light sources projecting over a long distance.
- the light beam from this row may be a road supplement beam.
- the row 1 of light sources is crossed by the optical axis 4.
- the angle a is greater than 90° and less than or equal to 120°, and the connecting portion 5c is crossed by the optical axis 4.
- connection portion 5c is positioned at the level of the optical axis 4 in order to be able to create blurring at the junction between the illumination coming from the rays being directed towards the top of the entrance face of the primary lens and those being directed towards the bottom of the entrance face of the primary lens. It is considered that the emissive surface of each light source in row 1 is separated into two identical parts, one part called the "upper part” which is located above the other part called the "lower part".
- the angle a is greater than 120° and less than or equal to 135°
- the connecting portion 5c is offset relative to the optical axis 4 so as to reduce the size of the upper portion 5a.
- connection portion 5c it is thus necessary for the connection portion 5c to be positioned approximately at the level of the lowest zone of the entrance face of the primary lens where the rays directed towards the top of the primary lens will be directed in order to be able to create blurring at the junction between the illumination coming from the rays being directed towards the top of the entrance face of the primary lens and those being directed towards the bottom of the entrance face of the primary lens.
- the optical system 10 has a focal length DF, the length of the orthogonal projection in the plane p on the optical axis. tick 4 of the connecting portion 5c being proportional to the focal length DF by applying a proportionality factor between 0.02 and 0.03, preferably the proportionality factor is equal to 0.025.
- the upper portion 5a and the lower portion 5b are perpendicular to the optical axis 4.
- the first input face 5 has in the plane p a profile describing a sigmoid function.
- the exit face 7 comprises a first upper part 7a having, along the plane p, a first curvature 7ac, a central part 7b having, along the plane p, a fifth curvature 7bc and a first lower part 7c having, along the plane p, a second curvature 7cc and in which the projection lens 3 comprises a second entry face 8 comprising a second upper part 8a having, along the plane p, a third curvature 8ac and a second lower part 8b having, along the plane p, a fourth curvature 8bc, the first curvature 7ac being more convex than the fifth curvature 7bc and/or the second curvature 7cc being more convex than the fifth curvature 7bc and/or the fourth curvature 8bc being more convex than the third curvature 8ac.
- these configurations make it possible to obtain a greater spread, according to the planes perpendicular to the first direction d1 and parallel to the optical axis 4 (therefore according to the vertical direction), for the light rays having passed respectively through the first upper part 7a, the first lower part 7c, and the second lower part 8b in comparison respectively with those having passed through the central part 7b and the second upper part 8a.
- These configurations thus make it possible to obtain lighting having the desired extent.
- the curvature of the first upper part 7a also makes it possible, in the case of integration into the light unit producing a near-field beam of dipped beam, to obtain better recombination between the main beam supplement and the near-field beam of dipped beam.
- the light unit is configured to form or to participate in forming a segmented road auxiliary light.
- the light sources of row 1 of light sources of each of the light units 9a, 9b, ..., 9i are offset, in the first direction d1, relative to the light sources of rows 1 of light sources of all the other light units 9a, 9b, ..., 9i.
- This configuration therefore makes it possible to create a lateral offset (along the first direction d1) between the segments formed by a light unit relative to the segments formed by the other light units forming the light module.
- the fact that the light sources of all the rows 1 of light sources are offset from each other makes it possible to avoid dark areas that may appear between the projections of the segments resulting from the lighting of a group of light sources resulting from the row of light sources, this having the consequence of increasing the spatial resolution because the final size of the segments can thus be smaller.
- the terms relating to verticality, horizontality or transversality (or lateral direction), or their equivalents, are understood in relation to the position in which the light module is intended to be mounted in a vehicle.
- the terms “vertical” and “horizontal” are used in the present description to designate directions, following an orientation perpendicular to the plane of the horizon for the term “vertical” (which corresponds to the height of the modules), and following an orientation parallel to the plane of the horizon for the term “horizontal”. They are to be considered in the operating conditions of the module in a vehicle.
- a vertical axis is directed in the same direction as the gravity field.
- a horizontal axis is directed in a direction perpendicular to the direction of the gravitational field on the earth.
- the use of these words does not mean that slight variations about the vertical and horizontal directions are excluded from the invention.
- an inclination relative to these directions of the order of + or - 10° is here considered as a minor variation about the two preferred directions.
- the inclination is in principle between -5° and +4° and it is between -6° and +7.5° laterally.
- “Upper part (or portion)” means an area located more towards the top, in comparison with a “lower part (or portion)”.
- “central part (or portion)” means the part located between the “upper part (or portion)” and the “lower part (or portion)”.
- Crossing in the context of an element being crossed by an axis means that the axis passes through the element in question.
- the term “plane” in the context “the upper portion 5a and the lower portion 5b are planar” takes into account the fact that the upper portion 5a and/or the lower portion 5b may have on their surface a variability in their planarity which may reach a value of up to 100 ⁇ m.
- This variability in planarity is not uniform over the entire surface in question and may correspond to asperities forming reliefs on the surface in question and/or to hollow areas on the surface in question.
- This variability in planarity is measured relative to a reference plane.
- the reference plane for the upper portion 5a and for the lower portion 5b respectively correspond to the plane forming the upper portion 5a and to that forming the lower portion 5b respectively if these portions were planar.
- the upper portion 5a and/or the lower portion 5b may be characterized as being “pseudo-planar”.
- the vehicle light unit An automobile body comprises a row 1 of light sources, a primary lens 2, a projection lens 3 and a support 6.
- the row 1 of light sources emits light rays 1a.
- the row 1 of light sources comprises light sources arranged in a straight line in a first direction d1.
- the light sources of the row 1 of light sources are individually selected to be lit.
- the primary lens 2 comprises an optical axis 4.
- the primary lens 2 comprises a first input face 5 and an output face 7.
- the first input face 5 is an input face of the light rays 1a emitted by the row 1 of light sources.
- the light rays 1a are transmitted first by the primary lens 2 and second by the projection lens 3.
- the row 1 of light sources is secured to the support 6.
- a plane p is defined so as to be perpendicular to the first direction d1 and to include the optical axis 4.
- the optical system 10 comprises the primary lens 2 and the projection lens 3.
- the support 6 is inclined relative to the optical axis 4 and therefore forms with the optical axis 4 an angle a different from the right angle.
- the support 6 is therefore not perpendicular to the optical axis 4.
- the first input face 5 comprises a flat upper portion 5a, a flat lower portion 5b and a connecting portion 5c.
- the upper portion 5a and the lower portion 5b are joined via the connecting portion 5c.
- the first input face 5, and more particularly each of the flat upper portion 5a, flat lower portion 5b and connecting portion 5c, receives the light rays 1a emitted by the row 1 of light sources.
- the lower portion 5b and the upper portion 5a are not at the same position along the optical axis 4. If we consider that the optical axis 4 is a graduated axis, the abscissa of the lower portion 5b is different from the abscissa of the upper portion 5a. A bent junction zone therefore appears on the entrance face of the primary lens at the connection portion 5c.
- the face of the support 6 carrying the sources may be flat.
- the light sources are positioned on this face of the support 6, which may be directed, in the position of use, towards the top of the light unit.
- the support 6 may form with the optical axis 4 an angle a having a value of 100°.
- the light sources have an average emission direction oriented according to a normal to the face of the support 6 which carries them.
- the connecting portion 5c may be flat, concave or convex.
- the connecting portion 5c may have a flat part and a convex part or a flat part and a concave part or a convex part and a concave part.
- the connecting portion 5c may have a flat part, followed by a convex part, itself followed by a concave part.
- Row 1 of light sources may comprise 5 light sources.
- the exit diopter of the projection lens may be convex.
- the radius of curvature of the exit diopter of the projection lens may be large so that the exit diopter of the projection lens is similar to a plane.
- the light unit may have a width of 20 mm (along the first direction d1 ).
- the length of the row 1 of light sources may be 5 mm (along the first direction d1 ).
- the focal length of the optical system composed of the primary lens and the projection lens may be 10 mm.
- the thickness of the primary lens may be 6.5 mm.
- the thickness of the projection lens may be 6 mm.
- the diameter of the projection lens may be 20 mm.
- Row 1 of light sources only comprises light sources all aligned in direction d.
- the row 1 of light sources may be positioned at a distance of between 0.25 mm and 5 mm from the entrance face of the primary lens.
- the row 1 of light sources may be positioned at a distance of 1.3 mm from the entrance face of the primary lens.
- the light sources of row 1 of light sources can be activated in groups such that only certain light sources of row 1 of light sources are activated at a given time.
- the primary lens allows the shaping of the light rays from the row of light sources into a light beam.
- the projection lens allows the projection of the light rays shaped by the primary lens.
- At least one of the entrance face of the projection lens and the exit face of the projection lens may have on its surface reliefs having in particular a micrometric size.
- the term “reliefs having in particular a micrometric size” means a state of surface in particular on a diopter which comprises a set of projecting elements having in particular a depth of less than 600 pm. More precisely, this microstructure can be projecting over a depth in particular of less than 50 pm for the exit face and over a depth in particular of less than 600 pm for the entry face.
- This microstructure can comprise concentric patterns. The patterns can be striations or studs. The positioning of these reliefs makes it possible to standardize the beam.
- the support 6 can be made of Printed Circuit Board (PCB).
- PCB Printed Circuit Board
- the light sources of row 1 of light sources can be selectively turned on, thereby creating a pixelated light source.
- This configuration makes it possible to produce “ADB” lighting (for Adaptive Driving Beam). Indeed, selective activation of the light sources makes it possible to obtain varied light beam configurations to adapt to various situations. Thus, the areas that need to be lit will be lit and those whose brightness must be reduced to avoid dazzling other users and to comply with regulatory constraints will also be lit.
- a segmented beam is a beam whose projection forms an image composed of beam segments (resulting from the lighting of a group of light sources), each segment being able to be lit independently.
- emissive elements are necessarily simultaneously active, i.e. emissive of light.
- This function makes it possible to modulate the shape of the beam rendered.
- a light source is not activated, its image, as projected by the optical module, will be zero. It then forms a dark zone in the resulting overall beam.
- This void is understood to include coupling phenomena at the source and the effects of parasitic light from the optics.
- ADB lighting improves night driving conditions by allowing the driver to illuminate the road on which he is driving as much as possible without dazzling other road users.
- the resulting beam is formed by a plurality of juxtaposed segments that can be selectively and individually activated.
- the module only the segment likely to dazzle this user is switched off (the others remaining segments lit), which helps to optimize road lighting.
- the module according to the invention may comprise a unit for controlling the activation of each of the sources, configured to produce at least one dark zone forming a tunnel in a projected beam by deactivating a group of adjacent sources, the control unit being configured to determine the number of sources in the group corresponding to the dark zone as a function of the width dimension of the sources.
- the control unit may comprise a computer program product, preferably stored in a non-transitory memory, in which the computer program product comprises instructions which, when executed by a processor, make it possible to determine the sources to be activated, in particular to obtain at least one dark zone (in which the sources are not activated) of a determined surface taking into account the variable surface of the images of the elements.
- the light sources of the entire device may be light-emitting diodes, also commonly called LEDs.
- the LEDs of the entire lighting module have an emissive surface of 0.5 mm 2 or 1 mm 2 .
- the LEDs having an emissive surface of 0.5 mm 2 may have a height and width of 0.76 mm.
- the LEDs having an emissive surface of 1 mm 2 may have a height and width of 1 mm.
- the size of the LEDs is directly related to the volume of the desired beam.
- the distance between the centers of two consecutive LEDs of row 1 of light sources may be 1.025 mm.
- the spacing between two consecutive LEDs may be 25 pm.
- the primary lens and the projection lens are made of PMMA (polymethyl methacrylate), silicone, glass or PC (polycarbonate).
- the lower portion 5b may be upstream relative to the upper portion 5a along the optical axis 4.
- the lower portion 5b may be downstream relative to the upper portion 5a along the optical axis 4.
- the efficiency is better than in the case where the lower portion 5b is positioned forward relative to the upper portion 5a (along the optical axis 4).
- the center of the output face of the primary lens, through which the optical axis 4 passes, is the reference point for the positional offset between the lower portion 5b and the upper portion 5a along the optical axis 4.
- the orthogonal projection of the upper portion 5a on the optical axis 4 is closer to this center than that of the lower portion 5b.
- the orthogonal projection of the upper portion 5a on the optical axis 4 is further from this center than that of the lower portion 5b.
- the support 6 forms an angle a with the optical axis 4 so that the light rays 1a are directed more towards the upper portion 5a than towards the lower portion 5b.
- the optical system 10 has a main object focus F.
- the light sources of the row 1 of light sources are positioned relative to the optical axis 4 so that in the plane p their orthogonal projection on the optical axis 4 intercepts the optical axis 4 at the level of the main object focus F. More precisely, it is the center of the light sources which is positioned at the level of the main object focus F along the optical axis 4 by placing itself in the plane p.
- the row 1 of light sources is in contact with the optical axis 4.
- the row 1 of light sources can be crossed by the optical axis 4 at the center of the light source positioned at the center of the row 1 of light sources.
- connection portion 5c is located in contact with the optical axis 4.
- connection portion 5c is eccentric relative to the optical axis 4 so as to be positioned more towards the top of the light unit.
- the connecting portion 5c can be offset relative to the optical axis so as to be positioned at the highest point at the boundary between the first quarter and the second quarter of the first input face 5 (the first quarter corresponding to the quarter of the first first entry face 5 uppermost and the second quarter corresponding to the second quarter of the first entry face 5 uppermost).
- the optical system 10 has a focal length DF.
- the length of the orthogonal projection in the plane p on the optical axis 4 of the connecting portion 5c can be deduced from the focal length DF by applying a proportionality factor (to the length of the orthogonal projection in the plane p on the optical axis 4 of the connecting portion 5c).
- This proportionality factor can be between 0.02 and 0.03.
- the proportionality factor can be equal to 0.025.
- the upper portion 5a and the lower portion 5b are positioned orthogonally with respect to the optical axis 4.
- the first input face 5 has in the plane p a profile describing a sigmoid function.
- the first input face 5 describes a sigmoid function in which the ordinate axis and the abscissa axis are reversed.
- the sigmoid function (in the (xOy) frame) representing the first input face 5 thus undergoes a rotation in the trigonometric direction by a value of 90°.
- the outlet face 7 comprises a first upper part 7a, a central part 7b and a first lower part 7c.
- the intersection between the first upper part 7a and the plane p forms a curved line called “first curvature 7ac”.
- the intersection between the central part 7b and the plane p forms a curved line called “fifth curvature 7bc”.
- the intersection between the first lower part 7c and the plane p forms a curved line called “second curvature 7cc”.
- the projection lens 3 comprises a second entrance face 8 comprising a second upper part 8a and a second lower part 8b.
- the intersection between the second upper part 8a and the plane p forms a curved line called “third curvature 8ac”.
- the intersection between the second lower part 8b and the plane p forms a curved line called “fourth curvature 8bc”.
- the first curvature 7ac is more re-entrant than the fifth curvature 7bc.
- the second curvature 7cc is more re-entrant than the fifth curvature 7bc.
- the fourth curvature 8bc is more re-entrant than the third curvature 8ac.
- the light unit is configured to form or to participate in forming a segmented road auxiliary light.
- the light unit may comprise a secondary light unit configured to produce a range beam of a dipped beam.
- This type of beam overlaps the horizon line.
- the lower edge of this type of beam may be juxtaposed with the horizontal line located at -0.57°.
- the lower edge of this type of beam may slightly overlap the horizontal line at -0.57° so as to have good homogeneity with a near-field beam of a dipped beam and to avoid the formation of a dark zone in a final beam formed by the superposition of the range beam of the dipped beam and the near-field beam of the dipped beam.
- the range beam of a dipped beam may form a shoulder portion of the cut-off of a dipped beam. This shoulder portion is also called the kink portion of the dipped beam.
- Dipped beam type beams typically have a first lateral zone (normally on the edge of the roadway) projecting at a height slightly higher than in a second lateral zone (normally on the middle of the roadway), these two zones following each other laterally with the presence of a bend or elbow between them.
- the light unit may include another secondary light unit configured to produce a near-field beam of a low beam.
- the near-field beam of a dipped beam corresponds to a beam that can be considered as the base of a dipped beam.
- the near-field beam of a dipped beam is a wide beam whose highest part forms a horizontal upper cutoff that is located at 0° or below, for example at -0.57° below the horizon line.
- the near-field beam of a dipped beam is a wide beam in comparison to a range beam of a dipped beam.
- the lower edge of the segments forming the range beam of a dipped beam headlamp may be juxtaposed with the horizontal upper cut-off of the near field beam of a dipped beam headlamp.
- a main beam supplement has the function of illuminating the scene in front of the vehicle over a wide area, but also over a significant distance, typically around two hundred meters.
- This light beam due to its lighting function, is located mainly above the horizon line. It may have a slightly ascending optical axis of illumination for example.
- it may be used to generate a lighting function of the “complementary” type which forms a portion of a main beam complementary to that produced by a near-field beam of a dipped beam, the main beam supplement seeking entirely or at least mainly to illuminate above the horizon line while the near-field beam of a dipped beam (which may have the specificities of a dipped beam) seeks to illuminate entirely or at least mainly below the horizon line.
- the main beam supplement may therefore be a main part of the overall “main beam” and be associated with another beam participating in the dipped beam.
- the additional high beam can form, in combination with a near-field beam of the dipped beam, an overall high beam beam.
- a near-field beam of a dipped beam is typically a relatively spread projection laterally at the front of the vehicle, mainly or totally below the horizon line, generally seeking a good distribution of the illumination over the entire illuminated area.
- the light unit can also be used to form other lighting functions via or outside those described above, in relation to the adaptive beams. It is thus possible to produce a lighting matrix for selectively illuminating parts of the space in front of the vehicle.
- a light module for a motor vehicle comprises a plurality of light units 9a, 9b, ... , 9i.
- Each light unit 9a, 9b, ... , 9i of the plurality of light units 9a, 9b, ... , 9i comprises a separate row of light sources.
- the plurality of light units 9a, 9b, ... , 9i is positioned such that each row of light sources (of each light unit of the plurality of light units) is fixed on the same support 6.
- the light units 9a, 9b, ... , 9i are positioned such that a first light unit 9a, 9b, ...
- the light units composing the light module are offset in the vertical direction and also in the horizontal direction.
- each light unit is configured to form or to participate in forming a segmented road supplementary light
- the light module makes it possible to form or participate in forming a segmented road supplementary light composed of all the segmented road supplementary lights of each light unit making up the light module. All the segmented road supplementary lights of each light unit making up the light module are partly superimposed so that the resulting light intensity is greater and also so that the lighting is more extensive (in particular in height) than if the light module were composed of a single light unit.
- the light module makes it possible to produce lighting composed of a plurality of juxtaposed light segments that can be selectively activated.
- the light module may be composed of 5 light units.
- the light module comprises 25 light sources.
- the light module may have a height of 80 mm measured along an axis parallel to the direction in which the support 6 is inclined.
- the light module may have a height of 80 mm measured along an axis parallel to the direction in which the support 6 is inclined.
- the light sources of row 1 of light sources of each of the light units (9a, 9b, ..., 9i) are translated in the first direction d1 relative to the light sources of the other rows of light sources of all the light units.
- the translation in question may be equal to one sixth of a spacing between two consecutive light sources of the same row of light sources.
- the spacing between two consecutive light sources is measured between the center of one of the two light sources and the center of the other light source.
- the value of the translation of one sixth of the spacing between two consecutive light sources of the same row of light sources makes it possible to obtain homogeneous lighting in a direction parallel to the first direction d1 and therefore to avoid dark areas which may appear between the projections of the segments resulting from the lighting of a group of light sources resulting from the row of light sources.
- One or more light modules according to the invention may be arranged in a housing closed by a glass so as to obtain one or more lighting and/or signaling beams at the output of the projector.
- a projector may also be complex and associate several modules which may, in addition, possibly share components.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480038266.7A CN121336069A (zh) | 2023-06-08 | 2024-06-07 | 用于机动车辆的发光单元 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2305775A FR3149668A1 (fr) | 2023-06-08 | 2023-06-08 | Unité lumineuse |
| FRFR2305775 | 2023-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024251987A1 true WO2024251987A1 (fr) | 2024-12-12 |
Family
ID=87889909
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065806 Pending WO2024251988A1 (fr) | 2023-06-08 | 2024-06-07 | Module d'éclairage automobile matriciel imageant des sources lumineuses |
| PCT/EP2024/065805 Pending WO2024251987A1 (fr) | 2023-06-08 | 2024-06-07 | Unite lumineuse pour vehicule automobile |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065806 Pending WO2024251988A1 (fr) | 2023-06-08 | 2024-06-07 | Module d'éclairage automobile matriciel imageant des sources lumineuses |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN121311712A (fr) |
| FR (1) | FR3149668A1 (fr) |
| WO (2) | WO2024251988A1 (fr) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170336041A1 (en) * | 2016-05-17 | 2017-11-23 | Koito Manufacturing Co., Ltd. | Vehicle lamp |
| JP2017212170A (ja) * | 2016-05-27 | 2017-11-30 | 株式会社小糸製作所 | 車両用灯具 |
| EP3470727A1 (fr) * | 2017-10-13 | 2019-04-17 | Valeo Vision | Module d'éclairage formant un motif lumineux divisé en une portion supérieure aux bords verticaux nets et une portion inférieure aux bords verticaux floux |
| EP3505397A1 (fr) * | 2017-12-28 | 2019-07-03 | Stanley Electric Co., Ltd. | Phare de véhicule |
| JP2022028514A (ja) * | 2020-08-03 | 2022-02-16 | 市光工業株式会社 | 車両用前照灯 |
| WO2023006673A1 (fr) * | 2021-07-30 | 2023-02-02 | Valeo Vision | Module lumineux pour phare de vehicule |
| JP2023066006A (ja) * | 2021-10-28 | 2023-05-15 | 株式会社小糸製作所 | 車両用灯具 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2858042B1 (fr) | 2003-07-24 | 2005-09-23 | Valeo Vision | Module d'eclairage elliptique sans cache realisant un faisceau d'eclairage a coupure et projecteur comportant un tel module |
| DE102005041234A1 (de) * | 2005-08-31 | 2007-03-01 | Hella Kgaa Hueck & Co. | Scheinwerfer für Fahrzeuge |
| AT508604B1 (de) * | 2009-07-31 | 2012-07-15 | Zizala Lichtsysteme Gmbh | Led-kraftfahrzeugscheinwerfer zur erzeugung einer dynamischen lichtverteilung |
| US9162611B2 (en) * | 2012-01-03 | 2015-10-20 | J.W. Speaker, Corporation | Solid state steerable light |
| FR3074562B1 (fr) * | 2017-12-04 | 2020-11-20 | Valeo Vision | Dispositif d'eclairage emettant un faisceau lumineux a segments |
| FR3079473B1 (fr) * | 2018-03-30 | 2020-10-02 | Valeo Vision | Systeme d'eclairage interieur pour vehicule automobile |
-
2023
- 2023-06-08 FR FR2305775A patent/FR3149668A1/fr not_active Ceased
-
2024
- 2024-06-07 WO PCT/EP2024/065806 patent/WO2024251988A1/fr active Pending
- 2024-06-07 WO PCT/EP2024/065805 patent/WO2024251987A1/fr active Pending
- 2024-06-07 CN CN202480038264.8A patent/CN121311712A/zh active Pending
- 2024-06-07 CN CN202480038266.7A patent/CN121336069A/zh active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170336041A1 (en) * | 2016-05-17 | 2017-11-23 | Koito Manufacturing Co., Ltd. | Vehicle lamp |
| JP2017212170A (ja) * | 2016-05-27 | 2017-11-30 | 株式会社小糸製作所 | 車両用灯具 |
| EP3470727A1 (fr) * | 2017-10-13 | 2019-04-17 | Valeo Vision | Module d'éclairage formant un motif lumineux divisé en une portion supérieure aux bords verticaux nets et une portion inférieure aux bords verticaux floux |
| EP3505397A1 (fr) * | 2017-12-28 | 2019-07-03 | Stanley Electric Co., Ltd. | Phare de véhicule |
| JP2022028514A (ja) * | 2020-08-03 | 2022-02-16 | 市光工業株式会社 | 車両用前照灯 |
| WO2023006673A1 (fr) * | 2021-07-30 | 2023-02-02 | Valeo Vision | Module lumineux pour phare de vehicule |
| JP2023066006A (ja) * | 2021-10-28 | 2023-05-15 | 株式会社小糸製作所 | 車両用灯具 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN121336069A (zh) | 2026-01-13 |
| WO2024251988A1 (fr) | 2024-12-12 |
| FR3149668A1 (fr) | 2024-12-13 |
| CN121311712A (zh) | 2026-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2690352B1 (fr) | Système d'éclairage adaptatif pour véhicule automobile | |
| FR3047541B1 (fr) | Module d'eclairage automobile avec fonctions code et route combinees et une source lumineuse ajustable | |
| FR3012867A1 (fr) | Element optique primaire, module lumineux et projecteur pour vehicule automobile | |
| FR3055980A1 (fr) | Systeme optique pour faisceau lumineux pixelise | |
| EP3511608B1 (fr) | Module optique pour vehicule automobile | |
| WO2023006673A1 (fr) | Module lumineux pour phare de vehicule | |
| EP3030830B1 (fr) | Dispositif d'eclairage et/ou de signalisation pour vehicules automobiles | |
| EP3453946A1 (fr) | Module lumineux pour véhicule automobile, et dispositif d'éclairage et/ou de signalisation muni d'un tel module | |
| FR3019266A1 (fr) | Systeme d'eclairage pour vehicule avec reglage automatise | |
| WO2024251987A1 (fr) | Unite lumineuse pour vehicule automobile | |
| EP3502550A1 (fr) | Faisceau lumineux segmente realisant des fonctions d'eclairage | |
| FR3056695A1 (fr) | Dispositif d'eclairage pour vehicule automobile comportant un guide de lumiere | |
| WO2025132840A1 (fr) | Unite lumineuse pour vehicule automobile | |
| EP4639017A1 (fr) | Module d'eclairage pour vehicule automobile | |
| WO2024179826A1 (fr) | Module d'eclairage pour vehicule automobile | |
| WO2024179821A1 (fr) | Module d'éclairage | |
| WO2025168791A1 (fr) | Module lumineux | |
| WO2024251700A1 (fr) | Module d'eclairage pour vehicule automobile | |
| WO2023030808A1 (fr) | Module lumineux pour vehicule automobile | |
| WO2024175414A1 (fr) | Dispositif d'éclairage | |
| WO2024094536A1 (fr) | Dispositif d'éclairage | |
| WO2024133404A1 (fr) | Dispositif lumineux comprenant une pluralité de modules | |
| FR3077365A1 (fr) | Dispositif d'eclairage de la route a surface generatrice de caustique controlee formant un faisceau d'eclairage | |
| WO2024094529A1 (fr) | Dispositif d'éclairage | |
| FR3139881A1 (fr) | Module lumineux |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 24731979 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202547122655 Country of ref document: IN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024731979 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2024731979 Country of ref document: EP Effective date: 20260108 |
|
| ENP | Entry into the national phase |
Ref document number: 2024731979 Country of ref document: EP Effective date: 20260108 |
|
| ENP | Entry into the national phase |
Ref document number: 2024731979 Country of ref document: EP Effective date: 20260108 |
|
| ENP | Entry into the national phase |
Ref document number: 2024731979 Country of ref document: EP Effective date: 20260108 |
|
| ENP | Entry into the national phase |
Ref document number: 2024731979 Country of ref document: EP Effective date: 20260108 |