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]
  • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
  • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
  • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
  • F21S41/141—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
  • F21S41/20—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
  • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
  • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
• • 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
  • 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. In particular, it relates to a lighting module.
• An object of the present invention is therefore to propose a lighting module making it possible to overcome all or part of the drawbacks cited.
• connection portion makes it possible to obtain homogeneous resulting lighting, i.e. not having shadow zones, typically directed in a horizontal direction, included in the area to be illuminated (these horizontal shadow zones being due to the junction between the different rows of light sources).
• the connection zone associated with a portion of the lower part creates, on the primary output diopter, a localized zone of deflection, in the vertical direction, of the light rays having passed through it.
• connection portion is located between the upper part and the lower part, that the upper part is at least mainly dedicated to the output of light rays from the upper row and that the lower part is at least mainly dedicated to the output of light rays from the lower row
• the connection portion constitutes either an output for a greater proportion of light rays coming from the upper row (compared to the lower row), or an output for a greater proportion of light rays coming from the lower row (compared to the upper row), or an output for an equal proportion of rays coming from the upper row and rays coming from the lower row.
• the homogeneous illumination due to the passage of certain light rays through the connecting portion will be either for a greater proportion for the first beam (compared to the second beam), or for a greater proportion for the second beam (compared to the first beam), or for an equal proportion for the first beam and for the second beam. It will therefore be possible to configure the connecting portion so as to obtain the effect of homogeneity of the lighting at the desired location on the road. In particular, if it is necessary due to a regulation that the light rays of a particular beam have not passed through the connecting portion, it will be possible to position the connecting portion accordingly.
• the connecting portion 5bc is convex, with the upper zone 7 exhibiting a change in inflection.
• At least 50% of the light rays coming from the lower row 2 are refracted on the lower portion 5bb.
• 70%, or even 90%, or even 99%, or even 100% of the light rays from the lower row 4 are refracted on the lower part 5bb.
• the connecting portion 5bc is positioned between the lower edge 11 and the upper edge 12 so as to keep the lower edge 11 integral with the upper edge 12.
• the upper edge 12 is downstream of the primary lens 5 relative to the lower edge 11 in the direction of the optical axis 6.
• the light sources of the upper row 1 may be 12 in number.
• the light sources of the lower row 2 may be 12 in number.
• the light sources of the upper row 1 may also be 1, 2, 3, 4, 5, 6, 8 or 10 in number.
• the light sources of the lower row 2 may be 1, 2, 3, 4, 5, 6, 8 or 10 in number.
• the second distance dist2 at the two lateral ends 13, 14, that is to say at the two positions of the upper edge and the lower edge furthest from the optical axis (these two positions being opposite with respect to the optical axis), is strictly less than the second distance dist2 at the optical axis 6.
• the second distance dist2 at the two lateral ends 13, 14 is between 0.2 mm and 0.4 mm.
• the second distance dist2 decreases between the optical axis 6 (where it can have a value of 1 mm) and the lateral ends 13, 14 (where it can have a value of 0.3 mm).
• the connecting portion 5bc comprises an upper zone 7 and a lower zone 8.
• the upper zone 7 is positioned so as to be adjacent to the upper part 5ba.
• the lower zone 8 is positioned so as to be adjacent to the lower part 5bb.
• the upper zone 7 and the lower zone 8 describe a curve.
• the upper zone 7 is configured so that at each point of the connection between the upper zone 7 and the lower edge 11, the tangents of the upper zone 7 and the lower edge 11 are equal (this is so that at the junction between the upper zone 7 and the lower edge 11 the resulting curvature has a smooth zone and therefore does not have a protruding angular part).
• the lower zone 8 is configured so that at each point of the connection between the lower zone 8 and the upper edge 12, the tangents of the lower zone 8 and the upper edge 12 are equal (this is so that at the junction between the lower zone 8 and the upper edge 12 the resulting curvature has a smooth zone and therefore does not have a protruding angular part).
• the connecting portion 5bc is rounded inwards.
• the upper zone 7 and the lower zone 8 each have a change in convexity.
• the connecting portion 5bc is rounded outwards.
• the upper zone 7 has a change in convexity.
• the primary lens 5 comprises an input diopter 5a.
• the input diopter 5a is linked to the upper output face 3b of the upper light guides 3 and to the lower output face 4b of the lower light guides 4.
• the upper part 5ba has, in a plane parallel to the first plane p1 and passing through the lower edge 11, a radius of curvature greater than or equal to 100 mm.
• the lower part 5bb has, in a plane parallel to the first plane p1 and passing through the upper edge 12, a radius of curvature greater than or equal to 100 mm.
• the curvature of the primary lens is greater (compared to the curvature of the lens at the optical axis) so as to maintain good light coupling.
• the entrance diopter 5a also has, in the first plane p1, a radius of curvature greater than or equal to 100 mm, so as to increase the compactness of the lighting module.
• the first beam is a cut-off beam of a dipped beam and the second beam is a main beam supplement.
• the module can also be used to form other lighting functions (and in particular a near-field beam of a dipped beam) via or outside those described above, in relation to the adaptive beams. It is thus possible to produce a lighting matrix to selectively illuminate parts of the space in front of the vehicle.
• the near-field beam of a low beam can also be called a "flat" beam for flat or spread beam. It is projected generally below the cut-off and is used to illuminate the near field in front of the vehicle.
• the low beam cut-off beam is used to define a cut-off zone.
• the combination of the near-field beams and the low beam cut-off beam makes it possible to at least partially define a low beam beam.
• the low beam cut-off beam is therefore configured to produce, in dipped beam mode, a portion of low beam with cut-off.
• the resulting angled portion is called the "kink" of the "dipped beam”.
• Low 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.
• a near-field beam from a dipped beam is typically a relatively spread projection laterally in front of the vehicle, mostly or completely below the horizon line, generally seeking a good distribution of illumination across the entire illuminated area.
• the invention can participate in a high beam function which 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 can have a slightly ascending optical axis of illumination for example.
• it can be used to generate a lighting function of the “complementary” type which forms a portion of a high beam complementary to that produced by a near-field beam, the high beam complement seeking entirely or at least mainly to illuminate above the horizon line while the near-field beam (which can have the specificities of a dipped beam) seeks to illuminate entirely or at least mainly below the horizon line.
• the high beam complement can therefore be a main part of the overall “high beam” beam and be associated with another beam participating in the dipped beam.
• the optical axis 6 and the direction d are orthogonal.
• the lighting module comprises an intermediate lens 10 and a projection lens 9.
• the intermediate lens 10 and the projection lens 9 are positioned along the optical axis so that the light rays from the rows of light sources intercept first the primary lens, second the intermediate lens and third the projection lens.
• the projection lens may be made of polymethylmethacrylate.
• the intermediate lens may be made of polycarbonate.
• the primary lens is preferably made of silicone.
• the entrance diopter of the primary lens is separated from the exit diopter of the projection lens by a distance of between 70 mm and 90 mm.
• the exit diopter of the primary lens is separated from the entrance diopter of the projection lens by a distance of between 50 mm and 60 mm. These distances are taken into account at the level of the optical axis 5.
• the intermediate lens and the projection lens may have a focal length of between 55 and 60 mm, preferably this focal length may be 58 mm (this distance being a fictitious distance calculated from the overall image/object magnification of the system composed of the intermediate lens and the projection lens).
• the field of view of the beam from the rows of the projection lens may be 35°.
• the primary lens and the intermediate lens have a size of 30 by 60 mm (taking into account the fixing zones).
• the projection lens may have a width of 45 mm and a height of between 30 mm and 40 mm (i.e. in the vertical direction).
• the overall projection lens of the system i.e. the overall projection lens consists of the assembly of several individual projection lenses
• the overall projection lens of the system may have a height of 30 mm and a width of between 100 and 120 mm.
• the upper light sources 1 are selectively ignitable individually.
• the lower light sources 4 are selectively ignitable individually.
• the LEDs of the lighting module can be selectively switched on or off so as to form the resulting lighting with the desired configuration.
• This configuration therefore makes it possible to control the brightness value according to the area considered.
• ADB for Adaptive Driving Beam
• a segmented beam is a beam whose projection forms an image composed of beam segments, each segment being able to be illuminated independently.
• emissive elements are necessarily simultaneously active, i.e. emissive of light.
• This function allows the shape of the beam to be modulated.
• a light source is not activated, its image, as projected by the optical module, will be zero. It then forms a lighting void in the resulting overall beam.
• This void is understood to include coupling phenomena at the source and the effects of stray light from the optics.
• the system 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 centers of two adjacent light sources may be 3 mm apart.
• the center of a light source in the upper row of sources and the center of a light source in the lower row of sources may be separated by a distance of between 2 mm and 4 mm.
• the light sources of the entire device can 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 size of the LEDs is directly linked to the size of the light pixels obtained and also linked to the desired beam volume. Furthermore, to have a large beam volume, it is also possible to add rows of LEDs.

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• 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)

Applications Claiming Priority (2)

Publications (1)

Family

ID=86468957

Family Applications (1)

Country Status (4)

Family Cites Families (8)

• 2023
  • 2023-03-01 FR FR2301904A patent/FR3146335A1/fr not_active Ceased
• 2024
  • 2024-02-13 WO PCT/EP2024/053555 patent/WO2024179821A1/fr not_active Ceased
  • 2024-02-13 EP EP24705611.2A patent/EP4673684A1/de active Pending
  • 2024-02-13 CN CN202480016151.8A patent/CN120813801A/zh active Pending

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