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
  • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
  • F21S41/32—Optical layout thereof
• • 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
  • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
  • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
• • 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
  • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
  • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
  • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
  • B60Q1/1415—Dimming circuits
  • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
  • B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
• • 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
  • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
  • F21S41/338—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having surface portions added to its general concavity
• • 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
  • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape 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
  • F21S41/60—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
• • 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
  • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
  • B60Q2300/05—Special features for controlling or switching of the light beam
  • B60Q2300/056—Special anti-blinding beams, e.g. a standard beam is chopped or moved in order not to blind
• • 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
  • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
  • B60Q2300/40—Indexing codes relating to other road users or special conditions
  • B60Q2300/42—Indexing codes relating to other road users or special conditions oncoming vehicle

Definitions

• the invention relates to a lighting module for a motor vehicle headlamp, a module of the kind comprising at least one light source and optical means for forming a luminous pattern, or pixel, comprising a lighted area according to a light band. vertical bounded by two vertical edges.
• EP2278217 discloses a lighting module for a motor vehicle providing such a function that ensures, in the automotive field, a "partial road lighting mode".
• the light projector of the vehicle is equipped with several modules that give a light beam, including a road beam, consisting of several adjacent and adjacent vertical strips. By turning off one or more of these vertical stripes, it becomes possible to generate, in a road beam, one or more dark areas corresponding to places where oncoming vehicles are traveling or moving in front of the vehicle in question, so as to avoid dazzling other drivers while illuminating the road on both sides of vehicles that are crossed or in front.
• ADB Adaptive Driving Beam
• GFHB Glare Free High Beam
• the light beam consisting of several vertical bands is generally called "matrix beam".
• the pattern constituted by the light band is frequently referred to as "pixel”.
• the extinction of one or more strips of the light beam generally causes a loss of light above the oncoming vehicle, this which is inconvenient for driving.
• the extinction of at least one band of the beam can lead to a near loss of light and insufficient lighting on the nearby road part, which is also inconvenient for driving.
• matrix light sources including LEDs, whose beam is decomposed into a matrix of large number of areas that are illuminated independently (more than one around 100), the illumination of each zone being generated by at least one light source, usually two, one per projector.
• the object of the invention is, above all, to provide a lighting module which makes it possible, in a simple and economical manner, to construct projectors and lighting assemblies for a motor vehicle which, in most cases, can maintain above and / or below a crossover vehicle, or tracked, regardless of the context of the road on which the vehicles are moving.
• a lighting module for a motor vehicle headlamp is characterized in that the optical means are provided or arranged to also form at least one light strip transverse) to the vertical light band, with at least two transverse edges, so that the light pattern comprises at least one vertical band and at least one transverse band that are contiguous.
• the transverse light band is substantially at right angles to the vertical light band.
• the transverse light band originates at at least one of the ends of the vertical strip.
• the transverse light strip is advantageously located at the upper end of the vertical light strip and extends on the right or left side of the vertical strip, to form an inverted L turned to the right or to the left.
• the luminous pattern is composed of a vertical light band with, at each end of the luminous strip vertical, a transverse light band that extends in opposite directions, that is to say one to the left and the other to the right.
• the luminous pattern comprises a vertical light band, and on both sides of the upper end of the vertical light band, a horizontal light band.
• the luminous pattern may comprise a vertical light band with, at its upper end, a transverse light strip whose end remote from the vertical light band is contiguous with another vertical light band directed upwards.
• the light pattern comprises for example two vertical light bands and at least one transverse light strip, in particular horizontal.
• the transverse light band extends over a distance equal to the width of the vertical light band.
• the optical means for forming a pattern with at least one vertical light band and at least one transverse light band may comprise a reflector which receives light emitted by the source and reflects light to a projection device, in particular a lens, located in front of the light source.
• a projection device in particular a lens
• reflector a lower reflective portion being arranged in the lower part of the reflector, the profile of this reflective portion being modified to present, on one edge, a concave zone forward and curved towards the optical axis of the lighting module, the reflecting surface of this portion, facing the lens, being determined to create the transverse light band of the light pattern.
• the reflector may be of cylindrical or parabolic type.
• the optical means for forming a pattern with at least one vertical light band and at least one transverse light strip comprise an elliptical reflector which receives the light emitted by the source arranged at a first focus of the reflector, which reflects the light forward towards a second focus where is disposed a cache in a plane orthogonal to an optical axis of the lighting module, this cache having an opening whose shape corresponds to that of the light pattern that the lighting module must generate, and a focusing lens whose focus coincides with the second focus of the reflector.
• the light source is a light emitting diode. It may also be a laser source combined with a substrate carrying a phosphorus.
• the invention also relates to a motor vehicle headlamp comprising a first lighting module for forming, advantageously only, a vertical central light band, as well as at least a second lighting module comprising any one of the preceding characteristics to form on one side of this central light band formed by the first lighting module a light pattern with at least one transverse light band extending in one direction, and at least one third provided lighting module to form on the other side of the central light strip formed by the first lighting module a symmetrical light pattern of the pattern formed by the second lighting module relative to the central light strip formed by the first lighting module.
• the projector comprises at least five modules, namely a first lighting module for a central and vertical light band and, on each side of this first so-called central module, two modules, at least one of which provide light patterns with at least one transverse light band. More preferably, the projector comprises at least seven modules, namely a first lighting module for a central and vertical light band and, on each side of this first so-called central module, three modules, at least two of which provide light patterns with at least one transverse light band.
• the projector comprises nine modules, namely a first lighting module for a central and vertical light band and, on each side of this first so-called central module, four modules, at least three of which provide light patterns with at least one transverse light band.
• the invention also relates to a set of a right headlamp and a left headlight of a motor vehicle as defined above, characterized in that the right headlamp and the left headlamp are combined so that their beams combine and / or are superimposed so as to form a projected beam of light on the road taken by the vehicle.
• the orientation of the luminous patterns with at least one transverse strip with respect to the central light strip is in the opposite direction between the left and right headlights. This greatly improves the number of zones that can be independently illuminated with respect to a configuration in which the left and right headlights have the same distribution of light patterns.
• the invention described here makes it possible to maintain lighting above and / or below a crossed or tracked vehicle and to obtain a lighting system of a motor vehicle of the matrix type with a reduced number or content of light sources. .
• Fig. 1 is a diagram of a light beam of the "matrix beam" right side composed of several pixels formed by vertical strips and transverse strips according to the invention.
• Fig. 2 is a diagram of the beam of FIG. 1 with detection of projectors of a vehicle coming down in opposite direction.
• Fig. 3 represents the beam of the headlamp after extinguishing the annoying light strip for the oncoming vehicle.
• Fig. 4 illustrates, similarly to FIG. 3, a left side light beam and the pixels to obtain this beam.
• Fig. 5 illustrates the light beam of the projector on the right side of the vehicle while projectors of a vehicle coming in the opposite direction are detected in the upper part of the beam.
• Fig. 6 illustrates the beam on the right side of the vehicle after the extinction of pixels that could have caused discomfort to the vehicle coming from the other side.
• Fig. 7 illustrates, similarly to FIG. 5, the beam of the left side projector with detection of the projectors of the vehicle to cross.
• Fig. 8 illustrates the beam of the left side projector after extinction of the pixel may be inconvenient for the driver coming opposite.
• Fig. 9 illustrates the overall beam obtained by superposition of the right-hand beam of FIG. 6 and the left side beam of FIG. 8.
• Fig. 10 to 12 illustrate various possible pixel shapes.
• Fig. 13 illustrates a beam of light from a side projector left of the vehicle composed of pixels of the type according to FIG. 10.
• Fig. 14 illustrates inverted pixels for the right-side projector of the vehicle in combination with the beam of FIG. 13.
• Fig. 15 illustrates the right side beam obtained with pixels of FIG. 14.
• Fig. 16 illustrates the left-side light beam with one-pixel extinction, when an oncoming vehicle at substantially the same level is detected.
• Fig. 17 illustrates the right side beam, with extinction of two pixels, to avoid inconvenience to the driver coming in the opposite direction.
• Fig. 18 illustrates the overall beam of the vehicle obtained by superposition of the beam of FIG. 16 and the beam of FIG. 17.
• Fig. 19 illustrates the left side beam when a vehicle at half height comes in the opposite direction.
• Fig. 20 illustrates the right-hand beam for the same crossing conditions of a vehicle as in FIG. 19.
• Fig. 21 illustrates the overall beam obtained by superposing the left-hand beam of FIG. 19 and the right side beam of FIG. 20.
• Fig. 22 illustrates the left side beam obtained from the beam of FIG. 13, by extinguishing pixels likely to hinder the driver of a vehicle coming from the opposite direction from above.
• Fig. 23 is a diagram illustrating the right-hand beam for the same case of a vehicle coming in the opposite direction, at the top.
• Fig. 24 illustrates the entire beam obtained by superposition of the left-hand beam of FIG. 22 and the right side beam of FIG. 23.
• Fig. 25 illustrates another type of light beam obtained with pixels of the type of that of FIG. 12.
• Fig. 26 illustrates the beam according to FIG. 25 one band was turned off for crossing an oncoming vehicle at the bottom.
• Fig. 27 is a simplified perspective diagram of optical means for obtaining an inverted L-pixel illustrated in FIG. 29.
• Fig. 28 is a vertical section of the optical means of FIG. 27 with path of light rays.
• Fig. 29 is an illustration of the photometry of the pixel obtained with a module equipped with the optical means of FIG. 27 and 28.
• Fig. 30 illustrates, in simplified perspective, other optical means, with cache, for obtaining a pixel of the type of that of FIG. 1, and
• Fig. 31 is a schematic vertical section, passing through the optical axis, optical means of FIG. 30.
• FIG. 1 of the drawings can be seen schematically represented in the form of a rectangle light beam E1 provided by a motor vehicle headlight, including the projector located on the right side of the vehicle.
• the beam E1 preferably corresponds to a road beam whose range is several hundred meters, in particular of the order of 500 m.
• the beam E1 is obtained by means of several lighting modules, an embodiment of which will be described with reference to FIGS. 27 and 28, as well as another example with reference to Figs. 30 and 31.
• Each lighting module comprises at least one light source S (Fig. 27, 28 and 30, 31) and optical means O (Fig.27, 28) or O1 (Fig. 30, 31) to form a lighted area comprising a vertical light band 1 delimited by two sharp vertical edges.
• the optical means are provided to also form at least one transverse light strip 2, 3 according to FIG. 1, substantially at right angles to at least one of the ends of the vertical strip 1.
• the transverse edges of the strip 2 or 3 are relatively sharp, or totally net. They can in particular extend in a horizontal direction.
• the transverse light strips 2, 3 are provided at the upper end of the vertical light strip 1, and are respectively turned to the right and to the left of the vertical light strip 1.
• the beam E1 is obtained using nine modules.
• a central module gives a light band M1 formed by the vertical rectangular strip 1
• This central module otherwise called first lighting module can be arranged to form only a vertical light band.
• On the left side of the central module are provided four modules each producing a luminous pattern A1 .1 -A1 .4 which comprises a vertical rectangular light band 1 and, at its upper end, a transverse light strip 2 turned towards the right towards the motive central M1.
• the light pattern is continuous between the vertical light band 1 and the transverse light strip 2 so that this pattern has an inverted L shape.
• the width w1 of the vertical light band 1 is equal to the horizontal dimension w2 of the transverse light strip 2.
• the height h1 of the vertical light band 1 is equal to three times the height h2 of the transverse light strip 2 or 3.
• the A1.5-A1.8 patterns to the right are symmetrical to the left patterns relative to the central pattern M1.
• A1 .5-A1 .8 patterns thus have a horizontal light strip 3 turned to the left in the direction of the central pattern M1.
• the patterns of the nine modules are juxtaposed contiguous along the vertical edges of the vertical light bands 1, to give the beam E1.
• the beam is thus composed of bands having an elbow.
• the optical means for establishing the light pattern produced by each module are arranged and arranged so that the pattern M1 is located in the center of the beam E1 on the optical axis of the lighting module; the left neighbor A1 .1 pattern is placed, by the right edge of its vertical light band, against the vertical left edge of the M1 pattern, without leaving any space.
• the transverse light strip 2 of the pattern A1 .1 covers the corresponding upper zone of the vertical light strip 1, preferably without overflowing this band.
• the left pattern A1.5 is adjacent, without space, by the left edge of its vertical light band, with the right edge of the pattern M1.
• the transverse light strip 3 of the pattern A1.5 covers the upper end of the pattern M1, which can already be covered by the transverse light strip 2 of the pattern A1 .1.
• the other light patterns are arranged similarly so that their vertical light bands are contiguous with the vertical light bands of the surrounding patterns.
• the transverse light band of a pattern covers the upper end of the vertical light strip of the adjacent pattern closer to the central pattern M1.
• Each module is individually controlled by means not shown sensitive to the presence of one or more vehicles that may come in the opposite direction of the vehicle, or one or more vehicles traveling in the same direction but in front of the vehicle. These means sensitive are able to extinguish one or those modules whose light patterns can interfere with drivers coming in the opposite direction, or traveling in front of the vehicle. These means are generally sensitive to the light emitted by the headlamps P1, P2 ( Figures 2 and 3) of a vehicle coming in the opposite direction, or by the traffic lights of a vehicle traveling ahead. Other means sensitive to the presence of vehicles in the opposite direction or in front could be used such as radars, generally more expensive.
• a vehicle traveling in the opposite direction is detected in the low position, in a zone illuminated by the vertical light band of the pattern A1 .1 located immediately to the left of the central pattern M1 of the beam "matrix beam".
• the sensitive means control the extinction of the lighting module producing the pattern A1 .1 so that the beam E1 is modified as illustrated in FIG. 3 and has a band, or window, dark 4 in which is the vehicle coming in the opposite direction, which avoids the glare of its driver.
• the dark band 4 has a height less than the height of the beam E1 because the horizontal transverse portion 2 of the A1 .2 pattern, located immediately to the left of the A1 .1 removed pattern, allows to keep light above the vehicle coming from reverse.
• Fig. 4 is a diagram similar to that of FIG. 1 illustrating the definition of the projector located on the other side of the vehicle, that is to say located on the left side as far as FIG. 1 is the right side projector.
• the beam matrix beam E2 is composed of nine patterns from nine lighting modules, with a central pattern M2 consisting of a vertical light band 1, advantageously unique. On the left of the pattern M2 are provided three patterns A2.1, A2-2, A2.3 having a bend formed by a transverse light strip 3 turned to the left, the opposite side to the central pattern M2.
• the pattern A2.4 located at the left end of the beam E2 is constituted by a vertical light band 1.
• the four light patterns located to the right of the central pattern M2, and produced by four corresponding lighting modules, are symmetrical patterns on the left with respect to the central module M2. The right and left headlights of the vehicle are adjusted so that the beam E2 combines and / or superimposes the beam E1 of FIG. 1.
• a vehicle arrives in the opposite direction and is detected as illustrated in FIG. 5 by its headlights P1, P2 located in an area corresponding to the upper part of the pattern A1 .1 of FIG. 1, located immediately to the left of the central pattern M1, the lighting module producing the pattern A1 .1 is off, and the lighting module immediately to the left A1 .2 whose transverse light band 2 illuminated the upper part.
• the beam E1 as illustrated in FIG. 6, has a dark vertical band over the entire height of the beam.
• the transverse light strip 2 of the A1 .3 pattern remains above the strip 6, without disturbing the driver coming in the opposite direction, which improves the driver's vision of the vehicle equipped with the invention.
• the dark band 6 decreases the illumination of the road for the driver of the vehicle in question.
• the left projector whose initial beam E2 is illustrated in FIG. 7 gives, after detection of the oncoming vehicle, the modified beam E2 of FIG. 8 in which the pattern A2.1 of FIG. 4, located immediately to the left of the central pattern M2, is off. This results in a dark vertical band
• this pattern A2.2 can remain on without disturbing the oncoming driver.
• the combination or superposition of the beams of the right projector and the left projector, as shown in FIG. 9, provides a beam in which the dark band 6 of FIG. 6 is erased by the vertical light band of pattern A2.2 of FIG. 8, which improves the lighting of the road for the driver of the vehicle considered. Only the vertical band 7 surrounding the oncoming vehicle is dark.
• Figs. 10-12 illustrate other forms of light patterns or possible pixels for producing a lighting beam by juxtaposition of several reasons.
• the light pattern B comprises a vertical light band 1 having at its upper end a transverse light strip 2 extending to the right, and at its lower end a transverse light strip 3a extending at right angles to the left.
• the width w1 of the band 1 is equal, as in the case of FIGS. 1 and 4 above, to the horizontal extent w2, w3 transverse light bands 2, 3a.
• Pattern B looks like the letter S, in the form of a straight S.
• This form is particularly preferred.
• Fig. 1 1 illustrates another possible light pattern C corresponding substantially to a T shape.
• the pattern C comprises the vertical light band 1, in its central part.
• a transverse light strip 2 extending to the right and a transverse light strip 3 extending to the left are provided respectively on each side of the upper end of the strip 1.
• the transverse extent of the strips 2, 3 is equal to the width of the strip 1.
• Fig. 12 illustrates another possible form D for the pixel or light pattern.
• the pattern D comprises a vertical illuminated strip 1 a lower in height than the strips 1 of the previous patterns.
• a transverse light band 2 adjacent to the upper end of the band 1a extends to the right by a transverse distance w2 equal to the width w1 of the band 1a.
• a vertical light strip 1b adjacent to the right end of the transverse light strip 2 extends upwards.
• the vertical light band 1b is symmetrical with a vertical light band 1a with respect to the center of the transverse light band 2.
• the pattern can form an H or a cross "+".
• Fig. 13 illustrates a beam E3 obtained with a vehicle left-hand projector comprising nine lighting modules that generate the illumination patterns or pixels reproduced in exploded form below the beam E3.
• a central pattern M1 is formed by a vertical light band.
• the last motif on the left A1 .4 is composed of a vertical light strip having at its upper end a transverse light strip turned to the right in the direction of the central pattern M1.
• Patterns B1 .4-B1 .6 and A1 .8 located to the right of the central pattern M1 are symmetrical with the patterns to the left, with respect to this central pattern.
• optical means of each module are provided for juxtaposing the vertical light bands of the different patterns and to obtain the beam E3.
• Fig. 14 illustrates, in exploded form, the patterns or pixels of the right projector which gives the beam E4 of FIG. 15.
• the central pattern M2 is a vertical rectangular light band.
• On each side of this central pattern are provided three patterns, respectively B2.1 -B2.3 and B2.5-B2.7, inverted with respect to those of FIG. 13, that is to say that the B2.1 - B2.3 units to the left of the central pattern M2 correspond to the patterns B1 .4-B1 .6 located to the right of the central pattern M1 according to FIG. 13. It is the same for the right part of Fig. 14 and the left part of FIG. 13.
• the two pixels L2.4-L2.8 at the left and right ends of FIG. 14 are constituted by vertical rectangular light bands.
• the pattern B1 .1 of FIG. 13 is off so that the vehicle in the opposite direction is in a vertical dark band 8, which avoids the dazzling of its driver.
• the band 8 has a lower height than that of the beam E4 because the horizontal luminous band facing to the right of the neighboring pattern B1 .2 (Fig. 13) continues to illuminate the road above the reverse vehicle situated in the lower part. This lighting of the upper part improves the conditions for driving.
• Fig. 17 schematically illustrates the beam E4 modified to avoid glare of the driver coming in the opposite direction.
• the pattern B2.1 (Fig.
• Fig. 19-21 illustrate the modifications made to the beams of FIGS. 13 and 15 when a vehicle coming in the opposite direction is located substantially at half height, identified by its projectors P1, P2.
• Fig. 19 illustrates the modified beam E3 for the left projector. We find the configuration of Fig. 16.
• the beam configuration is different from that of FIG. 17 because only pattern B2.1 immediately to the left of central pattern M2 is off.
• the pattern B2.2, immediately to the left of B2.1 remains illuminated because its lower transverse light band is located below the vehicle coming in the opposite direction.
• Fig. 21 schematically illustrates the overall beam obtained by the superposition of the left and right beams of FIG. 19 and 20.
• the area 1 1 unlit in which the oncoming vehicle is located is between a high illuminated area corresponding to the upper transverse light band pattern B1 .2 of FIG. 13, and an illuminated low area corresponding to the lower transverse band of pattern B2.2 (Fig. 14) of the right projector.
• the illumination of the areas above and below the oncoming vehicle, respectively, is an improvement for the driver's visibility.
• Figs. 22-24 illustrate the case of an oncoming vehicle, at the top, as shown schematically by the projectors P1, P2, immediately to the left of the central pattern M1.
• the pattern B1 .1, located immediately to the left of the central pattern M1 is off, but also the pattern B1 .2 (Fig. 13) to the left of the pattern B1 .1, to prevent the area P1, P2 is illuminated by the upper transverse luminous band of pattern B1 .2.
• Fig. 23 illustrates the modification of beam E4 of the right projector.
• Pattern B2.1 (Fig. 14) located immediately to the left of central pattern M2 is off.
• pattern B2.2 to the left of pattern B2.1, remains illuminated and its lower transverse light band illuminates the area of the road below the oncoming vehicle.
• the vertical dark band 14 has a height less than that of the beam.
• Fig. 24 illustrates the overall beam obtained by superposition of the beams of FIG. 22 and FIG. 23.
• the dark band 13 of FIG. 22 disappeared.
• the oncoming vehicle is in the dark band 14 of FIG. 23, whose lower part is illuminated, which facilitates driving.
• Fig. 25 schematically illustrates a light beam E5 obtained with a projector comprising nine lighting modules giving the light patterns shown exploded at the bottom of FIG. 25.
• the central motif M3 remains constituted by a rectangular vertical luminous strip. To the left of this pattern are arranged four patterns D1-D4 similar to the pattern D of FIG. 12.
• the patterns D5-D8 to the right of the central pattern M3 are symmetrical with the patterns D1-D4 with respect to the central pattern.
• the beam E5, obtained by making the vertical edges of the lower part of the vertical light bands 1 a, join together has an upper part E5a which is narrower than its lower part E5b.
• the height of the lower zone E5b is equal to twice the height of the part upper E5a beam.
• the pattern D1 joined with the left edge of the central module M3 is off. The remaining patterns remain illuminated so that light is removed just around the oncoming vehicle in an area of sufficient height to avoid dazzling of the oncoming driver. A large illuminated area remains above the vehicle.
• Fig. 27 schematically illustrates, in perspective, optical means O of a lighting module for producing a luminous pattern or pixel, the simulated photometry of which is illustrated in FIG. 29, which represents the isolux curves corresponding to an illumination which decreases by central zone to the outside.
• the luminous pattern of Fig.29 comprises a substantially rectangular vertical light strip 1 and a transverse light strip 3 substantially horizontal and turned towards the left, like the patterns A1 .5-A1 .8 of FIG. 1.
• the light source S is formed in particular by an LED (light-emitting diode). It may also be a laser source directed towards a substrate carrying a phosphorus. The light rays are then formed by the activation of phosphorus by the laser source.
• the light emitted by the source S is directed towards a reflector 16, in particular parabolic or cylindrical, inclined from bottom to top towards the front.
• a reflector 16 At the lower part of the reflector 16 is disposed a reflecting portion which, on a portion 17 of its extent, from a longitudinal edge of the reflector 16, substantially extends the surface of this reflector.
• the portion 17 Towards its other end, the portion 17 is curved forwardly concave in a section 18.
• the reflecting surface of this section 18, facing forwards, is determined to obtain the transverse branch 3 of the pixel of FIG. 29, extending to the left of the vertical light strip.
• a focusing device consisting of a lens 19 having a convex front face and a substantially flat or slightly convex rearward rear face is disposed in front of the reflector 16.
• the focus of the lens 19 is in the vicinity of a cover 20.
• the beam of rays issuing from the lens 19, as illustrated in FIG. 28, essentially consists of parallel light rays. However, the light rays coming from the source S and falling on the section 18 are reflected towards the lower part of the lens and out of the latter in a rising direction to form the transverse light strip 3 of FIG. 29.
• a curved area, such as section 18, of the lower band of the reflector would be provided on the other edge of the portion 17.
• Fig. 30 and 31 illustrate schematically another embodiment of optical means 01 for producing the pixels or light patterns described above.
• optical means O1 comprise an elliptical reflector 16.1 open towards the front where there is a lens 19.1 for focusing the light beam.
• the light source S is located at a first focus F1 of the reflector 16.1.
• a cover 20 In the plane orthogonal to the optical axis and passing through the second focus F2 of the reflector 16.1 is disposed a cover 20 in which is provided an opening 21 whose shape corresponds to that of the pattern or pixel that the lighting module must generate.
• aperture 21 corresponds to a pixel with vertical band and right angle bend.
• the focus of the lens 19.1 coincides with the second focus F2 of the elliptical reflector, the optical axis of which is common to that of the lens 19.1.
• Fig. 31 is a vertical sectional diagram passing through the optical axis of the illumination module illustrating the path of light rays coming from the source S, reflected by the reflector 16.1 and refracted by the lens 19.1 to give a substantially parallel beam corresponding to the pattern wish. It is well understood that the configuration examples given to nine modules make it possible to generate from 18 light sources (1 source per module and per projector) a lighting beam including 15 zones which can be illuminated independently (configuration of FIGS.
• the invention makes it possible to produce a beam of the matrix type with superposition of the beams of the right projector and the left projector according to which, in most cases, light is kept above or below the crossed vehicle, or followed, which greatly improves the driving conditions compared to a vehicle equipped with juxtaposed vertical strip matrix projectors, while remaining of a design cost content.
• the upper, lower, upper, lower, left and right characters mentioned above are analyzed in relation to a vertical direction and on both sides of it.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Lighting Device Outwards From Vehicle And Optical Signal (AREA)

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• 2013
  • 2013-05-30 FR FR1354909A patent/FR3006421B1/fr active Active
• 2014
  • 2014-05-28 US US14/888,250 patent/US20160069528A1/en not_active Abandoned
  • 2014-05-28 EP EP14730474.5A patent/EP3003782A1/de not_active Withdrawn
  • 2014-05-28 JP JP2016516174A patent/JP2016522975A/ja active Pending
  • 2014-05-28 WO PCT/EP2014/061193 patent/WO2014191530A1/fr active Application Filing
  • 2014-05-28 CN CN201480031025.6A patent/CN105263755A/zh active Pending

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