EP3412963B1 - Dispositif composant transparent d'un module d'éclairage et module d'éclairage doté d'un tel dispositif composant transparent - Google Patents

Dispositif composant transparent d'un module d'éclairage et module d'éclairage doté d'un tel dispositif composant transparent Download PDF

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Publication number
EP3412963B1
EP3412963B1 EP18177056.1A EP18177056A EP3412963B1 EP 3412963 B1 EP3412963 B1 EP 3412963B1 EP 18177056 A EP18177056 A EP 18177056A EP 3412963 B1 EP3412963 B1 EP 3412963B1
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EP
European Patent Office
Prior art keywords
light
section
component arrangement
exit surface
reflecting
Prior art date
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Active
Application number
EP18177056.1A
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German (de)
English (en)
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EP3412963A1 (fr
Inventor
Daniel Rülke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Automotive Lighting Reutlingen Germany GmbH
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Automotive Lighting Reutlingen GmbH
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Publication of EP3412963A1 publication Critical patent/EP3412963A1/fr
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Publication of EP3412963B1 publication Critical patent/EP3412963B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F21S43/315—Optical layout thereof 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors

Definitions

  • the present invention relates to a transparent component arrangement of a lamp module according to the preamble of claim 1.
  • a component arrangement is from DE 10 2005 003 367 A1 known.
  • the invention also relates to a lamp module of a motor vehicle lamp which has such a component arrangement.
  • elongated light exit surfaces which shine as extended strips have been desired for some time.
  • An elongated light exit surface has a significantly greater length than height.
  • Such lights are, for example, in the front area of a motor vehicle for generating daytime running lights, a position or Parking light or a flashing light or used in the rear area of a motor vehicle to generate a rear light, a brake light, a flashing light or a reversing light.
  • Various options for realizing such an elongated light exit surface are known from the prior art. Important aspects for the design of such lights include inexpensive manufacture and assembly of the light as well as the most homogeneous possible illumination of the elongated light exit surface of the light.
  • a transparent component arrangement in which partial areas of a circular beam of rays are coupled into individual complex light guides and are each guided by these to an exit surface of the light guide. All light guides together thus form a redistribution section.
  • the exit surfaces of the light guides are arranged next to one another, each exit surface of a light guide forming a partial area of the light exit surface of the light module.
  • the problem with this known component arrangement is the configuration of the redistribution section with a large number of individually manufactured light guides and the complex structure of the individual light guides.
  • the assembly of the component arrangement, in particular the alignment of the individual light guides relative to the beam, as well as the attachment and mounting of the individual light guides are very complex and expensive.
  • the known component arrangement serves to generate a headlight function, for example a low beam with a horizontal light-dark border, and not a lighting function. For this reason, the exit surfaces of the light guides do not form a flat light exit surface either. In addition, remains Due to the complex courses of the individual light guides, the parallel course of the light rays of the bundle of rays to one another during the deflection in the redistribution section is not maintained, so that homogeneous illumination of the exit areas of the individual light guides and thus the entire light exit area can at best be realized with additional effort.
  • a transparent component arrangement for bundling and redistributing the light emitted by a light source to partial areas of a light exit surface of the lamp module for generating an elongated light distribution with a greater horizontal than vertical extent is known.
  • light emitted by a light source in a main emission direction with a Lambertian emission characteristic is coupled into the component arrangement via a coupling section and bundled by means of a bundling section to form a bundle of rays with parallel light rays.
  • the bundling section is implemented in the form of a transparent solid body with a circular cross section with respect to the main emission direction of the light source, so that it generates a beam with light beams running parallel to one another.
  • This bundle of rays emerges from the bundling section via an annular exit surface, so that the bundle of rays also has an annular shape.
  • the exit surface is divided into a number of equally large facet-like segments, with each facet directing a partial area (segment) of the beam onto a faceted light entry surface of an elongated transparent luminous element by means of refraction at the facet.
  • the length of the filament is significantly larger than its height.
  • the facets of the entry surface are arranged next to one another on a first longitudinal side of the luminous element. The opposite long side of the luminaire body forms the light exit surface of the luminaire module.
  • the light rays of the various partial areas of the beam that fall on the facets of the entry surface of the luminous element pass through the luminous element and strike different partial areas of the light exit area.
  • the light emerging from the luminous element via the various partial areas of the light exit surface then generates an elongated light distribution.
  • the redistribution section thus consists of several facets which divert subregions of the beam onto the various subregions of the light exit surface of the light module by means of refraction.
  • the known transparent component arrangement has the disadvantage that both the facets on the exit surface of the bundling section and the facets of the entry surface of the transparent luminous element have to be individually designed in a very complex manner so that the partial areas of the beam from the circular ring segment-shaped facets of the exit surface of the bundling section onto the above the longitudinal extension of the entry surface of the luminous element meet rectangular facets arranged distributed and the subregions of the light exit surface of the lamp module are illuminated as homogeneously as possible.
  • the present invention is based on the object of designing and developing a transparent component arrangement and a light module of the type mentioned at the outset in such a way that simple and inexpensive production and assembly, the most homogeneous possible illumination of the light exit surface and a light exit surface with a particularly low height can be achieved compared to their longitudinal extent.
  • the light source is preferably designed as a half-space radiator and comprises, for example, at least one light-emitting diode (LED).
  • the light source preferably emits light with an approximately lambertian emission characteristic in a main emission direction into a 180 ° half-space.
  • the bundle of rays bundled by the bundling section preferably has a circular cross section.
  • the beam it would also be conceivable for the beam to have a rectangular shape, for example with rounded corners. It is crucial that the light rays emitted by the light source with a relatively large emission angle are bundled through the bundling section into a bundle of rays with largely parallel light rays, which are then in a particularly simple but efficient manner within the scope of the present invention while maintaining the parallelism of the light rays with one another through the redistribution section in the corresponding partial areas of the light exit surface of the light module can be deflected.
  • the individual sections of the transparent component arrangement are designed as transparent solid bodies. They consist of a transparent material, in particular PC, PMMA or PMMI.
  • the coupling section and the bundling section are preferably designed as a single integral component. It is thus conceivable, for example, that this component is designed in the form of what is known as an attachment lens or TIR (total internal reflection) lens.
  • a front lens has a coupling-in section with a depression and several light entry surfaces in the area of this depression.
  • the light source mainly radiates its light into this recess and onto the entry surfaces.
  • a bottom of the recess extends at least in some areas perpendicular to a main emission direction of the light source and forms a first light entry surface.
  • the ancillary optics On a side opposite the first entry face, the ancillary optics have a first light exit face.
  • the first entry surface and / or the first exit surface can be curved in the manner of a lens. Light rays that enter the ancillary optics via the first entry surface and exit it again via the first exit surface are bundled, in particular collimated, by means of refraction.
  • an optical attachment comprises at least one second light entry surface, which is preferably aligned parallel or with a slight inclination at an angle to the main emission direction of the light source.
  • Light beams emitted by the light source at an angle to the main emission direction hit this entry surface and enter the ancillary optics from the side. There they first encounter totally reflective interfaces of the ancillary optics and are deflected by these onto at least one second light exit surface of the ancillary optics. This exit surface extends at least over part of the circumference of the first exit surface.
  • the light beams reflected from the boundary surfaces exit the ancillary optics parallel to the light beams exiting through the first exit surface via the second exit surface.
  • Light rays that enter the ancillary optics via the second entry surface and exit it again via the second exit surface are bundled, in particular collimated, by means of refraction and total reflection (TIR).
  • a lens in particular a plano-convex lens, can also be used to focus the light beams emitted by the light source.
  • One advantage of the present invention is that the transparent component arrangement is particularly simple and can therefore also be produced simply and inexpensively and that the parallel course of the light beams of the beam to one another is nevertheless maintained during the entire deflection in the redistribution section. As a result, the individual sub-areas of the light exit surface of the light module can be illuminated particularly homogeneously.
  • the coupling, bundling and redistribution sections are designed as a single integral component.
  • the entire transparent component arrangement is thus a solid body made of a transparent plastic material, in particular PC, PMMA or PMMI, educated. This has great advantages in terms of cost-effective production, since the entire transparent component arrangement can be produced in one production step.
  • the component arrangement can be produced, for example, by means of an injection molding process.
  • the coupling-in section has a rotationally symmetrical shape, with an axis of rotation being congruent with a main direction of emission of the light by the light source.
  • the bundling section has a rotationally symmetrical shape, with an axis of rotation congruent with a main direction of emission of the light by the light source.
  • the redistribution section of the transparent component arrangement preferably has a longitudinal extension along the light exit surface and perpendicular to a main emission direction of the light source.
  • the length of the redistribution section corresponds approximately to the length of the light exit surface with the sub-areas arranged next to one another, to which the deflected light beams of the sub-areas of the beam are deflected.
  • optically effective structures e.g. any lenses, cylinder optics, cushion optics, scatter optics, prisms, etc.
  • the reflective facets of the redistribution section deflect light incident on them by means of total reflection.
  • the facets can thus be designed as totally reflective boundary surfaces of the redistribution section designed as a transparent solid body. These surfaces can be produced with a high degree of accuracy in an injection molding process. Since the redistribution section of the transparent component arrangement has a very low height, which is in the range of a few millimeters (e.g. 2.5 mm), there is at best minimal material shrinkage when the injection-molded plastic part hardens, so that the transparent component arrangement and in particular the reflective facets of the Redistribution section can be produced with a particularly high level of accuracy.
  • the reflective facets of the redistribution section include first reflective surfaces, second reflective surfaces and third reflective surfaces.
  • the first reflective surfaces are designed to deflect the light beams from at least some of the partial regions of the beam in the direction of the second reflective surfaces, perpendicular to a main emission direction of the light source and along a longitudinal extension of the redistribution section.
  • the first reflection surfaces are arranged and aligned in the redistribution section in such a way that those that have entered the redistribution section Light rays from at least some of the partial areas of the beam impinge directly on the first reflection surfaces and are deflected by them.
  • the second reflective surfaces are designed to deflect light beams deflected by the first reflective surfaces in the direction of the corresponding third reflective surfaces, parallel to the main emission direction of the light source and perpendicular to the direction of the light beams deflected by the first reflective surfaces.
  • the third reflection surfaces are formed, light beams deflected by the second reflection surfaces in the direction of the corresponding partial areas of the light exit surface, perpendicular to the main emission direction of the light source, perpendicular to the direction of the light beams deflected by the first reflection surfaces and perpendicular to the direction of the light beams deflected by the second reflection surfaces redirect.
  • the light beams of the various partial areas of the beam bundle deflected by the first reflection surfaces can run in the redistribution section at the same height (viewed from above) but next to one another or (viewed from the front) one behind the other. This allows a particularly low overall height of the redistribution section in the range of only a few millimeters.
  • the light rays of a partial area of the beam strike at least one of the third reflective surfaces directly without hitting one of the first reflective surfaces or one of the second reflective surfaces beforehand.
  • the light rays of the partial area of the beam, which on the central partial area of the Light exit surface are deflected, so are not deflected at first reflective surfaces along the longitudinal extent of the redistribution section and perpendicular to the main emission direction of the light source, in order to then hit second reflective surfaces, which then deflect them in the direction of the third reflective surface.
  • the second reflective surfaces which deflect the light beams propagating in the redistribution section in the direction of the third reflective surfaces, have a differently large distance from the first reflective surfaces, corresponding to a distance between the corresponding subregions of the light exit surface to which the second reflective surfaces are assigned Third reflective surfaces deflect the light beams to the central partial area of the light exit surface.
  • the third reflective surfaces which deflect the light beams coming from the second reflective surfaces assigned to them in the direction of the corresponding decentrally arranged subregions of the light exit surface, have a different distance from the first reflective surfaces, corresponding to a distance between the corresponding subregions of the light outlet surface, onto which the third reflective surfaces assigned to the second reflective surfaces deflect the light beams to the central partial area of the light exit surface.
  • the distance from the second and third reflective surfaces to the first reflective surfaces is greater, the further away that portion of the light exit surface onto which the second and third reflective surfaces deflect light rays is located from the central portion of the light exit surface.
  • a light beam that strikes approximately the middle of the first and second reflective surfaces covers a path on its way from a first to a second reflective surface that is roughly the distance from the center of that part of the light exit surface on which the Light beam is deflected over the second and third reflection surfaces, corresponds to the center of the central portion of the light exit surface.
  • the redistribution section can be designed as a flat plate, the light exit surface then having a straight longitudinal extension.
  • the various reflection surfaces are preferably flat and have an inclination of 45 ° with respect to the light rays impinging on them, so that the light rays striking the reflection surfaces are each deflected by 90 ° by the reflection surfaces.
  • the redistribution section it would also be conceivable for the redistribution section to be designed to be curved about an axis parallel to the direction of the light beams deflected by the third reflection surfaces in the direction of the corresponding subregions of the light exit surface.
  • a lamp module of the type mentioned at the outset which has a transparent lamp module according to the invention Has component arrangement.
  • a lamp module can be used to generate an elongated light distribution with a greater horizontal than vertical extent.
  • the light distribution is used in particular to implement any lighting function, for example a daytime running light, a flashing light, a position or parking light, a rear light, a brake light or a reversing light.
  • light sources are used that emit light of a certain color (e.g. white, yellow, red). It would also be conceivable to use light sources that can each emit light of different colors (e.g.
  • RGB LEDs so-called multicolor or RGB LEDs so that they emit light of a certain color depending on a corresponding control of the light source in order to achieve a desired light distribution .
  • FIG 8 is a lighting device of a Motor vehicle in the form of a headlight designated in its entirety with the reference number 1.
  • the lighting device 1 could also be a rear light of a motor vehicle.
  • the headlight 1 is arranged and fastened in the front area of the body of a motor vehicle.
  • a lamp module of a motor vehicle lamp according to the invention is arranged in the headlight 1.
  • the lamp with the lamp module can also be arranged separately from the headlight 1 as an independent component with its own housing at the front, rear or side in or on a motor vehicle.
  • the light could be arranged as a raised third brake light in or on a trunk lid or behind a rear window of a motor vehicle.
  • the light could be arranged as a retrofittable daytime running light in the area of a front spoiler or on a bumper of the motor vehicle.
  • the headlight 1 has a housing 2 which is preferably made of plastic.
  • the housing 2 has a light exit opening 4 which is closed by means of a transparent cover plate 5.
  • the cover 5 is made of glass or plastic.
  • optically effective elements for example prisms or cylinder lenses
  • diffusion plate can be arranged at least in some areas in order to scatter the light passing through.
  • the cover plate 5 is designed without such optically effective elements (so-called clear plate).
  • a light module 6 is arranged in the interior of the housing 2.
  • the light module 6 can be used to generate any Serve headlight function or part thereof.
  • the light module 6 can serve to generate a low beam distribution, a high beam distribution, a fog light distribution or any adaptive light distribution or a part thereof.
  • a further light module 7 can be arranged in the housing 2. This is used, for example, to generate a further headlight function.
  • the light modules 6, 7 together generate the intended headlight function.
  • the light module 7 could generate a low beam basic light distribution with a relatively wide spread and a horizontal light-dark border.
  • the light module 6 could then generate a low-beam spot light distribution which, compared to the low-beam basic light distribution of the light module 7, is relatively highly concentrated and has an asymmetrical light-dark boundary on the top.
  • the asymmetrical light-dark boundary shows a higher course on the own traffic side than on the opposite traffic side.
  • a superposition of the basic light distribution and the spot light distribution results in a conventional low beam distribution.
  • further light modules for realizing other headlight functions are arranged in the headlight housing 2.
  • only one light module for example the light module 6 without the light module 7, can be arranged in the headlight housing 2.
  • At least one motor vehicle light with a light module 8 according to the invention is also arranged in the housing 2.
  • the light module 8 is used to generate at least one light function, for example a flashing light, a position light, a daytime running light, etc.
  • the lamp module 8 according to the invention is described below with reference to FIG Figures 1 to 7 explained in more detail.
  • the lamp module 8 is shown in various perspective views in Figures 4 and 5 shown. It comprises a light source 10, which is designed, for example, as a half-space radiator, in particular as a light-emitting diode (LED).
  • the light-emitting diode 10 comprises at least one LED chip, which in a main emission direction 11 emits light, preferably with a Lambertian emission characteristic, into a 180 ° half-space.
  • the luminaire module 8 also comprises a transparent component arrangement, which is designated in its entirety by the reference symbol 12.
  • the coupling-in section 13 preferably has a rotationally symmetrical shape, an axis of rotation preferably being congruent with the main emission direction 11 of the light by the light source 10.
  • the component arrangement 12 has a bundling section 14 which is designed to bundle the coupled-in light into a beam 19 with light beams running parallel to one another.
  • the bundle of rays 19 bundled by the bundling section 14 preferably has a circular cross section (cf. Figure 1 ).
  • the bundling section 14 can have a rotationally symmetrical shape, with an axis of rotation preferably congruent with the main emission direction 11 of the light by the light source 10 is.
  • the bundling section 14 is, for example, together with the coupling section 13, part of a TIR ancillary optics (cf. Figure 2 ).
  • a lens in particular a plano-convex lens, could also be used as an auxiliary lens.
  • the coupling section 13 and the bundling section 14 are designed as a single integral component.
  • this component is designed in the form of a so-called front lens or TIR (total internal reflection) lens made of a transparent material, in particular PC, PMMA or PMMI.
  • the optical attachment 13, 14 has a coupling-in section 13 with a recess 13a and a plurality of light entry surfaces 13b, 13c in the area of this recess 13a.
  • the light source 10 radiates its light mainly into this recess 13a and onto the entry surfaces 13b, 13c.
  • a bottom of the recess 13a extends at least in regions perpendicular to the main emission direction 11 of the light source 10 and forms a first light entry surface 13b.
  • the surface 13b is both part of the coupling-in section 13 and part of the bundling section 14.
  • the optical attachment 13, 14 On a side opposite the first entry surface 13b, the optical attachment 13, 14 has a first light exit surface 14b.
  • the first entry surface 13b and / or the first exit surface 14b can be curved in the manner of a lens. Light rays which enter the ancillary optics 13, 14 via the first entry surface 13b and exit the latter again via the first exit surface 14b are bundled, in particular collimated, by means of refraction.
  • an ancillary optics 13, 14 comprises at least one second light entry surface 13c, which extends through a wall of the Ancillary optics 13, 14 is formed which delimits the cylindrical or frustoconical recess 13a.
  • Light beams emitted by the light source 10 obliquely to the main emission direction 11 strike this entry surface 13c and enter the ancillary optics 13, 14 laterally. There they first encounter totally reflective boundary surfaces 14a of the optical attachment 13, 14 and are deflected by these onto at least one second light exit surface 14c of the optical attachment 13, 14. This exit surface 14c extends at least around part of the circumference of the first exit surface 14b.
  • the light beams reflected by the boundary surfaces 14a emerge via the second exit surface 14c parallel to the light beams exiting via the first exit surface 14b from the ancillary optics 13, 14.
  • Light rays that enter the ancillary optics 13, 14 via the second entry surface 13c and exit it again via the second exit surface 14c are bundled, in particular collimated, by means of refraction and total reflection.
  • the component arrangement 12 comprises a redistribution section which is designated in its entirety by the reference symbol 15.
  • the redistribution section 15 has several facets 20, 21, 22 (cf. Figures 4 and 5 ), which are formed, in each case a partial area 18 of the beam 19 (cf. Figure 1 ) on a sub-area 16 of a light exit surface 17 (cf. Figures 1 , 2 , 5 and 7th ) of the lamp module 8.
  • the redistribution section 15 preferably has a longitudinal extension along the light exit surface 17 and perpendicular to the main emission direction 11 of the light source 10.
  • a dashed line 14d is drawn in, which symbolizes an imaginary dividing plane between the bundling section 14 and the redistribution section 15.
  • the light exit surfaces 14b, 14c of the bundling section 14 are also only imaginary and within the transparent solid body of the transparent component arrangement 12 only form a transition for the light rays from the bundling section 14 into the redistribution section 15.
  • the redistribution section 15 is only shown schematically. However, as mentioned, it can also be an integral part of the shown integral component (front lens 13, 14), or it can be formed separately from it.
  • Figures 3a to 3c 12 show various other views of the transparent component assembly 12.
  • Figure 3a shows a view obliquely from above (against the direction of the y-axis in Figure 5 ),
  • Figure 3b a view from diagonally below and
  • Figure 3c a view from diagonally above.
  • the light emitted from the light exit surface 17 in the light exit direction 3 (cf. Figure 5 ) is used to implement the lighting function of the motor vehicle light.
  • the individual subregions 16 of the light exit surface 17 lie next to one another, so that an elongated light distribution with a greater horizontal than vertical extension results.
  • At least some of the facets, in the example shown here the facets 22, are assigned a certain partial area 16 of the light exit surface 17, onto which these facets 22 deflect light.
  • the facets 20, 21, 22 of the redistribution section 15 deflect the light incident on them by means of reflection (and not by refraction) and that the redistribution section 15 is formed by the individual reflective facets 20, 21, 22 partial areas 18 of the beam 19, which are divided by a subdivision of a cross section of the beam 19 (cf. Figure 1 ) by means of horizontal and / or vertical cutting planes 23, 24, which run parallel to the mutually parallel light rays of the bundle of rays 19 and parallel or perpendicular to each other, onto the subregions 16 of the light exit surface 17 assigned to them.
  • the parallel course of the light beams of the beam 19 to one another is maintained during the entire deflection in the redistribution section 15. This is explained in detail below.
  • the reflective facets 20, 21, 22 of the redistribution section 15 deflect light incident on them, preferably by means of total reflection.
  • the transparent component arrangement 12 is designed in the form of a transparent solid body made of plastic, for example PC, PMMA or PMMI.
  • the coupling-in section 13, the bundling section 14 and the redistribution section 15 are designed as a single integral component, i.e. the TIR ancillary optics 13, 14 and the redistribution section 15 are designed in one piece.
  • the one integral component has advantages in production, for example in the context of an injection molding process, since the entire component arrangement can be produced in one step.
  • the reflective facets of the redistribution section 15 include first reflective surfaces 20, second reflective surfaces 21 and third reflective surfaces 22.
  • the first reflective surfaces 20 are formed, the light rays from at least some of the partial areas 18 of the beam 19 in the direction of the second reflective surfaces 21, that is perpendicular to the Main emission direction 11 of the light source 10 and deflect along the longitudinal extension of the redistribution section 15.
  • the deflected light beams propagate parallel to one another in the transparent material of the redistribution section 15 in the direction of the second reflective surfaces 21.
  • the second reflective surfaces 21 are formed, light beams deflected by the first reflective surfaces 20 in the direction of the corresponding third reflective surfaces 22, i.e.
  • the light beams deflected by the second reflective surfaces 21 propagate parallel to one another in the transparent material of the redistribution section 15.
  • the third reflective surfaces 22 are designed to direct the light beams deflected by the second reflective surfaces 21 in the direction of the corresponding subregions 16 of the light exit surface 17, i.e. perpendicular to the Main emission direction 11 of the light source 10, perpendicular to the direction of the light beams deflected by the first reflection surfaces 20 and perpendicular to the direction of the light beams deflected by the second reflection surfaces 21.
  • FIG Figure 7 A corresponding configuration of the redistribution section 15 and the course of the light beams through the redistribution section 15 are shown in FIG Figure 7 for an exemplary drawn light beam 25, which strikes the various reflection surfaces 20, 21, 22 approximately in the middle.
  • the light beam 25 is one of many parallel light beams of the beam 19 which has been formed in the focusing section 14.
  • the beam 25 initially strikes a first reflective surface 20 in the redistribution section 15.
  • the reflective surfaces 20 are arranged in the redistribution section 15 in such a way that light rays from almost all subregions 18 of the beam 19 hit them.
  • first reflective surfaces 20 are provided which are at right angles to one another, each first reflective surface 20 being oriented at an angle ⁇ of 45 ° with respect to the parallel light rays entering the redistribution section 15.
  • An edge 20c, along which the two reflective surfaces 20 are in contact with one another, runs approximately centrally through the coupled-in beam 19, so that the subregions 18.2a, 18.3a, 18.4a, 18.5a, 18.6a of the beam 19 focus on the first Hit the reflection surface 20a and the subregions 18.2b, 18.3b, 18.4b, 18.5b, 18.6b of the beam 19 hit the other first reflection surface 20b.
  • the first reflection surfaces 20 therefore deflect a large part of the light beams that have entered the redistribution section 15 90 ° so that they propagate along the longitudinal extent of the redistribution section 15 until they hit one of the second reflection surfaces 21.
  • Such a second reflection surface 21 is shown in FIG Figure 7 drawn in as an example.
  • the reflective surface 21 is also oriented at an angle ⁇ of 45 ° with respect to the light beams deflected by the first reflective surface 20 (and thus generally also with respect to the main emission direction 11 of the light source 10). It again deflects the light beam 25 by 90 °, so that it is now directed against the main emission direction 11 of the light source 10.
  • the second reflective surfaces 21 have a precisely defined size, so that only those light rays of the beam 19 hit them that were previously deflected by one of the first reflective surfaces 20 and that originate from a specific sub-area 18 of the beam 19.
  • This specific sub-area 18 can be one of the sub-areas 18.2a, 18.2b, 18.3a, 18.3b, 18.4a, 18.4b, 18.5a, 18.5b, 18.6a, 18.6b, the light of which enters a decentralized sub-area 16.2a, 16.2b , 16.3a, 16.3b, 16.4a, 16.4b, 16.5a, 16.5b, 16.6a, 16.6b, the light exit surface 17 is deflected.
  • the second reflective surface 21 shown directs the incident light beam 25 in the direction of the third reflective surface 22, which here is arranged above the second reflective surface 21 assigned to it.
  • a light bundle from any partial area 18 is reflected on the reflection surfaces 20 and 21.
  • the parallel bundles of rays pass through different planes and are deflected by the reflection surfaces 22 into a common plane in which they emerge from the arrangement 12 via the exit surface 17.
  • Such a third reflection surface 22 is shown in FIG Figure 7 drawn in as an example.
  • their inclination about an axis that runs parallel to the light beams deflected by the second reflective surface 21 is rotated by 90 ° with respect to the inclination of the first and second reflective surfaces 20, 21.
  • the third reflective surface 22 again deflects the incident light beam 25 by 90 ° um, but both perpendicular to the direction of the light beams deflected by the first reflective surface 20 and perpendicular to the direction of the light beams deflected by the second reflective surface 21.
  • the light beam 25 deflected by the third reflective surface 22 strikes a specific sub-area 16 of the light exit surface 17 assigned to the third reflective surface 22.
  • the light beams deflected by the third reflection surfaces 22 propagate in a plane above or below the plane in which the light beams propagate along the longitudinal extension of the redistribution section 15.
  • the beam path described is also in Figure 2 in the sections 2 and 3 for the light rays of the subregions 18.6a, 18.6b (section 2) and 18.5a, 18.5b (section 3).
  • the light beams emitted by the light source 10 enter the transparent component arrangement 12 via the coupling section 13 and are bundled by the bundling section 14 to form the beam 19 with largely parallel light beams.
  • the light rays arrive from right to left into the redistribution section 15, where they first hit the first reflection surfaces 20.
  • the first reflection surfaces 20 deflect the light beams upwards or downwards with respect to the plane of the drawing.
  • the light beams deflected by the first reflective surfaces 20 then strike the second reflective surfaces 21.6a, 21.6b assigned to the partial areas 18.6a, 18.6b of the beam 19. These then deflect the incident light rays to the right with respect to the plane of the drawing, so that they strike the third reflection surfaces 22.6a, 22.6b assigned to the second reflection surfaces 21.6a, 21.6b. These deflect the light beams out of the plane of the drawing, so that they strike the corresponding subregions 16.6a, 16.6b of the light exit surface 17.
  • the light beams deflected by the first reflective surfaces 20 then strike the second reflective surfaces 21.5a, 21.5b assigned to the subregions 18.5a, 18.5b of the beam 19.
  • This third reflection surface 22.1 is, however, in the same horizontal plane in the redistribution section 15 arranged like the other third reflection surfaces.
  • the beam path described for the light beams of sub-area 18.1 of beam 19 is also shown in FIG Figure 2 shown in section 1.
  • the light beams emitted by the light source 10 enter the transparent component arrangement 12 via the coupling section 13 and are bundled by the bundling section 14 to form the beam 19 with largely parallel light beams.
  • the light rays arrive from right to left into the redistribution section 15, where they strike the third reflection surface 22.1 assigned to the partial area 18.1 of the beam 19. This deflects the light beams out of the plane of the drawing, so that they strike the corresponding central partial area 16.1 of the light exit surface 17.
  • the redistribution section 15 has a flat longitudinal extent, so that a straight, elongated light exit surface 17 results.
  • the redistribution section 15 it would also be conceivable for the redistribution section 15 to be designed to be curved about an axis which runs parallel to the direction of the light beams deflected by the third reflection surfaces 22 in the direction of the corresponding subregions 16 of the light exit surface 17.
  • a curved, elongated light exit surface 17 can be produced, the course of which follows, for example, an edge region of the housing 2 of the lighting device 1 or through which special design aspects can be implemented.
  • the reflective surfaces 20, 21, 22 are flat. It would be however, it is also conceivable that the reflective surfaces 20, 21, 22 are arched. Furthermore, it would be conceivable that the reflection surfaces 20, 21, 22 are not all inclined at a 45 ° angle with respect to the incident light rays (or with respect to the main emission direction 11 of the light source 10), but rather individual or all reflection surfaces 20, 21, 22 in are inclined at a different angle. In this way it could be ensured, for example, that the light beams propagating in the redistribution section 15 hit the reflective surfaces 21, 22 arranged downstream in the beam path if the redistribution section 15 is curved.
  • FIG. 6 a further embodiment of the invention is shown in which several of the above-described and in FIGS Figures 3 to 5 shown transparent component arrangements 12 are arranged side by side.
  • two identically designed transparent component arrangements 12.1, 12.2 are arranged next to one another in such a way that their light exit surfaces 17.1, 17.2 form a single, particularly elongated light exit surface.
  • Front sides of the redistribution sections 15.1, 15.2 directly adjoin one another.
  • the component arrangements 12.1, 12.2 arranged next to one another are preferably designed as a common integral component.
  • the component arrangements 12.1, 12.2 arranged next to one another do not necessarily have to be of identical design. It would also be conceivable, for example, that one of the component arrangements 12.1, 12.2 has a redistribution section 15 bent around the light exit direction 3 or that the component arrangements 12.1, 12.2 are bent differently.

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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)

Claims (15)

  1. Dispositif composant transparent (12) d'un module d'éclairage (8), le dispositif composant transparent (12) comprenant
    - une partie d'injection (13) qui est configurée pour injecter dans le dispositif composant transparent (12), de la lumière émise par une source lumineuse (10) suivant une direction d'émission principale (11),
    - une partie de collimation (14) qui est configurée pour collimater la lumière injectée en un faisceau de rayons (19) avec des rayons lumineux parallèles les uns aux autres, et
    - une partie de redistribution (15) pourvu de plusieurs facettes (20, 21, 22) qui sont configurées chacune pour rediriger une zone partielle (18) du faisceau de rayons (19) sur une zone partielle (16) d'une surface de sortie de lumière (17) du module d'éclairage (8), les zones partielles (16) de la surface de sortie de lumière (17) étant situées les unes à côté des autres et il en résultant ainsi une répartition allongée de distribution de lumière ayant une étendue horizontale plus grande que verticale, et au moins à quelques-unes des facettes (22), une zone partielle respective (16) de la surface de sortie de lumière (17) étant attribuée, sur laquelle ces facettes (22) redirigent de la lumière, les facettes (20, 21, 22) de la partie de redistribution (15) redirigeant par réflexion la lumière incidente sur elles, et la partie de redistribution (15) étant configurée pour rediriger, par les différentes facettes réfléchissantes (20, 21, 22), des zones partielles (18) du faisceau de rayons (19) qui résultent d'une division d'une section transversale du faisceau de rayons (19) à l'aide de plans de coupe horizontaux et verticaux (23, 24) qui s'étendent parallèlement aux rayons luminaux du faisceau de rayons (9) et parallèlement ou perpendiculairement les uns aux autres, sur les zones partielles (16) de la surface de sortie de lumière (17) associées à celles-ci, l'étendue parallèle les uns aux autres des rayons lumineux du faisceau de rayons (19) étant conservée pendant la redirection entière dans la partie de redistribution (15), les facettes réfléchissantes (20, 21, 22) de la partie de redistribution (15) comprenant des premières surfaces de réflexion (20) et des deuxièmes surfaces de réflexion (21), deux premières surfaces de réflexion (20) étant disposées à angle droit l'une par rapport à l'autre, chaque première surface de réflexion (20) étant orientée sous un angle α de 45° par rapport aux rayons lumineux parallèles entrant dans la partie de redistribution (15), caractérisé en ce qu'une telle deuxième surface de réflexion (21) est également orientée sous un angle β de 45° par rapport aux rayons lumineux redirigés par une première surface de réflexion (20) et qu'elle redirige les rayons lumineux (25) à nouveau de 90° de façon telle que ceux-ci soient maintenant orientés inversement à la direction d'émission principale (11) de la source lumineuse (10) et en ce que les deuxièmes surfaces de réflexion (21) ont une taille précisément définie, de façon qu'incident sur elles uniquement les rayons lumineux du faisceau de rayons (19) qui ont été redirigés auparavant par une des premières surfaces de réflexion (20) et qui sont originaires d'une zone (18) particulière du faisceau de rayons (19), et en ce que les facettes réfléchissantes (20, 21, 22) de la partie de redistribution (15) comprennent des troisièmes surfaces de réflexion (22) qui présentent également une inclinaison de γ = 45° par rapport aux rayons lumineux redirigés par la deuxième surface de réflexion (21) et redirigent les rayons lumineux incidents (25) à nouveau de 90°, cependant aussi bien perpendiculairement à la direction des rayons lumineux redirigés par la première surface de réflexion (20) que perpendiculairement à la direction des rayons lumineux redirigés par la deuxième surface de réflexion (21), si bien que des rayons lumineux (25) redirigés par la troisième surface de réflexion (22) tombent sur une zone partielle (16) de la surface de sortie de lumière (17) associée à la troisième surface de réflexion (22).
  2. Dispositif composant transparent (12) selon la revendication 1, caractérisé en ce que la partie d'injection (13) et la partie de collimation (14) sont formées en un seul composant intégral séparé de la partie de redistribution (15).
  3. Dispositif composant transparent (12) selon la revendication 1, caractérisé en ce que la partie d'injection (13), la partie de collimation (14) et la partie de redistribution (15) sont formées en un seul composant intégral.
  4. Dispositif composant transparent (12) selon l'une des revendications 1 à 3, caractérisé en ce que le faisceau de rayons (19) collimaté par la partie de collimation (14) présente une section transversale circulaire.
  5. Dispositif composant transparent (12) selon l'une des revendications 1 à 4, caractérisé en ce que la partie d'injection (13) présente une forme symétrique de rotation, un axe de rotation se recouvrant avec la direction d'émission principale (11) de la lumière par la source lumineuse (10).
  6. Dispositif composant transparent (12) selon l'une des revendications 1 à 5, caractérisé en ce que la partie de collimation (14) présente une forme symétrique de rotation, un axe de rotation se recouvrant avec la direction d'émission principale (11) de la lumière par la source lumineuse (10).
  7. Dispositif composant transparent (12) selon l'une des revendications 1 à 6, caractérisé en ce que la partie de redistribution (15) présente une étendue longitudinale le long de la surface de sortie de lumière (17) et perpendiculairement à la direction d'émission principale (11) de la source lumineuse (10).
  8. Dispositif composant transparent (12) selon l'une des revendications 1 à 7, caractérisé en ce que les facettes réfléchissantes (20, 21, 22) de la partie de redistribution (15) redirigent de la lumière incidente sur elles, par réflexion totale.
  9. Dispositif composant transparent (12) selon l'une des revendications 1 à 8, caractérisé en ce que les premières surfaces de réflexion (20) sont configurées pour rediriger les rayons lumineux d'au moins quelques-unes des zones partielles (18) du faisceau de rayons (19) en direction des deuxièmes surfaces de réflexion (21), perpendiculairement à une direction d'émission principale (11) de la source lumineuse (10) et le long d'une étendue longitudinale de la partie de redistribution (15), les deuxièmes surfaces de réflexion (21) étant configurées pour rediriger des rayons lumineux redirigés par les premières surfaces de réflexion (20) en direction des troisièmes surfaces de réflexion (22) correspondantes, parallèlement à la direction d'émission principale (11) de la source lumineuse (10) et perpendiculairement à la direction des rayons lumineux redirigés par les premières surfaces de réflexion (20), et les troisièmes surfaces de réflexion (22) étant configurées pour rediriger des rayons lumineux redirigés par les deuxièmes surfaces de réflexion (21) en direction des zones partielles (16) correspondantes de la surface de sortie de lumière (17), perpendiculairement à la direction d'émission principale (11) de la source lumineuse (10), perpendiculairement à la direction des rayons lumineux redirigés par les premières surfaces de réflexion (20) et perpendiculairement à la direction des rayons lumineux redirigés par les deuxièmes surfaces de réflexion (21).
  10. Dispositif composant transparent (12) selon la revendication 9, caractérisé en ce que les rayons lumineux d'une zone partielle (18.1) du faisceau de rayons (19) dont la lumière est redirigée par la partie de redistribution (15) sur une zone centrale (16.1) de la surface de sortie de lumière (17), arrivent directement sur au moins une des troisièmes surfaces de réflexion (22.1) qui redirigent les rayons lumineux de la zone partielle (18.1) en direction de la zone centrale correspondante (16.1) de la surface de sortie de lumière (17), sans que les rayons lumineux de la zone partielle (18.1) n'arrivent auparavant sur une des premières surfaces de réflexion (20) ni sur une des deuxièmes surfaces de réflexion (21).
  11. Dispositif composant transparent (12) selon la revendication 9 ou 10, caractérisé en ce que les deuxièmes surfaces de réflexion (21) qui redirigent les rayons lumineux se propageant dans la partie de redistribution (15) en direction des troisièmes surfaces de réflexion (22), présentent une distance différemment grande des premières surfaces de réflexion (20), correspondant à une distance des zones partielles (16) correspondantes de la surface de sortie de lumière (17) par rapport à une zone centrale (16.1) de la surface de sortie de lumière (17).
  12. Dispositif composant transparent (12) selon l'une des revendications 9 à 11, caractérisé en ce que les troisièmes surfaces de réflexion (22) qui redirigent les rayons lumineux venant des deuxièmes surfaces de réflexion (21) en direction des zones partielles (16) correspondantes de la surface de sortie de lumière (17), présentent une distance différemment grande des premières surfaces de réflexion (20), correspondant à une distance des zones partielles (16) correspondantes de la surface de sortie de lumière (17) par rapport à une zone centrale (16.1) de la surface de sortie de lumière (17).
  13. Dispositif composant transparent (12) selon l'une des revendications 1 à 12, caractérisé en ce que la partie de redistribution (15) est formée de façon courbée autour d'un axe parallèle à la direction des rayons lumineux redirigés par les troisièmes surfaces de réflexion (22) en direction des zones partielles (16) correspondantes de la surface de sortie de lumière (17).
  14. Module d'éclairage (8) d'une lampe d'un véhicule automobile, le module d'éclairage (8) comprenant une source lumineuse (10) pour émettre de la lumière dans une direction d'émission principale (11) et un dispositif composant transparent (12) pour collimater et rediriger la lumière émise par la source lumineuse (10) sur des zones partielles d'une surface de sortie de lumière (17) du module d'éclairage (8) pour engendrer une répartition de lumière allongée ayant une étendue horizontale plus grande que verticale, caractérisé en ce que le dispositif composant transparent (12) est configuré selon l'une des revendications 1 à 13.
  15. Module d'éclairage (8) selon la revendication 14, caractérisé en ce que la source lumineuse (10) comprend une source lumineuse semi-conductrice, notamment une diode électroluminescente (LED).
EP18177056.1A 2017-06-09 2018-06-11 Dispositif composant transparent d'un module d'éclairage et module d'éclairage doté d'un tel dispositif composant transparent Active EP3412963B1 (fr)

Applications Claiming Priority (1)

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DE102017112805.0A DE102017112805A1 (de) 2017-06-09 2017-06-09 Transparente Bauteilanordnung eines Leuchtenmoduls und Leuchtenmodul mit einer solchen transparenten Bauteilanordnung

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EP3412963B1 true EP3412963B1 (fr) 2020-12-23

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CN114046480A (zh) * 2021-12-13 2022-02-15 常州星宇车灯股份有限公司 一种厚壁件结构、发光装置及发光方式

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US5931576A (en) 1996-02-26 1999-08-03 North American Lighting, Inc. Optical coupler for distributive lighting system
US6036340A (en) * 1998-03-03 2000-03-14 Ford Global Technologies, Inc. Dimpled manifold optical element for a vehicle lighting system
DE102005003367B4 (de) * 2005-01-24 2009-05-07 Odelo Gmbh Leuchteinheit mit Lichtteiler
JP5440857B2 (ja) * 2010-03-05 2014-03-12 スタンレー電気株式会社 車両用灯具ユニット、及び、車両用灯具
FR2966224B1 (fr) * 2010-10-19 2012-12-14 Valeo Vision Dispositif d'eclairage ou de signalisation
DE102014218991A1 (de) 2014-09-22 2016-03-24 Automotive Lighting Reutlingen Gmbh Leuchte für ein Kraftfahrzeug

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DE102017112805A1 (de) 2018-12-13

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