EP2431657B1 - Module de réflecteur d'un phare de véhicule automobile - Google Patents

Module de réflecteur d'un phare de véhicule automobile Download PDF

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Publication number
EP2431657B1
EP2431657B1 EP11179902.9A EP11179902A EP2431657B1 EP 2431657 B1 EP2431657 B1 EP 2431657B1 EP 11179902 A EP11179902 A EP 11179902A EP 2431657 B1 EP2431657 B1 EP 2431657B1
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EP
European Patent Office
Prior art keywords
semiconductor light
light
light source
reflector
reflection module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP11179902.9A
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German (de)
English (en)
Other versions
EP2431657A3 (fr
EP2431657A2 (fr
Inventor
Christian Buchberger
Benjamin Stauss
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
Original Assignee
Automotive Lighting Reutlingen GmbH
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Filing date
Publication date
Application filed by Automotive Lighting Reutlingen GmbH filed Critical Automotive Lighting Reutlingen GmbH
Publication of EP2431657A2 publication Critical patent/EP2431657A2/fr
Publication of EP2431657A3 publication Critical patent/EP2431657A3/fr
Application granted granted Critical
Publication of EP2431657B1 publication Critical patent/EP2431657B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • 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
    • 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
    • F21S41/19—Attachment of light sources or lamp holders
    • 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
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated

Definitions

  • the invention relates to a reflection module of a motor vehicle headlight according to the preamble of claim 1.
  • Headlamps are beside lights a part of the lighting equipment. Headlamps are arranged in the front area of a vehicle and serve in addition to the traffic safety by visualizing the vehicle for other road users in particular the illumination of the road ahead of the vehicle, for example in the form of a low beam, high beam or fog light distribution and in the form of to certain ambient and / or driving situations customizable light distributions, such as bend light, cornering light, bad weather, city lights, country road, motorway light, etc., each to improve the driver's view. Headlamps comprise at least one light source in the form of an incandescent lamp, gas discharge lamp or semiconductor light source.
  • Semiconductor light sources can also emit infrared radiation invisible to the human eye, for example for a night vision system.
  • the headlights work, for example, according to a reflection principle as a so-called.
  • Reflection module wherein light emitted from the light source is reflected to produce a desired light distribution through a reflector on the road ahead of the vehicle.
  • the reflector is ellipsoidal or formed in an ellipsoid shape modified freeform; he can be faceted to it.
  • the headlights can also work according to a projection principle as a so-called projection module, light emitted by the light source after bundling by primary optics, for example in the form of a reflector and / or a so-called intent optical system, to produce a desired light distribution by secondary optics, eg in the form of a projection or condenser lens, is projected onto the roadway in front of the vehicle.
  • a projection module light emitted by the light source after bundling by primary optics, for example in the form of a reflector and / or a so-called intent optical system, to produce a desired light distribution by secondary optics, eg in the form of a projection or condenser lens, is projected onto the roadway in front of the vehicle.
  • Headlamps comprise a housing, wherein the housing is closed in a light exit opening by a transparent cover glass or plastic.
  • the cover pane can be designed as a clear pane without optically active profiles (for example prisms) or at least in regions with optically effective profiles (so-called diffusion pane).
  • At least one light module is arranged in the housing for generating one or more desired light distributions.
  • a specific light distribution can be generated by a single light module, but it can also be generated by superposition of the partial light distributions generated by a plurality of light modules. This is the case with headlamps which are equipped with semiconductor light sources.
  • the low-beam distribution can produce a broad illumination in front of the vehicle with a flat, horizontal bright-dark boundary.
  • the spot light distribution generates an increasing part of an asymmetrical light-dark border on the own traffic side as well as a stronger illumination in the middle of the road, so that the legal requirements better can be met.
  • the low-beam light distribution thus produced can be supplemented to form a high-beam distribution illuminating the entire roadway.
  • Lighting devices with semiconductor light sources can therefore, due to the superimposition of different partial light distributions generated in the illumination device, have a modular construction, wherein each partial light distribution can be generated by a separate light module.
  • This has the disadvantage, in particular in the case of headlamps, that a large number of light modules must be arranged in the headlight or in the front region of the vehicle in order to produce a complete range of legally required light distributions. This requires a lot of space in the already over-burdened by many other technical facilities front of the vehicle.
  • Desired light functions in particular in the upper class of vehicles, for example, light distributions that can be adapted to specific ambient and / or driving situations (for example curve light, cornering light, bad weather light, city light, country road light, motorway light) exacerbate the situation.
  • the object of the invention is therefore to reduce the number of light modules equipped with semiconductor light sources, in particular reflection modules, in the headlight and to allow the generation of different light distributions by a single light module.
  • a reflection module of a motor vehicle headlamp is proposed with the features of claim 1.
  • the reflection module has at least one semiconductor light source for emitting electromagnetic radiation, and at least one reflector for bundling and reflecting at least part of the emitted electromagnetic radiation for generating a desired radiation distribution on a roadway in front of the motor vehicle.
  • At least one first semiconductor light source has a main emission direction directed at a first region of the reflector.
  • the reflection module comprises at least one further semiconductor light source which has a main emission direction directed at a second region of the reflector arranged offset to the first region.
  • the at least one first semiconductor light source is arranged on a first contact surface within the reflection module and the one further semiconductor light source on a second contact surface within the reflection module.
  • the extension planes of the bearing surfaces span an angle not equal to 180 °.
  • the second bearing surface extends substantially horizontally and parallel to the direction of travel and the first bearing surface is inclined relative to the first, viewed in the direction of travel, to the rear, so that the main emission of the at least one first semiconductor light source has a counter to the direction of travel component and on the bearing surfaces arranged semiconductor light sources substantially completely separate subregions of the reflective surface of the reflector reach.
  • the at least one first semiconductor light source and the at least one further semiconductor light source emit in the main emission direction with the same opening angle.
  • the angle between the first bearing surface and the second bearing surface corresponds in a side view viewed at half the opening angle emitted by the semiconductor light sources in the main emission electromagnetic radiation.
  • the at least one first and the at least one further semiconductor light source radiate at least with their main emission direction on different regions of the reflector.
  • the different regions of the reflector can produce different distributions of electromagnetic radiation on the road ahead of the vehicle.
  • the invention is based on the idea of providing an arrangement of the at least one first and the at least one further semiconductor light source such that the respective semiconductor light sources reach such areas of the reflector at least with their main emission direction that at least two different distributions of electromagnetic radiation on the road ahead of the vehicle can be generated by the reflection of emitted by the semiconductor light sources electromagnetic radiation at the reflector.
  • Semiconductor light sources for example light-emitting diodes (LEDs) can emit visible light to the human eye. However, it may also be infrared radiation, for example, for a night vision system of the vehicle.
  • LEDs light-emitting diodes
  • each illuminated area of a reflection surface of the reflection module according to the invention generates a defined light distribution, e.g. the at least one first semiconductor light source is a dimmed light distribution and the at least one further semiconductor light source is a high beam distribution.
  • the design and shape of the reflector has an influence on the generated light distribution. Further information will follow later.
  • a combinable generation eg Low beam distribution and a high beam distribution in a reflector of a single equipped with semiconductor light sources reflection module is thus quite possible.
  • any other combinations of light distributions are also possible and can be easily realized in the reflection module.
  • the reflection module according to the invention therefore, the generation of at least two light distributions can be combined. This allows a significantly reduced number of reflection modules in the headlight. This makes the entire headlight more compact and lighter and cheaper to manufacture.
  • the reflection module according to the invention thus requires little space in the headlight, whereby the entire headlight can also be made compact and thus takes up little space in the front of the vehicle.
  • the combination of multiple light distributions in a single reflection module also leads to a reduction of the necessary light emission surface of the headlamp, which provides an extended space for a design of the headlamp or the outer front region of the vehicle.
  • the reflection surface of the reflector can begin at the second bearing surface and then initially extend over the second bearing surface and in the further course also over the first bearing surface in a curved shape.
  • a mutually offset positioning of the semiconductor light sources arranged thereon is produced in the reflector of the reflection module.
  • the at least one first and the at least one further semiconductor light source reach different regions of the reflector at least with their main emission direction.
  • the angled arrangement of the bearing surfaces relative to each other still supports this effect.
  • the aim is that arranged on the support surfaces semiconductor light sources substantially completely separate reflecting surfaces of the reflector reach.
  • possibly occurring unused areas on the reflection surface should be largely avoided. Minor overlaps can be tolerated.
  • the semiconductor light sources of a bearing surface are separately controllable in operation, so that the respective light distribution on and off, but also in their light intensity changeable, that is dimmable. It is therefore a purely electrical switching; On mechanical processes, such as are required. For example, in gas discharge lamps with a movement of the gas discharge lamp or the reflector can be advantageously dispensed with.
  • the reflection module according to the invention is extended by a secondary optics, for example.
  • a secondary optics for example.
  • the arrangement of the support surfaces and the shape of the reflector must then be adjusted according to the optical conditions in a projection module.
  • the inclination of the second bearing surface is designed to be particularly advantageous relative to the first bearing surface, so that the at least one first semiconductor light source can comfortably utilize the first region of the reflection surface.
  • the At least one further semiconductor light source radiates through the horizontal position of its support surface substantially in the vertical direction (due to the scattering at least with a pronounced vertical component) and thus essentially utilizes the second region of the reflection surface, which is arranged at the free end of the reflection surface.
  • the reflector is designed such that each subregion of the reflection surface generates a defined but different light distribution on the roadway.
  • light radiating onto the first subregion of the reflection surface with the correspondingly formed reflector shape can produce a low beam basic distribution with a substantially horizontal light-dark boundary, the second subregion of the reflection surface being designed such that the light distribution on the roadway complements a high beam which illuminates the entire roadway to the horizon. It is also possible that, for example, a complete high beam distribution is generated on the roadway over the first subregion of the reflection surface and the second subregion of the reflection surface of infrared emitting semiconductor light sources, for example for a night vision system, is illuminated.
  • the first bearing surface is substantially vertical and inclined relative to a vertical center plane to the side and relative to this second bearing surface mirror image arranged inclined to the other side, so that the main radiation directions of the at least one first semiconductor light source and the at least one further semiconductor light source, the center plane, lateral reflection portions of the reflector is directed.
  • a light distribution on the roadway can be generated, which in addition to the usual light distributions preferably areas Illuminates laterally of the vehicle. This may be, for example, a city light with an additional partial illumination of a walkway. The realization of a static cornering light is possible.
  • one side of the reflector generates a low-beam basic distribution with a substantially horizontal light-dark boundary and the second side generates the rising part of the bright-dark border on the driver's side and a stronger illumination in the middle of the road, so that both partial light distributions overlay to the resulting low beam.
  • This can advantageously be dispensed with the usual spotlight.
  • the reflector has a free form. Any light distribution generated by lighting equipment must comply with legal requirements, such as the ECE regulations of the Economic Commission for Europe, as they are relevant for the issue of a respective national type-approval.
  • the ECE Directive R1 defines standards for vehicle headlights.
  • the design of the light distribution is part of this directive.
  • the reflector of the reflection module according to the invention must be designed such that the respectively generated in the reflection module Light distribution complies with ECE guidelines.
  • the arrangement of the bearing surfaces in the reflection module is the basis for generating the corresponding light distribution. Based on this, the shape of the reflector, in particular the reflection surface, must design the required light distribution.
  • the free form of the reflector, or the reflection surface offers a large play or free space in the design of the reflection surface.
  • a mathematically easily definable shape of the reflection surface eg parabola, hyperbola, ellipse, etc.
  • modify the reflection surface with the aid of a computer simulation or calculation such that the reflector produces exactly the desired light distribution.
  • the position and the number of semiconductor light sources or their bearing surface The size of, for example, carrier elements and printed circuit boards for the semiconductor light sources must be taken into account. According to the reflection surface determined by the computer optimization, a prototype of the reflector can then be produced.
  • Optic arrays are functional groups of a plurality of semiconductor light sources, which are usually arranged together on a carrier element or a printed circuit board. All semiconductor light sources of an optical array are generally driven together, the individual semiconductor light sources can be controlled individually if required.
  • an optical array with at least one semiconductor light source can preferably be arranged on each support surface.
  • the reflection module combinable functions it is elementary to substantially separate the at least one of the first and the at least one further semiconductor light source illuminated reflecting surfaces, wherein a slight overlap without disturbing the light distribution is possible.
  • This can be realized with two possibilities:
  • at least one aperture can be provided between the at least one first semiconductor light source and the at least one further semiconductor light source, which delimits the emitted electromagnetic radiation of the respective semiconductor light sources.
  • the electromagnetic radiation emitted by at least one of the semiconductor light sources may be arranged with an optical attachment which consists of an optically transparent material.
  • the intent optics can, for example, break the light at a light entrance and at a light exit surface. It thus comes to a bundling of light.
  • the attachment optics can also reflect the electromagnetic radiation at interfaces of the attachment optics with the environment even after coupling the electromagnetic radiation into the attachment optics by total reflection and thus bundle it. This means that electromagnetic radiation emitted by the semiconductor light source is bundled in the attachment optics such that the radiation of the at least one first and the at least one further semiconductor light source does not substantially overlap on the reflection surface.
  • FIG. 1 shows an inventive light module of a motor vehicle headlight, which is designed as a reflection module 10, in a first embodiment in a longitudinal section.
  • the reflection module 10 comprises in FIG. 1 for example, two light sources 16 and 17 for emitting electromagnetic radiation, for example, visible to the human eye light.
  • the light sources are designed as semiconductor light sources, preferably as light-emitting diodes 16 and 17.
  • the light emitted by the light-emitting diodes 16 and 17 is concentrated by an optical system which, in the illustrated embodiment, is designed as a reflector 12.
  • the reflector 12 reflects light to produce a desired light distribution on the road ahead of the vehicle.
  • the reflector 12 is formed in a free form.
  • FIG. 1 shows an inventive light module of a motor vehicle headlight, which is designed as a reflection module 10, in a first embodiment in a longitudinal section.
  • the reflection module 10 comprises in FIG. 1 for example, two light sources 16 and 17 for emitting electromagnetic radiation, for example, visible to the human eye light.
  • a base 14 is arranged, which may be formed for example as a heat sink.
  • the base 14 has on its surface facing the reflector 12 on a first bearing surface 20, on the plane of extension of a support member 18 with the Light emitting diode 16 is arranged.
  • the base 14 has a second bearing surface 22, on the plane of extension of which a further carrier element 18 with the light-emitting diode 17 is arranged.
  • more than one light emitting diode 16 or 17 may be arranged on the bearing surfaces 20 and 22.
  • the support surface 20 and the support surface 22 are arranged at an angle not equal to 180 ° relative to each other on the base 14, wherein the support surface 22 is aligned substantially horizontally in the reflection module 10.
  • Optics arrays are functional groups of a plurality of light emitting diodes, which are usually arranged in a targeted manner on a carrier element or a printed circuit board. All light-emitting diodes of an optical array are generally driven to operate together, the individual LEDs can of course also be controlled individually if necessary. Changing the light intensity, ie dimming, is also possible.
  • In the reflection module 10 may preferably be arranged on each support surface 20 or 22 preferably an optical array. Of course, it is also possible to arrange a plurality of mutually separate optical arrays on each support surface 20, 22.
  • the light beam emitted by the LEDs 16 and 17 in the main emission direction has an aperture angle ⁇ .
  • This is preferably the same size for both light-emitting diodes 16 and 17. Due to the different arrangement of the light emitting diodes 16 and 17 on the two relatively angled bearing surfaces 20 and 22 while the light emitting diode 16 irradiates a portion 26 of a reflection surface 24 of the reflector 12, the light emitting diode 17 radiates a portion 28 of the reflection surface 24 at.
  • the angle between the support surface 20 and a horizontal preferably corresponds to half the opening angle ⁇ of the main emission of the light emitting diodes 16 and 17.
  • the reflection module 10 works as follows: Due to the different extending planes of extension of the two bearing surfaces 20 and 22 for the light emitting diodes 16 and 17 creates a mutually offset and angled positioning of the associated light emitting diodes 16 and 17, through the Hauptabstrahlraum the two reflective portions 26 and 28 of the reflection surface 24 on the reflector 12th form.
  • the two subregions 26 and 28 of the reflector 12 are designed in such a way that the light beams reflected by the subregions 26 and 28 each generate a defined, different light distribution on the roadway in front of the vehicle.
  • the two light-emitting diodes 16 and 17 are arranged on the support surface 20 or 22 such that substantially no overlapping of the light radiation emitted by the light-emitting diodes 16 and 17 occurs.
  • an additional aperture in FIG. 1 not shown, cf. FIG. 3 ) is arranged between the two bearing surfaces 20 and 22.
  • the light radiation of the light-emitting diode 16 to produce a dimmed light distribution on the roadway in front of the vehicle via the subregion 26 of the reflection surface 24, and the light radiation of the light-emitting diode 17 can be generated via the subregion 28 of the reflection surface 24
  • the high beam distribution can be generated, for example, solely by the light radiation of the light emitting diode 17 via the partial area 28, but it can also be supplemented by a superposition of the two light distributions generated by the partial area 26 and the partial area 28 to a high beam distribution.
  • the partial region 26 of the reflection surface 24 is also entirely possible, for example, for the partial region 26 of the reflection surface 24 to produce a low-beam basic distribution with a substantially horizontal light-dark boundary and the partial region 28 of the reflection surface 24 for the rising part of the driver's light-dark boundary and for greater illumination in FIG generates the center of the roadway, so that by overlapping the two light distributions a low beam distribution is generated, as required by law.
  • many further integrable combinations of different lighting functions are conceivable in the reflection module 10.
  • a narrow basic light combined by overlaying with a broad base light, which is then activated for different driving situations, such as city lights, country road, motorway lights, etc ..
  • the generation of cornering light would be possible with the present invention.
  • one of the light-emitting diodes 16, 17 is selectively activated and generates either static lighting on the right or on the left.
  • the luminous intensity that is to say the electrical supply power of the light-emitting diodes 16, 17, can be adapted accordingly.
  • a specially adapted shape of the reflection surface 24 in the corresponding subregions 26 and 28 is necessary.
  • a mathematically easily definable shape of the reflection surface for example parabola, hyperbola, ellipse, etc.
  • Such a trained reflector 12 is also referred to as free-form reflector.
  • FIG. 2 shows the reflection module 10 in a second embodiment in a longitudinal section along the optical axis of the light module 10.
  • the light-emitting diodes 16 and 17 are covered by the front optics 30 and therefore in FIG. 2 not visible.
  • the attachment optics 30 is arranged in the beam path of the respective light-emitting diode 16 or 17 and is made of an optically transparent material.
  • the attachment optics 30 break the light at a light entrance and at a light exit surface. It thus comes to a bundling of light.
  • the radiation is reflected at interfaces with the environment and thus bundled.
  • the bundling results in the radiation emitted by the light-emitting diode 16 or 17 being limited in its main emission direction in such a way that at least the radiations in the main emission direction of the light-emitting diodes 16 and 17 do not substantially overlap on the reflection surface 24. However, a slight overlap without disturbing the light distribution is possible. Besides, it is off FIG. 2 It can be seen that by the assignment of the attachment optics 30 to the LEDs 16 or 17 allow a closer distance of the two support surfaces 20 and 22 associated light emitting diodes 16 and 17.
  • the Front optics 30 combine the radiation emitted by the light emitting diodes 16 and 17 in such a way that, in spite of (compared to FIG. 1 ) closer spacing of the light-emitting diodes 16 and 17, or the attachment optics 30 to each other, on the reflector surface 24, a substantially unused small boundary region 32 is formed.
  • FIG. 3 shows the reflection module 10 in a third embodiment in a longitudinal section along the optical axis of the light module 10.
  • the light emitting diodes 16 and 17 associated at least in sections aperture elements 36, which show substantially to each other.
  • the aperture elements 36 serve to limit the opening angle of the main emission direction of the LEDs 16 and 17. This ensures that the respective light beams of the light-emitting diode 16 and 17 do not overlap and each light-emitting diode 16 and 17 thus the assigned portion 26 and 28 can be assigned to the reflection surface 24. It thus reaches no stray light in an unallocated portion 26 and 28 respectively.
  • FIG. 4 shows a fourth non-inventive embodiment of the reflection module 10 in a cross section.
  • the support surface 20 is substantially vertical and inclined relative to a vertical center plane 34 to the side and relative to this, the support surface 22 arranged mirror-inverted to the other side.
  • the respective main emission directions of the light emitting diodes 16 and 17, with respect to the center plane 34, are directed to lateral subregions 26 and 28 of the reflector 12 or the reflection surface 24. Since the light-emitting diodes 16 and 17 are associated with additional optics 30 here as well FIG. 3 the light-emitting diodes 16 and 17 covered by the attachment optics 30 and therefore not visible.
  • any desired light distribution on the roadway can be generated by a correspondingly adapted shape of the reflector 12 or of the reflection surface 24.
  • lateral areas on the roadway in front of the vehicle can preferably be illuminated. This may be, for example, a city light with an additional partial illumination of a walkway. The realization of a static cornering light is possible.
  • the usual low beam or high beam distributions - possibly by superposition of multiple light distributions - can be realized.
  • a complete high beam distribution is generated on the roadway via the subarea 26 and the subarea 28 is illuminated by infrared emitting semiconductor light sources arranged on the bearing surface 22 in order, for example, to operate a night vision system.

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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 (7)

  1. Module de réflexion (10) d'un phare de véhicule automobile, ledit module de réflexion (10) comprenant au moins une source de lumière à semi-conducteur (16, 17) destinée à émettre un rayonnement électromagnétique, et au moins un réflecteur (12) destiné à concentrer et à réfléchir au moins une partie du rayonnement électromagnétique émis pour générer une répartition souhaitée du rayonnement sur une chaussée devant le véhicule automobile, dans lequel au moins une première source de lumière à semi-conducteur (16) présente une direction principale d'émission dirigée sur une première zone (26) du réflecteur (12), dans lequel le module de réflexion (10) comprend au moins une autre source de lumière à semi-conducteur (17) qui présente une direction principale d'émission dirigée sur une deuxième zone (28) du réflecteur (12) qui est agencée de manière décalée par rapport à la première zone (26), et dans lequel ladite au moins une première source de lumière à semi-conducteur (16) est agencée sur une première surface d'appui (20) à l'intérieur du module de réflexion (10), et ladite une autre source de lumière à semi-conducteur (17) est agencée sur une deuxième surface d'appui (22) à l'intérieur du module de réflexion (10), caractérisé par le fait que les plans d'extension des surfaces d'appui (20, 22) définissent un angle non égal à 180° et que ladite deuxième surface d'appui (22) s'étend pour l'essentiel horizontalement et parallèlement à la direction de déplacement, et que la première surface d'appui (20), vue par rapport à la première, dans la direction de déplacement, est inclinée vers l'arrière de sorte que la direction principale d'émission de ladite au moins une première source de lumière à semi-conducteur (16) présente une composante dirigée à l'encontre de la direction de déplacement et que les sources de lumière à semi-conducteur (16, 17) agencées sur les surfaces d'appui (20, 22) atteignent des zones partielles (26, 28) pour l'essentiel complètement séparées les unes des autres de la surface de réflexion (24) du réflecteur (12), et que ladite au moins une première source de lumière à semi-conducteur (16) et ladite au moins une autre source de lumière à semi-conducteur (17) émettent dans la direction principale d'émission avec le même angle d'ouverture (α) et que l'angle entre la première surface d'appui (20) et la deuxième surface d'appui (22), vues dans une vue de côté, correspond à un demi-angle d'ouverture (α) du rayonnement électromagnétique émis par les sources de lumière à semi-conducteur (16, 17) dans la direction principale d'émission.
  2. Module de réflexion (10) selon la revendication précédente, caractérisé par le fait que le réflecteur (12) présente une forme libre.
  3. Module de réflexion (10) selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'il y a une pluralité de premières sources de lumière à semi-conducteur (16) et/ou une pluralité d'autres sources de lumière à semi-conducteur (17) qui sont respectivement regroupées pour former au moins un réseau optique.
  4. Module de réflexion (10) selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'au moins un obturateur (36) est prévu entre ladite au moins une première source de lumière à semi-conducteur (16) et ladite au moins une autre source de lumière à semi-conducteur (17).
  5. Module de réflexion (10) selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'une optique auxiliaire (30) est agencée dans le trajet des rayons du rayonnement électromagnétique émis par l'une au moins des sources de lumière à semi-conducteur (16, 17).
  6. Module de réflexion (10) selon l'une quelconque des revendications précédentes, caractérisé par le fait que le rayonnement électromagnétique émis par l'une au moins des sources de lumière à semi-conducteur (16, 17) est de la lumière visible à l'oeil humain ou du rayonnement infrarouge.
  7. Module de réflexion (10) selon l'une quelconque des revendications précédentes, caractérisé par le fait que ladite au moins une première source de lumière à semi-conducteur (16) et ladite au moins une autre source de lumière à semi-conducteur (17) sont conçues en tant que diode électroluminescente.
EP11179902.9A 2010-09-17 2011-09-02 Module de réflecteur d'un phare de véhicule automobile Not-in-force EP2431657B1 (fr)

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Application Number Priority Date Filing Date Title
DE102010045847A DE102010045847A1 (de) 2010-09-17 2010-09-17 Refelxionsmodul eines Kraftfahrzeug-Scheinwerfers

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EP2431657A2 EP2431657A2 (fr) 2012-03-21
EP2431657A3 EP2431657A3 (fr) 2014-01-15
EP2431657B1 true EP2431657B1 (fr) 2019-05-08

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Publication number Publication date
CN102418894B (zh) 2015-11-04
EP2431657A3 (fr) 2014-01-15
EP2431657A2 (fr) 2012-03-21
CN102418894A (zh) 2012-04-18
DE102010045847A8 (de) 2012-05-24
DE102010045847A1 (de) 2012-03-22

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