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WO2016074766A1 - Phare individuel pour véhicule automobile - Google Patents

Phare individuel pour véhicule automobile Download PDF

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Publication number
WO2016074766A1
WO2016074766A1 PCT/EP2015/002154 EP2015002154W WO2016074766A1 WO 2016074766 A1 WO2016074766 A1 WO 2016074766A1 EP 2015002154 W EP2015002154 W EP 2015002154W WO 2016074766 A1 WO2016074766 A1 WO 2016074766A1
Authority
WO
WIPO (PCT)
Prior art keywords
illumination
light
illumination surface
headlamp
individual
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.)
Ceased
Application number
PCT/EP2015/002154
Other languages
German (de)
English (en)
Inventor
Carsten Gut
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.)
Audi AG
Original Assignee
Audi AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Priority to ES15787474T priority Critical patent/ES2788708T3/es
Priority to EP15787474.4A priority patent/EP3218645B1/fr
Publication of WO2016074766A1 publication Critical patent/WO2016074766A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—Laser 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
    • F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element

Definitions

  • the invention relates to an individual headlight for a motor vehicle, having at least one light source for emitting at least a first and a second light beam, and having a first and a second controllable deflection element for respectively variably deflecting the first and the second light beam into a respective first and second light beam second solid angle range to a predetermined illumination surface. Corresponding to the respective solid angle regions on the illumination surface respective illumination areas, which are illuminated by the respective light beams.
  • the invention also relates to a motor vehicle with such a single headlight and a method for operating such a single headlight.
  • a light beam is used to run a predetermined illumination surface, so scan or scan, and thus illuminate.
  • the illumination surface can be excited to emit light.
  • the light beam is deflected variable via controllable deflecting elements, so that individual points of the lighting surface are traversed one after the other. Similarly, this is known from a screen of a cathode ray tube that is illuminated with an electron beam.
  • DE 10 2010 048 659 B4 discloses a lighting device of a motor vehicle with a light source, a micromirror arrangement, an absorber and at least one optical element.
  • light from the light source is incident on the micromirror arrangement and is reflected by the latter, depending on the configuration of the micromirror arrangement, on the absorber or on an optical element.
  • DE 10 2012 002 232 A1 describes an illumination device of a vehicle with laser light sources and with an optical system for setting a light distribution, wherein the laser light sources emit laser light of the colors red, green or blue.
  • the optics comprises two mirror systems with respective fixed or movable mirror elements.
  • the laser light sources are each assigned a mirror element of the first mirror system, by means of which the laser light is deflected onto the second mirror system in such a way that the laser light reflected by the second mirror system appears white.
  • DE 197 37 653 A1 describes a lighting device with a plurality of electronically controllable and switchable between two mirror settings micromirrors, which form a mirror surface, which is illuminated by a light source. By switching a part of the micromirrors, a light distribution of a light leaving a light exit opening can be varied.
  • WO 2014/121 315 A1 describes a headlight for motor vehicles.
  • the headlamp comprises a first group of at least two laser sources and a second group of at least two laser sources.
  • the first and the second group of laser sources each generate at least two light bands.
  • the light bands are directed to a light conversion means via a beam deflection means.
  • WO 2014/121 314 A1 discloses a headlight for a motor vehicle.
  • a modulated light beam is directed via a pivotable micromirror onto a light conversion means.
  • the light image generated at the light conversion means is projected onto a roadway. It is the object of the present invention to achieve an improved illumination of an environment of a motor vehicle.
  • the invention relates to an individual headlight, that is to say a single headlight, for a motor vehicle which has at least one light source for emitting a first and a second light beam. It Thus, at least two light beams are emitted by one or more light sources.
  • the individual headlight further comprises at least a first and at least one second controllable deflection element for respectively variably deflecting the first and the second light beam in a respective first and second solid angle range to a predetermined illumination surface. It can also be provided here more than two light beams, for example, three light beams, each with at least one deflection, so then the individual headlamp has at least three deflection.
  • the individual headlight for controlling the deflection elements may have a control unit.
  • the respective solid angle regions correspond to respective illumination regions on the illumination surface which are illuminated by the respective light rays.
  • the respective illumination area the illumination area is traversed, respectively scanned or scanned, and thus illuminated or illuminated by the light beams.
  • the light rays can also be pulsed.
  • the solid angle ranges can be determined by at least two respective extreme positions of the controllable deflection elements. In these as well as in a plurality of intermediate positions of the deflection elements, the respective deflection elements can then direct the respective light beams on the extreme positions and the intermediate positions assigned points in the respective illumination area. In the respective extreme positions of the respective light beam can be directed by the controllable deflection on the edge of the footprint.
  • the illumination surface has two edge areas and a central area, wherein the edge areas make up a large part of the illumination area.
  • the central area and the two border areas are disjoint, ie each different from each other without an overlap.
  • the two footprints both extend into the central area and furthermore each comprise only one, respectively different, of the two edge areas.
  • the central region which may for example comprise a center of the illumination surface, there is thus a respective part of the edge of the respective illumination regions.
  • the brightness in the central area is particularly greatly increased compared to the two edge areas, in particular by more than a factor of two.
  • the required minimum brightness values in a central region of the light distribution are also easier to achieve, so that the light source can also have a lower beam power and be designed to be weaker.
  • the light beams each have the same wavelength or wavelength distribution. This has the advantage that multiple light beams can be generated with only a single light source. Moreover, in the different areas, especially in the different edge areas, a uniform color of the light distribution is achieved.
  • the illumination surface comprises a surface of a, in particular fluorescent, converter element for converting the light beams into light of a different, larger wavelength.
  • the illumination surface comprises a transparent surface of the individual headlamp, in particular a surface of a disc and / or a surface of an optical lens of the individual headlamp.
  • the disc may for example be part of a front glazing of the individual headlamp.
  • an overlapping region of the illumination surface can be illuminated by the first light beam and the second light beam, wherein a first residual region of the illumination surface, which is different from the overlap region, can be illuminated by the first and not by the second light beam, and a second remaining region of the illumination surface, which is different from the overlap region and the first residual region, can be illuminated by the second and not by the first light beam.
  • the first and / or the second residual region corresponds in each case to a majority of the first or second solid angle range.
  • the overlapping area may preferably correspond to between 5 and 15% of the respective entire illumination areas or between 5 and 15% of the solid angle ranges or a solid angle range between 2.5 and 5 ° of at least one of the deflection elements. This has the advantage that a maximum brightness can be achieved in the central area or in the overlapping area by overlapping the illumination areas.
  • At least one of the two deflection elements is arranged more remote from one of the two edge regions than from the other edge region and the illumination region assigned to this deflection element comprises the edge region which is more remote from this deflection element. It can be maximized at a given geometric arrangement of lighting surface and deflecting the average distance between the deflector and associated footprint. Thus, the angular offset of the light beam can be reduced within the footprint. This has the advantage that the resolution in the central area is improved. This corresponds to the requirements for a light distribution for a motor vehicle.
  • the deflection elements each comprise at least one micromirror.
  • Micromirrors are usually operated resonantly or quasi-statically for beam deflection. Accordingly, in a peripheral region in which a direction of movement of a deflected beam must be reversed, very long residence times of the beam on the illumination surface generated. This is especially true for the resonant mode. Since the brightness of an irradiated area point is, according to Talbot's law, given by the intensity and the residence time of the beam at this surface point, the brightness in the middle of the illumination area is smallest and at the edge of the illumination area the largest. The factor between edge area and center is typically between 10 and 90 in the case of a micromirror.
  • micromirrors thus has the advantage that the brightness improvement in the central area is particularly high.
  • An average brightness can thus be increased in the central region by a factor of, for example, at least 10 and up to 90 in comparison to an average brightness in the edge regions per micromirror.
  • the light source comprises a semiconductor light source, in particular a laser diode and / or a light emitting diode. This has the advantage that the light beams are generated particularly efficiently and when using a laser diode particularly high luminance can be achieved.
  • the invention also includes a motor vehicle with a single headlight according to one of the described embodiments.
  • the invention also relates to a method for operating a single headlamp, ie a single headlamp, for a motor vehicle.
  • This comprises radiating a first and a second light beam through a light source. It also comprises a respective variable deflection of the first and the second light beam into a respective first and second solid angle range to a predetermined illumination surface by a first and a second controllable deflection element.
  • the illumination surface has two edge regions and a central region, and the edge regions make up a major part of the illumination surface.
  • the driving of the deflecting element can be effected for example by a control unit.
  • the method comprises illuminating respective illuminating regions corresponding to the respective solid angle regions on the illuminating surface, both of which extend into the central region and, moreover, each comprise only one of the two edge regions.
  • the illumination can be done by a departure of the respective illumination areas with the respective light beam.
  • Fig. 1 is a schematic representation of an exemplary
  • FIG. 2 shows a schematic representation of an exemplary light distribution on an illumination surface, as can be produced by a further exemplary embodiment of an individual headlight.
  • Fig. 1 shows a schematic representation of an exemplary embodiment of a single headlamp.
  • the individual headlamp 1 has a first light source 2 and a second light source 3, which are embodied identically here and emit, for example, monochromatic light of a predetermined wavelength, for example 450 nm, in the form of a first light beam 4 and a second light beam 5 as laser diodes.
  • the individual headlamp 1 also comprises a first and a second optical system 6, 7, which may each contain a plurality of optical components. In the present case, these are, for example, in each case a filter element 8, 9, a fixed deflection element 10, 11 and respective optical lenses 12, 13.
  • the individual headlight 1 further comprises a first controllable deflection element 14 and a second controllable deflection element 15. Finally, the individual headlight 1 comprises In the example shown, a fluorescent converter element 16 and here also a converging lens 17.
  • the illustration here is a sectional view perpendicular to an illumination surface 20 of the converter element 16 embodied here as a plane.
  • the illumination surface 20 may alternatively also be curved.
  • the respective first and second light beams 4, 5 After being emitted by the first and second light sources 2, 3, the respective first and second light beams 4, 5 pass through the respective first and second optical systems 6, 7 in order then to strike the first and second deflection elements 14, 15, respectively. At these controllable deflection elements 14, 15, the two light beams 4, 5 are deflected variable. Due to the variable deflection, the two light beams 4, 5 pass over a respective first and second solid angle range ⁇ - 1 , ⁇ 2 .
  • the light beam 4, 5 is shown in three exemplary positions or positions of the deflecting elements 14, 15 so that the first light beam 4 is shown as splitting into first light beams 4a, 4b, 4c and the second light beam 5 is shown as in three Light beams 5a, 5b, 5c splitting.
  • the respective middle light beams 4b, 5b correspond to a deflection by the deflection element 14, 15 in a neutral position
  • the respective edge light beams 4a, 4c, 5a, 5c correspond to a deflection of the respective light beams 4, 5 by the two deflection elements 15, 15 in extreme positions.
  • the deflecting elements 14, 15 are respectively pivoted so as to cover the first and the second solid angle range ⁇ , 0: 2 with the respective light beam.
  • the two solid angle regions c, 02 are each shown two-dimensionally in an xz plane, but in this example they also include a region which extends in the y direction perpendicular to the xz plane.
  • a respective first illumination area 18 and second illumination area 19 of an illumination area 20 of the converter element 16 are illuminated or driven off by the respective light beams 4, 5.
  • the respective light beam 4, 5 is thus repeatedly guided or driven over the respective illumination area 18, 19, so that in the present case the illumination area 20 in the worn illumination areas 18, 19 is excited to shine.
  • the light beams 4a, 4c, 5a, 5c deflected in the extreme positions of the respective deflection elements 14, 15 each determine an edge of the associated respective illumination area 18, 19 and excite it Emitting a light. Since the deflecting elements 14, 15 are embodied here as micromirrors, the deflecting elements 14, 15 are moved back and forth between the two extreme positions.
  • the deflecting elements 14, 15 thus have a zero speed in the extreme positions and the brightness is given by a given intensity and a given dwell time at a point according to Talbot 's law, the brightness is at the edge of the respective footprints 18, 19 by a multiple higher than in a central region of the two footprints 18, 19.
  • the two illumination areas 18, 19 adjoin one another in a center of the illumination area 20, so that this center is particularly bright.
  • the two illumination areas 18, 19 could not adjoin one another directly but could be separated by a small area of the illumination area 20 which is not illuminated by the light beams 4, 5.
  • the two illumination areas 18, 19 may also overlap.
  • an increased brightness is achieved in a central area 21, in which the two illumination areas 18, 19 extend, whereas in a respective first edge area 22 and in a second edge area 23 of the illumination area 20 only the usual state of the art usual brightness is achieved.
  • the central region 21 corresponds to a central region of a light distribution and thus a center of illumination of an environment of the motor vehicle, this arrangement is particularly advantageous.
  • the respective light sources 2, 3 and deflection elements 14, 15 are arranged symmetrically with respect to the illumination surface 20. Of course, asymmetric arrangements are possible.
  • the respective deflection elements 14, 15 it is also possible to adjust the respective deflection elements 14, 15 so that an average distance between the respective illumination region 18, 19 and the deflection element 14, 15 is maximized.
  • at least one of the two deflecting elements 14, 15, in the present case both is located more remote from one of the two edge regions 22, 23 than from the respective other edge region 23, 22.
  • the first deflecting element 14 is further away from the second edge region 23 arranged as from the first edge region 22.
  • the second deflecting element 15 is arranged farther from the first edge region 22 than from the second Edge region 23.
  • the respective illumination regions 18, 19 can now be displaced by setting the corresponding solid angle range ⁇
  • FIG. 2 shows a schematic representation of an exemplary illumination surface of a further exemplary embodiment of a single headlight.
  • the illumination surface 20, which extends in an xy plane, here has a first illumination region 18, a second illumination region 19 and a third illumination region 24.
  • the first and second illumination regions 18, 19 overlap in a first central region 21.
  • both illumination regions 18, 19 are embodied in a rectangular shape and together also form a rectangle, which extends mainly in the x-direction.
  • the third footprint area 24 also forms a rectangle which extends mainly in the x direction and in the example shown is longer in this direction than either of the two footprints 18, 19.
  • the third footprint is offset in the y direction from the first two footprints 18, 19 and overlaps with the first illumination area 18 in a second central area 25 and with the second illumination area 19 in a third central area 26.
  • All three central areas 21, 25, 26 overlap here again in a region which in this example a Center M of the illumination surface 20 includes. It can be achieved by the overlap of all three footprints 18, 19, 24 in the center M and a surrounding area of the illumination surface 20, a maximum brightness.
  • the illumination surface is here symmetrical with respect to an axis of symmetry A, which runs through the center M in the y-direction.
  • light functions such as a dipped beam or a high beam can be realized by adjusting the amount of overlap or even certain illumination areas 18, 19, 24 are no longer illuminated by a respective light beam.
  • a lighting of the entire illustrated illumination surface 20 corresponds to a high beam and, for example, a low beam function can be achieved by no longer illuminating or illuminating the first illumination region 18 and thus obscuring it.

Landscapes

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

Abstract

L'invention concerne un phare individuel (1), destiné à un véhicule automobile, qui comprend au moins une source de lumière (2, 3), destinée à émettre un premier et un second faisceau lumineux (4, 5), et un premier et un second élément de déviation commandable (14, 15) destinés à dévier de manière variable respectivement les premier et second faisceaux lumineux (4, 5) dans une première et une seconde gamme d'angles solides (α1, α2) sur une surface d'éclairement prédéterminée (20) ; aux gammes d'angles solides (α1, α2) respectives sur la surface d'éclairement (20) correspondent des zones d'illumination (18, 19) respectives qui sont illuminées par les faisceaux lumineux (4, 5) respectifs et la surface d'illumination (20) comporte deux zones de bord (22, 23, 24) et une zone centrale (21, 25, 26) ; les zones de bord (22, 23, 24) forment une grande partie de la surface d'illumination (20), les deux zones d'illumination (18, 19) s'étendent tous les deux dans la zone centrale (21, 25, 26) et ne comportent en outre chacune qu'une des deux zones de bord (22, 23, 24) pour obtenir une illumination améliorée d'un environnement d'un véhicule automobile.
PCT/EP2015/002154 2014-11-13 2015-10-29 Phare individuel pour véhicule automobile Ceased WO2016074766A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES15787474T ES2788708T3 (es) 2014-11-13 2015-10-29 Faros individuales para un automóvil
EP15787474.4A EP3218645B1 (fr) 2014-11-13 2015-10-29 Phare individuel pour véhicule automobile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014016853.0A DE102014016853A1 (de) 2014-11-13 2014-11-13 Einzelscheinwerfer für ein Kraftfahrzeug
DE102014016853.0 2014-11-13

Publications (1)

Publication Number Publication Date
WO2016074766A1 true WO2016074766A1 (fr) 2016-05-19

Family

ID=54364255

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/002154 Ceased WO2016074766A1 (fr) 2014-11-13 2015-10-29 Phare individuel pour véhicule automobile

Country Status (4)

Country Link
EP (1) EP3218645B1 (fr)
DE (1) DE102014016853A1 (fr)
ES (1) ES2788708T3 (fr)
WO (1) WO2016074766A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023072465A1 (fr) * 2021-10-27 2023-05-04 Psa Automobiles Sa Dispositif de phare d'un véhicule et procédé pour éclairer un champ de projection composé d'une première région de projection et d'une seconde région de projection

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016006815A1 (de) * 2016-06-03 2017-12-07 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Scheinwerfervorrichtung für ein Fahrzeug
DE102016006798A1 (de) * 2016-06-03 2017-12-07 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Scheinwerfervorrichtung für ein Fahrzeug
JP7382241B2 (ja) * 2020-01-30 2023-11-16 スタンレー電気株式会社 照明装置及び車両用灯具
JP7382242B2 (ja) * 2020-01-30 2023-11-16 スタンレー電気株式会社 照明装置及び車両用灯具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009025678A1 (de) * 2008-06-24 2010-01-21 Koito Manufacturing Co., Ltd. Leuchtvorrichtung für ein Fahrzeug
US20110249460A1 (en) * 2010-04-08 2011-10-13 Takuya Kushimoto Vehicle headlight
US20140029282A1 (en) * 2012-07-27 2014-01-30 Valeo Vision Adaptive lighting system for an automobile vehicle
WO2014121315A1 (fr) * 2013-02-07 2014-08-14 Zizala Lichtsysteme Gmbh Projecteur pour un véhicule à moteur et procede de diffusion de lumière

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
DE19737653A1 (de) 1997-08-29 1999-03-04 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Beleuchtungseinrichtung für Fahrzeuge und Betriebsverfahren für eine derartige Beleuchtungseinrichtung
DE102010048659B4 (de) 2010-10-15 2012-05-03 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung eines Kraftfahrzeugs
DE102012002232A1 (de) 2012-02-04 2012-09-20 Daimler Ag Beleuchtungsvorrichtung für ein Fahrzeug
AT513916B1 (de) * 2013-02-07 2015-04-15 Zizala Lichtsysteme Gmbh Scheinwerfer für ein Kraftfahrzeug und Verfahren zum Erzeugen einer Lichtverteilung
JP6360699B2 (ja) * 2014-03-25 2018-07-18 スタンレー電気株式会社 ヘッドランプ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009025678A1 (de) * 2008-06-24 2010-01-21 Koito Manufacturing Co., Ltd. Leuchtvorrichtung für ein Fahrzeug
US20110249460A1 (en) * 2010-04-08 2011-10-13 Takuya Kushimoto Vehicle headlight
US20140029282A1 (en) * 2012-07-27 2014-01-30 Valeo Vision Adaptive lighting system for an automobile vehicle
WO2014121315A1 (fr) * 2013-02-07 2014-08-14 Zizala Lichtsysteme Gmbh Projecteur pour un véhicule à moteur et procede de diffusion de lumière

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023072465A1 (fr) * 2021-10-27 2023-05-04 Psa Automobiles Sa Dispositif de phare d'un véhicule et procédé pour éclairer un champ de projection composé d'une première région de projection et d'une seconde région de projection

Also Published As

Publication number Publication date
EP3218645B1 (fr) 2020-04-08
EP3218645A1 (fr) 2017-09-20
ES2788708T3 (es) 2020-10-22
DE102014016853A1 (de) 2016-05-19

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