WO2015144787A1 - Phare - Google Patents

Phare Download PDF

Info

Publication number
WO2015144787A1
WO2015144787A1 PCT/EP2015/056471 EP2015056471W WO2015144787A1 WO 2015144787 A1 WO2015144787 A1 WO 2015144787A1 EP 2015056471 W EP2015056471 W EP 2015056471W WO 2015144787 A1 WO2015144787 A1 WO 2015144787A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
light
light source
previous
headlight device
Prior art date
Application number
PCT/EP2015/056471
Other languages
German (de)
English (en)
Inventor
Stefan Groetsch
Original Assignee
Osram Gmbh
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 Osram Gmbh filed Critical Osram Gmbh
Publication of WO2015144787A1 publication Critical patent/WO2015144787A1/fr

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
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/125—Coloured 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
    • 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
    • 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
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors

Definitions

  • the headlight device is a so-called AFS (Adaptive Front Lighting System).
  • AFS Adaptive Front Lighting System
  • the weather conditions, the road conditions or the lighting conditions are varied so that the road is optimally illuminated.
  • headlamp devices that use classic light sources such as discharge lamps with a panel, with parts of the
  • Aperture setting for example, mechanical
  • Stepper motors used Furthermore, static light-emitting diodes are known as light sources, which partially to achieve a desired light distribution on and
  • Light distribution can be generated in the simplest possible way.
  • Luminous field represented by a horizontal axis and a
  • the light field is preferably divided into upper and lower sides from the perspective of the vehicle through the horizontal axis.
  • the light distribution of the low beam has a shutter edge or light-dark boundary, which is composed of a straight horizontal part on the left side and a right-rising part, which starts from an arranged on the vertical axis kink.
  • the illuminated field is understood to be the brightly illuminated region which lies below the cut-off line
  • Headlight function can be changed in a predetermined manner.
  • the headlamp device can be different
  • Headlight functions such as low beam, high beam, - -
  • Motorway light or cornering light which can be achieved by a targeted change of the light field.
  • Headlamp device a laser light source.
  • the laser light source preferably emits laser radiation which has a greater divergence in a first direction (so-called “fast axis”) than in a second direction, which is transverse to the first direction, in particular perpendicular (so-called “slow axis”).
  • the laser radiation has a beam cross section whose geometric shape deviates from the round shape.
  • Beam cross-section of an elliptical or approximately elliptical shape By means of the laser radiation, at least one light segment can be generated whose shape is determined by the
  • the light segment is to be understood as a field illuminated by laser radiation or wavelength-converted radiation or mixed light.
  • the shape of the light segment may deviate from the round shape in accordance with the geometric shape of the beam cross section.
  • the light segment in the first direction has a shorter extension and in the transverse, in particular
  • Light segment an elliptical or approximately elliptical shape.
  • Laser light source a single light-emitting element on, the laser radiation with one of the round shape
  • Light segment is generated with appropriate shape. It is - -
  • the laser light source prefferably has a plurality of light-emitting elements which each emit laser radiation having a beam cross-section deviating from the round shape, so that a plurality of light segments having a corresponding shape are produced.
  • Laser light source at least one laser diode.
  • Laser light source may have a plurality of laser diodes, which are in particular cell-shaped, that is arranged in a row approximately along the second direction. Furthermore, the laser light source may comprise a laser bar.
  • the laser bar may include a plurality of wide stripe laser elements arranged in parallel.
  • Laser light source contained laser diode or the laser bar on a vertical dimension, which is smaller than a horizontal dimension of the laser diode or the laser bar.
  • the ratio of vertical dimension to horizontal dimension is in particular between 1:10 and 1: 500.
  • the vertical dimension, that is, in particular the height, the laser diode or the laser bar can be less than 1 ym.
  • the horizontal dimension that is, in particular the height, the laser diode or the laser bar can be less than 1 ym.
  • the vertical dimension along the first direction and the horizontal dimension along the second direction are determined. - -
  • this corresponds to
  • Ratio of the shorter extension to the longer extension of the light segment the ratio of vertical dimension to horizontal dimension of the laser diode or the laser bar. This means in particular that the ratio of the shorter extension to the longer extension of the light segment can be between 1:10 and 1: 500.
  • the laser light source preferably generates light in a first wavelength range during operation.
  • the conversion element can at least partially convert the light of the first wavelength range into light of a second wavelength range.
  • At least part of the laser radiation is converted into radiation with a greater wavelength by the conversion element.
  • Headlamp device a deflection device which deflects the laser radiation during operation in the first and / or second direction.
  • the deflected laser radiation can be deflected by the deflection device up or down and / or to the left or right relative to the main emission direction, in which a large part of the radiation is emitted by the laser light source.
  • the at least one light segment is mapped onto the conversion element several times by the deflection of the laser radiation.
  • the imaged light segments are arranged in rows along the first and / or second direction, wherein one row - -
  • first direction may also be referred to as a column and a row along the second direction may also be referred to as a row.
  • the luminous field is generated from the imaged light segments.
  • Light field is determined in particular by the number of light segments shown. Furthermore, the shape of the light field by a suitable arrangement of
  • a vertical resolution of the luminous field is determined by the shorter extent of the luminous segment and a horizontal resolution of the luminous field by the longer extent of the luminous segment.
  • the vertical resolution is greater than the horizontal resolution.
  • a headlamp device which achieves a better resolution along the vertical axis than along the horizontal axis, the current technical regulations in Germany and Europe, which require a lower tolerance in the vertical direction than in the horizontal direction, perfectly.
  • Headlamp device produced illuminated field with mixed light, which is in particular radiation from the first wavelength range, which is generated by the laser light source, and radiation from the second
  • Wavelength range which is generated by the conversion element composed.
  • the first wavelength range is the spectral range for blue light.
  • the light of the second wavelength range is - -
  • the illuminated field can be illuminated with white mixed light.
  • the coming of the laser light source laser radiation is reflected at the deflector.
  • This has the advantage that the luminous field produced is not arranged in the main emission direction of the laser light source and thus the laser radiation can not reach directly into the eye of a viewer and can lead to damage.
  • the laser radiation coming from the laser light source can be transmitted to the deflection device.
  • Deflection device and the conversion element preferably arranged along the main emission and can be easily adjusted to each other.
  • the conversion element is located away from the deflector and in particular also remote from the laser light source. This can do that
  • Conversion element preferably has one of
  • Wavelength-converted radiation is radiated in particular to a large extent on a second surface of the conversion element facing away from the deflection device.
  • the conversion element contains a conversion material for which, for example, at least one of the following materials is considered: - -
  • Rare earth metals doped alkaline earth sulfides with rare earth doped thiogallates are rare earth metals doped alkaline earth sulfides with rare earth doped thiogallates
  • Rare earth metals doped oxynitrides, rare earth-doped aluminum oxynitrides.
  • the conversion material is doped
  • Grenades such as Ce- or Tb-activated garnets such as YAG: Ce,
  • TAG Ce
  • TbYAG Ce formed.
  • Headlamp device on an optical device is
  • the optical device is the
  • Subordinate laser light source in their main emission direction Preferably, the optical device is between the
  • the optical device may comprise one or more lenses.
  • each laser diode or each laser bar element is associated with a lens.
  • the laser light source can be reproduced by the optical device with respect to the deflection device. This means
  • the laser light source by means of the deflection device can be relatively faithful to the
  • Direction has the shorter and in the second or horizontal direction, the longer extent.
  • Deflection device a mirror assembly with at least one adjustable mirror plane.
  • the mirror plane is preferably rotatable about at least one axis.
  • the deflection device may have a control device which is provided to control the mirror arrangement such that it
  • Laser light source emitted laser radiation by means of
  • the deflection device may comprise a micromirror array or a mirror facet drum.
  • Figure 1 is a diagram representing a
  • Figure 2 is a graph showing the activation time of
  • Figure 4 is a schematic perspective view of a
  • FIG. 5 shows a schematic illustration of the functional principle of a headlamp device according to an exemplary embodiment
  • Figure 6 is a schematic representation of the principle of operation of a headlight device according to an embodiment.
  • Headlamp generated light field 2 is located below the cut-off line C.
  • the light-dark boundary C is made up of a straight line
  • An adjustment of the axis of the light beam may not be more than 0.25 °, starting from the line B upwards or downwards. This results in the tolerance range T1 for the vertical accuracy of the target.
  • an adjustment of the axis of the light bundle may not be horizontally more than 0.5 ° to the left or 0.75 ° to the right. It follows for the horizontal
  • the shorter vertical extent of the imaged light segment should be at most 0.1 °.
  • the graph shown in Figure 2 is a
  • Curve I shows the relative activation of the dipped beam of a headlamp
  • curves II to V show the local activation of headlamps, the pixel light or
  • the light segments may have a horizontal extension of 2 ° (curve III), 1 ° (curve IV) and 0.5 ° (curve V). Although the horizontal extent of the light segments decreases from Curve III to Curve V and thus the horizontal resolution increases, there is no appreciable
  • FIG. 3 shows an exemplary embodiment of a laser light source 10 which is suitable for a presently described embodiment
  • the laser light source 10 is a
  • the laser light source 10 has a vertical dimension W and a horizontal dimension L, wherein the vertical dimension W is in particular smaller than the horizontal dimension L. Preferably, this is
  • the laser light source 10 may be smaller than 1 ym.
  • the horizontal dimension L, that is, in particular the width, of the laser light source 10 can be between 25 ⁇ m and 200 ⁇ m.
  • the laser light source 10 In operation, the laser light source 10 generates laser radiation 11, which emerges from the laser light source 10 on a main surface 10A and is emitted to a large extent in a main emission direction M. In a perpendicular to
  • the laser radiation 11 has a greater divergence than in a second, the first
  • an opening angle of the laser radiation 11 in the first direction Rl between 15 ° and 30 ° and in the second direction R2 between 4 ° and 12 ° amount.
  • the opening angle corresponds to the half width of the
  • Laser light source 10 is determined parallel to the first direction Rl, while the horizontal dimension L of the laser light source 10 is determined parallel to the second direction R2.
  • FIG. 3 shows that the laser light source 10 has an optical device 12 in the main emission direction M.
  • the optical device 12 comprises a lens, which the laser light source 10 on a deflection (not - -
  • the optical device 12 is arranged. Furthermore, the optical device 12 advantageously comprises an optical element (not shown) for rotating the beam profile of the laser radiation 11 by 90 ° in particular, so that a light segment 13 generated in the focal plane E has a shorter extent F in the first direction R 1 and a shorter extent F in the second direction Direction R2 has a longer extent G.
  • FIG. 4 shows a headlight device 1 or parts of a headlight device 1 according to a preferred exemplary embodiment.
  • Headlight device 1 comprises a laser light source 10, an optical device 12, a deflection device 14 and a conversion element 15.
  • the illustrated laser light source 10 is a laser bar comprising a plurality of broad-band laser elements 10B arranged in parallel.
  • the broad-band laser elements 10B each emit laser radiation 11 with a particular elliptical or approximately
  • the optical device 12 is arranged downstream of the laser light source 10 in the main emission direction M. Furthermore, the optical device 12 is arranged between the laser light source 10 and the deflection device 14. In particular, the optical device 12 has a plurality of lenses, one lens each being associated with a broadband laser element 10B. By means of the optical device 12 is the
  • Laser light source 10 is shown on the deflection device 14 on the conversion element 15, wherein on the - -
  • Conversion element 15 a plurality of light segments 13 arise, which are arranged in a row, that is, in a row along the second direction R2.
  • the deflector 14 comprises a mirror assembly 14A, which is a mirror facet drum having a plurality of mirror planes 14B that combine to form the mirror assembly 14A
  • Mirror facet drum with respect to a rotational axis R has a rotationally symmetrical shape.
  • the top surface is formed by an irregular polygon.
  • the deflection device 14 By means of the deflection device 14, the laser radiation 11 is deflected onto the conversion element 15 (see FIGS. 5 and 6).
  • the conversion element 15 is arranged away from the deflection device 14. Furthermore, the conversion element 15 is arranged away from the laser light source 10.
  • the conversion element 15 can be well cooled.
  • the conversion element 15 By means of the conversion element 15, at least a part of the laser radiation 11 can be wavelength-converted.
  • the laser radiation 11 can be emitted in a first wavelength range, which may be, for example, the - -
  • Wavelength-converted radiation can be emitted in a second wavelength range in which it is
  • the spectral range for yellow light acts. In this way, from the conversion element 15 of the blue laser light 11 and the yellow
  • wavelength-converted light produces white mixed light.
  • the conversion element 15 has a first surface 15A facing the deflection device 14, to which the
  • Laser light source 10 is displayed.
  • the mixed light used to generate the light field is of the
  • FIG. 5 illustrates the principle of operation of a headlight device 1 as shown in FIG. 4.
  • laser radiation 11 is generated by the laser light source 10 and emitted in the main emission direction M.
  • Laser light source 10 by means of the optical device 12, which is arranged downstream of the laser light source 10 in the main emission direction M, on the mirror assembly 14A of
  • the mirror assembly 14A is a one in this embodiment
  • the deflector 14 may
  • the mirror assembly 14A in addition to the mirror assembly 14A comprise a control device (not shown) which is arranged to drive the mirror assembly 14A such that it
  • Laser light source 10 is shown, a desired
  • control device may rotate the mirror assembly 14A - -
  • the mirror plane 14B to which the laser light source 10 is imaged is easily tilted. Due to the slight tilting, the laser radiation 11 can be deflected in the first direction R1, that is, upwards or downwards. This creates a column
  • illustrated laser light source 10 having a plurality of laser elements 10A, by the deflection in the first direction Rl a plurality of columns of light segments.
  • the mirror plane 14B on which the laser light source 10 is imaged, can be rotated about a tilting axis arranged perpendicular to the axis of rotation R. By tilting the laser radiation 11 in the second direction R2, that is to the left or right, are deflected. This creates a row of light segments.
  • a desired light distribution or a desired light field 2 can be generated, for example, as shown in Figure 5, the light distribution of
  • a resolution of the light field can be achieved along the vertical axis - -

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 (1). En particulier, le phare (1) est un phare à système d'éclairage frontal adaptatif, dit AFS. La source de lumière (1) utilisée par le phare (1) est de préférence une source de lumière laser (10) qui émet un rayonnement laser (11) ayant une section transversale du faisceau dont la forme géométrique est différente de la forme ronde.
PCT/EP2015/056471 2014-03-27 2015-03-25 Phare WO2015144787A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014205777.9 2014-03-27
DE102014205777.9A DE102014205777A1 (de) 2014-03-27 2014-03-27 Scheinwerfervorrichtung

Publications (1)

Publication Number Publication Date
WO2015144787A1 true WO2015144787A1 (fr) 2015-10-01

Family

ID=52875114

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/056471 WO2015144787A1 (fr) 2014-03-27 2015-03-25 Phare

Country Status (2)

Country Link
DE (1) DE102014205777A1 (fr)
WO (1) WO2015144787A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109477622A (zh) * 2016-05-17 2019-03-15 Aml系统公司 用于汽车车辆前灯的发光二极管照明系统和扫描设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6684602B2 (ja) * 2016-01-25 2020-04-22 スタンレー電気株式会社 光走査装置
DE102016002702A1 (de) * 2016-03-08 2017-09-14 Osram Gmbh Lichtquellenanordnung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008022795A1 (de) * 2008-05-08 2009-11-12 Osram Opto Semiconductors Gmbh Kfz-Scheinwerfer
US20110249460A1 (en) * 2010-04-08 2011-10-13 Takuya Kushimoto Vehicle headlight
US20120051074A1 (en) * 2010-08-31 2012-03-01 Sharp Kabushki Kaisha Lighting apparatus, headlamp, and mobile body
WO2012076296A2 (fr) * 2010-12-06 2012-06-14 Osram Ag Dispositif d'éclairage
US20120314442A1 (en) * 2011-06-13 2012-12-13 Sharp Kabushiki Kaisha Light projection apparatus, light condensing unit, and light emitting apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5331156B2 (ja) * 2011-04-28 2013-10-30 シャープ株式会社 投光ユニットおよび投光装置
DE102012208566A1 (de) * 2012-05-22 2013-11-28 Bayerische Motoren Werke Aktiengesellschaft Beleuchtungsvorrichtung für ein Kraftfahrzeug

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008022795A1 (de) * 2008-05-08 2009-11-12 Osram Opto Semiconductors Gmbh Kfz-Scheinwerfer
US20110249460A1 (en) * 2010-04-08 2011-10-13 Takuya Kushimoto Vehicle headlight
US20120051074A1 (en) * 2010-08-31 2012-03-01 Sharp Kabushki Kaisha Lighting apparatus, headlamp, and mobile body
WO2012076296A2 (fr) * 2010-12-06 2012-06-14 Osram Ag Dispositif d'éclairage
US20120314442A1 (en) * 2011-06-13 2012-12-13 Sharp Kabushiki Kaisha Light projection apparatus, light condensing unit, and light emitting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109477622A (zh) * 2016-05-17 2019-03-15 Aml系统公司 用于汽车车辆前灯的发光二极管照明系统和扫描设备
CN109477622B (zh) * 2016-05-17 2022-05-27 Aml系统公司 用于汽车车辆前灯的发光二极管照明系统和扫描设备

Also Published As

Publication number Publication date
DE102014205777A1 (de) 2015-10-01

Similar Documents

Publication Publication Date Title
EP2851611B1 (fr) Module de phare
DE10009782B4 (de) Beleuchtungseinrichtung eines Fahrzeugs
EP2834554B1 (fr) Dispositif d'eclairage pour un véhicule
EP2934945B1 (fr) Dispositif d'éclairage pour un véhicule automobile
DE102015222188B3 (de) Lichtmodul für einen Fahrzeugscheinwerfer und Kraftfahrzeugscheinwerfer mit einem solchen Lichtmodul
DE102011078653B4 (de) Vorsatzoptik zur Bündelung von ausgesandtem Licht mindestens einer Halbleiterlichtquelle
DE102012211144B3 (de) Lichtmodul
WO2016045879A1 (fr) Phare pour véhicules
DE102005017528A1 (de) Leuchtmittel mit vorgegebener Abstrahlcharakteristik und Primäroptikelement für ein Leuchtmittel
DE102012208566A1 (de) Beleuchtungsvorrichtung für ein Kraftfahrzeug
DE102012112994A1 (de) Scheinwerfervorrichtung
WO2016062520A1 (fr) Module lumineux d'un dispositif d'éclairage et dispositif d'éclairage pourvu d'un tel module lumineux
WO2013149767A1 (fr) Dispositif d'éclairage pour véhicule automobile
EP2984396A2 (fr) Unité lumineuse dotée d'un cache pourvu d'au moins une fenêtre optique
WO2016087076A1 (fr) Dispositif d'éclairage pour un véhicule, système d'éclairage à deux dispositifs d'éclairage et procédé pour faire fonctionner le système d'éclairage
DE112019004392T5 (de) Abblendlicht-III-Zonen-Beleuchtungsmodul, Fahrzeug-Scheinwerfer und Fahrzeug
DE102015226633A1 (de) Leuchtvorrichtung mit einem Halbleiterlaser und einer Linseneinrichtung
WO2015144787A1 (fr) Phare
EP1500867A2 (fr) Module à DEL pour un projecteur de véhicule automobile et projecteur de véhicule automobile comprenant un tel module
DE102013215976B4 (de) Scheinwerferanordnung für ein Fahrzeug mit zwei Lichtquellen mit unterschiedlichen Spektren, deren Licht zur Erzeugung von Mischlicht von einer schwenkbaren Ablenkvorrichtung zu einer Leuchtstoffschicht gelenkt wird
DE19905115A1 (de) Scheinwerfer für Fahrzeuge
EP2993390B1 (fr) Phare pour un vehicule automobile et vehicule automobile
DE102014115068A1 (de) Beleuchtungsanordnung
DE102014204613B4 (de) Beleuchtungseinrichtung für ein Kraftfahrzeug
EP2159478B1 (fr) Phare pour véhicules

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15712365

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15712365

Country of ref document: EP

Kind code of ref document: A1