EP3014171A1 - Phare pour véhicules automobiles - Google Patents

Phare pour véhicules automobiles

Info

Publication number
EP3014171A1
EP3014171A1 EP14738353.3A EP14738353A EP3014171A1 EP 3014171 A1 EP3014171 A1 EP 3014171A1 EP 14738353 A EP14738353 A EP 14738353A EP 3014171 A1 EP3014171 A1 EP 3014171A1
Authority
EP
European Patent Office
Prior art keywords
light
unit
headlight according
laser
light sources
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.)
Granted
Application number
EP14738353.3A
Other languages
German (de)
English (en)
Other versions
EP3014171B1 (fr
Inventor
Markus REINPRECHT
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.)
ZKW Group GmbH
Original Assignee
Zizala Lichtsysteme 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 Zizala Lichtsysteme GmbH filed Critical Zizala Lichtsysteme GmbH
Publication of EP3014171A1 publication Critical patent/EP3014171A1/fr
Application granted granted Critical
Publication of EP3014171B1 publication Critical patent/EP3014171B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel 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
    • 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]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • 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
    • F21S41/10—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
    • F21S41/18—Combination of light sources of different types or shapes
    • 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
    • F21S41/24—Light guides
    • 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
    • F21S41/60—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
    • 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 invention relates to a headlamp for vehicles, with a plurality of light sources and an optics associated with the light sources.
  • a headlamp of this type is known for example from US 2011/0249460 AI.
  • a scanning laser system in which two laser beams deflected via moving micromirrors generate a luminous image on a phosphor matrix, which is projected by means of a lens on a roadway in order to generate a dynamically changeable light configuration there ,
  • a flat laser element is provided with individual, individually controllable light fields, the light fields each having a microlens assigned a superior microlens array, which projects the respective generated light image on a roadway.
  • an array of individual, individually controllable light sources preferably LEDs, provided Each light source is assigned a single look or light guide in the form of a light guide or a reflector.
  • the light image present at the light exit surface of the light guides is projected onto the roadway by means of optics, generally a lens.
  • DLPs Partial light digital light processors
  • a headlight of the type specified in which according to the invention a first light unit with at least one light source for generating a first, dynamically variable light image and a second, laser light unit with at least one laser light source, at least one beam deflection unit and at least one light conversion unit are, and the optics for merging the two luminous images, which is set up by the first lighting unit and at the light conversion unit of the second, laser light unit generated luminous images to a total light distribution on a roadway.
  • a headlamp is obtained which offers a high resolution, although the number of individual light sources is in a frame which does not cause problems in terms of cost or technical implementation, for example in terms of cooling and dimensions.
  • the first lighting unit has a plurality of light sources and each of the individual optics associated with the light sources.
  • the optics has two separate optical units, wherein each lighting unit is assigned to each one optical unit.
  • the optics may be advisable in terms of small size, if the optics has a single common optical unit, which is associated with both light units.
  • the at least one optical unit is designed as a lens.
  • the at least one laser light source which are combined in a structural unit, the at least one beam deflection unit and the at least one light conversion unit of the laser light unit.
  • the at least one light conversion unit of the laser lighting unit is provided on the first lighting unit in the region of its light exit surfaces.
  • a highly proven variant is characterized in that the at least one beam deflection unit is designed as a micromirror pivotable about at least one axis.
  • the first illumination unit has individual light sources arranged in at least two rows and a plurality of columns, wherein the individual light sources can be driven to generate a dynamically variable light distribution on a roadway.
  • the at least one beam deflecting unit for generating a dynamically variable illumination image consisting of optionally illuminable segments is set up on the light conversion unit.
  • the light sources of the first light unit are LEDs, favorable pricing results in a large selection with regard to the spectral light distribution and the light intensities.
  • FIG. 1 shows schematically the essential components of a headlamp according to the invention in a first embodiment
  • FIG. 2 shows a second embodiment of a headlamp according to the invention
  • 3 shows a third embodiment of a headlamp according to the invention
  • Fig. 5 shows the illuminated image of the second laser light unit
  • Fig. 6 composed of the light images of Fig. 4 and 5 total light distribution.
  • Fig. 1 shows a schematic diagram of a first embodiment of the invention.
  • Fig. 1 shows a schematic diagram of a first embodiment of the invention.
  • a headlight such as a housing, adjusting devices, etc.
  • first lighting unit 1 shows a first lighting unit 1, which, as shown and described in more detail below, has an array of individual light sources, in particular LEDs, which can be controlled individually or in groups individually.
  • the individual light sources are also assigned in this figure, not shown individual optics, which are formed for example in the form of a light guide or a reflector and at a light exit surface 2 generate a luminous image which can be projected by means of an optics, here by means of a lens 3 on the road ,
  • a second namely a laser light unit 4 is provided, which is shown on the left in FIG. 1 and which contains as essential components a laser light source 5 which generates a laser beam 6, a beam deflection unit 7, which is embodied here as a micromirror, and a Light conversion unit 8 has.
  • Such scanning laser light units are known, wherein the laser beam 6 generated by a swinging about one or two axes micromirror of the beam deflecting unit 7 at the light conversion unit 8 a specifiable luminous image, which is projected by another optics, here a lens 9, also on the road and combined with the light image generated by the first light unit 1 to form a total light image or a total light distribution on the roadway.
  • a lens 9 also on the road and combined with the light image generated by the first light unit 1 to form a total light image or a total light distribution on the roadway.
  • the two lenses 3 and 9 a further optics, such as a lens, be arranged downstream or it can be used optics that also use reflect
  • the laser light source 5 may, for example, generate a laser beam 6 with blue light, which is converted to white light at a phosphor of the light conversion unit 8. Although only a single laser light unit 4 is shown in this example, it is quite possible to use at least one further laser unit, which in turn scans the laser beam via the same beam deflection unit or via a further beam deflection unit to the light conversion unit 8.
  • a second embodiment of the invention wherein the first lighting unit 1 is shown in more concrete in one of the preferred embodiments and the same reference numerals are used for comparable parts.
  • the lighting unit 1 has light sources arranged in three rows and 2x8 and 1x28 columns and correspondingly many individual optics 10 or reflectors.
  • a light conversion unit 8 is provided in the region of the light exit surface of the first lighting unit 1, via which a laser beam 6 generated by a laser light source 5 deflects, deflected by an oscillating micromirror of a beam deflection unit 7.
  • the laser light unit 4 is formed by the laser light source 5, the beam deflection unit 7, and the light conversion unit 8 arranged on the first light unit 1.
  • FIG. 1 In contrast to the embodiment of FIG. 1 here is a two light units 1 and 4 common optics 11, namely a lens provided which merges the present at the exit surfaces of the optics 10 luminous image and determined by the scanning laser beam 6 at the light conversion unit 8 luminous image and can project onto a roadway.
  • a third embodiment of a headlight according to the invention is shown schematically, which corresponds in principle to that of FIG. 2, wherein the same reference numerals are used for comparable parts.
  • the first lighting unit 1 here consists of a light source unit 12 with individual light sources 13, which are designed as LEDs and are arranged in three rows of 26 columns.
  • This light source unit 12 or the individual light sources 13 is associated with a primary optics 14 which, according to the number of LEDs or light sources 13, here 78, has individual total reflecting light guides 15, which run forward and open in a light exit surface 16.
  • a light conversion unit 8 which is scanned by the laser beam 6, is arranged on this light exit surface 16, wherein the monochromatic laser light is converted into a light (white light) which is suitable for driving track illumination.
  • FIGS. 2 and 3 it can be seen that a number of the light exit openings of the individual light sources are covered by the light conversion unit 8 with a corresponding phosphor surface.
  • the spectral light distribution of the individual light sources 13 or LEDs in FIG. 3 is tuned to the phosphor of the light conversion unit 8 in such a way that they illuminate it or also cause it to shine, as shown in FIGS. 2 and 3
  • FIGS. 4 to 6 show three luminous images of a headlamp according to the invention, FIG. 4 showing the luminous image of a first luminous unit alone, the illumination in the vertical direction in this example being from -1 ° to + 5 ° and in the horizontal direction of FIG 15 ° left to 15 ° right and a division into three rows of 28 columns is provided. It should of course be clear that any division can be made here and, for example, that not every row should have the same number of columns.
  • FIG. 6 A corresponding light image is shown in Fig. 6, from which one recognizes the composition of the light images of Fig. 4 and Fig. 5, by the additional illumination of the area shown in Fig. 5, the functionality of the headlamp is substantially increased, as for this area a high-resolution laser light unit can be used, for example, which allows a vertical resolution of 0.5 ° in the entire illumination area and of 0.1 ° in the horizontal area.
  • the values given below may further emphasize the advantages of the invention.
  • the maximum illumination of the individual, caused by LEDs pixels is currently at about 80 to 100 lx, which is relatively little for a high beam, however.
  • the laser light unit which also reaches a maximum of, for example, 80 to 100 lx, a high beam is obtained which provides 180 to 200 lx of illumination in the high beam maximum, which meets current requirements for good headlights.
  • color effects can also be blurred and a more homogeneous, uniformly colored light image can be created.
  • the combination of the two lighting units also makes it possible to achieve a high dynamic resolution.
  • the relatively "coarse" pixels of the first lighting unit 1 cover a relatively large area, which is further subdivided by the high-resolution laser lighting unit 4.
  • very small areas can be controlled directly, so that the resolution of the overall system, as already mentioned, at horizontally less than 0.1 ° and vertically less than 0.5 °.
  • the illumination by the laser light unit 4 can be dispensed with even at lower speeds, which is advantageous for safety reasons, because, for example, when the vehicle is stationary, a light which is potentially dangerous or unpleasant for the person, emanating from the laser light unit not delivered.

Landscapes

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

Abstract

La présente invention concerne un phare destiné à des véhicules automobiles, comportant une pluralité de sources de lumière (5, 13) et un système optique (11) associé aux sources de lumière, dans lequel il est prévu une première unité d'émission de lumière (1) pourvue d'au moins une source de lumière (13) destinée à générer une première image lumineuse dynamiquement variable et une seconde unité d'émission de lumière laser (4) pourvue d'au moins une source de lumière laser (5), d'au moins une unité de déflection de faisceau (7) et d'au moins une unité de conversion de lumière (8) et dans lequel le système optique (11) est conçu pour combiner les deux images lumineuses, lesquelles images lumineuses sont générées par la première unité d'émission de lumière et au niveau de l'unité de conversion de lumière de la seconde unité d'émission de lumière laser pour répartir totalement la lumière sur une chaussée.
EP14738353.3A 2013-06-25 2014-05-26 Phare de véhicule Active EP3014171B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50417/2013A AT514333B1 (de) 2013-06-25 2013-06-25 Scheinwerfer für Fahrzeuge
PCT/AT2014/050123 WO2014205466A1 (fr) 2013-06-25 2014-05-26 Phare pour véhicules automobiles

Publications (2)

Publication Number Publication Date
EP3014171A1 true EP3014171A1 (fr) 2016-05-04
EP3014171B1 EP3014171B1 (fr) 2020-07-01

Family

ID=51176009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14738353.3A Active EP3014171B1 (fr) 2013-06-25 2014-05-26 Phare de véhicule

Country Status (6)

Country Link
US (1) US10101001B2 (fr)
EP (1) EP3014171B1 (fr)
JP (1) JP6018342B2 (fr)
CN (1) CN105308385A (fr)
AT (1) AT514333B1 (fr)
WO (1) WO2014205466A1 (fr)

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JP6018342B2 (ja) 2016-11-02
EP3014171B1 (fr) 2020-07-01
WO2014205466A1 (fr) 2014-12-31
US10101001B2 (en) 2018-10-16
JP2016524802A (ja) 2016-08-18
US20160146419A1 (en) 2016-05-26
AT514333A4 (de) 2014-12-15
AT514333B1 (de) 2014-12-15
CN105308385A (zh) 2016-02-03

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