EP0999407A2 - Phare adaptatif pour véhicules automobiles avec matrices de microlentilles - Google Patents

Phare adaptatif pour véhicules automobiles avec matrices de microlentilles Download PDF

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Publication number
EP0999407A2
EP0999407A2 EP99122136A EP99122136A EP0999407A2 EP 0999407 A2 EP0999407 A2 EP 0999407A2 EP 99122136 A EP99122136 A EP 99122136A EP 99122136 A EP99122136 A EP 99122136A EP 0999407 A2 EP0999407 A2 EP 0999407A2
Authority
EP
European Patent Office
Prior art keywords
matrix
matrices
microlenses
headlamp
motor
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.)
Withdrawn
Application number
EP99122136A
Other languages
German (de)
English (en)
Other versions
EP0999407A3 (fr
Inventor
Piero Perlo
Sabino Sinesi
Vito Lambertini
Claudia Bigliati
Bartolomeo Pairetti
Silvia Centro Richerche Fiat S.C.A. Farina
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 Italy SpA
Original Assignee
Automotive Lighting Italia SpA
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 Automotive Lighting Italia SpA filed Critical Automotive Lighting Italia SpA
Publication of EP0999407A2 publication Critical patent/EP0999407A2/fr
Publication of EP0999407A3 publication Critical patent/EP0999407A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates

Definitions

  • the present invention relates to a lighting device for motor-vehicles, of the type comprising a first and a second headlamp arranged side-by-side, each comprising a light source constituted by an incandescence lamp and a reflector associated with said lamp.
  • the invention relates to a lighting device of adaptive type, i.e. adapted to generate a light beam at the output whose pattern can be varied depending upon the travel condition of the motor-vehicle (steering angle, speed, etc.) and the ambient and light conditions, as well as the type of road on which the vehicle travels.
  • a lighting device of adaptive type i.e. adapted to generate a light beam at the output whose pattern can be varied depending upon the travel condition of the motor-vehicle (steering angle, speed, etc.) and the ambient and light conditions, as well as the type of road on which the vehicle travels.
  • the object of the present invention is that of providing an adaptive lighting device which on one hand is able to provide on optimized pattern in any condition of use and on the other hand has a structure which is relatively simple, of very reduced dimensions and of relatively low cost.
  • the invention provides an adaptive lighting device for motor-vehicles, comprising a first and a second handlamps arranged side-by-side, each including a light source constituted by an incandescence lamp and a reflector associated with said lamp, characterised in that said first headlamp is provided to originate a light beam at the output of the device having a predetermined basic pattern, and in that said second headlamp comprises two microlens matrices which are spaced apart from each other, located in front of the light source and reflector and movable relative to each other along a transverse and/or longitudinal direction with respect to the optical axis of the second headlamp, a first matrix of said matrices having its microlenses arranged according to a pitch which is an integer multiple of the pitch of the microlenses of the second matrix, so that said matrices originate a plurality of additional light beams, which can be selected by relative translation of the matrices, so as to generate a total pattern which is different for each condition of
  • a headlamp making use of two microlens matrices movable relative to each other along a direction transverse to the optical axis in order to vary the features of the emitted light beam is disclosed in EP-A-0 738 904.
  • a single headlamp is provided which should be able by itself, through the relative movement of the two microlens matrices, to originate a total beam having a variable pattern depending upon the conditions of use.
  • a pair of headlamps arranged side-by-side is provided.
  • the first headlamp has the task to originate a basic light beam, having a predetermined pattern whereas the second headlamp, which is provided with the pair of microlens matrices movable relative to each other in a transverse and/or longitudinal direction relative to the optical axis of the headlamp, has the task to generate additional light beams, which are added to the basic bean of the first headlamp in order to obtain the required total beam.
  • the two microlens matrices are provided so that a macroscopic relative movement thereof, in the order of the pitch of the microlenses of the movable matrix, gives rise to a complete change of the generated pattern, whereas a movement of lower length does not change the type of generated additional beam, but only varies its features in terms of direction (by a transverse movement) and vergence (by a longitudinal movement) of the selected beam.
  • the first matrix is arranged between the light source and the second matrix and has its microlenses distributed on the surface facing towards the source, whereas the second matrix has its microlenses distributed on the surface facing towards the outside of the device.
  • the second matrix prisms are provided on the opposite face of the second matrix prisms.
  • matrix a plate of transparent material (tipically plastic material) is meant which can be obtained by technological processes of a type known per se, having one face thereof defining the microlens distribution.
  • Tipical dimensions of the microlens matrices are 120 mm for the first matrix and 120 mm for the second matrix, the pitch of the microlens distribution being 6 mm in the first matrix and 3 mm in the second matrix respectebly.
  • the relative movement of the two matrices can be obtained in any known way, for example by means of motor means, which also can be made in any know way, associated with the second matrix.
  • electronic control means are preferably provided for controlling the above mentioned motor means, which receive signals from sensor means for sensing the travel and ambient conditions and control the motor means depending upon the above mentioned signals.
  • the afore-said sensor means may comprise a sensor for sensing the motor-vehicles steering angle, a speed sensor, a light sensor, a GPS receiver, or also a videocamera located on-board the vehicle and having the function of monitor both the ambient conditions and the type of road on which the motor-vehicle travels.
  • the device according to the invention is able to automatically adapt to the features of the beam going out of the device to the conditions of use.
  • Figure 1 is a diagrammatic front view of a lighting device 1 for motor-vehicles, comprising a supporting structure 2 on which two headlamps 3, 4 are mounted side-by-side.
  • the first headlamp 3 is of a conventional type, with a light source constituted by an incadescence lamp 5, such as of the H7 type and a reflector element 9 located at the rear of lamp 8.
  • a light source constituted by an incadescence lamp 5, such as of the H7 type and a reflector element 9 located at the rear of lamp 8.
  • the details of construction of lamp 8, reflector 9 and the way by which lamp 8 is mounted on reflector 9 are not shown, since by can be of any known type and their deletion from the drawings renders the latter simpler and easier to understand.
  • the supporting structure of the device has not been shown, as also not shown is the transparent element 10, which is provided also for head lamp 4, located at the front and spaced apart with respect to lamp 8.
  • the second headlamp 4 comprises a first and a second microlens matrices 11, 12 which are spaced apart from each other and interposed between lamp 8 and the transparent element (not shown) of the head lamp.
  • the first matrix 11 is constituted by a transparent plate of glass or plastic material, which can be produced in any known way, having its surface facing towards source 8 shaped so as to define a matrix distribution of microlens 13, such as spherical, aspherical or cylindrical microlenses.
  • the matrix of microlenses 13 has a transverse dimension in order of 120 mm, the microlenses being distributed with a pitch in the order of 6 mm.
  • the second matrix 12 is constituted by a plate of transparent plastic material made similarly to plate 11, having its surface facing towards the outside provided with a matrix distribution of microlenses 14 (such as spherical or aspherical or cilindrical microlenses) having a pitch which is an integer submultiple of the pitch of the microlens 13.
  • the matrix of microlenses 14 has a transverse dimension in the order of 120 mm, with the microlenses having a pitch of 3 mm.
  • the two microlens matrices 11, 12 can be moved relative to each other both in a transverse and a longitudinal direction with respect to the optical axis 4a (figure 2) of the headlamp 4.
  • matrix 11 is fixed, whereas matrix 12 can be translated by motor means of any type, such as a linear electric motor.
  • motor means of any type, such as a linear electric motor.
  • the first headlamp 3 is for generating a basic light beam, having a predetermined pattern
  • the second head lamp 4 is able to selectively generate a plurality of additional different beams, which are added to the basic beam generated by the head lamp 3 in order to obtain a total beam having features which vary depending upon the conditions of use.
  • the selection of the additional light beams is obtained by causing a macroscopic movement, in the order of the pitch of microlenses 14, of the second matrix 12, as shown in figures 3, 4, which relate to two end positions of the second matrix 12. Smaller movements of the matrix 12 are instead used to vary direction and vergence characteristics of a determined selected additional beam.
  • the second matrix 12 further has a plurality of prisms 15 on its front face.
  • Figure 5 of the annexed drawings shows the pattern which can be obtained by the device according to the invention in a plane orthogonal to the optical axis of each of the headlamps 3, 4 and located at a 25 metres distance from the device.
  • axes H and V respectively designate the horizontal and vertical directions, whereas the various lines indicate the profiles of the area illuminated by the device in the different conditions of use.
  • the basic beam generated by headlamp 3 is that which originates the pattern designated by line B, which is of the "low beam” or "cross beam” type, having characteristics which are defined by laws or more specifically by car manufactures.
  • the basic pattern B is added with two separeted areas C, as shown in figure 5, by a suitable selection of the position of the second matrix 12 of the headlamp 4.
  • FIG. 6 is a block diagram which diagrammatically shows the matrix 12 and the motor means 16 for controlling the movementof the matrix.
  • motor means 16 are controlled by an electronic control unit 17 on the basis of signals 18 which are sent thereto by sensors of any type, such as a sensor of the motor-vehicle steering angle, a speed sensor, a GPS receiver, a sensor of the ambient and light conditions. Additionally or alternatively, a videocamera can be used arranged on-board the motor-vehicle and able to detect the ambient conditions and the conditions of the road on which the motor-vehicle travels.
  • sensors of any type such as a sensor of the motor-vehicle steering angle, a speed sensor, a GPS receiver, a sensor of the ambient and light conditions.
  • a videocamera can be used arranged on-board the motor-vehicle and able to detect the ambient conditions and the conditions of the road on which the motor-vehicle travels.
  • the whole device may be adapted to be tilted, in order to contribute to the orientation of the light beam.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP99122136A 1998-11-05 1999-11-05 Phare adaptatif pour véhicules automobiles avec matrices de microlentilles Withdrawn EP0999407A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998TO000933A IT1305161B1 (it) 1998-11-05 1998-11-05 Dispositivo di illuminazione adattativo, a doppio proiettore, perautoveicoli, con matrici di microlenti.
ITTO980933 1998-11-05

Publications (2)

Publication Number Publication Date
EP0999407A2 true EP0999407A2 (fr) 2000-05-10
EP0999407A3 EP0999407A3 (fr) 2001-09-05

Family

ID=11417159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99122136A Withdrawn EP0999407A3 (fr) 1998-11-05 1999-11-05 Phare adaptatif pour véhicules automobiles avec matrices de microlentilles

Country Status (2)

Country Link
EP (1) EP0999407A3 (fr)
IT (1) IT1305161B1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1398562A1 (fr) * 2002-09-11 2004-03-17 ERCO Leuchten GmbH Luminaire produisant un cone lumineux nettement délimité
EP1577608A2 (fr) * 2004-03-16 2005-09-21 Schefenacker Vision Systems Germany GmbH Luminaire avec une structure optique pour influencer le rayonnement
WO2015058227A1 (fr) * 2013-10-25 2015-04-30 Zizala Lichtsysteme Gmbh Module d'éclairage à micro-projection destiné à un projecteur de véhicule automobile
EP3404313A1 (fr) 2017-05-18 2018-11-21 Automotive Lighting Reutlingen GmbH Phare de véhicule automobile pourvu de module lumineux comportant des microprojecteurs
DE102017112971A1 (de) 2017-06-13 2018-12-13 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit wenigstens zwei Ausgangsteillinsen aufweisenden Mikroprojektionsmodulen
EP3453945A1 (fr) * 2017-09-08 2019-03-13 Valeo Vision Dispositif de formation de motif de lumière, lampe de véhicule le comprenant et véhicule à moteur
CN109563976A (zh) * 2016-08-08 2019-04-02 市光工业株式会社 车辆用灯具
DE102018101991B3 (de) 2018-01-30 2019-05-09 Automotive Lighting Reutlingen Gmbh Effizientes, Mikroprojektoren aufweisendes Projektionslichtmodul für einen Kraftfahrzeugscheinwerfer
WO2020074508A1 (fr) * 2018-10-09 2020-04-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Projecteur de feu de route
CN111094839A (zh) * 2017-09-27 2020-05-01 Zkw集团有限责任公司 带有具有细分的微型射入镜头的微型镜头***的机动车照明装置
DE102020100624A1 (de) * 2020-01-14 2021-07-15 Zumtobel Lighting Gmbh Leuchtenoptikanordnung sowie Leuchte mit Leuchtenoptikanordnung
DE102020110900A1 (de) 2020-05-04 2021-11-04 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0738904A1 (fr) 1995-04-19 1996-10-23 MAGNETI MARELLI S.p.A. Dispositif d'illumination adaptatif, en particulier phare de véhicule

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2579256Y2 (ja) * 1992-04-30 1998-08-20 株式会社小糸製作所 光束パターン可変型４灯式前照灯
DE4313914C2 (de) * 1993-04-28 2003-05-08 Bosch Gmbh Robert Kraftfahrzeugscheinwerfereinrichtung mit variierbarer Beleuchtungsstärkeverteilung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0738904A1 (fr) 1995-04-19 1996-10-23 MAGNETI MARELLI S.p.A. Dispositif d'illumination adaptatif, en particulier phare de véhicule

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1398562A1 (fr) * 2002-09-11 2004-03-17 ERCO Leuchten GmbH Luminaire produisant un cone lumineux nettement délimité
US7121693B2 (en) 2002-09-11 2006-10-17 Erco Leuchten Gmbh Lamp, especially for illuminating interiors
EP1577608A2 (fr) * 2004-03-16 2005-09-21 Schefenacker Vision Systems Germany GmbH Luminaire avec une structure optique pour influencer le rayonnement
EP1577608A3 (fr) * 2004-03-16 2006-11-15 Schefenacker Vision Systems Germany GmbH Luminaire avec une structure optique pour influencer le rayonnement
WO2015058227A1 (fr) * 2013-10-25 2015-04-30 Zizala Lichtsysteme Gmbh Module d'éclairage à micro-projection destiné à un projecteur de véhicule automobile
AT514967A1 (de) * 2013-10-25 2015-05-15 Zizala Lichtsysteme Gmbh Mikroprojektions-Lichtmodul für einen Kraftfahrzeugscheinwerfer
AT514967B1 (de) * 2013-10-25 2015-08-15 Zizala Lichtsysteme Gmbh Mikroprojektions-Lichtmodul für einen Kraftfahrzeugscheinwerfer
CN105637287A (zh) * 2013-10-25 2016-06-01 齐扎拉光***有限责任公司 用于机动车辆前灯的显微投影光模块
US9951919B2 (en) 2013-10-25 2018-04-24 Zkw Group Gmbh Microprojection lighting module for a motor vehicle headlight
CN105637287B (zh) * 2013-10-25 2018-09-18 Zkw集团有限责任公司 用于机动车辆前灯的显微投影光模块
CN109563976A (zh) * 2016-08-08 2019-04-02 市光工业株式会社 车辆用灯具
CN108954213A (zh) * 2017-05-18 2018-12-07 汽车照明罗伊特林根有限公司 具有包括微型投影仪的光模块的机动车前照灯
EP3404313A1 (fr) 2017-05-18 2018-11-21 Automotive Lighting Reutlingen GmbH Phare de véhicule automobile pourvu de module lumineux comportant des microprojecteurs
US10295137B2 (en) 2017-05-18 2019-05-21 Automotive Lighting Reutlingen Gmbh Motor vehicle headlight with a light module featuring a micro projector
DE102017110886A1 (de) 2017-05-18 2018-11-22 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit einem Mikroprojektoren aufweisenden Lichtmodul
DE102017112971A1 (de) 2017-06-13 2018-12-13 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit wenigstens zwei Ausgangsteillinsen aufweisenden Mikroprojektionsmodulen
CN109469881A (zh) * 2017-09-08 2019-03-15 法雷奥照明公司 光图案化装置、包括该光图案化装置的车灯及机动车辆
EP3453945A1 (fr) * 2017-09-08 2019-03-13 Valeo Vision Dispositif de formation de motif de lumière, lampe de véhicule le comprenant et véhicule à moteur
CN111094839A (zh) * 2017-09-27 2020-05-01 Zkw集团有限责任公司 带有具有细分的微型射入镜头的微型镜头***的机动车照明装置
CN111094839B (zh) * 2017-09-27 2022-04-15 Zkw集团有限责任公司 带有微型镜头***的机动车照明装置
DE102018101991B3 (de) 2018-01-30 2019-05-09 Automotive Lighting Reutlingen Gmbh Effizientes, Mikroprojektoren aufweisendes Projektionslichtmodul für einen Kraftfahrzeugscheinwerfer
EP3524873A1 (fr) 2018-01-30 2019-08-14 Automotive Lighting Reutlingen GmbH Module lumineux de projection efficace comportant des microprojecteurs pour un phare de véhicule automobile
WO2020074508A1 (fr) * 2018-10-09 2020-04-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Projecteur de feu de route
US11421846B2 (en) 2018-10-09 2022-08-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. High beam headlight
DE102020100624A1 (de) * 2020-01-14 2021-07-15 Zumtobel Lighting Gmbh Leuchtenoptikanordnung sowie Leuchte mit Leuchtenoptikanordnung
EP3851739A1 (fr) * 2020-01-14 2021-07-21 Zumtobel Lighting GmbH Systeme d'optique d'éclairage et éclairage pourvu de systeme d'optique d'éclairage
DE102020110900A1 (de) 2020-05-04 2021-11-04 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge

Also Published As

Publication number Publication date
ITTO980933A1 (it) 2000-05-05
IT1305161B1 (it) 2001-04-10
EP0999407A3 (fr) 2001-09-05

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