EP4078022B1 - Module de projection pour un phare de véhicule automobile - Google Patents

Module de projection pour un phare de véhicule automobile Download PDF

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Publication number
EP4078022B1
EP4078022B1 EP20803866.1A EP20803866A EP4078022B1 EP 4078022 B1 EP4078022 B1 EP 4078022B1 EP 20803866 A EP20803866 A EP 20803866A EP 4078022 B1 EP4078022 B1 EP 4078022B1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
projection module
edge
aperture
optically relevant
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.)
Active
Application number
EP20803866.1A
Other languages
German (de)
English (en)
Other versions
EP4078022A1 (fr
Inventor
Bernhard Mandl
Tobias Karas
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
ZKW Group 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 ZKW Group GmbH filed Critical ZKW Group GmbH
Publication of EP4078022A1 publication Critical patent/EP4078022A1/fr
Application granted granted Critical
Publication of EP4078022B1 publication Critical patent/EP4078022B1/fr
Active legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • 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
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/14—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users
    • F21W2102/15—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users wherein the light is emitted under L-shaped cut-off lines, i.e. vertical and horizontal cutoff lines

Definitions

  • it can be a projection module for realizing a high beam or a high beam distribution.
  • a light function is understood to mean the generation of a legally specified light distribution by the projection module or a motor vehicle headlight. Examples of such light distributions are the low-beam light distribution and the high-beam light distribution.
  • automatic high beam switching with a partial high beam function takes place by control, which is provided so that a part of the high beam distribution remains activated despite preceding and/or oncoming traffic.
  • the projection module or the motor vehicle headlight or a motor vehicle headlight system generates a non-illuminated sub-area in the high beam distribution where other road users are located, so that other road users are not dazzled, for example - if there is a left and a right headlight, which respectively generate part of a common high beam distribution - these parts are pivoted apart, with an unilluminated area being created between these parts, in which the oncoming or preceding traffic is positioned.
  • the non-illuminated area can no longer be enlarged by swiveling the parts of the high beam distribution apart, since the swivel angle is too large.
  • one of the headlights such as the left headlight, must be turned off to increase the unlit area.
  • Such a partially shaded high beam distribution is referred to below as a partial high beam distribution, which is generally generated by a single motor vehicle headlight or the projection module in this motor vehicle headlight.
  • Such projection modules are realized or implemented in different versions in motor vehicle headlights.
  • EP 2 982 901 A1 discloses a well-known projection module for a motor vehicle headlight. It is an object of the invention to provide an improved projection light module. This object is achieved in that the projection module comprises an additional screen which is set up to be arranged vertically below the beam screen when the projection module is used as intended in a motor vehicle headlight and has a vertically extending first optically relevant screen edge which is spaced from the optical axis is arranged, wherein the first optically relevant screen edge is set up to partially shade light from the second light source, so that a partial high beam distribution can be generated, and wherein the additional screen has a contact section on which the additional screen rests on the beam screen, the first optically relevant screen edge in vertical extension in the direction of the beam stop has an end which is at a distance from the beam stop, and wherein the additional stop has a second optically relevant stop edge which extends from the end of the first optically relevant stop edge to the contact section, with a distance between the second optically relevant aperture edge in the vertical direction to the beam aperture defines
  • the terms refer to a location or an orientation, such as “horizontal”, “vertical”, “in the horizontal direction”, “in the vertical direction”, “top”, “bottom”, “front”, “back”. “, “underneath”, “above” etc. for a proper installation position of the projection module in question in a motor vehicle headlight.
  • the additional screen is provided with a gap or slot. This gap, in conjunction with an increase or reduction, enables the partial high beam or the partial high beam distribution to be approved worldwide.
  • the arrangement can be mirrored about the sagittal plane.
  • the gap is set up to generate a segment in the partial high beam distribution, which segment extends horizontally from -3.5° to a maximum of -12°, preferably to a maximum of -6°, preferably to a maximum of -5° , and extends vertically up to 2°, preferably up to 1°, preferably up to 0.2° on a measuring screen.
  • Rigid is understood to mean that the radiation stop and the additional stop are connected to one another in such a way that relative movements should be prevented or not possible as far as possible.
  • the first optically relevant screen edge of the additional screen is spaced apart in the direction of the optical axis of the projection lens, the distance being 1 mm, preferably 8/10 mm.
  • distance also includes such a distance at which the first optically relevant aperture edge of the additional aperture is spaced in the direction of the optical axis to or opposite to the arrangement direction of the projection lens.
  • Such a distance is intended to improve the light-dark boundary of the partial high beam distribution or the segment that can be generated in the partial high beam distribution in such a way that color fringes that occur are intended to be reduced.
  • the rule is that the greater the distance mentioned above, the more bluish the color fringe of the light-dark boundary appears.
  • the additional screen has at least one hole for a signal light distribution. So only the generation of individual areas or points for the signal light distribution is provided.
  • the contact section can be in the form of a fastening section, on which the additional diaphragm is fastened to the radiation diaphragm.
  • FIG. 1 shows a projection module 10 for a motor vehicle headlight, which projection module 10 comprises a first light source 110 and a second light source 120 and a beam shield 200 , which is set up to be arranged horizontally when the projection module 10 is used as intended in a built-in motor vehicle headlight, and an optically relevant Has aperture edge 210 for generating an asymmetrical light-dark boundary.
  • the first light source 110 is arranged on an upper side of the beam shield 200 and, in combination with the optically relevant diaphragm edge 210 of the beam shield 200 , contributes to generating a low beam distribution, the second light source 120 being arranged on an underside of the beam shield 200 and to generating a high beam distribution contributes.
  • the projection module 10 also includes a projection lens 300 with an optical axis A and a focal surface F for projecting a light distribution in a main emission direction X in front of the projection module 10, with the diaphragm edge 210 of the beam diaphragm 200 being essentially in the Focal surface F of the projection lens 300 is arranged, and wherein the optical axis A with the main emission direction X coincides.
  • the projection module 10 includes an additional screen 200 (in 1 not drawn), which in 2 can be seen in more detail and is set up to be arranged vertically below the beam diaphragm 200 when the projection module 10 is used as intended in a motor vehicle headlight and has a vertically extending first optically relevant diaphragm edge 410 which is arranged at a distance from the optical axis A. 2 shows the beam stop 200 with the additional stop 400 in an oblique view from behind and from below.
  • additional screen 200 in 1 not drawn
  • the first optically relevant aperture edge 410 is set up to partially shade light from the second light source 120 so that a partial high beam distribution can be generated.
  • the additional screen 400 has a fastening section 430 , on which the additional screen 400 is fastened to the radiation screen 200 , the radiation screen 200 and the additional screen 400 forming an inherently rigid composite screen.
  • the first optically relevant aperture edge 410 has an end 411 in the vertical extension in the direction of the beam aperture 200 , which end 411 is at a distance from the beam aperture 200 .
  • the additional screen 400 also has a second optically relevant screen edge 420 , which extends from the end 411 of the first optically relevant screen edge 410 to the fastening section 430 , as in FIG 4 is sketched.
  • the second optically relevant aperture edge 420 defines a gap in a projection or an orthogonal projection onto the beam aperture 200 , which gap is set up in combination with the second light source 120 to generate a segment in the partial high beam distribution.
  • the gap is defined by the distance between the second optically relevant aperture edge 420 and the radiation aperture 200 in the vertical direction or in the direction in which the additional aperture 400 extends.
  • figure 5 shows a sketchy view of the projection module 10 from below, whereby it can be seen that the first optically relevant, vertical aperture edge 410 and the end 411 of the aperture edge 410 are at a distance from the optical axis A of the projection lens, the distance 440 formed in this way being 1 mm, preferably 8 /10 mm, is large.
  • the additional screen 400 is arranged orthogonally to the optical axis A of the projection lens 300 .
  • the focal surface F of the projection lens 300 is curved, with the path of the optically relevant diaphragm edge 210 of the radiation diaphragm 200 essentially following the curved focal surface F.
  • FIG. 6 shows a partial high beam distribution from the prior art or from an example in which the first optically relevant, vertical screen edge 410 of the additional screen 400 would extend vertically all the way to the beam screen 200 . It can be seen that the first optically relevant panel edge of the additional panel shades the high beam distribution horizontally at - 3.5°
  • FIG. 7 shows a partial high beam distribution which can be generated by the projection module 10 according to the invention, the previously mentioned gap, which is defined by the additional screen, being set up to generate a segment 500 in the partial high beam distribution, which segment 500 extends horizontally from -2° to a maximum of - 12°, preferably up to a maximum of -6°, preferably up to a maximum of -5°, preferably exactly up to a maximum of -3.5°, and extends vertically up to 2°, preferably up to 1°, preferably up to 0.2° on the measuring screen extends.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (10)

  1. Module de projection (10) pour un projecteur de véhicule automobile, lequel module de projection (10) comprend :
    - une première source lumineuse (110) et une deuxième source lumineuse (120),
    - un diaphragme de faisceau (200) qui est conçu pour être disposé horizontalement lors d'une utilisation conforme du module de projection (10) dans un projecteur de véhicule automobile intégré, et qui comprend un bord de diaphragme optiquement pertinent (210) pour générer une coupure clair-obscur asymétrique, la première source lumineuse (110) étant disposée sur une face supérieure du diaphragme de faisceau (200) et coopérant, en combinaison avec le bord de diaphragme (210) optiquement pertinent du diaphragme de faisceau (200), pour produire une répartition des feux de croisement, et la deuxième source lumineuse (120) étant disposée sur une face inférieure du diaphragme de faisceau (200) et coopérant pour produire une répartition des feux de route, et
    - au moins une lentille de projection (300) avec un axe optique (A) et une surface focale (F) pour projeter une répartition de lumière dans une direction de rayonnement principale (X) devant le module de projection (10), l'arête de diaphragme (210) du diaphragme de rayonnement (200) étant disposée essentiellement dans la surface focale (F) de la lentille de projection (300) pour produire une limite claire-obscure nette, et l'axe optique (A) coïncidant avec la direction de rayonnement principale (X),
    caractérisé en ce que
    le module de projection (10) comprend un diaphragme supplémentaire (400) qui est conçu pour être disposé verticalement sous le diaphragme de faisceau (200) lors d'une utilisation conforme du module de projection (10) dans un projecteur de véhicule automobile et qui présente un premier bord de diaphragme (410) optiquement pertinent s'étendant verticalement, qui est disposé à distance de l'axe optique (A), le premier bord de diaphragme optiquement pertinent (410) étant conçu pour occulter partiellement la lumière provenant de la deuxième source lumineuse (120), de sorte qu'une répartition partielle des feux de route peut être produite, et dans lequel
    le diaphragme supplémentaire (400) présente une section d'appui (430) sur laquelle le diaphragme supplémentaire (400) s'appuie sur le diaphragme de faisceau (200), le premier bord de diaphragme optiquement pertinent (410) présentant une extrémité (411) dans l'extension verticale en direction du diaphragme de faisceau (200), laquelle extrémité (411) présente une distance par rapport au diaphragme de faisceau (200), et le diaphragme supplémentaire (400) présentant un deuxième bord de diaphragme optiquement pertinent (420), qui s'étend depuis l'extrémité (411) du premier bord de diaphragme optiquement pertinent (410) jusqu'à la partie d'appui (430), une distance du deuxième bord de diaphragme optiquement pertinent (420) dans la direction verticale par rapport au diaphragme de faisceau (200) définissant une fente, laquelle fente, en combinaison avec la deuxième source lumineuse (120), est agencée pour produire un segment (500) dans la répartition partielle de la lumière à distance.
  2. Module de projection selon la revendication 1, caractérisé en ce que le premier bord de diaphragme (410) optiquement pertinent du diaphragme supplémentaire (400) est agencé pour ombrer horizontalement sur un écran de mesure la répartition de lumière de loin pouvant être générée à -5° à -1°, de préférence à - 3,5°.
  3. Module de projection selon l'une des revendications 1 ou 2, caractérisé en ce que la fente est agencée pour générer un segment (500) dans la distribution partielle de lumière lointaine, lequel segment (500) s'étend horizontalement de - 2° à - 12° maximum, de préférence à - 6° maximum, de préférence à - 5° maximum, et s'étend verticalement jusqu'à 2°, de préférence jusqu'à 1°, de préférence jusqu'à 0,2°, sur un écran de mesure.
  4. Module de projection selon la revendication 2 ou 3, caractérisé en ce que l'écran de mesure est situé à 25 m du module de projection.
  5. Module de projection selon l'une des revendications 1 à 4, caractérisé en ce que le diaphragme de faisceau (200) et le diaphragme auxiliaire (400) forment un diaphragme composite rigide en soi.
  6. Module de projection selon l'une des revendications 1 à 5, caractérisé en ce que la surface focale (F) de la lentille de projection (300) est incurvée, le tracé de l'arête de diaphragme (210) optiquement pertinente du diaphragme de rayonnement (200) suivant essentiellement la surface focale incurvée (F).
  7. Module de projection selon l'une des revendications 1 à 6, caractérisé en ce que le diaphragme supplémentaire (400) est disposé orthogonalement à l'axe optique (A) de la lentille de projection (300).
  8. Module de projection selon l'une des revendications 1 à 7, caractérisé en ce que le premier bord d'ouverture optiquement pertinent (410) du diaphragme supplémentaire (400) est espacé dans la direction de l'axe optique (A) de la lentille de projection (300), l'espacement (440) étant de 1 mm, de préférence de 8/10 mm.
  9. Module de projection selon l'une des revendications 1 à 8, caractérisé en ce que le diaphragme supplémentaire (400) comporte au moins un trou pour une distribution de lumière de signalisation.
  10. Module de projection selon l'une des revendications 1 à 9, caractérisé en ce que la section d'appui (430) est conçue comme une section de fixation sur laquelle l'écran supplémentaire (400) est fixé à l'écran de rayonnement (200).
EP20803866.1A 2019-12-20 2020-11-16 Module de projection pour un phare de véhicule automobile Active EP4078022B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19218697.1A EP3839327A1 (fr) 2019-12-20 2019-12-20 Module de projection pour un phare de véhicule automobile
PCT/EP2020/082182 WO2021121817A1 (fr) 2019-12-20 2020-11-16 Module de projection d'un phare de véhicule automobile

Publications (2)

Publication Number Publication Date
EP4078022A1 EP4078022A1 (fr) 2022-10-26
EP4078022B1 true EP4078022B1 (fr) 2023-08-16

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP19218697.1A Withdrawn EP3839327A1 (fr) 2019-12-20 2019-12-20 Module de projection pour un phare de véhicule automobile
EP20803866.1A Active EP4078022B1 (fr) 2019-12-20 2020-11-16 Module de projection pour un phare de véhicule automobile

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19218697.1A Withdrawn EP3839327A1 (fr) 2019-12-20 2019-12-20 Module de projection pour un phare de véhicule automobile

Country Status (6)

Country Link
US (1) US11629834B2 (fr)
EP (2) EP3839327A1 (fr)
JP (1) JP7366269B2 (fr)
KR (1) KR20220065876A (fr)
CN (1) CN114761729B (fr)
WO (1) WO2021121817A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009008631B4 (de) * 2009-02-12 2016-11-03 Automotive Lighting Reutlingen Gmbh Projektionsmodul für einen Kraftfahrzeugscheinwerfer
EP3211292B1 (fr) * 2016-02-22 2020-04-15 Excellence Optoelectronics (Dong Guan) Ltd. Module de phare de véhicule

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4749968B2 (ja) 2006-07-31 2011-08-17 株式会社小糸製作所 車両用前照灯
FR2919377B1 (fr) * 2007-07-25 2013-08-23 Valeo Vision Module optique a source lumineuse transverse pour projecteur automobile
JP5717565B2 (ja) * 2011-07-11 2015-05-13 株式会社小糸製作所 車両用照明灯具
JP6036497B2 (ja) 2013-04-08 2016-11-30 トヨタ自動車株式会社 燃料電池の検査装置および検査システム
DE102013207850A1 (de) * 2013-04-29 2014-10-30 Automotive Lighting Reutlingen Gmbh Lichtmodul für einen Kraftfahrzeugscheinwerfer
DE102014215785B4 (de) 2014-08-08 2016-03-31 Automotive Lighting Reutlingen Gmbh Projektionslichtmodul für einen Kraftfahrzeugscheinwerfer
JP6550934B2 (ja) 2015-06-02 2019-07-31 市光工業株式会社 車両用前照灯
CN206072926U (zh) * 2016-08-31 2017-04-05 南宁燎旺车灯股份有限公司 一种全新led远近光一体前照灯投影灯芯

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009008631B4 (de) * 2009-02-12 2016-11-03 Automotive Lighting Reutlingen Gmbh Projektionsmodul für einen Kraftfahrzeugscheinwerfer
EP3211292B1 (fr) * 2016-02-22 2020-04-15 Excellence Optoelectronics (Dong Guan) Ltd. Module de phare de véhicule

Also Published As

Publication number Publication date
EP4078022A1 (fr) 2022-10-26
KR20220065876A (ko) 2022-05-20
CN114761729A (zh) 2022-07-15
CN114761729B (zh) 2024-03-01
JP7366269B2 (ja) 2023-10-20
JP2023504556A (ja) 2023-02-03
US11629834B2 (en) 2023-04-18
WO2021121817A1 (fr) 2021-06-24
EP3839327A1 (fr) 2021-06-23
US20230052888A1 (en) 2023-02-16

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