EP3412958A1 - Module d'éclairage pour un phare automobile - Google Patents

Module d'éclairage pour un phare automobile Download PDF

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Publication number
EP3412958A1
EP3412958A1 EP17382347.7A EP17382347A EP3412958A1 EP 3412958 A1 EP3412958 A1 EP 3412958A1 EP 17382347 A EP17382347 A EP 17382347A EP 3412958 A1 EP3412958 A1 EP 3412958A1
Authority
EP
European Patent Office
Prior art keywords
optical element
low beam
primary
lighting module
type primary
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Withdrawn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
EP17382347.7A
Other languages
German (de)
English (en)
Inventor
Sergio Donoso
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.)
Valeo Iluminacion SA
Original Assignee
Valeo Iluminacion SA
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 Valeo Iluminacion SA filed Critical Valeo Iluminacion SA
Priority to EP17382347.7A priority Critical patent/EP3412958A1/fr
Publication of EP3412958A1 publication Critical patent/EP3412958A1/fr
Withdrawn legal-status Critical Current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
    • F21S41/60—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
    • F21S41/10—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
    • 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
    • F21S41/24—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
    • F21S41/20—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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • 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
    • 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
    • F21W2102/17—Arrangement or contour of the emitted light for regions other than high beam or low beam
    • F21W2102/19—Arrangement or contour of the emitted light for regions other than high beam or low beam for curves

Definitions

  • the present invention belongs to the field of lamps for automotive vehicles, and more specifically, to the lamps using laser diodes as a light source.
  • LEDs Light emitting diodes
  • laser diodes have been intended to provide lighting functions in automotive headlamps since several years ago.
  • the invention provides a solution for this problem in a lighting module for an automotive headlamp according to claim 1.
  • Preferred embodiments of the invention are defined in dependent claims.
  • the invention provides a lighting module for an automotive headlamp, the lighting module comprising
  • the term “laterally beyond” refers to the direction from the low beam light source to the side beam light source, substantially perpendicular to the direction where the primary low beam is projected.
  • the primary low beam rays corresponding to the front edge must be construed as the primary low beam rays resulting from a limit angle of projection of the low beam light source below which the primary low beam is reflected by the diaphragm element.
  • the diaphragm element does not need to be an opaque element, but just adapted for reflecting at least part of the secondary low beam (such as a transparent element intended for reflecting light by total internal reflection).
  • This lighting module provides a way of incorporating cornering light functionalities into a single lighting module.
  • a compact lighting module according to the invention provides low beam and cornering light, i.e., side beam, projected by the same main optical element.
  • the main optical element comprises a first portion suitable for receiving the primary side beam and projecting the side beam pattern, and a second portion suitable for receiving the part of the primary low beam which has not been reflected by the diaphragm element and projecting the low beam pattern.
  • the main optical element of these embodiments is therefore optimized to perform these two functions: low beam and side beam.
  • low beam and side beam there is no need of separate optical elements, but these two functions may be carried out by a single part.
  • the main optical element is an outer lens.
  • the outer lens of an automotive lighting device may perform this function, in such a way that no more additional parts are needed.
  • the second-type primary optical element is suitable for providing cornering light functions, all-weather light or fixed bending light functions.
  • the second-type primary optical element are located at both sides of the first-type primary optical element.
  • This location is optimal for optical elements intended to project a side beam, since this projected side beam reaches the main optical element in an angle which is suitable for being projected as a side beam pattern.
  • the lighting module further comprises a main heat sink, intended to dissipate heat from the low beam and side beam light sources.
  • a main heat sink helps to improve the global heat dissipation of the module, since current light sources have severe restrictions regarding heat dissipation and operation conditions.
  • At least one of the first-type primary optical element and second-type primary optical element is a collimator.
  • a collimator provides an optimal optical behaviour for this application.
  • the collimator is able to transform the divergent beams of light coming from a unique light source into a parallel distribution of light beams.
  • the diaphragm element is an opaque folder.
  • the diaphragm element is an element having a transparent surface, such as light guide, the transparent surface playing the role of diaphragm falling back on the principle of total internal reflection.
  • Another inventive aspect of this invention provides an automotive headlamp comprising a lighting module according to the previous inventive aspect.
  • the automotive lighting device further comprises a housing accommodating the lighting module and auxiliary systems.
  • Figure 1 shows a top view of a particular embodiment of an automotive lighting module according to the invention, as seen from above.
  • This lighting module 1 comprises first-type primary optical elements 2 and second-type primary optical elements 3, different from the first-type primary optical elements 2.
  • This lighting device 1 further comprises low beam light sources 21 and side beam light sources 31.
  • Each low beam light source 21 is adapted for emitting a low beam, and is oriented so that at least part of the low beam is directed to one of the first-type primary optical elements 2, so that the first-type primary optical elements 2 are intended to project a primary low beam.
  • Each side beam light source 31 is adapted for emitting a side beam, and is oriented so that at least part of the side beam is directed to one of the second-type primary optical elements 3, so that the second-type primary optical elements 3 are intended to project a primary side beam.
  • This lighting device 1 also comprises a diaphragm element 4 with a front edge 41.
  • the diaphragm element 4 is arranged for receiving the primary low beams, in such a way that when the primary low beams are projected by the first-type primary optical element 2, part of the primary low beams are reflected by the diaphragm element 4.
  • the lighting device 1 also comprises a main optical element 5, suitable for receiving the primary side beam and projecting a side beam pattern, and suitable for receiving a part of the primary low beam which has not been reflected by the diaphragm element 4 and projecting a low beam pattern, wherein primary low beam rays corresponding to the front edge 41 are projected as a cut-off line of the low beam pattern.
  • a main optical element 5 suitable for receiving the primary side beam and projecting a side beam pattern, and suitable for receiving a part of the primary low beam which has not been reflected by the diaphragm element 4 and projecting a low beam pattern, wherein primary low beam rays corresponding to the front edge 41 are projected as a cut-off line of the low beam pattern.
  • the first-type primary optical element 2, the second-type primary optical element 3, the diaphragm element 4 and the main optical element 5 are integral to each other. This means that these elements are portions of a single part, which is manufactured taking into account the relative distances between each element, and the tolerances that must be fulfilled in order to obtain a valid product.
  • the main optical element 5 comprises a first portion 51 suitable for receiving the primary side beam and projecting a side beam pattern, and a second portion 52 suitable for receiving the part of the primary low beam which has not been reflected by the diaphragm element 4 and projecting a low beam pattern.
  • the main optical element 5 which is common for both beams, comprises two different portions in order to adapt to the particular shapes of said final beams.
  • the main optical element 5 is an outer lens.
  • the second-type primary optical element 3 is suitable for providing cornering light functions, all-weather light or fixed bending light functions.
  • the position laterally beyond the first-type primary optical elements 2, at their both sides, is more suitable for cornering light functions, but different positions would be relative for different functionalities, all of them within the scope of the present invention.
  • a main heat sink 6 is in charge of the dissipation of heat coming from the low beam and side beam light sources.
  • This heat sink 6 contains a radiator to evacuate the heat which is dissipated from the light sources into the ambient air.
  • first-type primary optical element 2 and the second-type primary optical element 3 a group of collimators may perform this function in a suitable manner.
  • other optical elements which may be more adapted to different types of light sources or to different lighting functionalities, should also be considered as within the scope of this invention.
  • Figure 2 shows an automotive headlamp 10 comprising the lighting module 1 described in the previous figure.
  • Such an automotive headlamp 10 may be installed in an automotive vehicle and perform the required functionalities in a usually smaller size than the automotive headlamps 10 which comprises separate modules for low beam and side beam. Further, the final light beam projected by the outer lens 5 and limited by the diaphragm element 4 is more accurately defined, since the relative positions between the different light sources are defined by the shape of the module, without being influenced by any assembly process.

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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)
EP17382347.7A 2017-06-07 2017-06-07 Module d'éclairage pour un phare automobile Withdrawn EP3412958A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17382347.7A EP3412958A1 (fr) 2017-06-07 2017-06-07 Module d'éclairage pour un phare automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17382347.7A EP3412958A1 (fr) 2017-06-07 2017-06-07 Module d'éclairage pour un phare automobile

Publications (1)

Publication Number Publication Date
EP3412958A1 true EP3412958A1 (fr) 2018-12-12

Family

ID=59078003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17382347.7A Withdrawn EP3412958A1 (fr) 2017-06-07 2017-06-07 Module d'éclairage pour un phare automobile

Country Status (1)

Country Link
EP (1) EP3412958A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110736072A (zh) * 2019-11-01 2020-01-31 华域视觉科技(上海)有限公司 前照灯照明模组及车辆
WO2023043628A1 (fr) * 2021-09-20 2023-03-23 Apple Inc. Lampes multimodes
US11879610B2 (en) 2021-09-20 2024-01-23 Apple Inc. Multi-mode lights

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2443737A (en) * 2006-11-10 2008-05-14 Ford Global Tech Llc An adaptive front lighting system for a vehicle
DE102007052696A1 (de) * 2007-01-11 2008-07-17 Zizala Lichtsysteme Gmbh Totalreflexionsoptik-System für einen Scheinwerfer oder eine Lichteinheit eines Kraftfahrzeuges
DE102008015510A1 (de) * 2007-03-29 2008-10-02 Koito Manufacturing Co., Ltd. Leuchteneinheit eines Fahrzeugscheinwerfers
DE102010046021A1 (de) * 2010-09-18 2012-03-22 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit einem Mehrfunktions-Projektionsmodul
EP2523022A1 (fr) * 2011-05-09 2012-11-14 Automotive Lighting Reutlingen GmbH Module d'éclairage pour un phare de véhicule automobile destiné à la production d'une distribution lumineuse variable et phare de véhicule automobile doté d'un tel module d'éclairage
EP2682671A2 (fr) * 2012-07-04 2014-01-08 Automotive Lighting Reutlingen GmbH Module d'éclairage
JP2014107048A (ja) * 2012-11-26 2014-06-09 Koito Mfg Co Ltd 車両用前照灯

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2443737A (en) * 2006-11-10 2008-05-14 Ford Global Tech Llc An adaptive front lighting system for a vehicle
DE102007052696A1 (de) * 2007-01-11 2008-07-17 Zizala Lichtsysteme Gmbh Totalreflexionsoptik-System für einen Scheinwerfer oder eine Lichteinheit eines Kraftfahrzeuges
DE102008015510A1 (de) * 2007-03-29 2008-10-02 Koito Manufacturing Co., Ltd. Leuchteneinheit eines Fahrzeugscheinwerfers
DE102010046021A1 (de) * 2010-09-18 2012-03-22 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit einem Mehrfunktions-Projektionsmodul
EP2523022A1 (fr) * 2011-05-09 2012-11-14 Automotive Lighting Reutlingen GmbH Module d'éclairage pour un phare de véhicule automobile destiné à la production d'une distribution lumineuse variable et phare de véhicule automobile doté d'un tel module d'éclairage
EP2682671A2 (fr) * 2012-07-04 2014-01-08 Automotive Lighting Reutlingen GmbH Module d'éclairage
JP2014107048A (ja) * 2012-11-26 2014-06-09 Koito Mfg Co Ltd 車両用前照灯

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110736072A (zh) * 2019-11-01 2020-01-31 华域视觉科技(上海)有限公司 前照灯照明模组及车辆
WO2023043628A1 (fr) * 2021-09-20 2023-03-23 Apple Inc. Lampes multimodes
US11879610B2 (en) 2021-09-20 2024-01-23 Apple Inc. Multi-mode lights

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