EP1663708A1 - Projecteur - Google Patents

Projecteur

Info

Publication number
EP1663708A1
EP1663708A1 EP04740637A EP04740637A EP1663708A1 EP 1663708 A1 EP1663708 A1 EP 1663708A1 EP 04740637 A EP04740637 A EP 04740637A EP 04740637 A EP04740637 A EP 04740637A EP 1663708 A1 EP1663708 A1 EP 1663708A1
Authority
EP
European Patent Office
Prior art keywords
light
reflector
light source
headlight according
light guide
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Withdrawn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
EP04740637A
Other languages
German (de)
English (en)
Inventor
Helmut Erdl
Martin Enders
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1663708A1 publication Critical patent/EP1663708A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B60Q1/0052—Spatial arrangement of several lamps in relation to each other concentric
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/30—Daytime running lights [DRL], e.g. circuits or arrangements therefor
    • 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

Definitions

  • the invention relates to a headlamp, in particular vehicle headlamps, with a light source arranged in front of a reflector and a light guide which is designed as an elongated light decoupling element, which is at least partially adjacent to an edge of the reflector, with a light exit surface facing away from the reflector.
  • Vehicle headlights are known from EP 0 900 694 A2 and from DE 100 40 302 A1, which have a light source for generating a headlight light, which is located upstream of a reflector.
  • the known headlights have a light guide which, as an elongated light decoupling element, is adjacent to an edge of the reflector at least in regions.
  • a headlight light such as daytime running light or low beam or high beam, is generated with the light source in front of the reflector.
  • light is coupled into the light guide via a second light source and is emitted or coupled out as signal light.
  • the object of the present invention is therefore to improve the known headlights with light coupling via an elongated light guide in such a way that a homogeneous luminance of high luminous intensity with formable or directed light Distribution is made possible, as is required, for example, to generate a daytime running light.
  • the object is achieved in connection with the preamble of claim 1 in that the inside of the reflector facing the light source is designed, at least in some areas, in such a way that it forms a first focal point at the location of the light source and that light emitted by the light source faces away from one of the light exit surface Light entry surface of the light decoupling element is reflected.
  • the light from the light source is guided by the reflector to the light entry surface of the light guide or light decoupling element, so that the light guide is illuminated practically over its entire length.
  • the relatively high optical losses due to coupling, propagation and deflection in the light guide are practically eliminated or are considerably reduced.
  • the uniform light distribution on the back or light entry surface of the light guide also prevents a reduction in light intensity due to temperature-limited coupling. In this way, a high light intensity can be achieved with malleable and homogeneous light distribution. This achieves the high efficiency that is important for daytime running lights, dipped beam and high beam.
  • the inside of the reflector is designed as a section of a rotating body, the contour of which results from a rotation about a headlight axis of an ellipse which is set at an angle of less than 90 ° in the radiation direction with respect to the headlight axis and whose first focal point F1 is at the location of the Light source and its second focal point F2 is arranged adjacent to the light entry surface of the light decoupling element and forms an annular focal line due to the rotation.
  • the light guide is expediently ring-shaped.
  • the entire light from the light source or the reflector is thus directed to the light entry surface of the light guide, can couple into the light guide via the light entry surface and can exit the light exit surface in a correspondingly directed manner. This contributes to a further increase in the efficiency of the vehicle registration thrower at.
  • the light guide can be used for further modification of the light distribution by an appropriate choice of its surfaces - as optical surfaces
  • the light guide has a light coupling point with an upstream second light source for mirroring light.
  • the light guide can additionally be used as a signal light in a manner known per se. This makes it easy to achieve a dual function of the headlamp.
  • the light guide is designed as a first light decoupling element which merges into a second light decoupling element of an adjacent headlight.
  • the light decoupling element is designed such that part of the light coupled into the first light decoupling element can be decoupled via the second light decoupling element.
  • a second light decoupling element of an adjacent headlight can thus be supplied with a luminous flux via the first light decoupling element.
  • the light emitted by the light guide can be used as parking light or position light by dimming the light source.
  • the area enclosed by the light guide can be used for further light functions.
  • another light function can be achieved to save space.
  • the light source has a first coil for generating the light to be coupled into the light guide and a second coil upstream of the first coil in the radiation direction for generating light for a further light function in the first focal point.
  • a lens for the further light be arranged function.
  • the light from the second filament can be radiated directly into the lens.
  • the reflector construction can also be simplified as a result. If necessary, it is also possible to shield the second filament towards the reflector or towards the first filament or to arrange two separate light sources or lamps one behind the other, which are optionally attached to a common lamp holder. This would avoid special lamps.
  • the lens is designed and / or arranged opposite the second coil in such a way that it generates a laterally deflected cornering light.
  • the lens axis is offset from the headlight axis and / or contains prisms on the lens surface, a switchable cornering light / cornering light can be produced simply and inexpensively.
  • FIG. 1 shows a sectional side view of a headlight with radiation via a light-guiding element in front of a reflector
  • FIG. 2 shows a plan view of a headlamp in section with light emission via a light guide element and light emission of a second coil via a lens for generating cornering light
  • FIG. 3 a side view in section for the construction of the reflector as an elliptical rotating body
  • Figure 4 a front view of the light guide of Figure 1
  • Figure 5 a front view of two connected light guides of an adjacent pair of headlights.
  • a headlight 1 essentially consists of a reflector 2, a light source 3 and a light guide 4.
  • the reflector 2 has an inside 5, which is designed as a section of a rotating body, the contour of which results from a rotation about a headlight axis 6 of an ellipse 7.
  • the ellipse 7 is set at an angle a smaller than 90 °.
  • the first focal point F1 is arranged at the location of the light source 3 or its filament 8.
  • the second focal point F2 of the ellipse 7 is arranged adjacent to a light entry surface 9 of the light guide 4 and forms an annular focal line due to the rotation of the ellipse.
  • the light guide 4 is designed as an elongated, ring-shaped light decoupling element 10, which is arranged in front of the reflector 2 in a light emission direction 11.
  • the light decoupling element 10 points towards the reflector 2, the light entry surface 9 and a light exit surface 12 on its side facing away from the light entry surface 9.
  • the cross-section of the light decoupling element 10 can have a lenticular contour with an optically effective fine structure on its surface.
  • the light emanating from the light source 3 in the focal point F1 of the reflector 2 is collected by the reflector in the focal point F2 or in the focal line, coupled into the light decoupling element via the light entry surface 9 and decoupled in a directed manner via its light exit surface 12.
  • the light emitted by the light guide 4 or the light decoupling element 10 can thus be used as daytime running lights.
  • dimming the light source 3 the light emitted by the light guide 4 can also be used as parking light or position light.
  • the light guide 4 can also have a lateral light coupling element 13, via which the light from a second light source upstream of the light coupling element 13 is reflected in order to generate parking or position light when the light source 3 is switched off.
  • the light guide 4 is designed as a first light decoupling element 15 which merges into a second light decoupling element 16 of the light guide 4'. As a result, part of the light coupled into the first light coupling element 15 is coupled out via the second light coupling element 16 of the light guide 4 '.
  • the area enclosed by the light guide 4 is used for further light functions.
  • the light source 3 ' has a first filament 8', the light of which is fed to the light guide 4 via the reflector 2.
  • the light source 3 ' also has a second filament 17, which is arranged upstream in the light emission direction 11 of the first filament 8', the light of which is fed directly to a lens 18 and emitted via the latter.
  • the lens 18 is offset with its optical axis 19 with respect to the headlight axis in such a way that it emits the incident light in a lateral light emission direction 20 as curve light.
  • the second helix 17 can also be used for other light functions if the lens 18 is designed and arranged accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un projecteur (1), en particulier un projecteur de véhicule, comprenant une source de lumière (3, 3 ) disposée en amont d'un réflecteur (2), et un guide d'onde optique (4) qui se présente sous la forme d'un élément de découplage de lumière allongé (10) qui se trouve au moins en partie au voisinage d'un bord du réflecteur et présente une surface de sortie de lumière (12) opposée au réflecteur. Selon l'invention, le côté intérieur (5) du réflecteur (2), dirigé vers la source de lumière (3, 3 ), est constitué au moins partiellement de sorte qu'il forme à l'emplacement de la source de lumière (3, 3 ), un premier point focal (F1), et réfléchit la lumière émise par la source de lumière (3, 3 ), vers une surface d'entrée de lumière (9) de l'élément de découplage de lumière, qui est opposée à la surface de sortie de lumière (12).
EP04740637A 2003-09-24 2004-07-03 Projecteur Withdrawn EP1663708A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10344130A DE10344130A1 (de) 2003-09-24 2003-09-24 Scheinwerfer
PCT/EP2004/007299 WO2005039924A1 (fr) 2003-09-24 2004-07-03 Projecteur

Publications (1)

Publication Number Publication Date
EP1663708A1 true EP1663708A1 (fr) 2006-06-07

Family

ID=34353036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04740637A Withdrawn EP1663708A1 (fr) 2003-09-24 2004-07-03 Projecteur

Country Status (5)

Country Link
US (1) US7367702B2 (fr)
EP (1) EP1663708A1 (fr)
JP (1) JP2007507066A (fr)
DE (1) DE10344130A1 (fr)
WO (1) WO2005039924A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057131A1 (de) 2004-11-26 2006-06-08 Bayerische Motoren Werke Ag Fahrzeugscheinwerfer
DE102006013654B4 (de) * 2006-03-24 2014-02-13 Automotive Lighting Reutlingen Gmbh Scheinwerfer
DE102006051059A1 (de) * 2006-10-30 2008-05-08 Bayerische Motoren Werke Ag Fahrzeugscheinwerfer
DE102006051060A1 (de) * 2006-10-30 2008-05-08 Bayerische Motoren Werke Ag Fahrzeugscheinwerfer
DE102006051058A1 (de) * 2006-10-30 2008-05-08 Bayerische Motoren Werke Ag Fahrzeugscheinwerfer
AT503926B1 (de) † 2007-01-22 2008-02-15 Zizala Lichtsysteme Gmbh Beleuchtungsvorrichtung zur erzeugung von zumindest einer lichtfunktion für eine lichteinheit oder einen scheinwerfer eines kraftfahrzeuges
JP5009031B2 (ja) 2007-04-10 2012-08-22 株式会社小糸製作所 車両用灯具ユニット
ATE517291T1 (de) * 2007-05-23 2011-08-15 Koninkl Philips Electronics Nv Fahrzeugleuchte
JP5363235B2 (ja) * 2009-08-04 2013-12-11 株式会社小糸製作所 車両用灯具
DE102010013821B4 (de) 2010-04-03 2016-09-15 Volkswagen Ag Leuchtenvorrichtung und Verfahren zur Erzeugung einer ersten und einer zweiten Lichtfunktion für ein Fahrzeug
JP5721367B2 (ja) * 2010-08-24 2015-05-20 株式会社小糸製作所 車両用灯具
DE102011104055A1 (de) 2011-06-11 2012-12-13 Volkswagen Aktiengesellschaft Leuchteinrichtung für ein Fahrzeug
CN104251434A (zh) * 2013-06-27 2014-12-31 鸿富锦精密工业（深圳）有限公司 机动车照明装置
FR3009064B1 (fr) 2013-07-25 2015-07-24 Valeo Systemes Thermiques Dispositif lumineux
FR3009063B1 (fr) * 2013-07-25 2018-03-30 Valeo Systemes Thermiques Dispositif lumineux

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4479699A (en) * 1981-03-12 1984-10-30 Richard Bolte Wind driven rotatable reflector for vehicles
JPH01143005U (fr) * 1988-03-28 1989-09-29
US5058985A (en) * 1990-07-23 1991-10-22 General Electric Company Coupling means between a light source and a bundle of optical fibers and method of making such coupling means
GB9108033D0 (en) * 1991-04-16 1991-06-05 Britax Vega Ltd Vehicle lamp
GB9216333D0 (en) * 1992-07-31 1992-09-16 Kodak Ltd Optical means for annular illumination of a spot
DE19652159B4 (de) * 1996-12-14 2006-05-18 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für Fahrzeuge
DE19739173A1 (de) * 1997-09-06 1999-03-11 Hella Kg Hueck & Co Signalleuchte für Fahrzeuge
US6186650B1 (en) * 1997-12-09 2001-02-13 Cooper Automotive Products, Inc. Vehicle headlamp with beamforming waveguide
DE19814480B4 (de) * 1998-04-01 2006-07-20 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Fahrzeuge nach dem Projektionsprinzip
JP3005955B2 (ja) * 1998-04-17 2000-02-07 スタンレー電気株式会社 灯 具
KR100310055B1 (ko) * 1998-10-28 2001-12-17 구자홍 광디스크기록/재생기의기록속도가변장치및방법
JP2000251508A (ja) * 1999-02-25 2000-09-14 Stanley Electric Co Ltd 車両用灯具
DE19946297A1 (de) * 1999-09-28 2001-04-12 Philips Corp Intellectual Pty Glühlampe
FR2804493B1 (fr) * 2000-01-31 2002-04-26 Renault Projecteur de feu de signalisation de vehicule automobile a guides de lumiere
DE10040302B4 (de) * 2000-08-17 2007-04-05 Hella Kgaa Hueck & Co. Signalleuchte eines Fahrzeugs
DE10114123A1 (de) * 2001-03-22 2002-09-26 Hella Kg Hueck & Co Scheinwerfer für Fahrzeuge
JP2002291697A (ja) * 2001-03-30 2002-10-08 Fuji Photo Optical Co Ltd 交流点灯光源を備えた電子内視鏡装置
DE10115868B4 (de) * 2001-03-30 2010-01-07 Automotive Lighting Reutlingen Gmbh Scheinwerfereinheit eines Kraftfahrzeugs
JP2002293189A (ja) * 2001-03-30 2002-10-09 Toyoda Gosei Co Ltd ヘッドランプガーニッシュ
JP2003123519A (ja) * 2001-10-15 2003-04-25 Honda Motor Co Ltd プロジェクタ型ヘッドランプ
DE10205694B4 (de) * 2002-02-13 2010-01-21 Bayerische Motoren Werke Aktiengesellschaft Scheinwerfer eines Fahrzeugs
DE10206925A1 (de) * 2002-02-19 2003-09-11 Volkswagen Ag Scheinwerfereinheit für Fahrzeuge
US6910791B2 (en) * 2002-03-15 2005-06-28 Stanley Electric Co., Ltd. Headlight

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005039924A1 *

Also Published As

Publication number Publication date
US20060227568A1 (en) 2006-10-12
US7367702B2 (en) 2008-05-06
DE10344130A1 (de) 2005-04-21
WO2005039924A1 (fr) 2005-05-06
JP2007507066A (ja) 2007-03-22

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