EP1170546A1 - Elliptischer Scheinwerfer mit Strahlmodifikation durch Bewegung optischer Elemente - Google Patents

Elliptischer Scheinwerfer mit Strahlmodifikation durch Bewegung optischer Elemente Download PDF

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Publication number
EP1170546A1
EP1170546A1 EP01400577A EP01400577A EP1170546A1 EP 1170546 A1 EP1170546 A1 EP 1170546A1 EP 01400577 A EP01400577 A EP 01400577A EP 01400577 A EP01400577 A EP 01400577A EP 1170546 A1 EP1170546 A1 EP 1170546A1
Authority
EP
European Patent Office
Prior art keywords
source
reflector
relative
light
projector according
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Withdrawn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
EP01400577A
Other languages
English (en)
French (fr)
Inventor
Eric c/o Valeo Vision Blusseau
Benny c/o Valeo Vision Grigorescu
Alexis c/o Valeo Vision Dubrovin
Laurent c/o Valeo Vision Jeannot
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 Vision SAS
Original Assignee
Valeo Vision SAS
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 Vision SAS filed Critical Valeo Vision SAS
Publication of EP1170546A1 publication Critical patent/EP1170546A1/de
Withdrawn legal-status Critical Current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
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving 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

Definitions

  • the invention relates to elliptical headlamps for motor vehicles.
  • a projector of this kind generally includes a mirror having a first focus area in the vicinity of which is placed a light source and a second focus area in the vicinity of which concentrates the radiation of the source after reflection by the mirror.
  • a lens typically a convex plane spherical lens, is focused at neighborhood of the second focus area and projects this concentrated radiation on the road.
  • the invention aims to solve these drawbacks, that is to say to propose an elliptical type projector which has movable elements for modifying the shape of the light beam, but which is less tedious in construction and better optically defined beam.
  • a projector for motor vehicle comprising a light source, a reflector with two focal regions and a lens, the source being placed in one of the two focal regions so as to produce a spot of reflected light in the other focal region, and the lens being provided to transform this spot in a beam projected onto the road, characterized in that it comprises means for selectively moving the source relative to the reflector.
  • a small displacement of the source allows to obtain different beam shapes, corresponding for example to a passing beam of the type recommended in urban areas, or a passing beam recommended for motorways, to a beam of corner crossing, or also to a specially avoiding beam glare in wet conditions.
  • the elliptical type projector for passing beam comprises a light source 10, such as the filament of an incandescent lamp or the luminescent arc of a gas discharge lamp, which cooperates with a mirror 20 of the kind ellispsoidal to generate, in a concentration zone located at near the optical axis x-x of the mirror and in front of it, a spot light.
  • a light source 10 such as the filament of an incandescent lamp or the luminescent arc of a gas discharge lamp
  • This light spot is partially obscured by a cover or opaque screen 30 located in this concentration zone, and a lens plano-convex 40 projects towards the road the light spot thus partially obscured.
  • the mirror 20 can be a pure ellipsoid of revolution, or more generally adopt any geometry suitable for forming in the concentration zone the desired light spot.
  • the present mirror 20 is produced in accordance with the description detailed given in patent application FR 2 773 604.
  • the profile of the upper edge of the cover 30 is illustrated in FIG. 2, with three line segments 31a, 31b, and 31c of which the middle one is inclined at about 15 ° to ensure, in a manner known per se, the raising of cut.
  • a simple "V” could be provided with a segment horizontal adjoining an oblique segment, or a type cut in "Z" as used for example in the United States.
  • the mirror 20 is here designed so that the spot of maximum beam TC concentration is slightly shifted towards the straight with respect to the median vertical axis of reference v-v, so that well illuminate the side of the road (here, the right side).
  • the lamp 10 is here mounted on a base which is movable in the reflector bottom hole. More precisely we adopt a mounted base free to rotate along two axes of rotation transverse to each other and transverse to the x-x axis. Such a movable fastening in rotation is easily implementation, for example by fixing the rear of the base on an element forming a patella. The rotational movement around each of these two axes is achieved for example by two electric motors.
  • the lamp 10 can thus be selectively moved laterally, that is to say substantially horizontally and perpendicular to the axis optics x-x (arrow F1 in figure 1).
  • a first offset position of the lamp 10 is thus adopted, illustrated in dashes and designated by 10 'in Figure 1, in which the filament is 2mm to the right of the base position.
  • the area in the left half of the beam is reduced in intensity.
  • Such a modified beam therefore goes, in particular during a circulation on wet floors reduce the risk of driver glare opposed.
  • the lighting thus obtained is particularly suitable when the road is wet because it retains an effective beam shape while lowering the light concentration in a specific area exactly corresponding to the part of the light usually reflected by road to reach the eyes of the opposite driver.
  • the amplitude of the offset of the lamp 10 can vary depending on the reflector and lens used but this advantageous modification is typically found for a shift of the filament to the right of about 2 mm.
  • a traditional cross beam projector of the elliptical type can, using simple, economical and reliable means, be transformed into a dual-function projector which, by controlling an actuating motor from the vehicle dashboard, allows either to generate a beam of traditional crossing, that is to generate a beam of crossing modified for wet traffic.
  • the lighting is thus slightly enhanced in half left in the vicinity of the vertical central axis v-v, which has the effect increase the amount of light in the axis of the road and contribute to driver's visual comfort, especially on motorways where the distance transverse with the opposite conductors is higher.
  • the offset of the lamp 10 can, in accordance with the present invention, be implemented in a vertical direction to obtain particularly surprisingly, a beam specifically advantageous for urban traffic.
  • the invention finds application not only in a headlamp dedicated crossing, in which the cover 30 normally occupies a fixed position, but also in a dual-function projector crossing / road, in which the cover 30 can be retracted so as no longer obscure the light spot.

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)
EP01400577A 2000-07-03 2001-03-06 Elliptischer Scheinwerfer mit Strahlmodifikation durch Bewegung optischer Elemente Withdrawn EP1170546A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0008605 2000-07-03
FR0008605A FR2810934B1 (fr) 2000-07-03 2000-07-03 Projecteur elliptique a modification de faisceau par mouvement d'elements optiques

Publications (1)

Publication Number Publication Date
EP1170546A1 true EP1170546A1 (de) 2002-01-09

Family

ID=8852034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400577A Withdrawn EP1170546A1 (de) 2000-07-03 2001-03-06 Elliptischer Scheinwerfer mit Strahlmodifikation durch Bewegung optischer Elemente

Country Status (4)

Country Link
US (1) US6558030B2 (de)
EP (1) EP1170546A1 (de)
JP (1) JP2002042516A (de)
FR (1) FR2810934B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014134649A1 (de) * 2013-03-07 2014-09-12 Zizala Lichtsysteme Gmbh Beleuchtungsvorrichtung für einen fahrzeugscheinwerfer

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7287887B2 (en) 2004-07-29 2007-10-30 Koito Manufacturing Co., Ltd. Vehicle headlamp
DE102005020085A1 (de) * 2005-04-29 2006-11-09 Osram Opto Semiconductors Gmbh Kfz-Scheinwerfer
JP4531665B2 (ja) 2005-09-15 2010-08-25 株式会社小糸製作所 車両用前照灯
US7395768B2 (en) * 2006-11-29 2008-07-08 George Berend Freeman Blake Fertilizer spike injection tool
US8287150B2 (en) 2009-01-30 2012-10-16 Koninklijke Philips Electronics N.V. Reflector alignment recess
JP2013004167A (ja) * 2011-06-10 2013-01-07 Koito Mfg Co Ltd 車両用前照灯
US20130215635A1 (en) * 2012-02-22 2013-08-22 Osram Sylvania Inc. Automotive headlamp having a beam changing assembly
JP6274891B2 (ja) * 2014-02-03 2018-02-07 株式会社小糸製作所 車両用灯具
KR101934039B1 (ko) * 2017-01-11 2019-01-02 (주) 굿피앤씨 집광형 ｌｅｄ 광원 모듈
FR3099948B1 (fr) * 2019-07-15 2021-10-22 Valeo Vision Dispositif lumineux pour véhicule automobile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1262631A (fr) * 1960-04-19 1961-06-05 Lampe Norma Soc Auto Lampe Perfectionnement aux dispositifs de réglage des projecteurs et notamment pour véhicules automobiles
JPH0374001A (ja) * 1989-08-14 1991-03-28 Koito Mfg Co Ltd 車輌用前照灯
FR2704044A1 (fr) 1993-04-15 1994-10-21 Valeo Vision Projecteur du genre elliptique pour véhicule automobile.
US5707129A (en) 1993-10-13 1998-01-13 Koito Manufacturing Co., Ltd. Vehicular headlamp producing low beam having cut line controlled in accordance with condition of curved road
FR2773604A1 (fr) 1998-01-09 1999-07-16 Valeo Vision Projecteur du genre elliptique pour vehicule automobile

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01244934A (ja) * 1988-03-28 1989-09-29 Nissan Motor Co Ltd 車両用前照灯装置
DE19710632A1 (de) * 1997-03-14 1998-09-17 Bosch Gmbh Robert Scheinwerfer für Abblendlicht und Fernlicht für Fahrzeuge
FR2782550B1 (fr) * 1998-08-18 2001-04-13 Valeo Vision Projecteur de vehicule automobile muni de moyens pour emettre selectivement un faisceau pour circulation a droite, ou a gauche
JP3880748B2 (ja) * 1999-05-27 2007-02-14 株式会社小糸製作所 車両用前照灯

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1262631A (fr) * 1960-04-19 1961-06-05 Lampe Norma Soc Auto Lampe Perfectionnement aux dispositifs de réglage des projecteurs et notamment pour véhicules automobiles
JPH0374001A (ja) * 1989-08-14 1991-03-28 Koito Mfg Co Ltd 車輌用前照灯
FR2704044A1 (fr) 1993-04-15 1994-10-21 Valeo Vision Projecteur du genre elliptique pour véhicule automobile.
US5707129A (en) 1993-10-13 1998-01-13 Koito Manufacturing Co., Ltd. Vehicular headlamp producing low beam having cut line controlled in accordance with condition of curved road
FR2773604A1 (fr) 1998-01-09 1999-07-16 Valeo Vision Projecteur du genre elliptique pour vehicule automobile

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 235 (M - 1125) 17 June 1991 (1991-06-17) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014134649A1 (de) * 2013-03-07 2014-09-12 Zizala Lichtsysteme Gmbh Beleuchtungsvorrichtung für einen fahrzeugscheinwerfer
US9671080B2 (en) 2013-03-07 2017-06-06 Zkw Group Gmbh Lighting device for a vehicle headlight

Also Published As

Publication number Publication date
FR2810934A1 (fr) 2002-01-04
US6558030B2 (en) 2003-05-06
JP2002042516A (ja) 2002-02-08
FR2810934B1 (fr) 2002-09-13
US20020001197A1 (en) 2002-01-03

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