EP1077347B1 - Projecteur pour véhicule - Google Patents

Projecteur pour véhicule Download PDF

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Publication number
EP1077347B1
EP1077347B1 EP00890244A EP00890244A EP1077347B1 EP 1077347 B1 EP1077347 B1 EP 1077347B1 EP 00890244 A EP00890244 A EP 00890244A EP 00890244 A EP00890244 A EP 00890244A EP 1077347 B1 EP1077347 B1 EP 1077347B1
Authority
EP
European Patent Office
Prior art keywords
zone
reflector
light
headlamp
light source
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.)
Expired - Lifetime
Application number
EP00890244A
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German (de)
English (en)
Other versions
EP1077347A3 (fr
EP1077347A2 (fr
Inventor
Michael Aichinger
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
Zizala Lichtsysteme 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 Zizala Lichtsysteme GmbH filed Critical Zizala Lichtsysteme GmbH
Publication of EP1077347A2 publication Critical patent/EP1077347A2/fr
Publication of EP1077347A3 publication Critical patent/EP1077347A3/fr
Application granted granted Critical
Publication of EP1077347B1 publication Critical patent/EP1077347B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas

Definitions

  • the invention relates to a vehicle headlamp with an open space reflector for producing an asymmetric low beam, wherein the reflector is divided in the vertical direction into three photometrically effective areas, an upper area, a middle area and a lower area, and the central area has a central area, which Light source is assigned, the upper and the central region of the reflector are separated by an upper transition, the middle and the lower region separated by extending to both sides of the light source lower transitions, the two lower transitions extending from the central region to the outside , are inclined at different angles to a horizontal downwards.
  • a reflector which has an initially mentioned segmentation in an upper, a middle and a lower region, has become known from DE 38 08 086 A1.
  • the segmentation in three areas is used to the light distribution in the horizontal and vertical area perpendicular to the central axis of the headlamp as completely as possible to the desired light distribution, in this case, a dipped beam to adjust.
  • mathematical rule surfaces such as paraboloid or hyperboloid, so it is in fact an open space reflector.
  • Open space reflectors are increasingly being used in vehicle headlights in recent years. This is due in particular to the fact that with the help of free surface reflectors, in contrast to reflectors with a defined geometric structure, almost any arbitrary light distribution can be generated.
  • a drawback that often occurs when using free-field reflectors is that there are often undesirable side-effects in the light distribution pattern, and it is usually not possible to predict these side-effects, such as when using reflectors based on mathematical rule surfaces , In particular, such unwanted side effects occur in free-field reflectors in connection with a reflector segmentation. In the transition areas between the different reflector areas reflected light is reflected, for example, upwards, which may lead to undesirable glare for oncoming traffic.
  • a high light output and thus a good illumination of the area ahead of a vehicle is achieved when using high-pressure gas discharge lamps.
  • a high-pressure gas discharge lamp which is familiar to the person skilled in the art and is frequently used is the so-called D2R lamp, which has two cover strips below the horizontal plane of the headlight for producing a low beam.
  • D2R lamp which has two cover strips below the horizontal plane of the headlight for producing a low beam.
  • these lamps have the disadvantage that it often comes to headlights, in which these lamps are used to disturbing effects, such as the glare of oncoming traffic.
  • a reflector of the type mentioned above in that according to the invention the light source is assigned two substantially horizontally extending cover strips, the cover strips are arranged on both sides of the light source in their immediate vicinity, in a region below a horizontal plane passing through the light source, by means of the cover strips a sharp cut-off of the light emerging from the light source, emitted over the central region of the reflector light is generated, further the lower transitions are arranged so that they coincide with the shadows generated by the cover strips, substantially upwards emerging light is radiated over the upper portion of the reflector in a lying substantially below the light-dark boundary area, and the lower edges of the cover strips leave a light exit area, and the light emerging from this area on the under In the region of the reflector is radiated in a lying substantially below the light-dark boundary area.
  • horizontal plane will be used more often in connection with the reflector or the light source.
  • these "horizontal planes” essentially run horizontally, but that these planes do not always have to be arranged horizontally, for example as a result of the headlight swiveling, etc. It This is therefore an idealized term whose use on the one hand significantly increases the readability of the text and on the other hand does not detract from the comprehensibility and comprehensibility of the text.
  • the vehicle headlight has a reflector in free-field technology, which cooperates with a light source so that a maximum light output is given.
  • the reflector is divided in the vertical direction into an upper, a middle and a lower region.
  • the reflector is combined with a per se known light source which has two cover strips for producing a low beam distribution pattern, such as a D2R high pressure gas discharge lamp, which provides high luminous efficacy.
  • the reflector is designed so that light which is radiated from this light source substantially upwards or downwards, via the upper or the lower region of the reflector in the outer space of the headlamp, d. h is generally reflected on a roadway, where it serves the apron and the width illumination.
  • the areas of the reflector are separated by transitions, the lower transitions being arranged to lie in shadow areas created by the two cover strips.
  • the central area of the reflector is divided into two, so that the central area of the reflector has a left (right) and a right (left) partial area, the lower transition between the left (right) partial area and the lower area below a lower angle to the horizontal than the lower transition between the right (left) portion and the lower portion of the reflector.
  • the size of the angle results according to the arrangement of the cover strips.
  • the lower angle has a value of 5 ° - 10 ° and the larger angle has a value of 17.5 ° - 25 °.
  • the reflector has stepped upper and lower transitions. Are, along one (any) Vertical section of the reflector, extending from top to bottom, the step-like transitions are formed jumping backwards, wherein the upper transition is formed as a substantially horizontally extending transition surface.
  • the formation of the upper transition as a substantially horizontally extending transition surface proves to be beneficial because there is deflected light down and therefore no glare, for example, for oncoming traffic occurs.
  • the middle region has surface grooves in an inner subsection of the left (right) and the right (left) subregion.
  • the surface grooves of the left (right) portion of groove planes which are substantially normal to a horizontal plane through the optical axis and extend at different angles to the vertical plane through the optical axis.
  • a homogenization of the light in a substantially horizontal area of the cut-off line ie. H. essentially in the area of an oncoming traffic side of a roadway.
  • the surface grooves of the right (left) sub-region have groove planes which are at different angles to the vertical plane and are initially normal to the horizontal plane, with increasing horizontal distance from the center, the groove planes at different angles through the horizontal plane.
  • the upper and the lower region of the reflector have surface grooves substantially over their entire surface, these running in the sense of a homogeneous intensity and color mixing of the light reflected from these regions into the outer space.
  • the vehicle headlight is designed as a headlight with a clear lens. Such is much cheaper than a corrective diffuser, which may also be omitted in view of the particular reflector design.
  • a particularly good illumination of the roadway can be achieved if the light source is formed by the arc of a high-pressure xenon lamp, which runs substantially horizontally and parallel to the cover strips.
  • FIG. 1 shows a front view of an open-space reflector 1 of a vehicle headlight according to the invention.
  • the reflector 1 is subdivided in the vertical direction into three areas relevant for photometry, an upper area 2, a middle area 3, and a lower area 4.
  • the central region 3 is due to a central region 5 in a left (right) portion 3a and a right (left) portion 3b divided.
  • the central region 5 is formed as a substantially circular opening, which is provided for receiving a lamp 10.
  • the lamp 10 is explained in more detail with reference to FIGS. 5 and 6.
  • the reflector 1 shown here is used in a vehicle headlight for a vehicle intended for right-hand traffic. In order to achieve a light distribution adapted for left-hand traffic, the reflector only has to be mirrored. The following considerations apply mutatis mutandis to reflectors for left-hand traffic, only the words left and right are in each case to swap each other.
  • the upper region 2 and the middle region 3a are separated from each other by an upper transition 6, the middle region 3 and the lower region 4 by means of lower transitions 7a, 7b.
  • the upper transition 6 runs substantially horizontally, whereas the lower transitions 7a, 7b are inclined downwards at different angles a1, a2 against a horizontal HE.
  • FIG. 3 shows a vertical section through the reflector 1 along the line III-III from FIG. 1.
  • the stepped course of the upper transition 6 and of a lower transition 7b can be clearly seen.
  • the transitions are designed to jump backwards, "backwards" essentially meaning a direction opposite to a light direction Y.
  • the upper transition 6 is formed as a substantially horizontally extending transition surface 6. The reason for this embodiment is that the light emerging from the light source 12, which reaches the junction 6, is completely deflected downwards so that no glare can occur.
  • FIGS. 5 and 6 show a lamp 10 with associated cover strips 13, 14.
  • the lamp 10 used in the vehicle headlight according to the invention is, for example, a type D2R xenon high-pressure gas discharge lamp which is well known to the person skilled in the art.
  • a holder 11 by means of which the light source 12 in the opening 5 of the reflector 1 can be fastened.
  • the lamp 10 has a light source 12, which is formed as an arc of the xenon high-pressure lamp.
  • the light source 12 is surrounded by a transparent, substantially cylindrical, outer casing 8.
  • two cover strips 13, 14 are mounted, wherein the cover strips 13, 14 substantially parallel to a longitudinal axis X of the lamp 10.
  • the special arrangement of the cover strips 13, 14 can be seen.
  • the two cover strips 13, 14 are arranged on both sides of the longitudinal axis X of the lamp 10, below a plane passing through the longitudinal axis X horizontal plane HE.
  • the second cover strip 14 is arranged so that an upper edge is located approximately at an angle b3 below the plane HE and the cover strip stretches over an arc at an angle b2.
  • this is generally a black coating of the sheath 8, which prevents light from the light source from reaching the outside through the area covered by them.
  • the light generated in the light source 12 can emerge from the lamp 10 in substantially any direction. Only by those area of the sheath 8, which are provided with cover strips 13, 14, no light from the lamp 10 can get into the outer space. Direct radiated, d. H. Forward radiated light is usually undesirable in vehicle headlamps because it generally exerts a strong dazzling effect. In order to prevent this, in a practical embodiment of the headlamp, a shadowing known to those skilled in the art is arranged in front of the lamp 10, which, however, is not the subject of the invention and therefore not shown in the drawings.
  • An essential feature of the reflector 1 is that the lower transitions 7a, 7b are located exactly in the area in which the shadows of the cover strips 13, 14 occur.
  • This arrangement of the lower transitions is chosen for the reason that the light reflected from transition regions often leads to strong glare effects. This is mainly due to the fact that a calculation of a ray path of light reflected in the transition regions, in particular in abrupt transitions, often very complicated and difficult and further these transitional regions often deviate from a calculated shape due to production-related inaccuracies. If now the transitions 7a, 7b in the shadow areas of the cover strips 13, 14, so no light from the transitions 7a, 7b are reflected in the outer space of the vehicle headlight, which glare, for example, the oncoming traffic is avoided.
  • transitions 7a, 7b Another advantage of this arrangement of the transitions 7a, 7b is that thereby almost all of the light emerging from the light source 12 can be supplied to such reflector areas, which lie to an illumination of the front of the vehicle Contribute to maximum utilization of the produced light.
  • the lower transitions 7a, 7b are arranged so that they lie completely in the shadow area generated by the cover strips 13, 14, the shadow area in the vertical direction upwards and downwards slightly above that of the transitions 7a, 7b expanded area. This ensures that the vehicle headlight or the light distribution generated by the vehicle headlight behaves tolerant to production and assembly technical deviations of the position of the lamp, the reflector, etc. of the predetermined target values.
  • the cover strips 13, 14 form two outlet openings for light generated in the light space 12.
  • the light exiting via the upper outlet opening is reflected on the one hand via the central portions 3a, 3b, on the other hand on the upper portion 2 of the reflector 1 in the Au- ⁇ enraum.
  • a sharp cut-off line is imaged as an image of the upper edges of the cover strips 13, 14 over the central portions 3a, 3b on the road or a test screen.
  • the left subarea 3a generates the essentially horizontally extending part of the light distribution along the cut-off line in the region of the oncoming traffic side of the roadway.
  • the right portion 3b of the reflector 1 generates that portion of the light distribution, which is located substantially along the inclined at an angle of about 15 ° to a horizontal region of the cut-off line.
  • the interaction of the cover strips with the special design of the central reflector region 3a, 3b produces an extraordinarily sharp cut-off line, with a high illuminance below the cut-off line and vanishing illumination above the cut-off line.
  • the lower portion of a reflector for low beam is in the headlight of the invention from the light source 12 downwardly exiting, reflected on the lower portion 4 of the reflector 1 in the outer space also in the light under Light-dark border lying Area radiated.
  • the light radiated into the outer space via the lower region 4 forms a light distribution which substantially coincides with the light distribution generated by the upper region 2.
  • FIG. 1 A light distribution generated by the central region 3 of the reflector 1 is shown in FIG.
  • the solid lines correspond to so-called Isolux lines, these are lines with constant illuminance.
  • the illuminance is highest for the innermost Isolux line, the illuminance decreases towards the outside.
  • the course of the cut-off line shows the typical shape with a parallel course to the horizon H in the area of an oncoming traffic side GV a road FB and a bend and the following course at about 15 ° to a horizon H on a separate traffic EV. It is also easy to see that in particular the area of the roadway FB lying directly below the horizon H, to which the highest concentration of a vehicle driver is generally directed, is illuminated most intensely.
  • FIG. 8 shows a typical light distribution as generated by the upper region 2 and the lower region 4 of the reflector 1, respectively.
  • Isolux line is drawn, since the illuminance in the entire region indicated is essentially constant.
  • a striking feature of this light distribution is the substantially wider extent of the light distribution in the horizontal direction compared with the light distribution according to FIG. 7.
  • another area is also illuminated in the direction of the vehicle, below the cut-off line.
  • the light distribution shows a clear reduction below the cut-off line, thus avoiding dazzling of oncoming traffic.
  • FIG. 9 an overlay of the entire light image generated by the upper, middle and lower reflector regions 2, 3, 4 is shown.
  • This entire light distribution has a sharp cut-off line, the course of which complies with legal requirements. Furthermore, the good apron and width illumination can be seen.
  • the areas of maximum illuminance are located directly below the horizon H on the carriageway FB.
  • the vehicle headlight is designed as a headlight with a clear lens. Optics or scattering properties of the lens are not necessary, since the desired light image is generated solely by means of the reflector 1 using a special lamp 10 provided for this purpose. However, an even better homogenization of the light distribution in terms of illuminance and color mixing can be provided that certain areas of the reflector 1 with grooves (2 ', 3a', 3b ', 4'), so-called diffuser or scattering grooves, are provided, as known for example from EP 846 912 A2 of the applicant became. In Fig.
  • the free surface reflector 1 of the headlight according to the invention is again shown in a front view, wherein an advantageous course of the grooves (2 ', 3a', 3b ', 4') in the upper, middle and lower region of the reflector 1 is indicated.
  • the middle portions 3a, 3b on both sides of the central region 5 in an inner portion with grooves (3a ', 3b') provided, which are not shown in the drawing.
  • the areas 3a, 3b are formed without grooves.
  • This outer portion of the central portions 3a, 3b is responsible for generating a high illuminance at the cut-off line on the carriageway FB, a dispersion of the light is not necessary here.
  • the left portion 3a has in its inner portion grooves (3a ') with groove planes, which are substantially normal to a horizontal plane HE through an optical axis X and extend at different angles to a vertical plane VE through the optical axis X.
  • the longitudinal axis X of the lamp 10 is considered here.
  • the groove plane is to be understood as meaning a normal plane to a tangent to a groove bottom assuming a symmetrical groove cross-section, see also EP 846 912 A2. With the help of these Streurillen a homogenization of the light is achieved in the substantially horizontal region of the cut-off line.
  • the right central portion 3b of the reflector 1 also has grooves (3b ') in an inner portion, the horizontal extent of the portion provided with grooves (3b') being greater in the right portion 3b than in the left portion 3a.
  • the grooves (3b ') initially show a similar course to the grooves (3a') of the left-hand region 3a.
  • the groove planes do not only extend at different angles to the vertical plane VE, but the groove planes also increasingly begin to tilt to the right at a decreasing angle to the horizontal plane HE.
  • the initial angle of about 90 ° between the groove planes and the horizontal plane HE through the optical axis X is reduced to about 75 ° for the outermost groove in the right middle portion 3b.
  • This decrease in the angle is associated with the 15 ° increase in the light-dark boundary in the area of the own traffic side EV, with the aid of these grooves (3b ') thus a homogenization of the light in this area of the cut-off line is made possible ,
  • the upper region 2 and the lower region 4 of the reflector 1 also have surface grooves (2 ', 4') on their entire surface. These show a variety of courses, which have been computationally adjusted so that the best possible homogenization of the reflected light from these reflector areas 2, 4 is achieved.

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  • 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)

Claims (11)

  1. Projecteur de véhicule avec un réflecteur à surface libre (1) pour créer un feu de croisement asymétrique, le réflecteur (1) étant divisé dans le sens vertical en trois zones actives du point de vue de la technique d'éclairage, une zone supérieure (2), une zone médiane (3) et une zone inférieure (4) et la zone médiane (3) comportant une zone centrale (5) à laquelle est associée une source lumineuse (12), la zone supérieure (2) et la zone médiane (3) du réflecteur (1) étant séparées l'une de l'autre par une transition supérieure (6), la zone médiane (3) et la zone inférieure (4) étant séparées l'une de l'autre par des transitions inférieures (7a, 7b) s'étendant vers les deux côtés de la source lumineuse (12), les deux transitions inférieures (7a, 7b) s'étendant de la zone centrale (5) vers l'extérieur étant inclinées sous des angles différents (a1, a2) vers le bas, par rapport à une ligne horizontale (HE)
    caractérisé en ce que
    de bandes de recouvrement (13, 14) s'étendant sensiblement à l'horizontale sont associées à la source lumineuse,
    une limite clair/foncé de la lumière émise à partir de la source lumineuse (12) par l'intermédiaire de la zone médiane (3) du réflecteur (1) est créée au moyen des bandes de recouvrement (13, 14),
    en outre, les transitions inférieures (7a, 7b) sont disposées de façon à coïncider avec les ombres créées par les bandes de recouvrement (13, 14),
    de la lumière dégagée sensiblement par l'intermédiaire de la zone supérieure (2), du réflecteur (1) est émise dans une zone située sensiblement en dessous de la limite clair/foncé, et
    les arêtes inférieures des bandes de recouvrement (13, 14) laissent libre une zone de dégagement de lumière et la lumière dégagée par cette zone est émise par l'intermédiaire de la zone inférieure (4) du réflecteur (1) dans une zone située sensiblement en dessous de la limite clair/foncé.
  2. Projecteur de véhicule selon la revendication 1, caractérisé en ce que la zone médiane (3) du réflecteur (1) comporte une zone partielle gauche (droite) et une zone partielle droite (gauche) (3a, 3b), la transition inférieure(7a) entre la zone partielle gauche (droite) (3a) et la zone inférieure (4) s'étendant sous un plus petit angle (a1) par rapport à l'horizontale (HE) que la transition inférieure (7b) entre la zone partielle droite (gauche) (3b) et la zone inférieure (4) du réflecteur (1).
  3. Projecteur de véhicule selon la revendication 1 ou 2, caractérisé en ce que le plus petit angle (a1) à une valeur de 5° à 10° et le plus grand angle (a2) a une valeur de 17,5° à 25°.
  4. Projecteur de véhicule selon l'une quelconque des revendications 1 à 3, caractérisé par des transitions supérieure (6) et inférieures (7a, 7b) en forme de gradins.
  5. Projecteur de véhicule selon la revendication 4, caractérisé en ce que le long d'une coupe verticale (quelconque) du réflecteur (1), en s'étendant du haut vers la bas, les transitions en forme de gradins (6, 7a, 7b) sont conçues de sorte à jaillir vers l'arrière, la transition supérieure (6) étant conçue en tant que surface de transition s'étendant sensiblement à l'horizontale.
  6. Projecteur de véhicule selon l'une quelconque des revendications 1 à 5, caractérisé en ce que dans une section partielle intérieure de la zone partielle gauche (droite) et de la zone partielle droite (gauche) (3a, 3b), la zone médiane (3) comporte des cannelures superficielles (3a', 3b').
  7. Projecteur de véhicule selon la revendication 6, caractérisé en ce que les cannelures superficielles (3a') de la zone partielle gauche (droite) (3a) comportent des plans de cannelure qui sont sensiblement normaux par rapport à un plan horizontal (HE) à travers un axe optique (X) et qui s'étendent sous différents angles par rapport à un plan vertical (VE) à travers l'axe optique (X)
  8. Projecteur de véhicule selon la revendication 6 ou 7, caractérisé en ce que les cannelures superficielles (3b') de la zone partielle droite (gauche) (3b) comportent des plans de cannelure qui s'étendent sous différents angles par rapport au plan vertical (VE) et qui au début sont normaux par rapport au plan horizontal (HE), au fur et à mesure que la distance horizontale augmente par rapport à la zone centrale (5), les plans cannelés s'étendant sous différents angles à travers le plan horizontal (HE).
  9. Projecteur de véhicule selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la zone supérieure (2) et la zone inférieure (4) du réflecteur (1) comportent des cannelures superficielles (2', 4') sensiblement sur l'ensemble de leur surface, ces dernières s'étendant dans le sens d'un mélange homogène d'intensité et de couleur de la lumière réfléchie à partir de ces zones vers l'extérieur.
  10. Projecteur de véhicule selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'il est conçu en tant que projecteur avec une optique de fermeture limpide.
  11. Projecteur de véhicule selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la source lumineuse (12) est formée par l'arc d'une ampoule haute pression au xénon, qui s'étend sensiblement à l'horizontale et à la parallèle des bandes de recouvrement (13, 14).
EP00890244A 1999-08-16 2000-08-07 Projecteur pour véhicule Expired - Lifetime EP1077347B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT140799 1999-08-16
AT0140799A AT413753B (de) 1999-08-16 1999-08-16 Fahrzeugscheinwerfer

Publications (3)

Publication Number Publication Date
EP1077347A2 EP1077347A2 (fr) 2001-02-21
EP1077347A3 EP1077347A3 (fr) 2006-01-18
EP1077347B1 true EP1077347B1 (fr) 2006-12-27

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EP00890244A Expired - Lifetime EP1077347B1 (fr) 1999-08-16 2000-08-07 Projecteur pour véhicule

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EP (1) EP1077347B1 (fr)
AT (2) AT413753B (fr)
DE (1) DE50013898D1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101956955B (zh) * 2010-09-30 2014-02-19 海洋王照明科技股份有限公司 汽车前照灯以及用于汽车前照灯的反射器
CN102486298B (zh) * 2010-12-06 2013-10-16 海洋王照明科技股份有限公司 前雾灯反射器、前雾灯及机动车

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JP2753914B2 (ja) * 1992-02-05 1998-05-20 株式会社小糸製作所 自動車用前照灯
FR2694373B1 (fr) * 1992-07-30 1994-11-04 Valeo Vision Projecteur de véhicule automobile comportant une lampe à deux filaments pour engendrer sélectivement un faisceau antibrouillard et un faisceau de route.
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JP3145925B2 (ja) * 1996-07-18 2001-03-12 株式会社小糸製作所 車輌用前照灯
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Publication number Publication date
DE50013898D1 (de) 2007-02-08
AT413753B (de) 2006-05-15
ATA140799A (de) 2005-09-15
EP1077347A3 (fr) 2006-01-18
ATE349650T1 (de) 2007-01-15
EP1077347A2 (fr) 2001-02-21

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