EP0225313B1 - Vehicle lights - Google Patents

Vehicle lights Download PDF

Info

Publication number
EP0225313B1
EP0225313B1 EP86890322A EP86890322A EP0225313B1 EP 0225313 B1 EP0225313 B1 EP 0225313B1 EP 86890322 A EP86890322 A EP 86890322A EP 86890322 A EP86890322 A EP 86890322A EP 0225313 B1 EP0225313 B1 EP 0225313B1
Authority
EP
European Patent Office
Prior art keywords
light
projection lens
vehicle headlight
reflector
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
EP86890322A
Other languages
German (de)
French (fr)
Other versions
EP0225313A3 (en
EP0225313A2 (en
Inventor
Josef Kanzler
Gerald Bachtrod
Alois Ing. Noisser
Ernst Gugerell
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 EP0225313A2 publication Critical patent/EP0225313A2/en
Publication of EP0225313A3 publication Critical patent/EP0225313A3/en
Application granted granted Critical
Publication of EP0225313B1 publication Critical patent/EP0225313B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
    • 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
    • F21S41/30—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
    • 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

Definitions

  • the invention relates to a vehicle headlamp with a radiation guide system in which a projection lens, which is arranged independently of the light source and at least essentially detects the amount of light emerging from the lamp, is possibly followed only by a cover plate, and in which a reflector is located on the side of the light source facing away from the projection lens is provided, the projection lens being provided with different surface curvatures in sections and being delimited in particular in the direction of the light source by a curved surface, and the projection lens being arranged in the headlight so as to be adjustable without the interposition of a diaphragm between the light source and the projection lens and preferably relative to the light source.
  • the area of the driver of a motor vehicle is very wide and relatively low. Only a certain area of this very space can be illuminated, since oncoming traffic must not be dazzled.
  • the classic headlight system which in addition to the light source consists of two optical systems, namely a parabolic reflector (homofocal reflector) and the cover plate, is only suitable for this purpose with certain restrictions, since the corrugation of the cover plate (i.e. its breakdown into individual lens groups) is the only means of Achieving a desired light distribution offers, if one refrains from the design of the reflector as a rectangular reflector. It should also be borne in mind that the cover plate must often be skewed to the optical axis of the headlamp for structural reasons.
  • PE stands for polyellipsoid
  • DE for three-dimensional ellipsoid
  • these systems are built in analogy to a slide projector, at which the object (the slide) is imaged via a lens, which is essentially a converging lens. Accordingly, the PE and DE systems also have a converging lens which is arranged between the light source and the cover plate.
  • these systems are with one special ellipsoid reflector and an aperture, which is arranged in the area of the second focal point of the ellipsoid and is shown as a light / dark boundary.
  • the curved object diaphragm - also called the Petzval bowl - has to be adjusted precisely and absorbs a large amount of light energy, which is lost for the intended purpose, in the form of thermal energy, which leads to deformation and misalignment of the diaphragm and to overheating of the headlamp .
  • DE-A-24 61 918 relates to a headlamp system with reflector, projection lens and diaphragm arranged between them, the described and illustrated projection lenses being designed in a conventional manner.
  • Fig. 5 shows an embodiment without a drawn-in diaphragm, in which an unsharp light / dark boundary is formed by the fact that an elliptical concave mirror section is provided instead of a reflector symmetrical to the light source, the edge of which parallel to the filament is depicted as a light / dark boundary
  • arrangement is among other things the basic requirement according to claim 1 of DE-A-24 61 918, namely that the area of the exit pupil is not greater than 2 cm2 in any direction, cannot be met due to the fact that direct light enters the scattering lens from the horizontal lamp.
  • an aperture must be provided, which appears in the other figures. 5 is therefore to be regarded as incomplete; their revelation should always be seen in the context of the overall revelation.
  • DE-A-32 41 826 relates to the known PE system with an elliptical reflector with two focal points (F1, F2) and a converging lens, a radiation diaphragm being arranged in the second focal point F2 and the focal point of the converging lens also coinciding with F2. According to this document, it is a matter of determining critical zones on the elliptical reflector and not reflecting them by surface treatment or make it less reflective, or change its shape.
  • FR-A-2501333 relates to an optical system which is completely different from the objective optical system, where only a cover plate may follow the projection lens, so that the projection lens produces the imaging pattern.
  • these pure diverting lenses are followed by diaphragm edges and deflecting mirrors, which redirect the light against the reflector, from where it is only reflected in the direction of the cover plate. Accordingly, a curvature of the projection lenses that is different in sections with respect to the imaging pattern is also not provided; they do not project the light outside the headlight.
  • GB-A-1 570 805 relates to a headlamp with a concave reflector which is designed to be translucent in the horizontal plane, so that light which is not deflected by the reflector forms a light beam there which is inclined with respect to the main light beam.
  • the reflector is divided.
  • incandescent lamps can be provided in which a biconvex lens section is provided on a conventional bulb as a front part for detecting the close range of the optical axis. These end parts only capture part of the emitted light and, moreover, have two differently curved convex areas, which are, however, curved in the same way.
  • the lens-like configurations of the cover plate which are also possible, only essentially cover the near region of the optical axis.
  • DE-A-32 00 796 relates to the formation of a dimming cap for dipped-beam headlamps, in which a conventional reflector (in particular a parabolic reflector), a lamp and this dimming cap is provided between the lamp and the reflector.
  • the anti-dazzle device has a surface concave towards the light source, in which areas of different curvature adjoin one another.
  • the subject of the invention is a vehicle headlight of the type mentioned at the outset, characterized in that the projection lens has flat areas for focusing rays by total reflection and that the reflector in the vicinity of the light source, in particular in the area of the strongest reflector curvature, has at least two independently curved, preferably symmetrically arranged with respect to the light source , Has sections curved away from the light source or is formed from these sections.
  • the desired light distribution is achieved, as is known, by corresponding surface curvatures of the projection lens surfaces which differ in sections.
  • the projection lens is corrected with regard to the desired imaging pattern, ie the shape of the light spot generated and its luminance distribution.
  • the projection lens is advantageously also adapted to the light entry.
  • the accuracy that can be achieved by casting processes is sufficient for this.
  • Surface curvature which differs in sections thus means that curvatures which differ from one another are present on at least one of the surfaces which form the surface of the projection lens.
  • the flat areas for beam bundling by total reflection serve primarily to achieve a sharp light / dark boundary.
  • edge regions of the projection lens are advantageously covered opaque. This can be done favorably by the projection lens holder or by the lamp mask itself, ie by the outer edge of the lamp.
  • a cover plate is not absolutely necessary, so that the projection lens then forms the face of the lamp.
  • a cover plate can, however, be advantageous in certain cases.
  • the projection lens together with and / or with respect to its holder, is preferably adjustable for adjustment with respect to the light source. No optical accuracy is required here - as is essential for a diaphragm.
  • the adjustability of the projection lens is in particular a spatial adjustability; depending on the design, a tilt, swivel or displacement adjustment may be sufficient.
  • the sections arched away from the light source advantageously have spherical surface profiles, preferably of the same radius, and are advantageously arranged abutting one another, wherein preferably a butt edge is formed which is cut by the optical axis of the vehicle headlight.
  • light sources in particular are used in such a way that their filament runs essentially at right angles to the optical axis of the headlamp, preferably at least in a projection parallel to a light exit boundary edge.
  • the filament advantageously runs parallel to the carriageway at right angles to the optical axis of the headlamp.
  • an H 1 incandescent lamp which has an axial filament is used from the side or an H 3 incandescent lamp which has a transverse helix from above or below.
  • the vehicle headlight according to the invention is particularly advantageously designed with flattened reflector regions adjoining a curved reflector region upwards and downwards, in particular as a rectangular headlight.
  • the reflector can also be provided with steps outside the area of the curved sections.
  • the vehicle headlight according to the invention is designed as a double headlight with independent light sources, which are preferably used in each case on opposite sides of the double headlight.
  • This relates above all to headlights arranged one above the other, in which one light bulb is inserted from above and the other from below. It is also possible to use both lamps from behind or from the side.
  • At least one shield can be provided in the region of the light source in order to avoid the transmission of reflections occurring at the light source bulb and / or base to the projection lens.
  • the targeted beam bundling makes it possible to use the vehicle headlamp according to the invention for all matters relating to motor vehicle exterior lighting, in particular thus for low beam, fog or high beam headlamps, but also for position or brake lights or reversing lights.
  • FIG. 1 shows a vertical section
  • FIG. 2 shows a horizontal section through a headlight according to the invention
  • FIG. 3 shows a horizontal section through a variant of the headlight according to FIG. 1 and Figure 2.
  • a rectangular headlight with a holder 1, a reflector 2, a light bulb 3 and a cover plate 4 is shown. It can be seen that the cover plate 4 is skewed to the optical axis 5 of the headlight, i.e. it is inclined with respect to both the vertical and the horizontal reflector symmetry plane.
  • the light bulb 3 is inserted from below, its filament 6 is horizontal and in the horizontal projection parallel to the upper and lower light exit limiting edge of the headlight.
  • the reflector 2 is a parabolic reflector which, in the region of its greatest curvature, has two sections 7, 7 'arranged symmetrically to the optical axis 5 and curved away from the incandescent lamp 3, the abutting edge 8 of which is cut by the optical axis 5.
  • the curved sections 7, 7 ' have a spherical surface profile with the same radii.
  • a projection lens 9 is provided in a lens holder 10 between the incandescent lamp 3 and the cover plate 4.
  • the projection lens 9 is a flat wedge lens which is curved away from the incandescent lamp 3 both on the light entry side and on the light exit side; it therefore fulfills the function of a combined collecting and scattering lens.
  • the light entry side curvature is a cylindrical surface, the light exit side curvature a corrected toroidal surface.
  • Fig. 1 it can be seen that the lower flat area of the projection lens 9 is shorter than the upper flat area.
  • the flat areas of the projection lens 9 serve, among other things, to bundle the rays through total reflection.
  • the lens holder 10 is adjustable relative to the incandescent lamp 3, it being shown that the lens holder is firmly connected to the reflector body 2 at the top and a screw adjustment with a compression spring 11 is provided at the bottom.
  • the projection lens 9 is arranged twice asymmetrically with respect to the optical axis 5.
  • a simple asymmetrical or symmetrical arrangement is also possible.
  • the reflector 2 is provided with an additional step 12 outside the curved sections 7,7 '.
  • the stage 12 can also be arranged on both sides of the incandescent lamp 3 and is used to bundle edge rays in preferred areas.
  • Areas of the projection lens 9 can optionally be mirrored, in particular the upper and lower flat areas. This also applies to parts of the holder 10, in particular in the area where bundled light strikes from the curved sections 7, 7 'of the reflector 2.
  • the cover disks if used, can also have a corresponding corrugation.
  • a shield 13 which surrounds the lamp shaft and the lower part of the lamp bulb approximately semicircularly, but can also encompass it completely, particularly in the bulb area.
  • This shielding can be used to prevent reflections that occur on the lamp bulb (for example, due to the retraction of the H3 lamp shown) and / or on the lamp base appear as second and third focal points of the lamp and are emitted to the reflection lens.
  • the desired light distribution and luminance can thus be achieved without the arrangement of heat-sensitive light / dark diaphragms; furthermore, the manufacture of a reflector designed according to the invention is far simpler than that of a PE or DE reflector.
  • the adjustment of the optical system is also much less complex and susceptible to that with the PE or DE systems.
  • the luminaire system according to the invention provides a bifocal reflector; the overall length of a headlamp according to the invention is thus far less than that of PE or DE headlamps.

Abstract

The invention is directed to a vehicle headlight including a projection lens secured by a covering disk. No diaphragm is interposed between light source and the projection lens. The lens having the shape of a flat sector of a cylinder with a cut-off apex. An inner lens surface having a uniform curvature and an outer lens surface having a toroidal curvature.

Description

Die Erfindung betrifft einen Fahrzeugscheinwerfer, mit einem Strahlenleitsystem, in dem auf eine von der Lichtquelle unabhängig angeordnete, mindestens im wesentlichen die aus der Leuchte austretende Lichtmenge erfassende Projektionslinse gegebenenfalls lediglich eine Abdeckscheibe folgt, und in dem an der der Projektionslinse abgewandten Seite der Lichtquelle ein Reflektor vorgesehen ist, wobei die Projektionslinse abschnittsweise mit unterschiedlichen Flächenkrümmungen versehen und insbesondere in Richtung auf die Lichtquelle von einer gekrümmten Fläche begrenzt ist, und wobei die Projektionslinse ohne Zwischenschaltung einer Blende zwischen Lichtquelle und Projektionslinse und vorzugsweise gegenüber der Lichtquelle verstellbar im Scheinwerfer angeordnet ist.The invention relates to a vehicle headlamp with a radiation guide system in which a projection lens, which is arranged independently of the light source and at least essentially detects the amount of light emerging from the lamp, is possibly followed only by a cover plate, and in which a reflector is located on the side of the light source facing away from the projection lens is provided, the projection lens being provided with different surface curvatures in sections and being delimited in particular in the direction of the light source by a curved surface, and the projection lens being arranged in the headlight so as to be adjustable without the interposition of a diaphragm between the light source and the projection lens and preferably relative to the light source.

Der Sehraum des Lenkers eines Kraftfahrzeuges ist sehr breit und verhältnismäßig niedrig. Auch von diesem Sehraum ist nur ein gewisser Bereich ausleuchtbar, da der Gegenverkehr nicht geblendet werden darf. Das klassische Scheinwerfersystem, das außer der Lichtquelle aus zwei optischen Systemen, nämlich einem Parabolreflektor (Homofokalreflektor) und der Abdeckscheibe besteht, eignet sich zu diesem Zweck nur mit gewissen Einschränkungen, da die Riffelung der Abdeckscheibe (d.h. ihre Aufgliederung in Einzellinsengruppen) das einzige Mittel zur Erzielung einer gewünschten Lichtverteilung bietet, wenn man von der Ausbildung des Reflektors als Rechteckreflektor absieht. Hier ist auch zu bedenken, daß die Abdeckscheibe oft aus baulichen Gründen windschief zur optischen Achse des Scheinwerfers stehen muß.The area of the driver of a motor vehicle is very wide and relatively low. Only a certain area of this very space can be illuminated, since oncoming traffic must not be dazzled. The classic headlight system, which in addition to the light source consists of two optical systems, namely a parabolic reflector (homofocal reflector) and the cover plate, is only suitable for this purpose with certain restrictions, since the corrugation of the cover plate (i.e. its breakdown into individual lens groups) is the only means of Achieving a desired light distribution offers, if one refrains from the design of the reflector as a rectangular reflector. It should also be borne in mind that the cover plate must often be skewed to the optical axis of the headlamp for structural reasons.

Eine weitere Entwicklung, die der Erzielung einer entsprechenden Ausleuchtung hinderlich gegenübersteht, ist die aus stilistischen und aerodynamischen Gründen angestrebte Verkleinerung der Lichtaustrittsfläche.Another development, which hinders the achievement of a corresponding illumination, is the reduction of the light exit surface, which is aimed at for stylistic and aerodynamic reasons.

Um eine trotzdem entsprechende Leuchtdichte zu erzielen, wurden die sogenannten PE- bzw. DE-Systeme vorgeschlagen, wobei PE für Polyellipsoid und DE für dreidimensionales Ellipsoid steht.In order to achieve a corresponding luminance, the so-called PE or DE systems have been proposed, where PE stands for polyellipsoid and DE for three-dimensional ellipsoid.

Diese Systeme sind in Analogie zu einem Diaprojektor aufgebaut, bei dem das Objekt (das Dia) über ein Objektiv, das im wesentlichen eine Sammellinse ist, abgebildet wird. Demgemäß weisen die PE- bzw. DE-Systeme ebenfalls eine Sammellinse auf, die zwischen der Lichtquelle und der Abdeckscheibe angeordnet ist. Um zum Unterschied vom Diaprojektor eine spezifische Lichtverteilung zu gewährleisten, wobei u.a. die Hell/Dunkelgrenze beim Fahrzeugscheinwerfer ein sehr wesentlicher Faktor ist, sind diese Systeme mit einem besonderen Ellipsoidreflektor und einer Blende ausgestattet, die im Bereich des zweiten Brennpunktes des Ellipsoids angeordnet ist und als Hell/Dunkelgrenze abgebildet wird.These systems are built in analogy to a slide projector, at which the object (the slide) is imaged via a lens, which is essentially a converging lens. Accordingly, the PE and DE systems also have a converging lens which is arranged between the light source and the cover plate. In order to ensure a specific light distribution, in contrast to the slide projector, whereby the light / dark limit is a very important factor in vehicle headlights, these systems are with one special ellipsoid reflector and an aperture, which is arranged in the area of the second focal point of the ellipsoid and is shown as a light / dark boundary.

Die PE- bzw. DE-Systeme haben bis jetzt allerdings in der Praxis trotz ihrer optischen Vorzüge keine Verläßlichkeit ergeben, wobei insbesondere das Überhitzungs- und Justierungsproblem eine bedeutende Rolle spielen. Die gekrümmte Objektblende - auch Petzval-Schale genannt - muß nämlich genauestens justiert werden und nimmt eine große Menge an Lichtenergie, die dabei für den angestrebten Zweck verlorengeht, in Form von Wärmeenergie auf, was zur Verformung und Dejustierung der Blende und zur Überhitzung des Scheinwerfers führt. Außerdem ergeben sich Probleme auf Grund des Umstandes, daß die Blendenkante auf Grund ihrer Anordnung im Bereich des zweiten Brennpunktes des Ellipsoidreflektors starke Farbsäume an der Hell/Dunkelgrenze erzeugt.Up to now, the PE and DE systems have, in practice, not shown any reliability despite their optical advantages, with the overheating and adjustment problem in particular playing an important role. The curved object diaphragm - also called the Petzval bowl - has to be adjusted precisely and absorbs a large amount of light energy, which is lost for the intended purpose, in the form of thermal energy, which leads to deformation and misalignment of the diaphragm and to overheating of the headlamp . In addition, problems arise due to the fact that the diaphragm edge, due to its arrangement in the region of the second focal point of the ellipsoid reflector, produces strong fringes of color at the light / dark boundary.

Die DE-A-24 61 918 betrifft ein Scheinwerfersystem mit Reflektor, Projektionslinse und dazwischen angeordneter Blende, wobei die beschriebenen und dargestellten Projektionslinsen in üblicher Weise ausgebildet sind. Lediglich Fig. 5 zeigt eine Ausführung ohne eingezeichneter Blende, bei der eine unscharfe Hell/Dunkelgrenze dadurch gebildet ist, daß kein zur Lichtquelle symmetrischer Reflektor, sondern ein elliptischer Hohlspiegelabschnitt vorgesehen ist, dessen zum Glühfaden parallele Kante als Hell/Dunkelgrenze abgebildet wird.Bei dieser Anordnung ist aber u.a. die Grundforderung laut Anspruch 1 der DE-A-24 61 918, nämlich daß die Fläche der Austrittspupille in keiner Richtung größer als 2 cm² ist, nicht erfüllbar auf Grund des Umstandes, daß Direktlicht von der Horizontallampe in die Streulinse eintritt. Zur Erfüllung dieser Forderung muß eine Blende vorgesehen sein, die in den anderen Figuren jeweils aufscheint. Fig. 5 ist also als unvollständig anzusehen; ihre Offenbarung ist stets im Rahmen der Gesamtoffenbarung zu sehen.DE-A-24 61 918 relates to a headlamp system with reflector, projection lens and diaphragm arranged between them, the described and illustrated projection lenses being designed in a conventional manner. Only Fig. 5 shows an embodiment without a drawn-in diaphragm, in which an unsharp light / dark boundary is formed by the fact that an elliptical concave mirror section is provided instead of a reflector symmetrical to the light source, the edge of which parallel to the filament is depicted as a light / dark boundary But arrangement is among other things the basic requirement according to claim 1 of DE-A-24 61 918, namely that the area of the exit pupil is not greater than 2 cm² in any direction, cannot be met due to the fact that direct light enters the scattering lens from the horizontal lamp. To meet this requirement, an aperture must be provided, which appears in the other figures. 5 is therefore to be regarded as incomplete; their revelation should always be seen in the context of the overall revelation.

Die DE-A-32 41 826 betrifft das bekannte PE-System mit einem elliptischen Reflektor mit zwei Brennpunkten (F₁,F₂) und einer Sammellinse, wobei eine Strahlenblende im zweiten Brennpunkt F₂ angeordnet ist sowie der Brennpunkt der Sammellinse ebenfalls mit F₂ zusammenfällt. Gemäß dieser Druckschrift geht es darum, kritische Zonen am elliptischen Reflektor zu ermitteln und diese durch Oberflächenbehandlung nicht reflektierend oder weniger reflektierend zu machen, bzw. ihre Form zu ändern.DE-A-32 41 826 relates to the known PE system with an elliptical reflector with two focal points (F₁, F₂) and a converging lens, a radiation diaphragm being arranged in the second focal point F₂ and the focal point of the converging lens also coinciding with F₂. According to this document, it is a matter of determining critical zones on the elliptical reflector and not reflecting them by surface treatment or make it less reflective, or change its shape.

Die FR-A-2501333 betrifft ein optisches System, das vom gegenständlichen optischen System, wo auf die Projektionslinse lediglich gegebenenfalls eine Abdeckscheibe folgt, somit die Projektionslinse das Abbildungsmuster erzeugt, gänzlich verschieden ist. Soweit dort überhaupt Projektionslinsen verwendet werden, folgen auf diese reinen Zerstreuerlinsen Blendenkanten sowie Umlenkspiegel, die das Licht gegen den Reflektor umleiten, von wo es erst in Richtung Abdeckscheibe reflektiert wird. Dementsprechend ist auch eine im Hinblick auf das Abbildungsmuster abschnittsweise unterschiedliche Krümmung der Projektionslinsen nicht vorgesehen; sie projizieren das Licht nicht nach außerhalb des Scheinwerfers.FR-A-2501333 relates to an optical system which is completely different from the objective optical system, where only a cover plate may follow the projection lens, so that the projection lens produces the imaging pattern. Insofar as projection lenses are used at all, these pure diverting lenses are followed by diaphragm edges and deflecting mirrors, which redirect the light against the reflector, from where it is only reflected in the direction of the cover plate. Accordingly, a curvature of the projection lenses that is different in sections with respect to the imaging pattern is also not provided; they do not project the light outside the headlight.

Die GB-A-1 570 805 betrifft einen Scheinwerfer mit einem konkaven Reflektor, der in der Horizontalebene lichtdurchlässig ausgebildet ist, so daß dort vom Reflektor nicht abgelenktes Licht einen Lichtstrahl bildet, der gegenüber dem Hauptlichtstrahl geneigt ist. Insbesondere ist der Reflektor geteilt. Dabei können nach verschiedenen Ausführungsformen Glühlampen vorgesehen sein, bei denen an einem üblichen Kolben ein Bikonvexlinsenabschnitt als Stirnteil zur Erfassung des Nahbereichs der optischen Achse vorgesehen ist. Diese Stirnteile erfassen lediglich einen Teil des ausgestrahlten Lichts und weisen überdies zwar zwei unterschiedlich gekrümmte Konvexbereiche auf, die aber in sich gleich gekrümmt sind. Auch die ebenfalls möglichen linsenartigen Ausbildungen der Abdeckscheibe erfassen lediglich im wesentlichen den Nahbereich der optischen Achse.GB-A-1 570 805 relates to a headlamp with a concave reflector which is designed to be translucent in the horizontal plane, so that light which is not deflected by the reflector forms a light beam there which is inclined with respect to the main light beam. In particular, the reflector is divided. According to various embodiments, incandescent lamps can be provided in which a biconvex lens section is provided on a conventional bulb as a front part for detecting the close range of the optical axis. These end parts only capture part of the emitted light and, moreover, have two differently curved convex areas, which are, however, curved in the same way. The lens-like configurations of the cover plate, which are also possible, only essentially cover the near region of the optical axis.

Die DE-A-32 00 796 betrifft die Ausbildung einer Abblendkappe für Abblendscheinwerfer, bei denen ein üblicher Reflektor (insbesondere Parabolreflektor), eine Lampe und zwischen Lampe und Reflektor diese Abblendkappe vorgesehen ist. Die Abblendkappe weist eine zur Lichtquelle hin konkave Fläche auf, in der Bereiche unterschiedlicher Krümmung aneinander anschließen.DE-A-32 00 796 relates to the formation of a dimming cap for dipped-beam headlamps, in which a conventional reflector (in particular a parabolic reflector), a lamp and this dimming cap is provided between the lamp and the reflector. The anti-dazzle device has a surface concave towards the light source, in which areas of different curvature adjoin one another.

Demgegenüber ist Erfindungsgegenstand ein Fahrzeugscheinwerfer des eingangs genannten Typs, dadurch gekennzeichnet, daß die Projektionslinse Flachbereiche zur Strahlenbündelung durch Totalreflexion aufweist und daß der Reflektor im Nahbereich der Lichtquelle, insbesondere im Bereich der stärksten Reflektorkrümmung, mindestens zwei unabhängig voneinander gekrümmte, vorzugsweise bezüglich der Lichtquelle symmetrisch angeordnete, von der Lichtquelle weggewölbte Abschnitte aufweist bzw. aus diesen Abschnitten gebildet ist.In contrast, the subject of the invention is a vehicle headlight of the type mentioned at the outset, characterized in that the projection lens has flat areas for focusing rays by total reflection and that the reflector in the vicinity of the light source, in particular in the area of the strongest reflector curvature, has at least two independently curved, preferably symmetrically arranged with respect to the light source , Has sections curved away from the light source or is formed from these sections.

Die gewünschte Lichtverteilung wird dabei wie bekannt durch entsprechende abschnittsweise unterschiedliche Oberflächenkrümmung der Projektionslinsenflächen erzielt. Mit anderen Worten ist die Projektionslinse im Hinblick auf das gewünschte Abbildungsmuster, d.h. die Form des erzeugten Lichtflecks und dessen Leuchtdichteverteilung, korrigiert. Dabei wird vorteilhaft die Projektionslinse auch auf den Lichteintritt abgestimmt. Die durch Gußverfahren erzielbare Genauigkeit ist dafür ausreichend. Abschnittsweise unterschiedliche Oberflächenkrümung bedeutet somit, daß an mindestens einer der Flächen, die die Oberfläche der Projektionslinse bilden, Krümmungen vorliegen, die sich voneinander unterscheiden.The desired light distribution is achieved, as is known, by corresponding surface curvatures of the projection lens surfaces which differ in sections. In other words, the projection lens is corrected with regard to the desired imaging pattern, ie the shape of the light spot generated and its luminance distribution. The projection lens is advantageously also adapted to the light entry. The accuracy that can be achieved by casting processes is sufficient for this. Surface curvature which differs in sections thus means that curvatures which differ from one another are present on at least one of the surfaces which form the surface of the projection lens.

Die Flachbereiche zur Strahlenbündelung durch Totalreflexion dienen vor allem zur Erzielung einer scharfen Hell/Dunkelgrenze.The flat areas for beam bundling by total reflection serve primarily to achieve a sharp light / dark boundary.

Zur Begrenzung des Lichtaustritts werden dabei vorteilhaft Randbereiche der Projektionslinse lichtundurchlässig abgedeckt. Dies kann günstig durch die Projektionslinsenhalterung oder durch die Leuchtenmaske selbst erfolgen, d.h. durch den äußeren Leuchtenrand.In order to limit the light emission, edge regions of the projection lens are advantageously covered opaque. This can be done favorably by the projection lens holder or by the lamp mask itself, ie by the outer edge of the lamp.

Eine Abdeckscheibe ist dabei nicht unbedingt erforderlich, so daß die Projektionslinse dann die Leuchtenstirnfläche bildet. Eine Abdeckscheibe kann aber in gewissen Fällen vorteilhaft sein.A cover plate is not absolutely necessary, so that the projection lens then forms the face of the lamp. A cover plate can, however, be advantageous in certain cases.

Vorzugsweise ist die Projektionslinse, zusammen mit und/oder gegenüber ihrer Halterung, mit Bezug auf die Lichtquelle zur Justierung verstellbar. Hier ist keine optische Genauigkeit - wie sie bei einer Blende unumgänglich ist - erforderlich.The projection lens, together with and / or with respect to its holder, is preferably adjustable for adjustment with respect to the light source. No optical accuracy is required here - as is essential for a diaphragm.

Die Verstellbarkeit der Projektionslinse ist insbesondere eine räumliche Verstellbarkeit; je nach Bauart kann aber eine Kipp-, Schwenk- oder Verschiebungsverstellung ausreichen.The adjustability of the projection lens is in particular a spatial adjustability; depending on the design, a tilt, swivel or displacement adjustment may be sufficient.

Auf Grund des Umstandes, daß beim erfindungsgemäßen Fahrzeugscheinwerfer - bis auf Abdeckungen im Randbereich - die volle Lichtmenge zur Beleuchtung zur Verfügung steht, wäre ein Reflektor nicht unbedingt erforderlich.Due to the fact that the vehicle headlight according to the invention - except for covers in the edge area - the full amount of light is available for lighting, a reflector would not be absolutely necessary.

Die von der Lichtquelle weggewölbten Abschnitte weisen vorteilhaft Kugeloberflächenprofile, vorzugsweise mit gleichem Radius, auf und sind günstig aneinanderstoßend angeordnet, wobei vorzugsweise ein Stoßkante gebildet ist, die von der optischen Achse des Fahrzeugscheinwerfers geschnitten wird.The sections arched away from the light source advantageously have spherical surface profiles, preferably of the same radius, and are advantageously arranged abutting one another, wherein preferably a butt edge is formed which is cut by the optical axis of the vehicle headlight.

Beim erfindungsgemäßen Fahrzeugscheinwerfer werden insbesondere Lichtquellen so eingesetzt, daß deren Glühfaden im wesentlichen im rechten Winkel zur optischen Achse des Scheinwerfers, vorzugsweise zumindest in einer Projektion parallel zu einer Lichtaustrittsbegrenzungskante, verläuft. So verläuft vorteilhaft der Glühfaden parallel zur Fahrbahn im rechten Winkel zur optischen Achse des Scheinwerfers. Als Beispiel dazu wird eine H₁-Glühlampe, die eine Axialwendel aufweist, von der Seite her oder eine H₃-Glühlampe, die eine Transversalwendel aufweist von oben oder unten her eingesetzt.In the vehicle headlamp according to the invention, light sources in particular are used in such a way that their filament runs essentially at right angles to the optical axis of the headlamp, preferably at least in a projection parallel to a light exit boundary edge. The filament advantageously runs parallel to the carriageway at right angles to the optical axis of the headlamp. As an example of this, an H 1 incandescent lamp which has an axial filament is used from the side or an H 3 incandescent lamp which has a transverse helix from above or below.

Besonders vorteilhaft wird der erfindungsgemäße Fahrzeugscheinwerfer mit an einen gekrümmten Reflektorbereich nach oben und unten anschließenden abgeflachten Reflektorbereichen, insbesondere als Rechteckscheinwerfer, ausgebildet.The vehicle headlight according to the invention is particularly advantageously designed with flattened reflector regions adjoining a curved reflector region upwards and downwards, in particular as a rectangular headlight.

Der Reflektor kann auch außerhalb des Bereiches der gewölbten Abschnitte mit Stufen versehen sein.The reflector can also be provided with steps outside the area of the curved sections.

Insbesondere ist der erfindungsgemäße Fahrzeugscheinwerfer als Doppelscheinwerfer mit unabhängigen Lichtquellen, die vorzugsweise jeweils an einander gegenüberliegenden Seiten des Doppelscheinwerfers eingesetzt sind, ausgebildet. Dies bezieht sich vor allem auf übereinander angeordnete Scheinwerfer, bei denen eine Glühlampe von oben und die andere von unten eingesetzt ist. Der Einsatz beider Lampen von hinten oder seitlich ist gleichfalls möglich.In particular, the vehicle headlight according to the invention is designed as a double headlight with independent light sources, which are preferably used in each case on opposite sides of the double headlight. This relates above all to headlights arranged one above the other, in which one light bulb is inserted from above and the other from below. It is also possible to use both lamps from behind or from the side.

Weiterhin kann im Bereich der Lichtquelle mindestens eine Abschirmung zur Vermeidung der Weiterleitung von am Lichtquellenkolben und/oder -sockel auftretenden Reflexionen an die Projektionslinse vorgesehen sein.Furthermore, at least one shield can be provided in the region of the light source in order to avoid the transmission of reflections occurring at the light source bulb and / or base to the projection lens.

Die gezielte Strahlenbündelung gestattet es, den erfindungsgemäßen Fahrzeugscheinwerfer für alle Belange der Kraftfahrzeugaußenbeleuchtung, insbesondere also für Abblend-, Nebel- oder Fernscheinwerfer, aber auch für Positions- oder Bremsleuchten oder Rückfahrscheinwerfer, einzusetzen.The targeted beam bundling makes it possible to use the vehicle headlamp according to the invention for all matters relating to motor vehicle exterior lighting, in particular thus for low beam, fog or high beam headlamps, but also for position or brake lights or reversing lights.

Die Erfindung wird im folgenden an Hand von Beispielen unter Bezugnahme auf die Zeichnung näher beschrieben, in der Fig. 1 einen Vertikalschnitt und Fig. 2 einen Horizontalschnitt durch einen erfindungsgemäßen Scheinwerfer sowie Fig. 3 einen Horizontalschnitt durch eine Variante des Scheinwerfers nach den Fig. 1 und 2 darstellt.The invention is described in more detail below on the basis of examples with reference to the drawing, in which FIG. 1 shows a vertical section and FIG. 2 shows a horizontal section through a headlight according to the invention, and FIG. 3 shows a horizontal section through a variant of the headlight according to FIG. 1 and Figure 2.

In den Figuren ist ein Rechteckscheinwerfer mit einer Halterung 1, einem Reflektor 2, einer Glühlampe 3 und einer Abdeckscheibe 4 dargestellt. Man erkennt, daß die Abdeckscheibe 4 windschief zur optischen Achse 5 des Scheinwerfers angeordnet ist, d.h. sie ist sowohl gegenüber der vertikalen als auch der horizontalen Reflektorsymmetrieebene geneigt.In the figures, a rectangular headlight with a holder 1, a reflector 2, a light bulb 3 and a cover plate 4 is shown. It can be seen that the cover plate 4 is skewed to the optical axis 5 of the headlight, i.e. it is inclined with respect to both the vertical and the horizontal reflector symmetry plane.

Die Glühlampe 3 ist von unten her eingesetzt, ihre Wendel 6 steht horizontal und in der Horizontal-Projektion parallel zur oberen und unteren Lichtaustrittsbegrenzungskante des Scheinwerfers.The light bulb 3 is inserted from below, its filament 6 is horizontal and in the horizontal projection parallel to the upper and lower light exit limiting edge of the headlight.

Der Reflektor 2 ist ein Parabolreflektor, der im Bereich seiner stärksten Krümmung zwei zur optischen Achse 5 symmetrisch angeordnete, von der Glühlampe 3 weggewölbte Abschnitte 7,7' aufweist, deren Stoßkante 8 von der optischen Achse 5 geschnitten wird. Die gewölbten Abschnitte 7,7' weisen ein Kugeloberflächenprofil mit gleichen Radien auf.The reflector 2 is a parabolic reflector which, in the region of its greatest curvature, has two sections 7, 7 'arranged symmetrically to the optical axis 5 and curved away from the incandescent lamp 3, the abutting edge 8 of which is cut by the optical axis 5. The curved sections 7, 7 'have a spherical surface profile with the same radii.

Zwischen der Glühlampe 3 und der Abdeckscheibe 4 ist eine Projektionslinse 9 in einer Linsenhalterung 10 vorgesehen. Die Projektionslinse 9 ist eine flache Keillinse, die sowohl an der Lichteintrittsseite als auch an der Lichtaustrittsseite von der Glühlampe 3 weggewölbt ist; sie erfüllt somit die Funktion einer kombinierten Sammel- und Streulinse. Dabei ist die Lichteintrittsseitenwölbung eine Zylinderfläche, die Lichtaustrittsseitenwölbung eine korrigierte Toroidfläche. In Fig. 1 erkennt man, daß der untere Flachbereich der Projektionslinse 9 kürzer ist als deren oberer Flachbereich. Die Flachbereiche der Projektionslinse 9 dienen u.a. der Strahlenbündelung durch Totalreflexion.A projection lens 9 is provided in a lens holder 10 between the incandescent lamp 3 and the cover plate 4. The projection lens 9 is a flat wedge lens which is curved away from the incandescent lamp 3 both on the light entry side and on the light exit side; it therefore fulfills the function of a combined collecting and scattering lens. The light entry side curvature is a cylindrical surface, the light exit side curvature a corrected toroidal surface. In Fig. 1 it can be seen that the lower flat area of the projection lens 9 is shorter than the upper flat area. The flat areas of the projection lens 9 serve, among other things, to bundle the rays through total reflection.

Die Linsenhalterung 10 ist gegenüber der Glühlampe 3 verstellbar vorgesehen, wobei dargestellt ist, daß die Linsenhalterung oben fest mit dem Reflektorkörper 2 verbunden und unten eine Schraubverstellung mit Druckfeder 11 vorgesehen ist.The lens holder 10 is adjustable relative to the incandescent lamp 3, it being shown that the lens holder is firmly connected to the reflector body 2 at the top and a screw adjustment with a compression spring 11 is provided at the bottom.

Weiterhin erkennt man, daß die Projektionslinse 9 gegenüber der optischen Achse 5 zweifach asymmetrisch angeordnet ist. Eine einfach asymmetrische oder eine symmetrische Anordnung ist gleichfalls möglich.It can also be seen that the projection lens 9 is arranged twice asymmetrically with respect to the optical axis 5. A simple asymmetrical or symmetrical arrangement is also possible.

In Fig. 3 erkennt man, daß der Reflektor 2 außerhalb der gewölbten Abschnitte 7,7' mit einer zusätzlichen Stufe 12 versehen ist. Die Stufe 12 kann auch beidseitig der Glühlampe 3 angeordnet sein und dient zur Bündelung von Randstrahlen in bevorzugten Bereichen.In Fig. 3 it can be seen that the reflector 2 is provided with an additional step 12 outside the curved sections 7,7 '. The stage 12 can also be arranged on both sides of the incandescent lamp 3 and is used to bundle edge rays in preferred areas.

In den Figuren sind verschiedene Strahlengänge eingezeichnet. Gegebenenfalls können Bereiche der Projektionslinse 9 verspiegelt sein, insbesondere die oberen und unteren Flachbereiche. Dies gilt ebenso für Teile der Halterung 10, insbesondere im Bereich, wo von den gewölbten Abschnitten 7,7' des Reflektors 2 gebündeltes Licht auftrifft.Various beam paths are shown in the figures. Areas of the projection lens 9 can optionally be mirrored, in particular the upper and lower flat areas. This also applies to parts of the holder 10, in particular in the area where bundled light strikes from the curved sections 7, 7 'of the reflector 2.

Wie aus Fig. 1 erkennbar, können die Abdeckscheiben, wenn sie verwendet werden, auch eine entsprechende Riffelung aufweisen.As can be seen from FIG. 1, the cover disks, if used, can also have a corresponding corrugation.

Bei der in den Fig. 1 und 2 dargestellten Ausführungsform ist eine Abschirmung 13 dargestellt, die den Lampenschaft und den unteren Teil des Lampenkolbens etwa halbkreisförmig umfaßt, ihn aber auch - insbesondere im Kolbenbereich - ganz umgreifen kann. Diese Abschirmung kann dazu eingesetzt werden, zu verhindern, daß Reflexionen, die am Lampenkolben (z.B. durch den Kolbeneinzug der dargestellten H3-Lampe) und/oder am Lampensockel auftreten, als zweite und dritte Brennpunkte der Lampe erscheinen und an die Reflexionslinse abgestrahlt werden.In the embodiment shown in FIGS. 1 and 2, a shield 13 is shown, which surrounds the lamp shaft and the lower part of the lamp bulb approximately semicircularly, but can also encompass it completely, particularly in the bulb area. This shielding can be used to prevent reflections that occur on the lamp bulb (for example, due to the retraction of the H3 lamp shown) and / or on the lamp base appear as second and third focal points of the lamp and are emitted to the reflection lens.

Gemäß der Erfindung kann somit die jeweils gewünschte Lichtverteilung und Leuchtdichte ohne die Anordnung erwärmungsempfindlicher Hell/Dunkelblenden erzielt werden; weiterhin ist die Herstellung eines erfindungsgemäß ausgebildeten Reflektors weitaus einfacher als die eines PE- bzw. DE-Reflektors. Die Justierung des optischen Systems ist gleichfalls weitaus weniger aufwendig und anfällig gegenüber der bei den PE- bzw. DE-Systemen.According to the invention, the desired light distribution and luminance can thus be achieved without the arrangement of heat-sensitive light / dark diaphragms; furthermore, the manufacture of a reflector designed according to the invention is far simpler than that of a PE or DE reflector. The adjustment of the optical system is also much less complex and susceptible to that with the PE or DE systems.

Endlich besteht beim erfindungsgemäßen Leuchtensystem - wenn überhaupt - auch nicht die Notwendigkeit, einen bifokalen Reflektor vorzusehen; die Baulänge eines erfindungsgemäßen Scheinwerfers ist also weitaus geringer als die von PE- bzw. DE-Scheinwerfern.Finally, there is no need, if at all, for the luminaire system according to the invention to provide a bifocal reflector; the overall length of a headlamp according to the invention is thus far less than that of PE or DE headlamps.

Claims (11)

  1. A vehicle headlight having a ray guiding system, wherein a projection lens (9) positioned independently from the source of light (3) and at least substantially receiving the amount of light emitted by the lamp is optionally followed only by a covering disk (4), and wherein, on the side of the source of light averted from the projection lens, a reflector (2) is provided, the projection lens having portions with different surface curvatures and, particularly in the direction towards the source of light (3) being terminated by a curved surface, with the projection lens (9) being arranged within the headlight without there being interposed a blind between the source of light (3) and the projection lens (9) and preferably adjustable with regard to the source of light (3), characterized in that the projection lens (9) has plane regions for ray-bundling by total reflection and that the reflector (2), in the vicinity of the source of light (3), particularly in the region of the most pronounced reflector curvature, comprises at least two portions (7, 7') curved independently from each other and preferably arranged symmetrically relative to the source of light (3), and curved away therefrom, and/or consists of these portions.
  2. A vehicle headlight according to claim 1, wherein margin regions of the projection lens are masked in order to be impervious to light.
  3. A vehicle headlight according to claim 2, wherein margin regions of the projection lens are masked by its support (10).
  4. A vehicle headlight according to claim 2 oder 3, wherein margin regions of the projection lens are masked by a lamp mask.
  5. A vehicle headlight according to claim 1, wherein the portions (7, 7') have spherical surface profiles, preferably of same radius.
  6. A vehicle headlight according to claim 1 or 5, wherein the portions (7, 7') are positioned meeting to each other and preferably defining a contact edge being intersected by the optical axis of the vehicle headlight.
  7. A vehicle headlight according to any one of claims 1 to 6, wherein a source of light (3) with its incandescent filament extending substantially at right angles to the optical axis of the headlight, preferably in at least one projection parallely to a light emission limiting edge, is provided.
  8. Vehicle headlight according to any one of claims 1 to 7, wherein the vehicle headlight is provided with flattened upper and lower reflector regions adjacent to a curved reflector region, particularly being a rectangular headlight.
  9. A vehicle headlight according to any one of claims 1 and 5 through 8, wherein the reflector ist provided with steps (12) outside the region of the of curved portions (7, 7').
  10. A vehicle headlight according to any one of claims 1 to 9, wherein the vehicle headlight is provided as a twin headlight having independent sources of light that are inserted from opposite sides of the twin headlight.
  11. A vehicle headlight according to any one of claims 1 to 10, wherein at least one light shield (13) is provided in the region of the light source in order to avoid the transmission of reflections occurring at the bulb and/or the base of the light source to the projection lens (9).
EP86890322A 1985-12-04 1986-11-19 Vehicle lights Expired - Lifetime EP0225313B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3524/85 1985-12-04
AT0352485A AT396675B (en) 1985-12-04 1985-12-04 VEHICLE LIGHT

Publications (3)

Publication Number Publication Date
EP0225313A2 EP0225313A2 (en) 1987-06-10
EP0225313A3 EP0225313A3 (en) 1989-05-03
EP0225313B1 true EP0225313B1 (en) 1995-02-08

Family

ID=3551702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86890322A Expired - Lifetime EP0225313B1 (en) 1985-12-04 1986-11-19 Vehicle lights

Country Status (6)

Country Link
US (1) US4811174A (en)
EP (1) EP0225313B1 (en)
JP (1) JP2548150B2 (en)
AT (2) AT396675B (en)
DE (1) DE3650229D1 (en)
ES (1) ES2068177T3 (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2621679B1 (en) * 1987-10-13 1990-02-09 Cibie Projecteurs LOW HEIGHT HIGH SPEED RECOVERY ROAD PROJECTOR FOR A MOTOR VEHICLE
US4959757A (en) * 1988-05-09 1990-09-25 Ichikoh Industries, Ltd. Automotive lamp assembly
JPH025301A (en) * 1988-06-24 1990-01-10 Ichikoh Ind Ltd Headlight for automobile
GB8824206D0 (en) * 1988-10-15 1988-11-23 Carello Lighting Plc Motor vehicle headlamp
JP2508827B2 (en) * 1988-11-30 1996-06-19 市光工業株式会社 Automotive headlights
JPH0515681Y2 (en) * 1989-02-08 1993-04-26
US5081564A (en) * 1989-07-11 1992-01-14 Koito Manufacturing Co., Ltd. Vehicular lighting device
DE3933540C2 (en) * 1989-10-07 1999-04-01 Bosch Gmbh Robert Headlights with a variable position of a light source arranged therein for motor vehicles
JPH076564Y2 (en) * 1990-04-19 1995-02-15 株式会社小糸製作所 Variable light distribution vehicle headlights
JP2787744B2 (en) * 1992-09-04 1998-08-20 株式会社小糸製作所 Reflector for vehicle lighting
AT400887B (en) * 1993-05-03 1996-04-25 Zizala Lichtsysteme Gmbh VEHICLE LIGHT PROJECTION LENS
JPH08203303A (en) * 1995-01-31 1996-08-09 Nippondenso Co Ltd Lighting fixture device
US5795057A (en) * 1995-04-17 1998-08-18 Dedo Weigert Film Gmbh Asymmetrical lamp
US5915831A (en) * 1996-11-05 1999-06-29 Autosystems Manufacturing, Inc. Internal aim headlamp assembly
AT500415B8 (en) * 2001-03-13 2007-02-15 Zizala Lichtsysteme Gmbh VEHICLE HEADLIGHTS
AUPS198202A0 (en) * 2002-04-26 2002-06-06 Ferguson Lighting Pty Limited Lighting apparatus
JP4379673B2 (en) * 2002-10-07 2009-12-09 株式会社小糸製作所 Vehicle headlamp
US7021796B2 (en) * 2003-01-13 2006-04-04 The Boeing Company Light engine apparatus and method
US20050030759A1 (en) * 2003-08-04 2005-02-10 Guide Corporation Bifocal hyperbolic catadioptric collection system for an automotive lamp
JP4536479B2 (en) * 2003-12-02 2010-09-01 株式会社小糸製作所 Vehicle headlamp
FR2864933B1 (en) * 2004-01-09 2007-04-20 Koito Mfg Co Ltd HEADLIGHT FOR A FIXED BULB VEHICLE IN DECAL POSITION
JP4343003B2 (en) * 2004-03-31 2009-10-14 株式会社小糸製作所 Vehicle headlamp
JP2006049190A (en) * 2004-08-06 2006-02-16 Koito Mfg Co Ltd Vehicle headlight
US20060209556A1 (en) * 2005-03-15 2006-09-21 Koito Manufacturing Co., Ltd. Vehicle lamp
FR2884899B1 (en) * 2005-04-21 2007-06-15 Valeo Vision Sa LIGHTING MODULE PROVIDING A LUMINOUS BEAM WITH CUT FOR A MOTOR VEHICLE PROJECTOR, AND PROJECTOR COMPRISING SUCH A MODULE
JP2007030592A (en) * 2005-07-25 2007-02-08 Yamaha Motor Co Ltd Lighting device for vehicle and motorcycle equipped with the same
FR2894647B1 (en) * 2005-12-09 2010-03-12 Holophane Sa MOTOR VEHICLE PROJECTOR
JP4697969B2 (en) * 2006-03-29 2011-06-08 スタンレー電気株式会社 Lighting device
US7648257B2 (en) * 2006-04-21 2010-01-19 Cree, Inc. Light emitting diode packages
US7264387B1 (en) 2006-05-08 2007-09-04 Visteon Global Technologies, Inc. Reduced depth projector headlamp assembly
US7810972B2 (en) * 2006-10-13 2010-10-12 Visteon Global Technologies, Inc. Headlamp assembly having an adjustable light beam direction
US20080247188A1 (en) * 2007-04-04 2008-10-09 Magna International Inc. Complex projector lens for LED headlamp
JP4697215B2 (en) * 2007-11-20 2011-06-08 市光工業株式会社 Vehicle lighting
JP5167474B2 (en) * 2008-07-01 2013-03-21 スタンレー電気株式会社 Projector type lamp
FR2936587B1 (en) * 2008-09-30 2014-04-25 Valeo Vision Sas "OPTICAL MODULE HAVING AN OPTICAL DEVIATION ELEMENT"
JP2014089941A (en) 2012-10-03 2014-05-15 Koito Mfg Co Ltd Vehicular lighting unit
US10018316B2 (en) * 2015-06-09 2018-07-10 Lumileds Holding B.V. Headlight module

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE297125C (en) *
US1422307A (en) * 1920-01-19 1922-07-11 Salto Salvatore Projecting device for beams of light
US1519737A (en) * 1921-10-06 1924-12-16 Lyndon Edward Light projector
US1610124A (en) * 1924-06-30 1926-12-07 Hall C M Lamp Co No-glare headlight
US1889696A (en) * 1930-07-30 1932-11-29 Pierron Jacques Projector
FR44054E (en) * 1933-06-19 1934-10-11 Projector
FR778208A (en) * 1933-09-09 1935-03-12 Anti-glare deflector for concentrated light beam lamps, such as headlight lamps
FR770599A (en) * 1934-03-23 1934-09-17 Marchal Device for recovering or concentrating the direct flux in headlamps, in particular automobile headlamps
US2192886A (en) * 1935-07-27 1940-03-12 Philips Nv Optical system
DE1422506A1 (en) * 1962-09-13 1968-12-05 Rolf Mickley Reflector cover lens for two-filament light bulbs with dimmed high-beam and near-light in motor vehicle headlights
US3325637A (en) * 1964-03-14 1967-06-13 Honda Gijutsu Kenkyusho Kk Dust-proof headlight assembly
US3354303A (en) * 1965-10-08 1967-11-21 Case Co J I Mechanical and electrical plug-in type headlamp mounting
DE1274533B (en) * 1966-01-27 1968-08-08 Westfaelische Metall Ind K G H Headlights for motor vehicles with a parabolic reflector
US3598989A (en) * 1969-01-02 1971-08-10 Sylvania Electric Prod Automotive headlight
DE2461918A1 (en) * 1974-01-11 1975-07-17 Faulhaber Fritz Motor car spot lamp - with narrow angle beam of high intensity and gas discharge light source
US4213171A (en) * 1976-06-24 1980-07-15 Sassmannshausen Knut Lighting fixture with side escape window
US4345303A (en) * 1979-10-02 1982-08-17 Cibie Projecteurs Optical systems permitting controlled shifting of the beam pattern in headlamps, especially for vehicles
FR2498297B1 (en) * 1981-01-16 1985-11-29 Cibie Projecteurs IMPROVEMENTS ON CROSSING PROJECTORS
FR2501333A1 (en) * 1981-03-09 1982-09-10 Cibie Projecteurs Automotive signal lamp preventing phantom signals - uses shielded lamp with shaped screen immediately ahead to divert all light onto main reflector and to trap incident light
US4569007A (en) * 1981-10-29 1986-02-04 Ford Motor Company Headlamp
FR2516203B1 (en) * 1981-11-12 1986-03-14 Cibie Projecteurs MOTOR VEHICLE PROJECTOR
US4471411A (en) * 1982-09-27 1984-09-11 General Motors Corporation Vehicle body taillamp assembly
IT8352827V0 (en) * 1983-01-11 1983-01-11 Fiat Auto Spa COLORED LIGHT SIGNALING LIGHT FOR MOTOR VEHICLES
JPS59156302U (en) * 1983-04-07 1984-10-20 市光工業株式会社 automotive lighting
EP0125353B1 (en) * 1983-05-10 1989-10-11 Corning Glass Works Automotive headlight having optics in the reflector
FR2566721B1 (en) * 1984-07-02 1987-01-02 Cibie Projecteurs METHOD OF MANUFACTURING AND ADJUSTING, IN ORIENTATION, OF A MOTOR VEHICLE PROJECTOR; MOTOR VEHICLE SPOTLIGHT FOR IMPLEMENTING THIS PROCESS
DE3529546C1 (en) * 1985-08-17 1987-02-05 Hella Kg Hueck & Co Dimmed vehicle headlights with an ellipsoidal reflector

Also Published As

Publication number Publication date
DE3650229D1 (en) 1995-03-23
JP2548150B2 (en) 1996-10-30
EP0225313A3 (en) 1989-05-03
ATE118264T1 (en) 1995-02-15
US4811174A (en) 1989-03-07
EP0225313A2 (en) 1987-06-10
JPS6366801A (en) 1988-03-25
AT396675B (en) 1993-11-25
ES2068177T3 (en) 1995-04-16
ATA352485A (en) 1987-07-15

Similar Documents

Publication Publication Date Title
EP0225313B1 (en) Vehicle lights
DE69932198T2 (en) Vehicle lamp with aspherical lenses and associated irises
DE69829895T2 (en) headlights
DE102004043706B4 (en) Optical system for a motor vehicle headlight, lighting unit for a motor vehicle headlight and motor vehicle headlight
DE19508472C2 (en) Vehicle headlights with a number of lights
DE10101258B4 (en) vehicle headlights
DE19924178C2 (en) Luminaire with a reflector with a multi-sector reflection surface and a lens system
DE3620789C2 (en) Dimmed automotive headlights
DE4315393C2 (en) Motor vehicle headlights with a reflector and a lens
EP0937942A2 (en) Projection type motor vehicle headlamp
EP0307657A2 (en) Motor vehicle headlight
DD283670A5 (en) REFLECTOR FOR DEFLECTED OR DIMMABLE MOTOR VEHICLE HEADLIGHTS
EP0294589A2 (en) Dipped light headlamp
EP0517878B1 (en) Headlamp for motor vehicles
DE19543008B4 (en) Motor vehicle headlights with a divided reflector
DE19519655B4 (en) Lighting device arranged on a front part of a vehicle
DE4307109C2 (en) Low beam headlights for right and left-hand traffic for motor vehicles
DE427143C (en) Headlight lamp, especially for automobiles, with reflector, projection lens and obturator
DE102015201856A1 (en) Motor vehicle headlight
DE4228890B4 (en) Headlights for vehicles
DE19832466A1 (en) Projection type headlamp assembly for a motor vehicle
DE69832327T2 (en) Motor vehicle headlight with a two-filament lamp
DE10012634A1 (en) Head-lamp for motor vehicle, has active rear-wall zone of reflector directly behind the light-source
AT500562B1 (en) VEHICLE HEADLIGHTS
EP0558949A2 (en) Dipping headlamp for vehicles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19890905

17Q First examination report despatched

Effective date: 19910705

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ZIZALA LICHTSYSTEME GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19950208

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19950208

Ref country code: BE

Effective date: 19950208

REF Corresponds to:

Ref document number: 118264

Country of ref document: AT

Date of ref document: 19950215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3650229

Country of ref document: DE

Date of ref document: 19950323

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2068177

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950327

ITF It: translation for a ep patent filed

Owner name: UFFICIO TECNICO ING. A. MANNUCCI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950508

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19951119

Ref country code: AT

Effective date: 19951119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19951120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19951130

Ref country code: LI

Effective date: 19951130

Ref country code: CH

Effective date: 19951130

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19951119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19961213

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051119