EP0094518B1 - Vehicle headlamp - Google Patents

Vehicle headlamp Download PDF

Info

Publication number
EP0094518B1
EP0094518B1 EP83103843A EP83103843A EP0094518B1 EP 0094518 B1 EP0094518 B1 EP 0094518B1 EP 83103843 A EP83103843 A EP 83103843A EP 83103843 A EP83103843 A EP 83103843A EP 0094518 B1 EP0094518 B1 EP 0094518B1
Authority
EP
European Patent Office
Prior art keywords
reflector
ellipse
axial longitudinal
longitudinal section
vehicle headlamp
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
Application number
EP83103843A
Other languages
German (de)
French (fr)
Other versions
EP0094518A2 (en
EP0094518A3 (en
Inventor
Hans-Otto Dr. Ernst
Wilhelm Röhling
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Priority to AT83103843T priority Critical patent/ATE28693T1/en
Publication of EP0094518A2 publication Critical patent/EP0094518A2/en
Publication of EP0094518A3 publication Critical patent/EP0094518A3/en
Application granted granted Critical
Publication of EP0094518B1 publication Critical patent/EP0094518B1/en
Expired 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
    • F21S41/30—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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature

Definitions

  • the invention relates to a vehicle headlight with a cup-shaped reflector, the inner reflection surface of which forms an ellipse section in the axial longitudinal sections, the eccentricity of which increases from the vertical axial longitudinal section to the horizontal axial longitudinal section.
  • Such reflectors are used in headlights that work on the projector principle.
  • Such a headlight is described in DE-A-24 46 521.
  • a reflector is used, the reflecting surface of which, in the vertical axial section, represents an ellipse section, the inner focal point of which is designated by F and the outer focal point of which is the diaphragm called the screen.
  • the outer focal point of this ellipse section also forms the focal plane of the lens body arranged in front of the reflector.
  • the reflection surface has a different shape, which can also be elliptical, among other things. In the description it is said only that this other shape or elliptical shape is designed so that the light reflected by the reflector is scattered more horizontally than vertically. It can be seen from FIG.
  • the light is strongly concentrated in the vertical direction and more scattered in the horizontal direction, but the scatter in the horizontal direction is uncontrolled and very strong, since the filament is arranged between the two focal points of the ellipse resulting in the horizontal axial section.
  • a bowl-shaped reflector is known, the axial longitudinal sections of which form an ellipse section.
  • the eccentricity decreases from the vertical axial longitudinal section to the horizontal axial longitudinal section.
  • the light emerging from this reflector is strongly scattered in the vertical direction and highly concentrated in the horizontal direction.
  • a reflector with such a light distribution is disadvantageous.
  • the front outer edge of the reflector according to the invention no longer runs in one plane and is no longer suitable as an attachment location for the fastening means of the reflector, it is further proposed to form a recessed edge on the front outer edge which carries the fastening means. This gives the possibility that the fastening means, if necessary, lie in one plane.
  • these fastening means can be designed as a radially projecting fastening flange.
  • the semi-ellipse 1 shows the curve of the reflector 3 in the horizontal central longitudinal section
  • the semi-ellipse 2 shows the curve of the reflector 3 in the vertical central longitudinal section. It becomes clear that both ellipses 1 and 2 have the same apex 4 and the same focal point 5 and differ only in the eccentricity e.
  • the eccentricity e is defined by the following formula:
  • a is the longer semiaxis and b is the shorter semiaxis of the respective ellipse.
  • Each axial longitudinal section through the reflector 3 results in a semi-ellipse for the reflection surface 6.
  • the eccentricity e of these semi-ellipses increases from the vertical axial longitudinal section to the horizontal axial longitudinal section, such that the reflector again has an ellipse when viewed from the front.
  • the depth of the reflector increases from the vertical axial longitudinal section to the horizontal axial longitudinal section.
  • the outer edge 7 of the reflector takes such a curve shape that each axial longitudinal section has a semi-ellipse with the full semi-axes a and b.
  • This results in a reflector 3 which gives the greatest possible proportion of reflected light without the reflector 3 having an undercut when viewed in the main light exit direction.
  • the latter is important because such reflectors can only be economically produced in a mass production using the injection or die-casting process and the manufacturing tools for molds without undercuts are particularly favorable in their structure and stability.
  • the outer edge 7 of the reflector merges into a recessed outer edge 8 which has a radially outwardly projecting fastening edge 9.
  • This configuration has the advantage that the fastening means, as in this case the fastening flange, can also be flat in the case of the curved outer edge of the reflector without it having to be integrally formed on the outer wall of the reflector having the reflection surface 6. The latter would result in material accumulation and thus sink marks. These sink marks would adversely affect the quality of the reflective surface.
  • the operating diagram of the headlight is shown in FIG.
  • a diaphragm 11 is arranged, the essentially horizontal edge of which creates the light-dark boundary.
  • the flat surface of the lens 13 is arranged, which lies with its focal plane in the ellipse focal point 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Abstract

A vehicle headlight for providing a shaped beam spreading as a flat bundle. A dish-shaped reflector is employed where the inner reflection surface in the axial longitudinal sections in each case forms an ellipse segment, where the ellipse eccentricity increases from the longitudinal section spanned by the vertical and the reflector axis to the longitudinal section spanned by the horizontal and the reflector axis, where the focal points of the ellipse segments of all sections disposed in planes containing the reflector axis coincide, and where the vertices of the ellipse segments of all sections disposed in planes containing the reflector axis coincide. The depth of the reflector within the longitudinal sections of the reflector containing the reflector axis corresponds to the longer half-axis of the respective ellipse.

Description

Die Erfindung bezieht sich auf einen Fahrzeugscheinwerfer mit einem schalenförmigen Reflektor, dessen innenliegende Reflexionsfläche in den axialen Längsschnitten jeweils einen Ellipsenabschnitt bildet, deren Exzentrizität von dem vertikalen axialen Längsschnitt zu dem horizontalen axialen Längsschnitt zunimmt.The invention relates to a vehicle headlight with a cup-shaped reflector, the inner reflection surface of which forms an ellipse section in the axial longitudinal sections, the eccentricity of which increases from the vertical axial longitudinal section to the horizontal axial longitudinal section.

Derartige Reflektoren werden bei Scheinwerfern verwendet, die nach dem Projektorprinzip arbeiten. Ein solcher Scheinwerfer ist in der DE-A-24 46 521 beschrieben.Such reflectors are used in headlights that work on the projector principle. Such a headlight is described in DE-A-24 46 521.

Hierbei wird ein Reflektor verwendet, dessen Reflexionsfläche im vertikalen axialen Schnitt einen Ellipsenabschnitt darstellt, dessen innerer Brennpunkt mit F bezeichnet ist und in dessen äußeren Brennpunkt die als Schirm bezeichnete Blende angeordnet ist. Der äußere Brennpunkt dieses Ellipsenabschnitts bildet auch zugleich die Brennebene der vor dem Reflektor angeordneten Linsenkörper. Im horizontalen axialen Schnitt zeigt die Reflexionsfläche eine andere Form, die unter anderem auch elliptisch ausgebildet sein kann. In der Beschreibung ist hierüber nur gesagt, daß diese andere Form oder auch elliptische Form so gestaltet ist, daß das vom Reflektor reflektierte Licht in der Horizontalen stärker gestreut wird als in der Vertikalen. Aus der Figur 3 geht hervor, daß die sich im horizontalen Längsschnitt durch den Reflektor ergebende Ellipse so verläuft, daß ihre längere Achse a' senkrecht auf der Achse a im horizontalen axialen Schnitt durch den Reflektor steht. Dadurch ergibt sich für den horizontalen axialen Schnitt ein Ellipsenabschnitt mit zwei Brennpunkten, die auf der vorderen geraden Begrenzungslinie dieses Ellipsenabschnitts liegen. Die Schnitte durch den Reflektor zwischen dem horizontalen axialen und vertikalen axialen Schnitt sollen so gestaltet sein, daß der Reflektor von vorn gesehen wieder eine Ellipse gibt gemäß Figur 2 und daß alle Schnitte, die parallel zu dem Schnitt, wie er aus Figur 2 hervorgeht, wiederum Ellipsen ergeben.Here, a reflector is used, the reflecting surface of which, in the vertical axial section, represents an ellipse section, the inner focal point of which is designated by F and the outer focal point of which is the diaphragm called the screen. The outer focal point of this ellipse section also forms the focal plane of the lens body arranged in front of the reflector. In the horizontal axial section, the reflection surface has a different shape, which can also be elliptical, among other things. In the description it is said only that this other shape or elliptical shape is designed so that the light reflected by the reflector is scattered more horizontally than vertically. It can be seen from FIG. 3 that the ellipse resulting in the horizontal longitudinal section through the reflector runs in such a way that its longer axis a 'is perpendicular to the axis a in the horizontal axial section through the reflector. This results in an ellipse section with two focal points for the horizontal axial section, which lie on the front straight boundary line of this ellipse section. The cuts through the reflector between the horizontal axial and vertical axial cuts should be designed so that the reflector seen from the front again gives an ellipse according to Figure 2 and that all cuts that are parallel to the cut, as shown in Figure 2, again Result in ellipses.

Bei einem solchen Scheinwerfer ist zwar das Licht in vertikaler Richtung stark gebündelt und in horizontaler Richtung stärker gestreut, jedoch ist die Streuung in horizontaler Richtung unkontrolliert und sehr stark, da die Glühwendel zwischen den beiden Brennpunkten der sich im horizontalen axialen Schnitt ergebenden Ellipse angeordnet ist.With such a headlight, the light is strongly concentrated in the vertical direction and more scattered in the horizontal direction, but the scatter in the horizontal direction is uncontrolled and very strong, since the filament is arranged between the two focal points of the ellipse resulting in the horizontal axial section.

Weiterhin ist aus der GB-A-320693 ein schalenförmiger Reflektor bekannt, dessen axiale Längsschnitte einen Ellipsenabschnitt bilden. Bei dem hier offenbarten Reflektor nimmt die Exzentrizität von dem vertikalen axialen Längsschnitt zu dem horizontalen axialen Längsschnitt ab. Das aus diesem Reflektor austretende Licht ist in vertikaler Richtung stark gestreut und in horizontaler Richtung stark gebündelt. Da die die Hell-Dunkel-Grenze erzeugende Blendenkante jedoch im wesentlichen horizontal verläuft, ist ein Reflektor mit einer solchen Lichtverteilung nachteilig.From GB-A-320693 a bowl-shaped reflector is known, the axial longitudinal sections of which form an ellipse section. In the reflector disclosed here, the eccentricity decreases from the vertical axial longitudinal section to the horizontal axial longitudinal section. The light emerging from this reflector is strongly scattered in the vertical direction and highly concentrated in the horizontal direction. However, since the diaphragm edge producing the light-dark boundary runs essentially horizontally, a reflector with such a light distribution is disadvantageous.

Bei den bekannten Reflektoren ist ferner von Nachteil, daß die vordere äußere Kante in einer Ebene verläuft. Das bedeutet, daß nicht die größtmögliche Reflexionsfläche ausgenutzt wird, ohne daß sich in der Hauptlichtaustrittsrichtung, die auch gleichzeitig die Entformungsrichtung des im Spritz- oder Preßverfahren hergestellten Reflektors aus dem Werkzeug ist, eine Hinterschneidung ergibt. Aufgabe der Erfindung ist es, einen Scheinwerfer zu schaffen, dessen Reflektor die Lichtquelle in einem möglichst großen Raumwinkel umfaßt, ohne daß der Reflektor von vorn gesehen Hinterschneidungen aufweist und der Reflektor, wie in der DE-A-24 46 521 beschrieben, das Licht in vertikaler Richtung stark bündelt und in horizontaler Richtung streut, wobei jedoch auch das aus den seitlichen Bereichen des Reflektors reflektierte Licht so konzentriert wird, daß es noch von einer relativ klein gehaltenen, im Abstand vor dem Reflektor angeordneten Sammellinse erfaßt wird. Dabei soll jedoch sichergestellt werden, daß nicht das gesamte vom Reflektor reflektierte Licht punktförmig auf die Blendenkante auftrifft. Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Brennpunkte der Ellipsenabschnitte aller axialen Schnitte sowie deren dazugehörige Scheitelpunkte der Ellipsenabschnitte jeweils deckungsgleich sind und daß die Reflektortiefe in den axialen Längsschnitten des Reflektors der vollen Länge der längeren Halbachse der jeweiligen Ellipsen entspricht. Dadurch wird erreicht, daß eine relativ große Breitenstreuung des Lichtes erzielt wird, eine in den Außenmaßen kleine Abbildungslinse verwendet werden kann und daß sich eine Brennlinie ergibt, die sich zwischen dem äußeren Brennpunkt des sich durch den vertikalen axialen Schnitt ergebenden Ellipsenabschnitts und dem äußeren Brennpunkt des sich durch den horizontalen axialen Schnitt ergebenden Ellipsenabschnitts auf der Mittelachse erstreckt. Letzteres sorgt dafür, daß die Sammellinse nicht übermäßig stark aufgeheizt wird.Another disadvantage of the known reflectors is that the front outer edge runs in one plane. This means that the largest possible reflection area is not used without an undercut in the main light exit direction, which is also the demolding direction of the reflector produced by injection molding or pressing from the tool. The object of the invention is to provide a headlight, the reflector of which comprises the light source in the largest possible solid angle without the reflector having undercuts when viewed from the front and the reflector, as described in DE-A-24 46 521, the light in strongly bundles in the vertical direction and scatters in the horizontal direction, but the light reflected from the lateral areas of the reflector is also concentrated so that it is still captured by a relatively small converging lens arranged at a distance from the reflector. However, it should be ensured that not all of the light reflected by the reflector hits the edge of the diaphragm in a point-like manner. This object is achieved according to the invention in that the focal points of the ellipse sections of all axial sections and their associated vertices of the ellipse sections are each congruent and in that the reflector depth in the axial longitudinal sections of the reflector corresponds to the full length of the longer semiaxis of the respective ellipses. The result of this is that a relatively large distribution of the width of the light is achieved, a small imaging lens can be used in the outer dimensions and that a focal line results which results between the outer focal point of the ellipse section resulting from the vertical axial section and the outer focal point of the extends through the horizontal axial section of the ellipse section on the central axis. The latter ensures that the converging lens is not heated up excessively.

Da die vordere äußere Kante des erfindungsgemäßen Reflektors nicht mehr in einer Ebene verläuft und sich nicht mehr als Anbringungsort für die Befestigungsmittel des Reflektors eignet, wird weiterhin vorgeschlagen, an die vordere Außenkante einen rückspringenden Rand anzuformen, der die Befestigungsmittel trägt. Damit ist die Möglichkeit gegeben, daß die Befestigungsmittel, falls erforderlich, in einer Ebene liegen. Diese Befestigungsmittel können nach einem weiteren Merkmal der Erfindung als radial abspringender Befestigungsflansch ausgeführt sein.Since the front outer edge of the reflector according to the invention no longer runs in one plane and is no longer suitable as an attachment location for the fastening means of the reflector, it is further proposed to form a recessed edge on the front outer edge which carries the fastening means. This gives the possibility that the fastening means, if necessary, lie in one plane. According to a further feature of the invention, these fastening means can be designed as a radially projecting fastening flange.

Die Zeichnung veranschaulicht ein vorteilhaftes Ausführungsbeispiel der Erfindung, und zwar zeigt

  • Figur 1 eine perspektivische Ansicht und
  • Figur 2 einen horizontalen axialen Längsschnitt durch den Reflektor, während
  • Figur 3 einen horizontalen axialen Längsschnitt durch das Scheinwerfersystem darstellt, in den strichpunktiert der vertikale Längsschnitt hineingezeichnet ist.
The drawing illustrates an advantageous embodiment of the invention, namely shows
  • Figure 1 is a perspective view
  • Figure 2 is a horizontal axial longitudinal cut through the reflector while
  • Figure 3 shows a horizontal axial longitudinal section through the headlight system, in which the vertical longitudinal section is drawn in dash-dotted lines.

In Figur 3 stellt die Halbellipse 1 den Kurvenverlauf des Reflektors 3 im horizontalen mittleren Längsschnitt dar, während die Halbellipse 2 den Kurvenverlauf des Reflektors 3 im vertikalen mittleren Längsschnitt zeigt. Dabei wird deutlich, daß beide Ellipsen 1 und 2 denselben Scheitelpunkt 4 und denselben Brennpunkt 5 aufweisen und sich lediglich in der Exzentrizität e unterscheiden. Die Exzentrizität e ist durch folgende Formel definiert :

Figure imgb0001
In Figure 3, the semi-ellipse 1 shows the curve of the reflector 3 in the horizontal central longitudinal section, while the semi-ellipse 2 shows the curve of the reflector 3 in the vertical central longitudinal section. It becomes clear that both ellipses 1 and 2 have the same apex 4 and the same focal point 5 and differ only in the eccentricity e. The eccentricity e is defined by the following formula:
Figure imgb0001

Dabei ist a die längere Halbachse und b die kürzere Halbachse der jeweiligen Ellipse.Here, a is the longer semiaxis and b is the shorter semiaxis of the respective ellipse.

Jeder axiale Längsschnitt durch den Reflektor 3 ergibt für die Reflexionsfläche 6 eine Halbellipse. Die Exzentrizität e dieser Halbellipsen wird von dem vertikalen axialen Längsschnitt zu dem horizontalen axialen Längsschnitt größer, derart, daß der Reflektor von vorn gesehen wiederum eine Ellipse aufweist. Die Reflektortiefe wird von dem vertikalen axialen Längsschnitt zum horizontalen axialen Längsschnitt größer. Die äußere Kante 7 des Reflektors nimmt dabei eine solche Kurvenform ein, daß jeder axiale Längsschnitt eine Halbellipse mit den vollen Halbachsen a und b aufweist. Dadurch ergibt sich ein Reflektor 3, der einen größtmöglichen Anteil von reflektiertem Licht ergibt, ohne daß der Reflektor 3 in der Hauptlichtaustrittsrichtung gesehen eine Hinterschneidung aufweist. Letzteres ist wichtig, da sich derartige Reflektoren in einer Massenfertigung wirtschaftlich vertretbar nur im Spritz- oder Druckgießverfahren herstellen lassen und die Herstellwerkzeuge bei Formen ohne Hinterschneidungen besonders günstig in ihrem Aufbau und ihrer Standfestigkeit sind.Each axial longitudinal section through the reflector 3 results in a semi-ellipse for the reflection surface 6. The eccentricity e of these semi-ellipses increases from the vertical axial longitudinal section to the horizontal axial longitudinal section, such that the reflector again has an ellipse when viewed from the front. The depth of the reflector increases from the vertical axial longitudinal section to the horizontal axial longitudinal section. The outer edge 7 of the reflector takes such a curve shape that each axial longitudinal section has a semi-ellipse with the full semi-axes a and b. This results in a reflector 3 which gives the greatest possible proportion of reflected light without the reflector 3 having an undercut when viewed in the main light exit direction. The latter is important because such reflectors can only be economically produced in a mass production using the injection or die-casting process and the manufacturing tools for molds without undercuts are particularly favorable in their structure and stability.

Die äußere Kante 7 des Reflektors geht in einen rückspringenden äußeren Rand 8 über, der einen radial nach außen vorspringenden Befestigungsrand 9 aufweist. Diese Ausgestaltung bringt den Vorteil, daß die Befestigungsmittel, wie in diesem Fall der Befestigungsflansch, auch bei der kurvenförmig verlaufenden äußeren Kante des Reflektors eben ausgebildet sein kann, ohne daß er an die Außenwandung des die Reflexionsfläche 6 aufweisenden Reflektors angeformt sein muß. Letzteres würde Materialanhäufungen und somit Einfallstellen ergeben. Diese Einfallstellen würden sich nachteilig auf die Qualität der Reflexionsfläche auswirken.The outer edge 7 of the reflector merges into a recessed outer edge 8 which has a radially outwardly projecting fastening edge 9. This configuration has the advantage that the fastening means, as in this case the fastening flange, can also be flat in the case of the curved outer edge of the reflector without it having to be integrally formed on the outer wall of the reflector having the reflection surface 6. The latter would result in material accumulation and thus sink marks. These sink marks would adversely affect the quality of the reflective surface.

In Figur 3 ist das Wirkschema des Scheinwerfers dargestellt. In dem äußeren Brennpunkt 10 der sich im vertikalen axialen Schnitt ergebenden Ellipse 2 ist eine Blende 11 angeordnet, deren im wesentlichen horizontal verlaufende Kante die Hell-Dunkel-Grenze erzeugt. In dem äußeren Brennpunkt 12 der sich im horizontalen axialen Schnitt ergebenden Ellipse 1 ist die Planfläche der Linse 13 angeordnet, die mit ihrer Brennebene in dem Ellipsenbrennpunkt 10 liegt. Dadurch werden die aus dem vertikalen Mittelschnitt des Reflektors 3 austretenden Strahlen 14 in etwa parallelverlaufend gebündelt, während die aus dem horizontalen axialen Schnitt des Reflektors 3 austretenden Strahlen 15 zwar gebündelt werden, jedoch trotzdem noch divergierend austreten. Dadurch ergibt sich ein flaches, jedoch breit gefächertes Lichtband des Scheinwerfers.The operating diagram of the headlight is shown in FIG. In the outer focal point 10 of the ellipse 2 resulting in the vertical axial section, a diaphragm 11 is arranged, the essentially horizontal edge of which creates the light-dark boundary. In the outer focal point 12 of the ellipse 1 resulting in the horizontal axial section, the flat surface of the lens 13 is arranged, which lies with its focal plane in the ellipse focal point 10. As a result, the rays 14 emerging from the vertical central section of the reflector 3 are bundled in an approximately parallel manner, while the rays 15 emerging from the horizontal axial section of the reflector 3 are bundled, but still emerge diverging. This results in a flat, but wide range of light from the headlamp.

Claims (5)

1. Vehicle head lamp with a dished reflector (3), the internal reflection surface (6) of said reflector forming in each of respective axial longitudinal sections an ellipse segment, the eccentricity of which increases from the vertical axial longitudinal section to the horizontal axial longitudinal section, characterised in that both the focal points (5) of the ellipse segments (1, 2) of all the axial longitudinal sections and also the vertices (4) of the ellipse segments (1, 2) of all the axial longitudinal sections are congruent with one another, and that the reflector depth in the axial longitudinal sections of the reflector (3) corresponds to the full length of the longer semi-axis (a) of the respective ellipse.
2. Vehicle headlamp according to claim 1, characterised in that the reflector is produced by an injection or pressing method.
3. Vehicle headlamp according to claim 2, characterised in that the reflector (3) has a radially outwardly extending fixing flange (9) formed on to the outer contour.
4. Vehicle headlamp according to one of the preceding claims, characterised in that a rearwardly projecting rim (8) which supports the fixing means (9) is formed on to the front outer edge (7) of the reflector (3), said edge varying in height.
5. Vehicle headlamp according to claims 3 and 4, characterised in that the fixing flange (9) is formed on to the rearwardly projecting rim (8).
EP83103843A 1982-05-18 1983-04-20 Vehicle headlamp Expired EP0094518B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83103843T ATE28693T1 (en) 1982-05-18 1983-04-20 CAR HEADLIGHTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3218702A DE3218702C2 (en) 1982-05-18 1982-05-18 Vehicle headlights
DE3218702 1982-05-18

Publications (3)

Publication Number Publication Date
EP0094518A2 EP0094518A2 (en) 1983-11-23
EP0094518A3 EP0094518A3 (en) 1984-11-28
EP0094518B1 true EP0094518B1 (en) 1987-07-29

Family

ID=6163937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83103843A Expired EP0094518B1 (en) 1982-05-18 1983-04-20 Vehicle headlamp

Country Status (8)

Country Link
US (1) US4511955A (en)
EP (1) EP0094518B1 (en)
JP (1) JPS58209801A (en)
AT (1) ATE28693T1 (en)
AU (1) AU555321B2 (en)
DD (1) DD209889A5 (en)
DE (1) DE3218702C2 (en)
ES (1) ES279982Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8809051U1 (en) * 1988-07-14 1988-09-01 Hella KG Hueck & Co, 4780 Lippstadt Signal light

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3334459C2 (en) * 1983-09-23 1993-10-21 Bosch Gmbh Robert Low beam headlight reflector for motor vehicles
DE3406876C1 (en) * 1984-02-25 1985-07-18 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Dimmed vehicle headlights
DE3535249C2 (en) * 1984-10-18 1987-03-12 Hella KG Hueck & Co, 4780 Lippstadt Dimmed vehicle headlight
US4825343A (en) * 1985-12-27 1989-04-25 Ichikoh Industries Limited Projector type headlamp for vehicles
JPS6389601U (en) * 1986-11-29 1988-06-10
JPS63304501A (en) * 1987-06-04 1988-12-12 日産自動車株式会社 Projector type automobile head light
JPH033921Y2 (en) * 1987-08-19 1991-01-31
JPS6471001A (en) * 1987-09-10 1989-03-16 Koito Mfg Co Ltd Head light of vehicle
JPS6486401A (en) * 1987-09-29 1989-03-31 Koito Mfg Co Ltd Head light of vehicle
JPH01115001A (en) * 1987-10-28 1989-05-08 Koito Mfg Co Ltd Vehicle head light
JPH01120702A (en) * 1987-11-05 1989-05-12 Koito Mfg Co Ltd Vehicle head light
JPH01232602A (en) * 1988-03-11 1989-09-18 Koito Mfg Co Ltd Head light for car
JPH0673241B2 (en) * 1988-04-04 1994-09-14 株式会社小糸製作所 Vehicle headlights
JPH0762961B2 (en) * 1988-04-08 1995-07-05 株式会社小糸製作所 Vehicle headlights
US4964025A (en) * 1988-10-05 1990-10-16 Hewlett-Packard Company Nonimaging light source
US5791771A (en) * 1995-12-19 1998-08-11 United Parcel Service Of America, Inc. Unsymmetrical elliptical reflector for spatial illumination
KR100577033B1 (en) 1997-11-28 2006-05-08 가부시키가이샤 제이에스피 Blow-molded foam and process for producing the same
DE60139525D1 (en) 2000-04-25 2009-09-24 Ichikoh Industries Ltd Headlight system for vehicles
CN109519865B (en) * 2019-01-03 2024-01-26 华域视觉科技(上海)有限公司 Method and device for increasing light type width, module unit, car lamp and car
CN109681843A (en) * 2019-02-26 2019-04-26 华域视觉科技(上海)有限公司 Car light mould group and the automobile for applying it

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1480364A (en) * 1924-01-08 Reflector
GB173243A (en) * 1920-06-23 1921-12-23 Duncan James Ritchie Improvements in lamps
US1598044A (en) * 1920-12-20 1926-08-31 Evan P Bone Headlamp
US1539696A (en) * 1921-06-16 1925-05-26 Ritchie Duncan James Lamp
GB320693A (en) * 1929-04-08 1929-10-24 Sidney Philip Holloway An improvement in glare free headlamps for motor cars, lorries and similar vehicles
US1898167A (en) * 1930-05-06 1933-02-21 Ivan L Bean Reflector
US1898166A (en) * 1930-05-06 1933-02-21 Ivan L Bean Reflector
US3191023A (en) * 1963-05-17 1965-06-22 Corning Glass Works Lighting device for dental and surgical procedures
FR1379081A (en) * 1963-10-11 1964-11-20 Improved headlamp with a substantially rectangular opening front face, in particular for motor vehicles
US3492474A (en) * 1966-12-02 1970-01-27 Koito Mfg Co Ltd Reflector with compound curvature reflecting surface
US3745325A (en) * 1971-08-17 1973-07-10 Eastman Kodak Co Photographic light
US3922073A (en) * 1973-04-25 1975-11-25 Robert A D Schwartz Light diffuser system
GB1476297A (en) * 1973-09-29 1977-06-10 Lucas Electrical Ltd Motor vehicle lamp assemblies
NL7605528A (en) * 1976-05-24 1977-11-28 Philips Nv FLASH LIGHTING DEVICE.
US4149229A (en) * 1976-06-18 1979-04-10 Lucas Industries Limited Lamp reflector with downwardly-facing step
DE2720956C2 (en) * 1977-05-10 1982-12-02 Bayerische Motoren Werke AG, 8000 München Motor vehicle headlights for low and high beam
US4149227A (en) * 1977-06-20 1979-04-10 Corning Glass Works Reflector
FR2459938B1 (en) * 1979-06-22 1985-11-08 Marchal Equip Auto LIGHTING PROJECTOR FOR MOTOR VEHICLE
DE2940249C2 (en) * 1979-10-04 1986-03-06 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Headlights, in particular motor vehicle headlights with a plastic reflector
DE3069386D1 (en) * 1979-12-22 1984-11-08 Lucas Ind Plc Motor vehicle lamp reflector
DE3125267A1 (en) * 1981-06-26 1983-01-13 Patra Patent Treuhand HALOGENELLIPSOID REFLECTOR LAMP WITH COLD LIGHT REFLECTOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8809051U1 (en) * 1988-07-14 1988-09-01 Hella KG Hueck & Co, 4780 Lippstadt Signal light

Also Published As

Publication number Publication date
ATE28693T1 (en) 1987-08-15
ES279982Y (en) 1985-06-16
ES279982U (en) 1984-12-16
DD209889A5 (en) 1984-05-23
EP0094518A2 (en) 1983-11-23
JPS58209801A (en) 1983-12-06
AU555321B2 (en) 1986-09-18
EP0094518A3 (en) 1984-11-28
DE3218702A1 (en) 1983-11-24
US4511955A (en) 1985-04-16
DE3218702C2 (en) 1987-01-29
AU1448883A (en) 1983-11-24

Similar Documents

Publication Publication Date Title
EP0094518B1 (en) Vehicle headlamp
EP3403021B1 (en) Light module for a vehicle headlamp with a dark-light-boundary
DE69308083T2 (en) Motor vehicle headlights with a two-filament light bulb for the selective generation of fog and high beam
DE60100269T2 (en) headlights
EP1912018B1 (en) Projection headlamp for vehicles
DE4229728C1 (en) Dual-reflector headlamp assembly for vehicle - has cut=outs in edge of dipped beam reflector to illuminate driving beam reflector
EP3899358B1 (en) Lighting device for a motor vehicle headlamp and motor vehicle headlamp
DE69401164T2 (en) Vehicle headlights with an ellipsoid-like reflector
DE69937917T2 (en) Automotive headlamp with a transverse light source and for generating a sharp light limitation
EP0094519A2 (en) Non dazzling vehicle headlamp
DE2921068A1 (en) VEHICLE HEADLIGHTS
EP0517878A1 (en) Headlamp for motor vehicles.
DE19805217B4 (en) Motor vehicle headlight with a mirror with laterally juxtaposed zones and method for producing such a mirror
DE3406876C1 (en) Dimmed vehicle headlights
DE4329850C2 (en) Reflector for a vehicle headlight
DE10022977B4 (en) Bifunctional ellipsoidal headlights for motor vehicles
DE4420889B4 (en) Lighting device for vehicles
DE102019207875A1 (en) VEHICLE LIGHT AND PROJECTION LINE
DE3938569A1 (en) MOTOR VEHICLE HEADLIGHTS
DE69303075T2 (en) Motor vehicle headlights according to the projection principle
EP1126211B1 (en) Projecting headlight for motor vehicle
DE3608447A1 (en) HEADLIGHTS FOR MOTOR VEHICLES WITH A PARABOLIC REFLECTOR AND AN ELLIPTICAL REFLECTOR
DE3742191C2 (en)
DE3405504C2 (en)
DE3933411C2 (en)

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

Designated state(s): AT FR GB IT NL SE

17P Request for examination filed

Effective date: 19840403

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT FR GB IT NL SE

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

Owner name: HELLA KG HUECK & CO.

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT FR GB IT NL SE

REF Corresponds to:

Ref document number: 28693

Country of ref document: AT

Date of ref document: 19870815

Kind code of ref document: T

ET Fr: translation filed
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
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19890320

Year of fee payment: 7

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

Ref country code: AT

Effective date: 19890420

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19890430

Year of fee payment: 7

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

Ref country code: SE

Effective date: 19900421

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

Ref country code: NL

Effective date: 19901101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
ITTA It: last paid annual fee
EUG Se: european patent has lapsed

Ref document number: 83103843.5

Effective date: 19910115

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990322

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990419

Year of fee payment: 17

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

Ref country code: GB

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

Effective date: 20000420

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

Effective date: 20000420

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

Ref country code: FR

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

Effective date: 20001229

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST