EP0094518B1 - Vehicle headlamp - Google Patents
Vehicle headlamp Download PDFInfo
- 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
Links
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
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 undFigur 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.
- 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 :
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
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
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
Claims (5)
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) |
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DE8809051U1 (en) * | 1988-07-14 | 1988-09-01 | Hella KG Hueck & Co, 4780 Lippstadt | Signal light |
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DE3535249C2 (en) * | 1984-10-18 | 1987-03-12 | Hella KG Hueck & Co, 4780 Lippstadt | Dimmed vehicle headlight |
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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 |
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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 |
-
1982
- 1982-05-18 DE DE3218702A patent/DE3218702C2/en not_active Expired
-
1983
- 1983-04-20 EP EP83103843A patent/EP0094518B1/en not_active Expired
- 1983-04-20 AT AT83103843T patent/ATE28693T1/en not_active IP Right Cessation
- 1983-05-11 DD DD83250845A patent/DD209889A5/en not_active IP Right Cessation
- 1983-05-12 AU AU14488/83A patent/AU555321B2/en not_active Ceased
- 1983-05-16 JP JP58084270A patent/JPS58209801A/en active Pending
- 1983-05-16 US US06/494,761 patent/US4511955A/en not_active Expired - Fee Related
- 1983-05-17 ES ES1983279982U patent/ES279982Y/en not_active Expired
Cited By (1)
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 |
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