EP0846912B1 - Vehicle light. - Google Patents
Vehicle light. Download PDFInfo
- Publication number
- EP0846912B1 EP0846912B1 EP97890211A EP97890211A EP0846912B1 EP 0846912 B1 EP0846912 B1 EP 0846912B1 EP 97890211 A EP97890211 A EP 97890211A EP 97890211 A EP97890211 A EP 97890211A EP 0846912 B1 EP0846912 B1 EP 0846912B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- groove
- optical axis
- lie
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
Definitions
- the invention relates to a vehicle lamp with an open space reflector Surface grooves in the horizontal plane through the optical axis at right angles standing levels.
- a headlight in particular motor vehicle headlights, is known in which an outer paraboloid reflector is provided, in which above the An internal reflector segment is provided in the incandescent area, which is also Has paraboloid profile and for the central heat shielding of the external reflector serves.
- the inner reflector segment has grooves which are in relation to one another and to the optical one Axis parallel vertical planes and serve to concentrate the To prevent light bundles on the central area of the headlight windscreen - with in other words, sprinkle to the side.
- DE-PS 382 726 shows a headlight, the reflector of which is vertical, has mutually parallel grooves.
- DE 3836382 A1 relates to a flat headlight, the horizontally extending one Flat areas each have parallel, vertical channels.
- US-A 5577 833 relates to a flat headlight, the reflector in the Horizontal section an asymmetrical complex surface profile with between vertical steps extending sections. There are vertical grooves in the individual sections provided, the distribution within a section is unchanged and their number per unit length from a central section to the reflector edge decreases, the edge portions are groove-free. According to the training of the Reflector with a free surface, the headlight front window is smooth.
- the optical axis opens up the possibility of a far better one Adjustment of the light pattern depending on the reflector profile to achieve that the groove planes at different angles to Vertical plane through the optical axis - in other words, its angle to the vertical plane through the optical axis via the lateral and / or The height of the reflector varies.
- the normal plane is below the groove plane to the tangent to the groove bottom assuming a symmetrical groove cross section.
- the grooves preferably correspond to the reflector curvature, i.e. the tangent the groove bottom is parallel to the tangent to the reflector - but this need not be the case.
- the Angle to the vertical plane through the optical axis changes - and preferably over an angular range of approximately -20 ° to approximately + 20 °.
- That of the groove planes with the vertical plane through the optical axis included angles are at most about 50 °.
- a vehicle lamp is preferred with in or parallel to the optical axis running linear light source, with the groove of the images of the reflector facing light source end above the horizontal plane through the optical Groove areas lying on the axis on an imaging surface higher and that of the End of the light source facing away from the reflector, as well as the images of the End of the light source facing away from the reflector through below the horizontal plane the optical axis lying groove areas higher on an imaging surface and the of the light source end facing the reflector are lower.
- the dividing line between the upper and lower reflector half is usually that Horizontal plane through the filament or optical axis, i.e. at a long-distance or Fog lights - in the case of a low-beam headlamp according to ECE (asymmetrical) it is a quasi-horizontal limit curve. Both separating lines are to be formed by the Definition of the horizontal plane by the filament or optical axis.
- the grooves themselves are formed in the usual way when the reflector is pressed, which is usually made of heat-resistant plastic.
- the negative groove pattern will manufactured by milling on the press tool.
- the transition between the Grooves and the surrounding surface must be sharp or rounded and the distance between the individual grooves and their width is according to the desired Spreading characteristic selected.
- Fig. 1 is a view of the surface of an inventive Flat reflector with different scatter profiles and Fig. 2 is a schematic Representation of a preferred mapping mode.
- Fig. 1 you can see an asymmetrical open space reflector surface 1, which on her entire surface is provided with scattering grooves 5 and different zones of curvature has, but with the groove guide on both sides of the central plane in is essentially the same.
- Fig. 2 HK is the section line of a horizontal plane in which the in the optical axis OA extending filament GW of a lamp lies with a reflector that is a Scattering groove S carries.
- the three axes of space are in the usual way with x, y and z and it is shown how the filament on a yz plane, the H / D Level, is shown over a lying in the upper half of the reflector Groove point PO and one in the lower half of the reflector Grooved point PU.
- the end of the filament GW closer to the reflector is H and the other marked V and the illustrations HPO and HPU are in one Level EH, just like the illustrations VPO and VPU are in one level EV, whereby EH and EV are at right angles to the H / D level.
- the headlight is on Fog lights with a light / dark line D / H - you can see that VPU and HPO are closer to the light / dark line than VPO and HPU; they are preferably due to the Light / dark line.
Description
Die Erfindung betrifft eine Fahrzeugleuchte mit einem Freiflächenreflektor mit Oberflächenrillen in zur Horizontalebene durch die optische Achse im rechten Winkel stehenden Ebenen.The invention relates to a vehicle lamp with an open space reflector Surface grooves in the horizontal plane through the optical axis at right angles standing levels.
Aus der DE-OS 3107420 ist ein Scheinwerfer, insbesondere Kfz-Scheinwerfer, bekannt, bei dem ein äußerer Paraboloidreflektor vorgesehen ist, in dem oberhalb des Glühlampenbereichs ein Innenreflektorsegment vorgesehen ist, das ebenfalls Paraboloidprofil aufweist und zur zentralen Wärmeabschirmung des Außenreflektors dient. Das Innenreflektorsegment weist Rillen auf, die in zueinander und zur optischen Achse parallelen Vertikalebenen verlaufen und dazu dienen, eine Konzentration des Lichtbündels auf dem Zentralbereich der Scheinwerferfrontscheibe zu verhindern - mit anderen Worten nach der Seite streuen.DE-OS 3107420 a headlight, in particular motor vehicle headlights, is known in which an outer paraboloid reflector is provided, in which above the An internal reflector segment is provided in the incandescent area, which is also Has paraboloid profile and for the central heat shielding of the external reflector serves. The inner reflector segment has grooves which are in relation to one another and to the optical one Axis parallel vertical planes and serve to concentrate the To prevent light bundles on the central area of the headlight windscreen - with in other words, sprinkle to the side.
In der DE-PS 382 726 ist ein Scheinwerfer gezeigt, dessen Reflektor senkrechte, zueinander parallele Rillen aufweist.DE-PS 382 726 shows a headlight, the reflector of which is vertical, has mutually parallel grooves.
Die DE 3836382 A1 betrifft einen Flachscheinwerfer, dessen horizontal verlaufende Flachbereiche jeweils zueinander parallele, senkrechte Rinnen tragen.DE 3836382 A1 relates to a flat headlight, the horizontally extending one Flat areas each have parallel, vertical channels.
Die US-A 5577 833 betrifft einen Flachscheinwerfer, dessen Reflektor im Horizontalschnitt ein asymmetrisches Komplexflächenprofil mit zwischen Vertikalstufen verlaufenden Abschnitten aufweist. In den einzelnen Abschnitten sind Vertikalrillen vorgesehen, deren Verteilung innerhalb eines Abschnitts jeweils unverändert ist und deren Anzahl pro Längeneinheit von einem Zentralabschnitt zum Reflektorrand hin abnimmt, wobei die Randabschnitte rillenfrei sind. Entsprechend der Ausbildung des Reflektors mit einer Freifläche ist die Scheinwerferfrontscheibe glatt.US-A 5577 833 relates to a flat headlight, the reflector in the Horizontal section an asymmetrical complex surface profile with between vertical steps extending sections. There are vertical grooves in the individual sections provided, the distribution within a section is unchanged and their number per unit length from a central section to the reflector edge decreases, the edge portions are groove-free. According to the training of the Reflector with a free surface, the headlight front window is smooth.
Ausgehend von diesem Stand der Technik mit Rillen in Vertikalebenen parallel zur optischen Achse wird erfindungsgemäß die Möglichkeit eröffnet, eine weitaus bessere Einstellbarkeit des Lichtmusters in Abhängigkeit von der Reflektorprofilierung dahingehend zu erzielen, daß die Rillenebenen in unterschiedlichen Winkeln zur Vertikalebene durch die optische Achse verlaufen - mit anderen Worten deren Winkel zur Vertikalebene durch die optische Achse über die Lateral- und/oder Höhenerstreckung des Reflektors variieren.Based on this prior art with grooves in vertical planes parallel to According to the invention, the optical axis opens up the possibility of a far better one Adjustment of the light pattern depending on the reflector profile to achieve that the groove planes at different angles to Vertical plane through the optical axis - in other words, its angle to the vertical plane through the optical axis via the lateral and / or The height of the reflector varies.
Dabei ist unter Rillenebene die Normalebene auf die Tangente an den Rillenboden unter Annahme eines symmetrischen Rillenquerschnitts zu verstehen.The normal plane is below the groove plane to the tangent to the groove bottom assuming a symmetrical groove cross section.
Bevorzugt entsprechen dabei die Rillen der Reflektorkrümmung, d.h. die Tangente an den Rillenboden ist parallel zur Tangente an den Reflektor - dies muß aber nicht so sein.The grooves preferably correspond to the reflector curvature, i.e. the tangent the groove bottom is parallel to the tangent to the reflector - but this need not be the case.
Erfindungsgemäß ändert sich entlang einer einzigen Rille die Rillenebene, wobei sich der Winkel zur Vertikalebene durch die optische Achse ändert - und zwar vorzugsweise über einen Winkelbereich von etwa -20° bis etwa + 20°.According to the invention changes along a single groove, the groove plane, the Angle to the vertical plane through the optical axis changes - and preferably over an angular range of approximately -20 ° to approximately + 20 °.
Die von den Rillenebenen mit der Vertikalebene durch die optische Achse eingeschlossenen Winkel betragen höchstens etwa 50°.That of the groove planes with the vertical plane through the optical axis included angles are at most about 50 °.
Bevorzugt ist eine Fahrzeugleuchte mit in der oder parallel zur optischen Achse verlaufenden linearen Lichtquelle, wobei pro Rille die Abbildungen des dem Reflektor zugewandten Lichtquellenendes über oberhalb der Horizontalebene durch die optische Achse liegende Rillenbereiche auf einer Abbildungsfläche höher und die des vom Reflektor abgewandten Lichtquellenendes tiefer, sowie die Abbildungen des vom Reflektor abgewandten Lichtquellenendes über unterhalb der Horizontalebene durch die optische Achse liegende Rillenbereiche auf einer Abbildungsfläche höher und die des dem Reflektor zugewandten Lichtquellenendes tiefer liegen. Dabei soll z.B. bei einen Nebelscheinwerfer das hintere Lichtquellenende bei einer Abbildung über einen Punkt der oberen Reflektorhälfte nicht nur höher, sondern an der Hell-Dunkel-Grenze liegen, ebenso wie das vordere Lichtquellenende bei einer Abbildung über einen Punkt der oberen Reflektorhälfte tiefer, aber auch an der Hell-Dunkel-Grenze. A vehicle lamp is preferred with in or parallel to the optical axis running linear light source, with the groove of the images of the reflector facing light source end above the horizontal plane through the optical Groove areas lying on the axis on an imaging surface higher and that of the End of the light source facing away from the reflector, as well as the images of the End of the light source facing away from the reflector through below the horizontal plane the optical axis lying groove areas higher on an imaging surface and the of the light source end facing the reflector are lower. For example, at a fog lamp the rear end of the light source in an illustration above Point of the upper half of the reflector not only higher, but at the cut-off as well as the front end of the light source in the case of an image over a point the upper half of the reflector lower, but also at the cut-off line.
Die Trennlinie zwischen oberer und unterer Reflektorhälfte ist in der Regel die Horizontalebene durch die Glühwendel bzw. optische Achse, d.h. bei einem Fern- oder Nebelscheinwerfer - bei einem Abblendscheinwerfer nach ECE (asymmetrisch) ist sie eine quasihorizontale Grenzkurve. Beide Trennlinienausbildungen sollen durch die Definition Horizontalebene durch die Glühwendel bzw. optische Achse umfaßt sein.The dividing line between the upper and lower reflector half is usually that Horizontal plane through the filament or optical axis, i.e. at a long-distance or Fog lights - in the case of a low-beam headlamp according to ECE (asymmetrical) it is a quasi-horizontal limit curve. Both separating lines are to be formed by the Definition of the horizontal plane by the filament or optical axis.
Die Ausbildung der Rillen selbst erfolgt in üblicher Weise beim Pressen des Reflektors, der in der Regel aus warmfestem Kunststoff besteht. Das negative Rillenmuster wird durch Fräsen am Preßwerkzeug hergestellt. Dabei kann der Übergang zwischen den Rillen und der Umgebungsfläche scharfkantig oder abgerundet sein und der Abstand zwischen den einzelnen Rillen und deren Breite wird nach der angestrebten Streucharakteristik gewählt.The grooves themselves are formed in the usual way when the reflector is pressed, which is usually made of heat-resistant plastic. The negative groove pattern will manufactured by milling on the press tool. The transition between the Grooves and the surrounding surface must be sharp or rounded and the distance between the individual grooves and their width is according to the desired Spreading characteristic selected.
In der Zeichnung ist Fig. 1 eine Ansicht der Oberfläche eines erfindungsgemäßen Flachreflektors mit verschiedenen Streuprofilen und Fig. 2 eine schematische Darstellung eines bevorzugten Abbildungsmodus.In the drawing, Fig. 1 is a view of the surface of an inventive Flat reflector with different scatter profiles and Fig. 2 is a schematic Representation of a preferred mapping mode.
In Fig. 1 erkennt man eine asymmetrische Freiflächenreflektorfläche 1, die auf ihrer
gesamten Oberfläche mit Streurillen 5 versehen ist und verschiedene Krümmungszonen
aufweist, wobei aber die Rillenführung zu beiden Seiten der Mittelebene im
wesentlichen gleich ist.In Fig. 1 you can see an asymmetrical open
In Fig. 2 ist HK die Schnittlinie einer Horizontalebene, in der die in der optischen Achse OA verlaufende Glühwendel GW einer Lampe liegt, mit einem Reflektor, der eine Streurille S trägt. Die drei Achsen des Raums sind in üblicher Weise mit x, y und z bezeichnet und es ist dargestellt, wie die Glühwendel auf einer yz-Ebene, der H/D Ebene, abgebildet wird über einen in der oberen Hälfte des Reflektors liegenden Rillenpunkt PO und über einen in der unteren Hälfte des Reflektors liegenden Rillenpunkt PU. Das näher am Reflektor liegende Ende der Glühwendel GW ist mit H und das andere mit V bezeichnet und die Abbildungen HPO und HPU liegen in einer Ebene EH, ebenso wie die Abbildungen VPO und VPU in einer Ebene EV liegen, wobei EH und EV im rechten Winkel auf die H/D-Ebene stehen. Der Scheinwerfer ist ein Nebelscheinwerfer mit einer Hell/Dunkellinie D/H - man erkennt, daß VPU und HPO näher an der Hell/Dunkellinie liegen als VPO und HPU; bevorzugt liegen sie an der Hell/Dunkellinie.In Fig. 2 HK is the section line of a horizontal plane in which the in the optical axis OA extending filament GW of a lamp lies with a reflector that is a Scattering groove S carries. The three axes of space are in the usual way with x, y and z and it is shown how the filament on a yz plane, the H / D Level, is shown over a lying in the upper half of the reflector Groove point PO and one in the lower half of the reflector Grooved point PU. The end of the filament GW closer to the reflector is H and the other marked V and the illustrations HPO and HPU are in one Level EH, just like the illustrations VPO and VPU are in one level EV, whereby EH and EV are at right angles to the H / D level. The headlight is on Fog lights with a light / dark line D / H - you can see that VPU and HPO are closer to the light / dark line than VPO and HPU; they are preferably due to the Light / dark line.
Claims (3)
- Vehicle light having a free surface reflector (1) with surface grooves (5) in groove planes which are at a right angle to the horizontal plane (x, z) through the optical axis (x), wherein in this case groove planes are to be understood to mean the normal planes on tangents, which extend parallel to the horizontal plane (x, z), onto the bottom of the grooves assuming that the groove cross-section is symmetrical, characterised in that the groove planes form angles, which change over the course of the grooves, with the vertical plane (x, y) through the optical axis (x), wherein the range of angles is preferably from about -20° to about +20°.
- Vehicle light as claimed in claim 1, characterised in that the angles formed by the groove planes and the vertical plane (x, y) through the optical axis (x) lie in the range of up to about 50°.
- Vehicle light as claimed in claim 1 or 2, with a linear light source (GW) extending in, or parallel to the optical axis (x), wherein per groove (5) the images of the light source end (H) which faces the reflector, over groove regions which lie above the horizontal plane (x, z) through the optical axis (x), lie higher up on an imaging surface, and those of the light source end (V) which faces away from the reflector (1) lie lower down, and the images of the light source end (V) which faces away from the reflector, over groove regions which lie below the horizontal plane (x, z) through the optical axis (x), lie higher up on an imaging surface, and those of the light source end (H) which faces the reflector (1) lie lower down.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT212796 | 1996-12-05 | ||
| AT2127/96 | 1996-12-05 | ||
| AT0212796A AT404396B (en) | 1996-12-05 | 1996-12-05 | RILLED HEADLIGHT |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0846912A2 EP0846912A2 (en) | 1998-06-10 |
| EP0846912A3 EP0846912A3 (en) | 2000-07-26 |
| EP0846912B1 true EP0846912B1 (en) | 2003-08-13 |
Family
ID=3528355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97890211A Expired - Lifetime EP0846912B1 (en) | 1996-12-05 | 1997-10-23 | Vehicle light. |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0846912B1 (en) |
| AT (1) | AT404396B (en) |
| DE (1) | DE59710572D1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATA128399A (en) | 1999-07-23 | 2005-09-15 | Zizala Lichtsysteme Gmbh | HEADLIGHTS FOR MOTOR VEHICLES |
| AT413753B (en) | 1999-08-16 | 2006-05-15 | Zizala Lichtsysteme Gmbh | VEHICLE HEADLIGHTS |
| DE10033385B4 (en) * | 2000-07-08 | 2007-05-03 | Hella Kgaa Hueck & Co. | Vehicle light |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1390747A (en) * | 1920-06-15 | 1921-09-13 | Flatlite Ltd | Reflector for use in light-projectors |
| US1513844A (en) * | 1922-01-03 | 1924-11-04 | Guide Motor Lamp Mfg Company | Reflector for automobile lamps |
| FR2487040A1 (en) | 1980-02-29 | 1982-01-22 | Marchal Equip Auto | LIGHTING PROJECTOR IN PARTICULAR FOR MOTOR VEHICLES |
| DE3406876C1 (en) * | 1984-02-25 | 1985-07-18 | Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt | Dimmed vehicle headlights |
| DE3836382A1 (en) * | 1988-10-26 | 1990-05-03 | Hella Kg Hueck & Co | SHELL-SHAPED REFLECTOR FOR A VEHICLE HEADLIGHT |
| FR2732446B1 (en) * | 1995-03-31 | 1997-06-20 | Valeo Vision | METHOD FOR MANUFACTURING A MOTOR VEHICLE PROJECTOR MIRROR AND PROJECTOR INCORPORATING A SELECTIVE LIGHT DEFLECTION MIRROR |
| US5577833A (en) * | 1995-06-13 | 1996-11-26 | Osram Sylvania Inc. | Vehicle headlamp reflector |
-
1996
- 1996-12-05 AT AT0212796A patent/AT404396B/en not_active IP Right Cessation
-
1997
- 1997-10-23 DE DE59710572T patent/DE59710572D1/en not_active Expired - Fee Related
- 1997-10-23 EP EP97890211A patent/EP0846912B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59710572D1 (en) | 2003-09-18 |
| EP0846912A2 (en) | 1998-06-10 |
| ATA212796A (en) | 1998-03-15 |
| EP0846912A3 (en) | 2000-07-26 |
| AT404396B (en) | 1998-11-25 |
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