EP0658243B1 - Signal lamp - Google Patents
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- EP0658243B1 EP0658243B1 EP93919104A EP93919104A EP0658243B1 EP 0658243 B1 EP0658243 B1 EP 0658243B1 EP 93919104 A EP93919104 A EP 93919104A EP 93919104 A EP93919104 A EP 93919104A EP 0658243 B1 EP0658243 B1 EP 0658243B1
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- EP
- European Patent Office
- Prior art keywords
- light
- segments
- signal lamp
- lens system
- light filter
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- 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.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/255—Filters
Definitions
- the invention relates to a signal lamp, in particular for motor vehicles, with a light source, with a housing, with a cover plate which has a transparent color, preferably red, and with one or more light filters arranged between the light sources and the cover plate.
- Such a signal lamp is known from DE 33 26 199 Al.
- This signal light which is used on motor vehicles, has a pink lens and in its interior another colored filter, whereby a red, yellow or white signal light can be generated by selecting a specific color for this filter.
- a red, yellow or white signal light can be generated by selecting a specific color for this filter.
- the cover plate appears in a strong red despite the intrinsic color pink when the light source of the signal lamp is switched off, which is not or only slightly influenced by the color of the inner filter, there are red colored stripes in the lamp between the inner filter and the cover plate available.
- the various proposed arrangements of the strips all have certain disadvantages. Either only a small amount of the amount of light emitted by the light source or not the entire surface of the lens can be used for signal output. Also, some arrangements are not very suitable for keeping the influence of the inner filter on the color of the lens small when switched off. Finally, even with great technical efforts, an influence of the red-colored stripes on the color of the signal light cannot be completely avoided
- a vehicle lamp which has a colored, translucent cover pane with alternately arranged areas of different pane thicknesses.
- an optical disc with a plurality of converging lenses which are arranged in such a way that the light coming from the light source is in principle passed exclusively through the areas of the cover plate with a small pane thickness.
- the cover plate has no color filter function, so the color of the emitted light signal is determined solely by the color filter effect of the optical plate.
- the thicker areas of the cover plate are intended to reflect the known extraneous light effect, i.e. to avoid the appearance of a signal lamp in operation in the event of extraneous light. It is disadvantageous that when the light source is switched off, the sections of greater thickness of the cover pane appear substantially darker than the sections of smaller pane thickness.
- EP 0 211 742 A1 discloses a signal lamp in which color-impermeable webs have been dispensed with.
- the end lens is provided in strips with a color filter which conveys a certain color to the light rays passing through this area.
- the areas of the cover plate, which are equipped without a filter, are preceded by a filter in an upstream plane, so that the light rays crossing this area also have a color.
- all of the light passed through the lens has a homogeneous color.
- This signal light is considered to be disadvantageous in that the lens has alternately colored and clear stripes and therefore does not give an aesthetically pleasing impression.
- the large number of successive switched color filter reduces the light output, especially when generating white light, whereby the red of the colored lens must be filtered out by subtractive color mixing.
- Another disadvantage is seen in the fact that the lens can only be designed in a very bright red or pink, since the light losses would be relatively high with a more intense red.
- the invention is therefore based on the object of providing a signal lamp which, when switched off, gives an intense red color impression and has low light losses.
- the lens has a continuous color, that the lens is broken down into segments of different thickness and that the light filter is provided with a recess.
- the coloring of the lens Due to the continuous coloring of the lens, it appears in a uniform, for example red, color.
- the coloring can be an intense red.
- the advantage is achieved that the light emitted by the light source in the areas where the segments with large lens thickness are provided passes through the recesses of the light filter and therefore is not additionally weakened by the light filter.
- the sections of the light filter which are stored between the cutouts and where the light is colored.
- the coloring of the light weakens its intensity, the light only has to cover the segments of the lens traverse that have a small slice thickness. Because of this configuration, the signal light has an intense red color in the switched-off state and a high light intensity in the switched-on state, since only the light component that has to pass through the segments with a small pane thickness has to pass through an additional light filter.
- the segments of different slice thickness have different widths, the segments with a smaller slice thickness in particular being narrower than the segments with a larger slice thickness. This gives the signal lamp an essentially uniform appearance, since the segments with a smaller pane thickness, which appear slightly lighter, have a very small width and therefore have almost no effect on the overall impression.
- At least one lens system is preferably arranged between the light filter and the lens. This lens system has the task of diffusing at least part of the light passing through the lens, so that the light mixes additively after it has passed through the lens.
- the lens system is formed by lenses arranged on the segments with a large pane thickness, the lenses and the segments being formed in particular in one piece. This configuration has the advantage that a separate component having the lens system can be saved, since the lens system is provided directly on the back or inner surface of the cover lens.
- a lens system is arranged between the light source and the light filter. Part of the light emitted by the light source is bundled via this lens system and in particular transmitted through the light filter and through the segments of the cover lens arranged behind it with a small lens thickness. By bundling the light, this bundle of light is directed specifically through the relevant segment of the cover lens.
- the lens system is advantageously formed by lenses arranged on the light filter, the lenses and the light filter being formed in particular in one piece. This also eliminates the need for a separate component which has the lens system.
- the lenses of the two lens systems can have any desired shape, i.e. be either concave and / or convex.
- the back and / or the front of the light filter and / or the lens can be designed as a lens system.
- the lens system has cutouts in the area of the cutouts of the light filter.
- lenses are therefore only provided where a light filter is provided for the light emitted by the light source, so that only this light, which passes through the light filter, is deflected.
- the lenses of the two lens systems can either be designed as cylindrical lobes, as rotationally symmetrical lenses or with a corresponding shape.
- the light from the light source is preferably refracted either by the lens system assigned to the light filter or by the lens system assigned to the cover plate. This has the advantage that part of the light is not deflected by both lens systems, but each lens system deflects a special area or portion of the light emitted by the light source in accordance with the design of the respective lens system.
- the focal points of the lens system assigned to the light filter lie in the region of the segments with a smaller pane thickness, in particular on the inside or outside surface of the cover pane.
- the focal points of the lens system assigned to the lens are enlarged at a distance from the outer surface, the difference in thickness within the segments with greater lens thickness is reduced, as a result of which the color intensity of the entire lens is evened out.
- the distance of the light filter from the inner surface of the cover lens is preferably different for different signal colors. In this way, the proportion of light that passes through the segments with a larger pane thickness or the segments with a smaller pane thickness can be controlled in a targeted manner.
- the desired signal color can advantageously be generated by color subtraction with subsequent color addition.
- the color subtraction creates the color parts that later result in the desired signal color due to the color addition.
- the color intensity is increased by the color addition.
- the light beams 1 to 4 coming from a light source which are aligned in a parallel direction by suitable optical means, first strike a light filter 5 and then a cover disk 6 and leave it outside.
- the design of the other elements of the signal light are not shown and correspond to the usual design.
- the light emerging from the signal lamp has a signal color which is usually either white, yellow or orange, or red.
- the light filter 5 has cutouts 7 in which the light does not undergo a color change.
- the areas 8 lying between the cutouts 7 impart a different color to the light passing through these areas 8 by filtering out a specific wave range.
- these areas 8 provided with a convex surface 9 through which lenses 10 are formed.
- these lenses 10 produce a lens system 11, which is assigned to the light filter 5. Accordingly, the light bundles crossing the regions 8 are deflected such that they converge on the focal point 12 of the lenses 10. The light bundles crossing the recesses 7 are not deflected and therefore maintain their direction.
- the cover disk 6 is divided into segments 13 and 14, the segments 13 having a smaller thickness d than the segments 14.
- the segments 13 and 14 are arranged alternately.
- the segments 14 are configured on their side facing the light source with a convex surface 15, through which the lenses 16 of a lens system 17 are formed.
- the segments 14 have slanted side walls 18, the angle of inclination of the side wall 18 essentially corresponding to the angle of inclination of the boundary beam 19 of the light beam passing through the segment 13. It can also be seen that not only the thickness d of the segment 13 is less than the thickness D of the segment 14, but also the width b of the segment 13 is smaller with respect to the width B of the segment 14.
- an area 8 of the light filter 5 lies at the level of a segment 13, so that the light bundle passing this area 8 only passes through the segment 13 with a small thickness d.
- the light beam passing through the recess 7 then only crosses the segment 14 arranged behind it and is deflected therein.
- the segments 13 have a small thickness d compared to the segments 14, the reduction in the light intensity is relatively small.
- the cover plate 6 still has a uniform appearance with regard to the color, but due to the intensive coloring of the cover plate 6, an intensely red color impression prevails.
- the distance A between the light filter 5 and the cover plate 6 is significantly smaller than in the exemplary embodiment in FIG. 1, so that the regions 8 having the color filter 5 also have a smaller width.
- the recesses 7 are therefore larger. This has the advantage that the light bundles passing through the recesses 7 are larger and accordingly more light is guided through the segments 14.
- the light emerging from the segments 14 has an intensely red color. Accordingly, the light filter 5 must be designed so that the light beams formed by the boundary beams 2 and 3, which pass through the areas 8 and pass through the segments 13, also have the intense red color. This is going on easily achieved in that the light filter 5 is a red filter.
- the light filter 5 is a yellow filter, then a yellow color can be imparted to the light bundle delimited by the boundary beams 2 and 3, so that an orange color is produced by adding this light bundle with the light bundle which passes through the segment 14.
- the addition of these two colors is complete from level E and the mixture is homogeneous.
- One or more further optical disks for optimizing the homogeneous color impression can be arranged between the color filter 5 and the lens 6.
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- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine Signalleuchte, insbesondere für Kraftfahrzeuge, mit einer Lichtquelle, mit einem Gehäuse, mit einer Abschlußscheibe, die eine transparente Einfärbung, vorzugsweise rot, aufweist, und mit einem oder mehreren zwischen den Lichtquellen und der Abschlußscheibe angeordneten Lichtfiltern.The invention relates to a signal lamp, in particular for motor vehicles, with a light source, with a housing, with a cover plate which has a transparent color, preferably red, and with one or more light filters arranged between the light sources and the cover plate.
Eine derartige Signalleuchte ist aus der DE 33 26 199 Al bekannt. Diese Signalleuchte, die an Kraftfahrzeugen verwendet wird, besitzt eine rosafarbene Abschlußscheibe und in ihrem Inneren einen weiteren farbigen Filter, wobei durch die Auswahl einer bestimmten Farbe für diesen Filter ein rotes, gelbes oder auch weißes Signallicht erzeugt werden kann. Um im ausgeschalteten Zustand der Lichtquelle der Signalleuchte die Abschlußscheibe trotz der Eigenfarbe rosa in einem kräftigen Rot erscheinen zu lassen, das durch die Farbe des inneren Filters nicht oder nur wenig beeinflußt wird, sind in der Leuchte zwischen dem inneren Filter und der Abschlußscheibe rot eingefärbte Streifen vorhanden. Die verschiedenen vorgeschlagenen Anordnungen der Streifen sind alle mit bestimmten Nachteilen behaftet. Entweder kann nur eine geringe Menge der von der Lichtquelle abgestrahlten Lichtmenge oder nicht die gesamte Fläche der Abschlußscheibe zur Signalabgabe verwendet werden. Auch sind manche Anordnungen nur wenig geeignet, im ausgeschalteten Zustand den Einfluß des inneren Filters auf die Farbe der Abschlußscheibe gering zu halten. Schließlich ist auch mit großen technischen Anstrengungen ein Einfluß der rotfarbigen Streifen auf die Farbe des Signallichts nicht ganz zu vermeiden.Such a signal lamp is known from DE 33 26 199 Al. This signal light, which is used on motor vehicles, has a pink lens and in its interior another colored filter, whereby a red, yellow or white signal light can be generated by selecting a specific color for this filter. In order to make the cover plate appear in a strong red despite the intrinsic color pink when the light source of the signal lamp is switched off, which is not or only slightly influenced by the color of the inner filter, there are red colored stripes in the lamp between the inner filter and the cover plate available. The various proposed arrangements of the strips all have certain disadvantages. Either only a small amount of the amount of light emitted by the light source or not the entire surface of the lens can be used for signal output. Also, some arrangements are not very suitable for keeping the influence of the inner filter on the color of the lens small when switched off. Finally, even with great technical efforts, an influence of the red-colored stripes on the color of the signal light cannot be completely avoided.
Aus der EP 0 074 727 Al ist eine Fahrzeugleuchte bekannt geworden, die eine eingefärbte lichtdurchlässige Abdeckscheibe mit alternierend angeordneten Bereichen unterschiedlicher Scheibendicken aufweist. Zwischen der Abdeckscheibe und der Lichtquelle ist eine Optikscheibe mit einer Vielzahl von Sammellinsen vorgesehen, welche so angeordnet sind, daß das von der Lichtquelle kommende Licht im Prinzip ausschließlich durch die Bereiche der Abdeckscheibe mit geringer Scheibendicke geleitet wird. Die Abdeckscheibe hat keine Farbfilterfunktion, die Farbe des abgegebenen Lichtsignales wird also allein duch die Farbfilterwirkung der Optikscheibe bestimmt. Die dickeren Bereiche der Abdeckscheibe sind dazu bestimmt, den bekannten Fremdlichteffekt, d.h. den Anschein einer in Funktion befindlichen Signalleuchte bei Fremdlichteinfall, zu vermeiden. Nachteilig ist, daß bei ausgeschalteter Lichtquelle die Abschnitte größerer Dicke der Abdeckscheibe wesentlich dunkler erscheinen als die Abschnitte geringerer Scheibendicke.From EP 0 074 727 A1 a vehicle lamp has become known which has a colored, translucent cover pane with alternately arranged areas of different pane thicknesses. Between the cover plate and the light source there is an optical disc with a plurality of converging lenses which are arranged in such a way that the light coming from the light source is in principle passed exclusively through the areas of the cover plate with a small pane thickness. The cover plate has no color filter function, so the color of the emitted light signal is determined solely by the color filter effect of the optical plate. The thicker areas of the cover plate are intended to reflect the known extraneous light effect, i.e. to avoid the appearance of a signal lamp in operation in the event of extraneous light. It is disadvantageous that when the light source is switched off, the sections of greater thickness of the cover pane appear substantially darker than the sections of smaller pane thickness.
Mit der EP 0 211 742 Al ist eine Signalleuchte bekannt geworden, bei der auf farbundurchlässige Stege verzichtet worden ist. Bei dieser Signalleuchte ist die Abschlußscheibe streifenweise mit einem Farbfilter versehen, der den diesen Bereich durchtretenden Lichtstrahlen eine gewisse Farbe vermittelt. Den Bereichen der Abschlußscheibe, die ohne Filter ausgestattet sind, ist in einer vorgelagerten Ebene ein Filter vorgeschaltet, so daß auch die diesen Bereich durchquerenden Lichtstrahlen eine Farbe ausweisen. In einem bestimmten Abstand hinter der Abschlußscheibe weist das gesamte die Abschlußscheibe passierte Licht eine homogene Farbe auf. Bei dieser Signalleuchte wird als nachteilig angesehen, daß die Abschlußscheibe abwechselnd eingefärbte und klare Streifen aufweist, und daher keinen ästhetisch ansprechenden Eindruck vermittelt. Außerdem wird durch die Vielzahl hintereinander geschalteter Farbfilter die Lichtausbeute reduziert, speziell bei der Erzeugung von weißem Licht, wobei das Rot der eingefärbten Abschlußscheibe durch subtraktive Farbmischung ausgefiltert werden muß. Ein weiterer Nachteil wird dadurch gesehen, daß die Abschlußscheibe nur in einem sehr hellen Rot bzw. in Rosa ausgelegt sein kann, da bei einem intensiveren Rot die Lichtverluste verhältnismäßig hoch wären.EP 0 211 742 A1 discloses a signal lamp in which color-impermeable webs have been dispensed with. In this signal light, the end lens is provided in strips with a color filter which conveys a certain color to the light rays passing through this area. The areas of the cover plate, which are equipped without a filter, are preceded by a filter in an upstream plane, so that the light rays crossing this area also have a color. At a certain distance behind the lens, all of the light passed through the lens has a homogeneous color. This signal light is considered to be disadvantageous in that the lens has alternately colored and clear stripes and therefore does not give an aesthetically pleasing impression. In addition, the large number of successive switched color filter reduces the light output, especially when generating white light, whereby the red of the colored lens must be filtered out by subtractive color mixing. Another disadvantage is seen in the fact that the lens can only be designed in a very bright red or pink, since the light losses would be relatively high with a more intense red.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Signalleuchte zu schaffen, die in ausgeschaltetem Zustand einen intensiven roten Farbeindruck vermittelt und die geringe Lichtverluste besitzt.The invention is therefore based on the object of providing a signal lamp which, when switched off, gives an intense red color impression and has low light losses.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Abschlußscheibe eine durchgehende Einfärbung aufweist, daß die Abschlußscheibe in Segmente unterschiedlicher Scheibendicke aufgegliedert ist, und daß der Lichtfilter mit Aussparung versehen ist.This object is achieved in that the lens has a continuous color, that the lens is broken down into segments of different thickness and that the light filter is provided with a recess.
Durch die durchgehende Einfärbung der Abschlußscheibe erscheint diese in einer einheitlichen, z.B. roten Farbe. Die Einfärbung kann ein intensives Rot sein. Durch die Aufgliederung der Abschlußscheibe in Segmente mit unterschiedlicher Scheibendicke und die Ausstattung des Lichtfilters mit Aussparungen wird der Vorteil erzielt, daß das von der Lichtquelle ausgesandte Licht in den Bereichen, wo die Segmente mit großer Scheibendicke vorgesehen sind, durch die Aussparungen des Lichtfilters hindurchtritt und daher nicht zusätzlich vom Lichtfilter abgeschwächt wird. In den Bereichen der Segmente mit geringer Scheibendicke befinden sich die zwischen den Aussparungen gelagerten Abschnitte des Lichtfilters, wo das Licht eingefärbt wird. Zwar wird durch die Einfärbung des Lichts dessen Intensität geschwächt, jedoch muß das Licht nur noch die Segmente der Abschlußscheibe durchqueren, die eine geringe Scheibendicke aufweisen. Aufgrund dieser Ausgestaltung besitzt die Signal leuchte im ausgeschalteten Zustand eine intensive Rotfärbung und im eingeschalteten Zustand eine hohe Lichtintensität, da lediglich der Lichtanteil, der durch die Segmente mit geringer Scheibendicke hindurchtreten muß, einen zusätzlichen Lichtfilter passieren muß.Due to the continuous coloring of the lens, it appears in a uniform, for example red, color. The coloring can be an intense red. By dividing the cover lens into segments with different lens thickness and equipping the light filter with recesses, the advantage is achieved that the light emitted by the light source in the areas where the segments with large lens thickness are provided passes through the recesses of the light filter and therefore is not additionally weakened by the light filter. In the areas of the segments with a small pane thickness, there are the sections of the light filter which are stored between the cutouts and where the light is colored. Although the coloring of the light weakens its intensity, the light only has to cover the segments of the lens traverse that have a small slice thickness. Because of this configuration, the signal light has an intense red color in the switched-off state and a high light intensity in the switched-on state, since only the light component that has to pass through the segments with a small pane thickness has to pass through an additional light filter.
Bei einer Weiterbildung ist vorgesehen, daß die Segmente unterschiedlicher Scheibendicke verschiedene Breiten aufweisen, wobei insbesondere die Segmente mit geringerer Scheibendicke schmäler ausgebildet sind als die Segmente mit größerer Scheibendicke. Hierdurch wird der Signalleuchte ein im wesentlichen einheitliches Aussehen vermittelt, da die Segmente mit geringerer Scheibendicke, die geringfügig heller erscheinen, eine sehr geringe Breite aufweisen und daher den Gesamteindruck nahezu nicht beeinflussen.In a further development it is provided that the segments of different slice thickness have different widths, the segments with a smaller slice thickness in particular being narrower than the segments with a larger slice thickness. This gives the signal lamp an essentially uniform appearance, since the segments with a smaller pane thickness, which appear slightly lighter, have a very small width and therefore have almost no effect on the overall impression.
Bevorzugt ist zwischen dem Lichtfilter und der Abschlußscheibe wenigstens ein Linsensystem angeordnet. Dieses Linsensystem hat die Aufgabe, wenigstens einen Teil des die Abschlußscheibe passierenden Lichts zu zerstreuen, so daß sich das Licht nach dem Durchtritt durch die Abschlußscheibe additiv mischt.At least one lens system is preferably arranged between the light filter and the lens. This lens system has the task of diffusing at least part of the light passing through the lens, so that the light mixes additively after it has passed through the lens.
Bei einem Ausführungsbeispiel wird das Linsensystem von auf den Segmenten mit großer Scheibendicke angeordneten Linsen gebildet, wobei die Linsen und die Segmente insbesondere einstückig ausgebildet sind. Diese Ausgestaltung hat den Vorteil, daß ein separates, das Linsensystem aufweisendes Bauelement eingespart werden kann, da das Linsensystem direkt auf der Rückseite bzw. Innenfläche der Abschlußscheibe vorgesehen ist.In one embodiment, the lens system is formed by lenses arranged on the segments with a large pane thickness, the lenses and the segments being formed in particular in one piece. This configuration has the advantage that a separate component having the lens system can be saved, since the lens system is provided directly on the back or inner surface of the cover lens.
Bei einem weiteren Ausführungsbeispiel ist vorgesehen, daß zwischen der Lichtquelle und dem Lichtfilter ein Linsensystem angeordnet ist. Über dieses Linsensystem wird ein Teil des von der Lichtquelle ausgesandten Lichts gebündelt und insbesondere durch den Lichtfilter und durch die dahinter angeordneten Segmente der Abschlußscheibe mit geringer Scheibendicke gesandt. Durch die Bündelung des Lichts wird dieses Lichtbündel gezielt durch das betreffende Segment der Abschlußscheibe gelenkt.In a further embodiment it is provided that a lens system is arranged between the light source and the light filter. Part of the light emitted by the light source is bundled via this lens system and in particular transmitted through the light filter and through the segments of the cover lens arranged behind it with a small lens thickness. By bundling the light, this bundle of light is directed specifically through the relevant segment of the cover lens.
Auch hier wird vorteilhaft das Linsensystem von auf dem Lichtfilter angeordneten Linsen gebildet, wobei die Linsen und der Lichtfilter insbesondere einstückig ausgebildet sind. Hierdurch erübrigt sich auch hier ein separates Bauteil, welches das Linsensystem aufweist. Die Linsen der beiden Linsensysteme können jede gewünschte Form aufweisen, d.h. entweder konkav und/oder konvex geformt sein. Ferner kann die Rückseite und/oder die Vorderseite des Lichtfilters und/oder der Abschlußscheibe als Linsensystem ausgebildet sein.Here, too, the lens system is advantageously formed by lenses arranged on the light filter, the lenses and the light filter being formed in particular in one piece. This also eliminates the need for a separate component which has the lens system. The lenses of the two lens systems can have any desired shape, i.e. be either concave and / or convex. Furthermore, the back and / or the front of the light filter and / or the lens can be designed as a lens system.
Bei einer Weiterbildung ist vorgesehen, daß das Linsensystem Aussparungen im Bereich der Aussparungen des Lichtfilters aufweist. Bei dieser Ausführungsform sind also nur dort Linsen vorgesehen, wo ein Lichtfilter für das von der Lichtquelle ausgesandte Licht vorgesehen ist, so daß nur dieses, den Lichtfilter passierende Licht, abgelenkt wird. Dabei können die Linsen der beiden Linsensysteme entweder als Zylinderlappen, als rotationssymmetrische Linsen oder mit einer entsprechenden Form ausgebildet sein.In a further development it is provided that the lens system has cutouts in the area of the cutouts of the light filter. In this embodiment, lenses are therefore only provided where a light filter is provided for the light emitted by the light source, so that only this light, which passes through the light filter, is deflected. The lenses of the two lens systems can either be designed as cylindrical lobes, as rotationally symmetrical lenses or with a corresponding shape.
Mit Vorzug wird das Licht der Lichtquelle entweder von dem dem Lichtfilter zugordneten Linsensystem oder von dem der Abdeckscheibe zugeordneten Linsensystem gebrochen. Dies hat den Vorteil, daß ein Teil des Lichtes nicht von beiden Linsensystemen abgelenkt wird, sondern jedes Linsensystem einen speziellen Bereich bzw. Anteil des von der Lichtquelle ausgesandten Lichts entsprechend der Ausgestaltung des jeweiligen Linsensystems ablenkt.The light from the light source is preferably refracted either by the lens system assigned to the light filter or by the lens system assigned to the cover plate. this has the advantage that part of the light is not deflected by both lens systems, but each lens system deflects a special area or portion of the light emitted by the light source in accordance with the design of the respective lens system.
Gemäß einer bevorzugten Ausführungsform liegen die Brennpunkte des dem Lichtfilter zugordneten Linsensystems im Bereich der Segmente mit geringerer Scheibendicke, insbesondere auf der Innen- oder Außenoberfläche der Abschlußscheibe. Hierdurch wird der Vorteil erzielt, daß die durch dieses Linsensystem abgelenkten Lichtbündel ausschließlich die Segmente mit geringerer Scheibendicke passieren, so daß die Lichtintensität nur unwesentlich verringert wird.According to a preferred embodiment, the focal points of the lens system assigned to the light filter lie in the region of the segments with a smaller pane thickness, in particular on the inside or outside surface of the cover pane. This has the advantage that the light beams deflected by this lens system only pass through the segments with a smaller pane thickness, so that the light intensity is only insignificantly reduced.
Gemäß einem weiteren Ausführungsbeispiel ist vorgesehen, daß die Brennpunkte des der Abschlußscheibe zugordneten Linsensystems in einem Abstand zur Außenoberfläche vergrößert wird, wird der Dickenunterschied innerhalb der Segmente mit größerer Scheibendicke verkleinert, wodurch eine Vergleichmäßigung der Farbintensität der gesamten Abschlußscheibe erzielt wird.According to a further exemplary embodiment, it is provided that the focal points of the lens system assigned to the lens are enlarged at a distance from the outer surface, the difference in thickness within the segments with greater lens thickness is reduced, as a result of which the color intensity of the entire lens is evened out.
Mit Vorzug ist der Abstand des Lichtfilters von der Innenfläche der Abschlußscheibe bei unterschiedlichen Signalfarben verschieden. Hierdurch kann der Anteil des Lichts, der die Segmente mit größerer Scheibendicke bzw. die Segmente mit kleinerer Scheibendicke passiert, gezielt gesteuert werden.The distance of the light filter from the inner surface of the cover lens is preferably different for different signal colors. In this way, the proportion of light that passes through the segments with a larger pane thickness or the segments with a smaller pane thickness can be controlled in a targeted manner.
Mit Vorteil ist die gewünschte Signal farbe durch eine Farbsubtraktion mit anschließender Farbaddition erzeugbar. Durch die Farbsubstraktion werden die Farbteile, die später durch die Farbaddition die gewünschte Signalfarbe ergeben, erzeugt. Durch die Farbaddition wird die Farbintensität erhöht.The desired signal color can advantageously be generated by color subtraction with subsequent color addition. The color subtraction creates the color parts that later result in the desired signal color due to the color addition. The color intensity is increased by the color addition.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung zwei besonders bevorzugte Ausführungsbeispiele im einzelnen dargestellt sind. Dabei zeigen:
- Figur 1 ein erstes Ausführungsbeispiel der erfindungsgemäßen Signalleuchte, z.B. für ein weißes Signallicht; und
Figur 2 ein weiteres Ausführungsbeispiel der erfindungsgemäßen Signalleuchte, z.B. für ein rotes Signallicht.
- Figure 1 shows a first embodiment of the signal light according to the invention, for example for a white signal light; and
- Figure 2 shows another embodiment of the signal light according to the invention, for example for a red signal light.
Bei dem in der Figur 1 wiedergebenen Ausführungsbeispiel treffen die von einer nicht gezeigten Lichtquelle kommenden Lichtstrahlen 1 bis 4, die durch geeignete optische Mittel in paralleler Richtung ausgerichtet sind, zuerst auf einen Lichtfilter 5 und anschließend auf eine Abdeckscheibe 6 und verlassen diese ins Freie. Die Ausgestaltung der übrigen Elemente der Signal leuchte sind nicht dargestellt und entsprechen der üblichen Ausgestaltung. Das aus der Signallleuchte austretende Licht weist eine Signalfarbe auf, die üblicherweise entweder weiß, gelb bzw. orangefarben, oder rot ist.In the exemplary embodiment shown in FIG. 1, the light beams 1 to 4 coming from a light source (not shown), which are aligned in a parallel direction by suitable optical means, first strike a light filter 5 and then a cover disk 6 and leave it outside. The design of the other elements of the signal light are not shown and correspond to the usual design. The light emerging from the signal lamp has a signal color which is usually either white, yellow or orange, or red.
Der Lichtfilter 5 weist Aussparungen 7 auf, in denen das Licht keine Farbveränderung erfährt. Die zwischen den Aussparungen 7 liegenden Bereiche 8 vermitteln dem diese Bereiche 8 passierenden Licht eine andere Farbe, indem sie einen bestimmten Wellenbereich ausfiltern. Ferner sind diese Bereiche 8 mit einer konvexen Oberfläche 9 versehen, durch die Linsen 10 gebildet werden. Diese Linsen 10 erzeugen insgesamt ein Linsensystem 11, welches dem Lichtfilter 5 zugordnet ist. Demnach werden die die Bereiche 8 durchquerenden Lichtbündel derart abgelenkt, daß sie auf den Brennpunkt 12 der Linsen 10 konvergieren. Die die Aussparungen 7 durchquerenden Lichtbündel werden nicht abgelenkt und behalten daher ihre Richtung bei.The light filter 5 has
Die Abdeckscheibe 6 ist in Segmente 13 und 14 unterteilt, wobei die Segmente 13 eine geringere Dicke d als die Segmente 14 aufweisen. Die Segmente 13 und 14 sind alternierend angeordnet. Außerdem sind die Segmente 14 an ihrer der Lichtquelle zugewandten Seite mit einer konvexen Oberfläche 15 ausgestaltet, durch die Linsen 16 eines Linsensystem 17 gebildet werden. Ferner weisen die Segmente 14 abgeschrägte Seitenwände 18 auf, wobei der Neigungswinkel der Seitenwand 18 im wesentlichen dem Neigungswinkel des Grenzstrahls 19 des das Segment 13 passierenden Lichtbündels entspricht. Ferner ist erkennbar, daß nicht nur die Dicke d des Segments 13 geringer ist als die Dicke D des Segments 14, sondern auch die Breite b des Segments 13 bezüglich der Breite B des Segments 14 kleiner ist.The cover disk 6 is divided into
Schließlich ist erkennbar, daß auf der Höhe eines Segments 13 jeweils ein Bereich 8 des Lichtfilters 5 liegt, so daß das diesen Bereich 8 passierende Lichtbündel ausschließlich das Segment 13 mit geringer Dicke d passiert. Das die Aussparung 7 passierende Lichtbündel durchquert dann ausschließlich das dahinter angeordnete Segment 14 und wird in diesem abgelenkt.Finally, it can be seen that an
Bei dem in der Figur 1 wiedergegebenen Ausführungsbeispiel durchquert nur ein kleiner Teil des von der Lichtquelle ausgesandten Lichts die Aussparungen 7 und erhält in den Segmenten 14 eine rote Farbe aufgrund der roten Einfärbung der gesamten Abdeckscheibe 5. Der Großteil des von der Lichtquelle ausgesandten Lichts durchquert die Bereiche 8 und somit einen Lichtfilter und anschließend die Segmente 13. Der Lichtfilter 5 ist dabei so ausgelegt, daß dem Licht nach dem Durchqueren der Bereiche 8 und der Segmente 13 eine Farbe vermittel wird, die durch Addition der Farbe des die Segmente 14 verlassenden Lichtbündel eine neutrale, d.h. eine weiße Farbe erhält. das Licht mit der weißen Farbe wird also durch Addition der Farbe der Lichtbündel der Segmente 14 und der Farbe der Lichtbündel der Segmente 13 erzielt. Da die Segmente 13 eine gegenüber den Segmenten 14 geringe Dicke d aufweisen, ist die Verringerung der Lichtintensität verhältnismäßig gering. Außerdem besitzt die Abdeckscheibe 6 aufgrund der geringen Breite b der Segmente 13 nach wie vor ein im Hinblick auf die Farbe einheitliches Erscheinungsbild, wobei jedoch aufgrund der intensiven Einfärbung der Abdeckscheibe 6 ein intensiv roter Farbeindruck vorherrscht.In the embodiment shown in FIG. 1, only a small part of that emitted by the light source passes through Light the
Bei dem in der Figur 2 gezeigten Ausführungsbeispiel ist der Abstand A zwischen dem Lichtfilter 5 und der Abdeckscheibe 6 gegenüber dem Ausführungsbeispiel der Figur 1 wesentlich geringer, so daß die den Farbfilter 5 aufweisenden Bereiche 8 ebenfalls eine geringere Breite aufweisen. Die Aussparungen 7 sind demnach größer ausgeführt. Hierdurch wird der Vorteil erzielt, daß die die Aussparungen 7 passierenden Lichtbündel größer sind und demnach mehr Licht durch die Segmente 14 geleitet wird. Das aus den Segmenten 14 austretende Licht weist eine intensiv rote Farbe auf. Demnach muß der Lichtfilter 5 so ausgebildet sein, daß die durch die Grenzstrahlen 2 und 3 gebildeten Lichtbündel, die durch die Bereiche 8 hindurchtreten und die Segmente 13 passieren, ebenfalls die intensive rote Farbe besitzen. Dies wird auf einfache Weise dadurch erreicht, daß der Lichtfilter 5 ein Rotfilter ist. Ist der Lichtfilter 5 ein Gelbfilter, dann kann dem durch die Grenzstrahlen 2 und 3 begrenzten Lichtbündel eine gelbe Farbe vermittelt werden, so daß durch Addition dieses Lichtbündels mit dem Lichtbündel, welches das Segment 14 passiert, eine orangene Farbe erzeugt wird. Die Addition dieser beiden Farben ist ab der Ebene E abgeschlossen und die Mischung homogen.In the exemplary embodiment shown in FIG. 2, the distance A between the light filter 5 and the cover plate 6 is significantly smaller than in the exemplary embodiment in FIG. 1, so that the
Zwischen dem Farbfilter 5 und der Abschlußscheibe 6 können eine oder mehrere weitere Optikscheiben zur Optimierung des homogenen Farbeindrucks angeordnet sein.One or more further optical disks for optimizing the homogeneous color impression can be arranged between the color filter 5 and the lens 6.
Claims (14)
- A signal lamp, in particular, for automotive vehicles, comprising a light source, a casing including a closure plate (6) of transparent colouring, preferably red, and comprising one or more light filters (5) provided between the light source and the closure plate (6), wherein the closure plate (6) is subdivided into segments (13 and 14) of varying plate thicknesses (d,D),
characterized in that the light filter (5) is provided with recesses (7). - A signal lamp as claimed in claim 1,
characterized in that the recesses (7) of the light filter (5) are provided within the path of rays ahead of the segments (14) having a high plate thickness (D). - A signal lamp as claimed in any one of the preceding claims, characterized in that the segments (13 and 14) of varying plate thicknesses have different widths (b,B), with especially segments (13) having low plate thicknesses (D) being designed narrower than the segments (14) having high plate thicknesses (D).
- A signal lamp as claimed in any one of the preceding claims, characterized in that at least one lens system (17) is provided between the light filter (5) and the closure plate (6).
- A signal lamp as claimed in claim 4,
characterized in that the lens system (17) is formed of lenses (16) arranged on the segments (14) of high plate thickness (D), with the lenses (16) and the segments (14) being preferably formed integrally. - A signal lamp as claimed in any one of the preceding claims, characterized in that a lens system (11) is provided between the light source and the light filter (5).
- A signal lamp as claimed in claim 6,
characterized in that the lens system (11) is formed of lenses (10) provided on the light filter (5), with the lenses (10) and the light filter (5) being preferably formed integrally. - A signal lamp as claimed in claim 6 or claim 7,
characterized in that the lens system (11) comprises recesses in an area of the recesses (7) of the light filter (5). - A signal lamp as claimed in any one of claims 4 to 8,
characterized in that the lens system (11 and 17, respectively) is formed of convex and/or concave lenses (10 and 16, respectively). - A signal lamp as claimed in any one of claims 4 to 9,
characterized in that the light of the light source is refracted either by the lens system (11) associated with the light filter (5) or by the lens system (17) associated with the closure plate (6). - A signal lamp as claimed in any one of claims 6 to 10,
characterized in that the focal points (12) of the lens system (11) associated with the light filter (5) are within the area of the segments (13) of low plate thickness (d), preferably on the inner or outer surface of the closure plate (6). - A signal lamp as claimed in any one of claims 4 to 11,
characterized in that the focal points of the lens system (17) associated with the closure plate (6) are in spaced relationship to an outer surface of the closure plate (6). - A signal lamp as claimed in any one of the preceding claims,
characterized in that the distance (A) of the light filter (5) from an inner surface of the closure plate (6) is different with varying signal colours. - A signal lamp as claimed in any one of the preceding claims,
characterized in that a desired signal colour can be generated by a colour subtraction and a subsequent colour addition.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4228928A DE4228928C1 (en) | 1992-08-31 | 1992-08-31 | Signal light |
| DE4228928 | 1992-08-31 | ||
| PCT/EP1993/002220 WO1994005949A1 (en) | 1992-08-31 | 1993-08-19 | Signal lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0658243A1 EP0658243A1 (en) | 1995-06-21 |
| EP0658243B1 true EP0658243B1 (en) | 1997-11-19 |
Family
ID=6466825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93919104A Expired - Lifetime EP0658243B1 (en) | 1992-08-31 | 1993-08-19 | Signal lamp |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5555492A (en) |
| EP (1) | EP0658243B1 (en) |
| JP (1) | JPH08500463A (en) |
| BR (1) | BR9306948A (en) |
| DE (2) | DE4228928C1 (en) |
| ES (1) | ES2109510T3 (en) |
| WO (1) | WO1994005949A1 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1268076B1 (en) * | 1994-06-22 | 1997-02-20 | Carello Spa | VEHICLE LIGHT. |
| DE4425401A1 (en) * | 1994-07-19 | 1996-02-01 | Teves Gmbh Alfred | Light emission optics for vehicle lights |
| ES2199333T3 (en) * | 1996-09-05 | 2004-02-16 | Valeo Vision | SIGNAL LIGHT TO PRODUCE COLOR LIGHT REQUIRED BY ADDITIVE SYNTHESIS. |
| FR2752914B1 (en) * | 1996-09-05 | 1998-11-20 | Valeo Vision | ADDITIVE SYNTHESIS SIGNAL LIGHT |
| US5798849A (en) * | 1996-11-05 | 1998-08-25 | Mustek Systems Inc. | Multilevel light source device |
| FR2763385B1 (en) * | 1997-05-15 | 1999-08-06 | Valeo Vision | SIGNAL LIGHT FOR MOTOR VEHICLE WITH ADDITIVE SYNTHESIS |
| FR2763384B1 (en) * | 1997-05-15 | 1999-08-06 | Valeo Vision | SIGNAL LIGHT FOR MOTOR VEHICLE WITH SUBTRACTO-ADDITIVE SYNTHESIS |
| DE19753762A1 (en) * | 1997-12-04 | 1999-06-10 | Itt Mfg Enterprises Inc | Combination rear signal lamp for automobile |
| DE19812656A1 (en) * | 1998-03-23 | 1999-09-30 | Volkswagen Ag | Colored lamp for use as automobile trafficator or brake lamp |
| DE10124539B4 (en) * | 2001-05-19 | 2009-07-23 | Odelo Gmbh | Tail light for vehicles, especially for motor vehicles |
| US7918582B2 (en) * | 2005-12-30 | 2011-04-05 | Dialight Corporation | Signal light using phosphor coated LEDs |
| US7777322B2 (en) * | 2005-12-30 | 2010-08-17 | Dialight Corporation | Apparatus for providing a light source that combines different color LEDS |
| CN101435549B (en) * | 2007-11-13 | 2010-12-01 | 建兴电子科技股份有限公司 | Lighting shape and lighting area-adjustable illuminating system |
| US10901125B2 (en) | 2014-05-23 | 2021-01-26 | Eyesafe, Llc | Light emission reducing compounds for electronic devices |
| US10642087B2 (en) | 2014-05-23 | 2020-05-05 | Eyesafe, Llc | Light emission reducing compounds for electronic devices |
| USD749588S1 (en) * | 2014-08-22 | 2016-02-16 | Nilesh Narendra Jambhulkar | Docking station with screen |
| US11592701B2 (en) | 2018-11-28 | 2023-02-28 | Eyesafe Inc. | Backlight unit with emission modification |
| US10955697B2 (en) | 2018-11-28 | 2021-03-23 | Eyesafe Inc. | Light emission modification |
| US11810532B2 (en) | 2018-11-28 | 2023-11-07 | Eyesafe Inc. | Systems for monitoring and regulating harmful blue light exposure from digital devices |
| US11126033B2 (en) | 2018-11-28 | 2021-09-21 | Eyesafe Inc. | Backlight unit with emission modification |
| US10971660B2 (en) | 2019-08-09 | 2021-04-06 | Eyesafe Inc. | White LED light source and method of making same |
| US11421848B2 (en) | 2020-02-10 | 2022-08-23 | Flex-N-Gate Advanced Product Development, Llc | System providing functional lighting through an opaque finish |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0074727A1 (en) * | 1981-08-29 | 1983-03-23 | Britax Vega Limited | Vehicle lamp assembly |
| FR2530781A1 (en) * | 1982-07-23 | 1984-01-27 | Cibie Projecteurs | Vehicle signal lamp |
| GB8327529D0 (en) * | 1983-10-14 | 1983-11-16 | Lucas Ind Plc | Indiscernible lamp |
| FR2572495B1 (en) * | 1984-10-26 | 1986-12-26 | Signal Vision Sa | LIGHTING AND SIGNALING DEVICE, PARTICULARLY FOR MOTOR VEHICLES |
| FR2585448B1 (en) * | 1985-07-24 | 1989-06-02 | Cibie Projecteurs | LIGHTS, MULTIPURPOSE OF TONE OR OF UNIFORM APPEARANCE IN THE OFF CONDITION, IN PARTICULAR FOR MOTOR VEHICLES |
| DE3636383A1 (en) * | 1986-10-25 | 1988-04-28 | Swf Auto Electric Gmbh | SIGNAL LIGHT, ESPECIALLY FOR MOTOR VEHICLES |
| EP0281719A1 (en) * | 1987-03-11 | 1988-09-14 | Senalizacion Y Accesorios Del Automovil Yorka, S.A. | Improvements in luminous focuses for automobiles |
-
1992
- 1992-08-31 DE DE4228928A patent/DE4228928C1/en not_active Expired - Fee Related
-
1993
- 1993-08-19 BR BR9306948A patent/BR9306948A/en not_active IP Right Cessation
- 1993-08-19 JP JP6505625A patent/JPH08500463A/en active Pending
- 1993-08-19 US US08/392,834 patent/US5555492A/en not_active Expired - Lifetime
- 1993-08-19 EP EP93919104A patent/EP0658243B1/en not_active Expired - Lifetime
- 1993-08-19 ES ES93919104T patent/ES2109510T3/en not_active Expired - Lifetime
- 1993-08-19 WO PCT/EP1993/002220 patent/WO1994005949A1/en active IP Right Grant
- 1993-08-19 DE DE59307715T patent/DE59307715D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59307715D1 (en) | 1998-01-02 |
| DE4228928C1 (en) | 1993-12-16 |
| ES2109510T3 (en) | 1998-01-16 |
| US5555492A (en) | 1996-09-10 |
| EP0658243A1 (en) | 1995-06-21 |
| JPH08500463A (en) | 1996-01-16 |
| BR9306948A (en) | 1999-04-06 |
| WO1994005949A1 (en) | 1994-03-17 |
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