EP2822834A2 - Light signal - Google Patents

Light signal

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Publication number
EP2822834A2
EP2822834A2 EP13716750.8A EP13716750A EP2822834A2 EP 2822834 A2 EP2822834 A2 EP 2822834A2 EP 13716750 A EP13716750 A EP 13716750A EP 2822834 A2 EP2822834 A2 EP 2822834A2
Authority
EP
European Patent Office
Prior art keywords
light
light signal
signal according
signal
laser
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.)
Granted
Application number
EP13716750.8A
Other languages
German (de)
French (fr)
Other versions
EP2822834B1 (en
Inventor
Christian Lawnik
Jörg BIRKHOLZ
Rolf Eckl
Uwe Frost
Zeljko Marincic
Matthias Szkudlarek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2822834A2 publication Critical patent/EP2822834A2/en
Application granted granted Critical
Publication of EP2822834B1 publication Critical patent/EP2822834B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • B61L5/1809—Daylight signals
    • B61L5/1845—Optical systems, lenses

Definitions

  • the invention relates to a light signal, in particular for rail-bound traffic routes, having a light source and an optical system for visualizing symbols and / or signal terms in a far-end area and a proximity area angled relative thereto.
  • the aim is to obtain the axis luminosity for the long - range representation as possible without great losses in terms of light intensity.
  • the amount of light which is coupled out by optical means to the side and into the vicinity of the light signal must be radiated as completely as possible into the relevant region, since this amount of light is no longer available for the long-range representation.
  • AI light signals are known in which special angled or corresponding bendable LEDs or groups of LEDs are provided for the illumination of the vicinity. Also in use, for example in the DE
  • the invention has for its object to provide a light signal of the generic type, in which the above
  • the object is achieved in that the light source has a stimulable by laser light diffuser for converting the coherent laser light in incoherent scattered light.
  • the lens serves as the actual light source, while the laser light is provided only for their excitation. This ensures that no high-energy, coherent laser radiation can be emitted into the environment. Due to the lens, the laser light is also expanded such that a homogeneous distribution of the resulting scattered light over a certain cross-section is achieved.
  • the lens is formed as a phosphorus-active lens.
  • the phosphorus-active diffuser converts the highly concentrated coherent laser light into incoherent scattered light, which may have additional opacity. shaped, bundled and used for radiation.
  • the phosphorus-active diffusing screen may be designed such that the emitted light already has the desired monochrome color, so that separate colored filter attachments are dispensable.
  • the, in particular phosphorus-active, lens according to claim 3 has a shape for distance and near-field representation.
  • the emission characteristic is definable, so that different emission profiles, in particular a sufficient illumination of the near area, can be realized.
  • the diffuser according to claim 4 is connected on the light output side via optical fibers to a display panel for the visualization of symbols.
  • the optical fiber ends are arranged symbol specific to matrix slots of the scoreboard.
  • the diffusing screen and / or the optical system has means for decoupling a small proportion of light, which is supplied to a monitoring and / or control device.
  • the coupled-out light can be fed to a brightness sensor whose output signal can be used to set a specific light intensity of the light signal.
  • the adjustment or readjustment of the light intensity can act directly on the setting parameters of the laser light connected upstream of the lens.
  • the laser light is generated by at least one laser diode.
  • Laser diodes are significantly smaller than LEDs and produce virtually no heat. The overall dimensions of the light signal can thus be significantly reduced. The invention will be explained in more detail with reference to figurative representations.
  • FIG. 1 shows a schematic representation of a light signal for the visualization of signal terms and
  • Figure 2 is a schematic representation of a light signal for visualization of symbols.
  • FIG. 1 illustrates a light signal in which a light source 1 and an optical system 2 for horizontal light radiation are provided for the purpose of long-range imaging 3 and oblique radiation for the purpose of short-range imaging 4.
  • the light source 1 consists of at least one laser diode 5 and a phosphorescent lens 6, through which the high-energy, coherent laser light is converted into incoherent scattered light.
  • the phosphorus-active lens 6 also provides for the expansion of the laser light, so that a light spot is formed which is comparable to that of a conventional LED light source.
  • the phosphorus-active diffusing screen 6 and / or the optical system 2 is designed in such a way that, in addition to the distance and near-field depictions 3 and 4, a small amount of light is coupled out and fed to a monitoring and / or control device 7a or 7b.
  • the light source 1 with the laser diode 5 and the phosphorus-active diffusing screen 6 serves to illuminate a display panel 8 on which various symbols-here the symbol 4-can be represented.
  • the optical system 2 is formed by a bundle of light guides 9, which illuminate the symbol corresponding pixels on the display panel 8.
  • the laser-based light source 1 is distinguished from conventional light sources in particular by considerably improved energy efficiency and lower phantom power.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention relates to a light signal, more particularly for rail-based traffic routes, comprising a light source (1) and an optical system (2) for the visualization of symbols and/or signal aspects into a far range and a near range (4) angled relative thereto. In order to improve the energy efficiency, provision is made for the light source (1) to have a diffusing plate that can be excited by laser light and serves for converting the coherent laser light into incoherent scattered light.

Description

Beschreibung / Description Lichtsignal Die Erfindung betrifft ein Lichtsignal, insbesondere für schienengebundene Verkehrswege, mit einer Lichtquelle und einem optischen System zur Visualisierung von Symbolen und/oder Signalbegriffen in einen Fernbereich und einen gegenüber diesem abgewinkelten Nahbereich. The invention relates to a light signal, in particular for rail-bound traffic routes, having a light source and an optical system for visualizing symbols and / or signal terms in a far-end area and a proximity area angled relative thereto.
Prinzipiell dienen Lichtsignale als Signalgeber oder Symbolanzeiger, die durch Färb- und/oder Formgebung einer Leucht- fläche, das heißt durch die Abstrahlcharakteristik, bestimmte Informationen vermitteln. Dabei handelt es sich häufig um si- cherheitsrelevante Informationen, die keinesfalls optisch verfälscht oder durch Fremdlicht überblendet sein dürfen. Das unerwünschte Aufleuchten beziehungsweise Verfälschen eines Lichtpunktes durch Einfall von Umgebungslicht , zum Beispiel Sonnenstrahlung oder Scheinwerferlicht, wird als Phantomef- fekt bezeichnet. Durch den Phantomeffekt kann es in Extremfällen zu einer falschen Anzeige infolge eines unzeitigen Aufleuchtens eines Lichtpunktes oder einer Farbverschiebung kommen . Die nachstehenden Erläuterungen beziehen sich im Wesentlichen auf Lichtsignale zur Darstellung von Signalbegriffen und Symbolen bei schienengebundenen Verkehrswegen, ohne dass der beanspruchte Gegenstand auf diese Anwendung beschränkt sein soll . In principle, light signals serve as signal transmitters or symbol indicators, which convey certain information by coloring and / or shaping a luminous area, that is to say by the emission characteristic. These are often safety-related information that must by no means be falsified visually or blended by extraneous light. The unwanted illumination or falsification of a light spot by the incidence of ambient light, for example solar radiation or headlight light, is referred to as a phantom effect. In extreme cases, the phantom effect can lead to a false display due to an inadvertent illumination of a light spot or a color shift. The following explanations relate essentially to light signals for the representation of signal terms and symbols in rail-bound traffic routes, without the claimed subject-matter being restricted to this application.
Bei Eisenbahnsignalen muss gewährleistet sein, dass der Triebfahrzeugführer bei Annäherung an das für ihn bestimmte Signal dieses immer eindeutig erkennen kann. Dabei müssen unterschiedliche Streckengeometrien, das heißt gerade Strecken, Kurven und/oder Höhenunterschiede, berücksichtigt werden. Neben der Fernbereichsdarstellung ist auch eine Nahbereichsdarstellung des Signals erforderlich, damit der Triebfahrzeugführer das Lichtsignal auch dann erkennen kann, wenn er di- rekt vor dem Signal steht. Gute Fernsicht soll durch eine definierte Lichtstärke in Richtung der optischen Achse häufig bis zu einer Entfernung von 500 m vom Signal realisiert werden. Der Nahsichtbereich liegt in der Regel 10 m bis 20 m vor dem Signal, mit der Tendenz, noch kleinere Beobachtungsab- stände zu ermöglichen. Dabei wird angestrebt, die Achslicht - stärke für die Fernbereichsdarstellung möglichst ohne große Einbußen hinsichtlich der Lichtstärke zu erhalten. Die Lichtmenge, die mit optischen Mitteln zur Seite und in den Nahbe- reich des Lichtsignals ausgekoppelt wird, muss möglichst vollständig in den relevanten Bereich abgestrahlt werden, da diese Lichtmenge der Fernbereichsdarstellung nicht mehr zur Verfügung steht . Aus der EP 0 694 895 A2 und der DE 198 15 868 AI sind Lichtsignale bekannt, bei denen für die Ausleuchtung des Nahbereiches spezielle abgewinkelte oder entsprechend abwinkelbare LEDs oder Gruppen von LEDs vorgesehen sind. Gebräuchlich sind auch, beispielsweise in der DE In the case of railway signals, it must be ensured that the driver can always recognize this clearly when approaching the signal intended for him. In this case, different route geometries, that is to say even routes, curves and / or height differences, must be taken into account. In addition to the long-range representation, a close-range representation of the signal is required so that the driver can recognize the light signal even if he / she is right in front of the signal. Good visibility is to be realized by a defined light intensity in the direction of the optical axis often up to a distance of 500 m from the signal. The near-vision range is usually 10 to 20 m in front of the signal, with the tendency to allow even smaller observation distances. The aim is to obtain the axis luminosity for the long - range representation as possible without great losses in terms of light intensity. The amount of light which is coupled out by optical means to the side and into the vicinity of the light signal must be radiated as completely as possible into the relevant region, since this amount of light is no longer available for the long-range representation. From EP 0 694 895 A2 and DE 198 15 868 AI light signals are known in which special angled or corresponding bendable LEDs or groups of LEDs are provided for the illumination of the vicinity. Also in use, for example in the DE
20 2004 008 937 Ul beschriebene, grau eingefärbte Abschlussgläser, die ein Streusegment für die Signalbegriffsvisualisierung in den Nahbereich aufweisen, wobei die Graufärbung oder ein separates Graufilter dem Phantomeffekt entgegen- wirkt. Nachteilig ist vor allem, dass durch die Eingrauung die Lichtstärke um ca. 80 %, das heißt auf ca. 20 % Restlichtstärke, reduziert wird. Infolgedessen ist eine Lichtquelle mit einer entsprechend hohen Lichtstärke erforderlich. Dadurch wird die Wärmeentwicklung erhöht und letztlich die Lebensdauer der Lichtquelle reduziert. Insbesondere bei mehrfarbigen Lichtsignalen ist dann die Lichtstärke eventuell nicht mehr ausreichend. Das wiederum erhöht die Kosten, da für unterschiedliche Anforderungen, insbesondere bezüglich der Lichtstärke, verschiedene Varianten für das optische Sys- tem und für die geeignete Lichtquelle realisiert werden müssen. Auch Signalgeber der neuesten Generation, die als Lichtquelle Hochstrom-LEDs verwenden, nutzen das Prinzip der Streuscheibe. Nachteilig ist darüber hinaus der erhebliche Bedarf an elektrischer Leistung, um eine vorgegebene Mindestlichtstärke zu erzeugen. 20 2004 008 937 Ul described, gray-colored cover glasses, which have a stray segment for signal visualization in the near range, whereby the gray color or a separate gray filter counteracts the phantom effect. The disadvantage is, above all, that the light intensity is reduced by approximately 80%, that is to approximately 20% residual light intensity, by the incorporation. As a result, a light source with a correspondingly high light intensity is required. This increases the heat development and ultimately reduces the life of the light source. Especially with multi-colored light signals then the light intensity may not be sufficient. This in turn increases the costs since, for different requirements, in particular with regard to the light intensity, different variants for the optical system and for the suitable light source must be realized. Even the latest generation of signal generators that use high-current LEDs as their source of light use the principle of the diffuser. Another disadvantage is the considerable Need for electrical power to produce a given minimum light level.
Der Erfindung liegt die Aufgabe zugrunde, ein Lichtsignal der gattungsgemäßen Art anzugeben, bei dem die oben genanntenThe invention has for its object to provide a light signal of the generic type, in which the above
Nachteile weitgehend vermieden sind, wobei insbesondere eine höhere Lichtstärke bei Verminderung der dazu erforderlichen elektrischen Leistung angestrebt wird. Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass die Lichtquelle eine von Laserlicht anregbare Streuscheibe zur Umwandlung des kohärenten Laserlichts in inkohärentes Streulicht aufweist. Auf diese Weise dient die Streuscheibe als eigentliche Lichtquelle, während das Laserlicht lediglich zu deren Anregung vorgesehen ist. Damit ist sichergestellt, dass keine hochenergetische, kohärente Laserstrahlung in die Umwelt emittiert werden kann. Durch die Streuscheibe wird das Laserlicht außerdem derart aufgeweitet, dass eine homogene Verteilung des resultierenden Streulichtes über einen bestimmten Querschnitt erreicht wird. Selbst wenn durch Absorption und Streuung ein Teil der Intensität des Laserlichtes nicht für die eigentliche Lichtquelle zur Verfügung steht, ist der Energieverbrauch im Vergleich zu einer LED-Anordnung gleicher Lichtintensität erheblich geringer, da Laserlicht pro Watt eine erheblich höhere Lichtintensität erzeugt als LEDs. Verschiedene Farben, die bestimmten Signalbegriffen entsprechen, können durch farbige Filtervorsätze realisiert werden, sofern die durch das Laserlicht anregbare Streuscheibe inkohärentes weißes Streulicht erzeugt. Darüber hinaus ist bei der durch Laserlicht angeregten Lichtquelle der oben geschilderte Phantomeffekt deutlich reduziert. Gemäß Anspruch 2 ist die Streuscheibe als phosphoraktive Streuscheibe ausgebildet. Die phosphoraktive Streuscheibe wandelt das stark gebündelte kohärente Laserlicht in inkohärentes Streulicht um, welches gegebenenfalls über weitere Op- tiken geformt, gebündelt und zur Abstrahlung genutzt werden kann. Die phosphoraktive Streuscheibe kann derart ausgebildet sein, dass das emittierte Licht bereits die gewünschte monochrome Farbe aufweist, so dass separate farbige Filtervorsät- ze entbehrlich sind. Disadvantages are largely avoided, in particular, a higher light intensity is aimed at reducing the required electrical power. According to the invention the object is achieved in that the light source has a stimulable by laser light diffuser for converting the coherent laser light in incoherent scattered light. In this way, the lens serves as the actual light source, while the laser light is provided only for their excitation. This ensures that no high-energy, coherent laser radiation can be emitted into the environment. Due to the lens, the laser light is also expanded such that a homogeneous distribution of the resulting scattered light over a certain cross-section is achieved. Even if a part of the intensity of the laser light is not available for the actual light source due to absorption and scattering, the energy consumption is considerably lower compared to an LED arrangement of the same light intensity since laser light per watt produces a considerably higher light intensity than LEDs. Different colors, which correspond to certain signal terms, can be realized by means of colored filter attachments, as long as the scattering disk which can be excited by the laser light generates incoherent white scattered light. Moreover, in the light source excited by the laser light, the above-described phantom effect is remarkably reduced. According to claim 2, the lens is formed as a phosphorus-active lens. The phosphorus-active diffuser converts the highly concentrated coherent laser light into incoherent scattered light, which may have additional opacity. shaped, bundled and used for radiation. The phosphorus-active diffusing screen may be designed such that the emitted light already has the desired monochrome color, so that separate colored filter attachments are dispensable.
Vorzugsweise weist die, insbesondere phosphoraktive, Streuscheibe gemäß Anspruch 3 eine Formgebung zur Fern- und Nahbereichsdarstellung auf. Durch unterschiedliche Formgebung ist die Abstrahlcharakteristik definierbar, so dass unterschiedliche Abstrahlprofile, insbesondere eine ausreichende Ausleuchtung des Nahbereichs, realisierbar sind. Preferably, the, in particular phosphorus-active, lens according to claim 3 has a shape for distance and near-field representation. By different shaping the emission characteristic is definable, so that different emission profiles, in particular a sufficient illumination of the near area, can be realized.
Zusätzlich oder alternativ ist die Streuscheibe gemäß An- spruch 4 lichtausgangsseitig über Lichtleiter mit einer Anzeigetafel zur Visualisierung von Symbolen verbunden. Die Lichtleiterenden werden dazu symbolspezifisch auf Matrixsteckplätzen der Anzeigetafel angeordnet. Bei einer besonders vorteilhaften, in Anspruch 5 charakterisierten Ausführungsform ist vorgesehen, dass die Streuscheibe und/oder das optische System Mittel zur Auskopplung eines geringen Lichtanteils, der einer Überwachungs - und/oder Steuereinrichtung zugeführt ist, aufweist. Beispielsweise kann das ausgekoppelte Licht einem Helligkeitssensor zugeführt sein, dessen Ausgangssignal zur Einstellung einer bestimmten Lichtintensität des Lichtsignals verwendet werden kann. Die Einstellung oder Nachregelung der Lichtintensität kann direkt auf die Einstellparameter des der Streuscheibe vorgeschalte- ten Laserlichtes einwirken. Insbesondere eine Anpassung anAdditionally or alternatively, the diffuser according to claim 4 is connected on the light output side via optical fibers to a display panel for the visualization of symbols. The optical fiber ends are arranged symbol specific to matrix slots of the scoreboard. In a particularly advantageous embodiment characterized in claim 5, it is provided that the diffusing screen and / or the optical system has means for decoupling a small proportion of light, which is supplied to a monitoring and / or control device. For example, the coupled-out light can be fed to a brightness sensor whose output signal can be used to set a specific light intensity of the light signal. The adjustment or readjustment of the light intensity can act directly on the setting parameters of the laser light connected upstream of the lens. In particular, an adaptation to
Tag- und Nachtbedingungen oder auch unterschiedlichen Witterungsverhältnissen ist auf diese Weise einfach realisierbar. Day and night conditions or even different weather conditions can be easily achieved in this way.
Gemäß Anspruch 6 ist vorgesehen, dass das Laserlicht von min- destens einer Laserdiode erzeugt wird. Laserdioden sind erheblich kleiner als LEDs und erzeugen quasi keine Wärme. Die Gesamtabmessungen des Lichtsignals können somit erheblich verringert werden. Die Erfindung wird nachfolgend anhand figürlicher Darstellungen näher erläutert. Es zeigen: Figur 1 eine schematische Darstellung eines Lichtsignals zur Visualisierung von Signalbegriffen und According to claim 6 it is provided that the laser light is generated by at least one laser diode. Laser diodes are significantly smaller than LEDs and produce virtually no heat. The overall dimensions of the light signal can thus be significantly reduced. The invention will be explained in more detail with reference to figurative representations. FIG. 1 shows a schematic representation of a light signal for the visualization of signal terms and
Figur 2 eine schematische Darstellung eines Lichtsignals zur Visualisierung von Symbolen. Figure 2 is a schematic representation of a light signal for visualization of symbols.
Figur 1 veranschaulicht ein Lichtsignal, bei dem eine Lichtquelle 1 und ein optisches System 2 zur horizontalen Lichtab- strahlung zwecks Fernbereichsdarstellung 3 und zur Schrägab- strahlung zwecks Nahbereichsdarstellung 4 vorgesehen ist. Die Lichtquelle 1 besteht dabei aus mindestens einer Laserdiode 5 und einer phosporaktiven Streuscheibe 6, durch welche das hochenergetische, kohärente Laserlicht in inkohärentes Streulicht umgewandelt wird. Die phosphoraktive Streuscheibe 6 sorgt dabei auch für die Aufweitung des Laserlichts, so dass ein Lichtfleck entsteht, der mit dem einer herkömmlichen LED- Lichtquelle vergleichbar ist. Außerdem ist die phosphoraktive Streuscheibe 6 und/oder das optische System 2 derart ausgebildet, dass neben der Fern- und Nahbereichsdarstellung 3 und 4 eine geringe Lichtmenge ausgekoppelt und einer Überwa- chungs- und/oder Steuereinrichtung 7a bzw. 7b zugeführt wird. FIG. 1 illustrates a light signal in which a light source 1 and an optical system 2 for horizontal light radiation are provided for the purpose of long-range imaging 3 and oblique radiation for the purpose of short-range imaging 4. The light source 1 consists of at least one laser diode 5 and a phosphorescent lens 6, through which the high-energy, coherent laser light is converted into incoherent scattered light. The phosphorus-active lens 6 also provides for the expansion of the laser light, so that a light spot is formed which is comparable to that of a conventional LED light source. In addition, the phosphorus-active diffusing screen 6 and / or the optical system 2 is designed in such a way that, in addition to the distance and near-field depictions 3 and 4, a small amount of light is coupled out and fed to a monitoring and / or control device 7a or 7b.
Bei dem in Figur 2 dargestellten Lichtsignal dient die Lichtquelle 1 mit der Laserdiode 5 und der phosphoraktiven Streuscheibe 6 zur Ausleuchtung einer Anzeigetafel 8, auf der ver- schiedene Symbole - hier das Symbol 4 - darstellbar sind. Dabei ist das optische System 2 durch ein Bündel von Lichtleitern 9 gebildet, welche dem Symbol entsprechende Pixel auf der Anzeigetafel 8 ausleuchten. Die laserbasierte Lichtquelle 1 zeichnet sich gegenüber herkömmlichen Lichtquellen insbesondere durch erheblich verbesserte Energieeffizienz und geringere Phantomanfälligkeit aus. In the light signal shown in FIG. 2, the light source 1 with the laser diode 5 and the phosphorus-active diffusing screen 6 serves to illuminate a display panel 8 on which various symbols-here the symbol 4-can be represented. In this case, the optical system 2 is formed by a bundle of light guides 9, which illuminate the symbol corresponding pixels on the display panel 8. The laser-based light source 1 is distinguished from conventional light sources in particular by considerably improved energy efficiency and lower phantom power.

Claims

Patentansprüche / Patent Claims Claims / Patent Claims
1. Lichtsignal, insbesondere für schienengebundene Verkehrswege, mit einer Lichtquelle (1) und einem optischen System (2) zur Visualisierung von Symbolen und/oder Signalbegriffen in einen Fernbereich und einen gegenüber diesem abgewinkelten Nahbereich, 1. Light signal, in particular for rail-bound traffic routes, comprising a light source (1) and an optical system (2) for visualizing symbols and / or signal terms in a far-end area and a short range angled relative thereto,
d a d u r c h g e k e n n z e i c h n e t , dass d a d u r c h e c e n c i n e s that
die Lichtquelle (1) eine von Laserlicht anregbare Streuschei- be zur Umwandlung des kohärenten Laserlichts in inkohärentes Streulicht aufweist. the light source (1) has a dispersing lens which can be excited by laser light for the purpose of converting the coherent laser light into incoherent scattered light.
2. Lichtsignal nach Anspruch 1, 2. Light signal according to claim 1,
d a d u r c h g e k e n n z e i c h n e t , dass d a d u r c h e c e n c i n e s that
die Streuscheibe als phosphoraktive Streuscheibe (6) ausgebildet ist. the diffuser is designed as a phosphorus-active diffusing screen (6).
3. Lichtsignal nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 3. A light signal according to one of the preceding claims, characterized in that a
die Streuscheibe eine Formgebung zur Fern- und Nahbereichs - darstellung (3 und 4) aufweist. the diffuser has a shape for remote and close-range representation (3 and 4).
4. Lichtsignal nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 4. A light signal according to one of the preceding claims, characterized in that a
die Streuscheibe lichtausgangsseitig über Lichtleiter (9) mit einer Anzeigetafel (8) zur Visualisierung von Symbolen verbunden ist. the diffuser is connected on the light output side via optical fibers (9) to a display panel (8) for the visualization of symbols.
5. Lichtsignal nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 5. A light signal according to one of the preceding claims, characterized in that a
die Streuscheibe und/oder das optische System (2) Mittel zur Auskopplung eines geringen Lichtanteil, der einer Überwa- chungs- und/oder Steuereinrichtung (7a und/oder 7b) zugeführt ist, aufweist. the diffusing screen and / or the optical system (2) has means for decoupling a small proportion of light, which is fed to a monitoring and / or control device (7a and / or 7b).
6. Lichtsignal nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass das Laserlicht von mindestens einer Laserdiode (5) erzeugt wird . 6. Light signal according to one of the preceding claims, characterized in that the laser light is generated by at least one laser diode (5).
EP13716750.8A 2012-04-23 2013-04-02 Light signal Not-in-force EP2822834B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210206614 DE102012206614A1 (en) 2012-04-23 2012-04-23 light signal
PCT/EP2013/056902 WO2013160072A2 (en) 2012-04-23 2013-04-02 Light signal

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EP2822834A2 true EP2822834A2 (en) 2015-01-14
EP2822834B1 EP2822834B1 (en) 2016-03-02

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WO (1) WO2013160072A2 (en)

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WO2013160072A3 (en) 2014-04-10
EP2822834B1 (en) 2016-03-02
DE102012206614A1 (en) 2013-10-24
WO2013160072A2 (en) 2013-10-31

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