EP1104540B1 - Ignition element with a laser light source - Google Patents

Ignition element with a laser light source Download PDF

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Publication number
EP1104540B1
EP1104540B1 EP99944343A EP99944343A EP1104540B1 EP 1104540 B1 EP1104540 B1 EP 1104540B1 EP 99944343 A EP99944343 A EP 99944343A EP 99944343 A EP99944343 A EP 99944343A EP 1104540 B1 EP1104540 B1 EP 1104540B1
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EP
European Patent Office
Prior art keywords
laser light
laser
explosive
ignition
ignition element
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Expired - Lifetime
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EP99944343A
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German (de)
French (fr)
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EP1104540A1 (en
Inventor
Heinz Kern
Gerhard Kordel
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Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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Publication of EP1104540A1 publication Critical patent/EP1104540A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/113—Initiators therefor activated by optical means, e.g. laser, flashlight

Definitions

  • the invention relates to an ignition element with a laser light source according to the Preamble of the first claim.
  • Ignition elements are known in which the one which triggers the initial ignition Explosive is ignited by means of a laser light source.
  • the laser light source is placed outside the room containing the explosive.
  • the laser light will either through an optical fiber or through a through-channel to the explosive fed to the initial spark.
  • laser optics is usually required to get the laser light in to focus on the explosive at the intensity required for ignition.
  • the Explosion of the initial detonator ignites the charge of a detonation body, for example a floor.
  • the detonation body can also be a Contain a charge with an explosive, for the ignition of which the energy of the Laser light is sufficient so that no initial ignition is required.
  • the laser light is transmitted from the Laser light source supplied to the explosive of the ignition element. It is between coupling optics to the light guide and the explosive of the ignition element connected.
  • the laser light source is like this arranged that the laser light through an opening in a sign that the Separates the laser light source from the explosive of the ignition element, and one on it subsequent insulated pipe containing the filter and amplifier optics onto the Explosive of the ignition element is conducted.
  • the known ignition elements have the disadvantage that the light guide with its coupling optics or the Laser and light source filter and amplifier optics complex are.
  • the transmission of laser light by means of optical Equipment or fiber optic transmission and coupling losses.
  • An ignition element for an airbag is known from US Pat. No. 5,660,413.
  • the Explosive is from the laser diode through a gap and an attached to it subsequent biconcave glass seal separated.
  • DE 38 38 896 A1 describes a storage layer known laser-initiable ignition / ignition element. It has a window through which the Laser light can reach the explosive. The window is with one light-absorbing storage layer occupied by which the laser pulses in temporally stretched heat pulses are converted.
  • the object of the present invention is an ignition element with a laser light source to introduce, which is easier and cheaper to manufacture and the above mentioned Does not have disadvantages.
  • the Laser light source is a laser diode that is only for single use is determined.
  • the explosive to be ignited can be directly on the for the Laser light permeable part of the housing of the laser diode, the exit surface of the Laser lights, lie on.
  • the manufacture of ignition elements is simplified and cheaper itself, as there is no coupling of the laser light through optics or a light guide is required. In addition, transmission and coupling losses are avoided.
  • the explosive to be ignited facing part of the housing of the laser diode which is permeable to the laser light be occupied by a substance that the absorption of laser light, especially the Infrared portion, improved. This increases the effect of the laser light.
  • Carbon or black metal oxides, such as copper, iron and Manganese oxides absorb infrared light particularly well.
  • the absorption of the Materials that improve laser light are added to the explosive to be ignited his.
  • the prerequisite is that the intended effect of the Explosive is not affected.
  • the admixture makes it unnecessary separate operation to cover the laser diode with the absorbent.
  • the laser diode can be embedded in the explosive to be ignited, it is expedient if their electrical connections are exposed. At a embedded laser diode is used to initiate the energy required for ignition a larger surface area is available.
  • the explosive and the laser diode be surrounded by a common housing. This allows especially with initial fuses, the explosive and the laser diode as Ignition device summarized in a one-piece component of small dimensions become.
  • Versions in which the explosive and the laser diode in one Housings are summarized are particularly suitable for gas generators, such as they are used, for example, in airbags or belt tensioners.
  • FIG. 1 shows an ignition element 1 in a detonation body 2 as a sectional view.
  • the Ignition element 1 in the present exemplary embodiment consists of a laser diode 3, which together with the explosive 4 triggering the initial ignition in one common housing 5 is housed.
  • This ignition element 1 is in the Housing 6 of the detonation body 2 is used and extends into its explosive or Powder charge 7.
  • the connections 9 protrude from the housing 8 of the laser diode 3 Power supply to the control chip 10 of the laser diode 3.
  • the housing 12 of the laser diode 3 is transparent to the laser light 13.
  • the one Explosive 4 for the initial ignition part of the laser light 13 permeable housing part 12 forms a window 14 in the common housing 5 of laser diode 3 and explosive 4.
  • the laser light 13 occurs at a certain angle in the Rule between 20 ° and 30 ° from which the laser 11 strikes the explosive 4 and ignite him.
  • the energy density of the laser light 13 is dependent on the type of Laser diode 3 and thus its output power, from the exit angle of the laser light 13 and the distance between the laser 11 and the explosive 4.
  • the ignition behavior of the cargo can be significantly improved if the window 14 of the laser diode 3 is coated with a substance 15, which absorbs the laser light 13, especially the infrared portion, improved.
  • FIG 2 shows another embodiment of the invention.
  • the embodiment of the laser diode does not differ in its construction from that Laser diode in the embodiment of Figure 1. For this reason matching components designated with the same reference numerals.
  • the ignition element 101 in the present exemplary embodiment consists of the Laser diode 3 directly in the explosive charge 107 of the detonation body 102 is inserted and by him, except for the electrical connections 9, completely is surrounded.
  • the charge 107 does not require any in the present exemplary embodiment Initial spark.
  • the energy by the laser light 13 from the laser diode 3 in the Charge 107 is introduced is sufficient to ignite it.
  • the housing 106 of the Detonation body 102 encloses both charge 107 and that Ignition element 101.
  • a substance 115 is direct to the explosive of charge 107 admixed, the absorption of the laser light 13, in particular his Infrared portion, improved.
  • Ignition elements Because of their simple structure and small size, they are suitable Ignition elements according to the invention in particular for installation in gas generators used in airbags and belt tensioners.

Abstract

In ignition elements where the energy required to ignite the charge is produced using a laser source, the laser light is injected by means of an optical fiber or a laser optics system enabling the laser light to be focused onto the charge at the required intensity for ignition. Transmission losses and injection losses occur while the laser light is transmitted by means of optical devices or optical fibers. Known ignition devices are also complicated in terms of construction. According to the invention, the laser light source is a laser diode (3) and the explosive (4) that is to be ignited is arranged directly on the part (12) of the housing (8) of the laser diode (3) that allows the laser light (13) to pass through it.

Description

Die Erfindung betrifft ein Zündelement mit einer Laserlichtquelle entsprechend dem Oberbegriff des ersten Anspruchs.The invention relates to an ignition element with a laser light source according to the Preamble of the first claim.

Es sind Zündelemente bekannt, bei denen der die Initialzündung auslösende Explosivstoff mittels einer Laserlichtquelle gezündet wird. Die Laserlichtquelle ist außerhalb des Raumes angeordnet, der den Explosivstoff enthält. Das Laserlicht wird entweder über einen Lichtleiter oder über einen Durchgangskanal dem Explosivstoff der Initialzündung zugeleitet. Zur Einkopplung des Laserlichtes in den Durchgangskanal ist in der Regel eine Laseroptik erforderlich, um das Laserlicht in der zur Zündung erforderlichen Intensität auf den Explosivstoff zu fokussieren. Die Explosion des Initialzünders zündet die Ladung eines Detonationskörpers, beispielsweise eines Geschosses. Der Detonationskörper kann aber auch eine Ladung mit einem Explosivstoff enthalten, zu dessen Zündung bereits die Energie des Laserlichts genügt, so daß keine Initialzündung erforderlich ist.Ignition elements are known in which the one which triggers the initial ignition Explosive is ignited by means of a laser light source. The laser light source is placed outside the room containing the explosive. The laser light will either through an optical fiber or through a through-channel to the explosive fed to the initial spark. For coupling the laser light into the Through channel laser optics is usually required to get the laser light in to focus on the explosive at the intensity required for ignition. The Explosion of the initial detonator ignites the charge of a detonation body, for example a floor. The detonation body can also be a Contain a charge with an explosive, for the ignition of which the energy of the Laser light is sufficient so that no initial ignition is required.

Aus der US-PS 3,362,329 sind zwei Ausführungen eines Zündelements bekannt. Bei der ersten Ausführung wird das Laserlicht mittels eines Lichtleiters von der Laserlichtquelle dem Explosivstoff des Zündelements zugeführt. Dabei ist zwischen dem Lichtleiter und dem Explosivstoff des Zündeiements eine Einkoppeloptik geschaltet. Entsprechend der zweiten Ausführung ist die Laserlichtquelle so angeordnet, daß das Laserlicht durch eine Öffnung in einem Schild, der die Laserlichtquelle von dem Explosivstoff des Zündelements trennt, und ein daran anschließendes, die Filter- und Verstärkeroptik enthaltendes isoliertes Rohr auf den Explosivstoff des Zündelements geleitet wird. Die bekannten Zündelemente weisen den Nachteil auf, daß die Lichtleiter mit ihrer Einkoppeloptik oder die der Laserlichtquelle vorzuschaltende Filter- und Verstärkeroptik konstruktiv aufwendig sind. Außerdem entstehen bei der Übertragung des Laserlichts mittels optischer Einrichtungen oder Lichtleiter Übertragungs- und Kopplungsverluste. Two versions of an ignition element are known from US Pat. No. 3,362,329. at In the first embodiment, the laser light is transmitted from the Laser light source supplied to the explosive of the ignition element. It is between coupling optics to the light guide and the explosive of the ignition element connected. According to the second embodiment, the laser light source is like this arranged that the laser light through an opening in a sign that the Separates the laser light source from the explosive of the ignition element, and one on it subsequent insulated pipe containing the filter and amplifier optics onto the Explosive of the ignition element is conducted. The known ignition elements have the disadvantage that the light guide with its coupling optics or the Laser and light source filter and amplifier optics complex are. In addition, the transmission of laser light by means of optical Equipment or fiber optic transmission and coupling losses.

Aus der US-PS 5,660,413 ist ein Zündelement für einen Airbag bekannt. Der Explosivstoff ist von der Laserdiode durch einen Spalt und eine sich daran anschließende bikonkave Glasdichtung getrennt.An ignition element for an airbag is known from US Pat. No. 5,660,413. The Explosive is from the laser diode through a gap and an attached to it subsequent biconcave glass seal separated.

Aus der DE 38 38 896 A1 ist ein mit einer Speicherschicht versehenes laserinitiierbares Zünd-/Anzündelement bekannt. Es besitzt ein Fenster, durch das das Laserlicht zu dem Explosivstoff gelangen kann. Das Fenster ist mit einer lichtabsorbierenden Speicherschicht belegt, durch die die Laserimpulse in zeitlich gedehnte Wärmeimpulse umgewandelt werden. DE 38 38 896 A1 describes a storage layer known laser-initiable ignition / ignition element. It has a window through which the Laser light can reach the explosive. The window is with one light-absorbing storage layer occupied by which the laser pulses in temporally stretched heat pulses are converted.

Aufgabe der vorliegenden Erfindung ist es, ein Zündelement mit einer Laserlichtquelle vorzustellen, das einfacher und billiger herzustellen ist und die oben erwähnten Nachteile nicht aufweist.The object of the present invention is an ignition element with a laser light source to introduce, which is easier and cheaper to manufacture and the above mentioned Does not have disadvantages.

Die Lösung der Aufgabe erfolgt mit Hilfe der kennzeichnenden Merkmale des ersten Anspruchs. Vorteilhafte Ausgestaltungen der Erfindung werden in den Unteransprüchen beansprucht.The problem is solved with the help of the characteristic features of the first Claim. Advantageous embodiments of the invention are in the Claimed claims.

Durch die fortschreitende Miniaturisierung und kostengünstige Herstellung elektronischer Bauteile ist es möglich, Laserlichtquellen in einer Größe und dabei trotzdem mit einer Strahlungsintensität herzustellen, daß sie gemäß der Erfindung ohne Lichtleiter oder Filter- und Verstärkeroptik Explosivstoffe zünden können. Die Laserlichtquelle ist eine Laserdiode, die nur noch für einen einmaligen Einsatz bestimmt ist. Der zu zündende Explosivstoff kann dabei unmittelbar auf dem für das Laserlicht durchlässigen Teil des Gehäuses der Laserdiode, der Austrittsfläche des Laserlichts, aufliegen. Die Herstellung von Zündelementen vereinfacht und verbilligt sich, da keine Einkopplung des Laserlichts durch eine Optik oder einen Lichtleiter erforderlich ist. Außerdem werden Übertragungs- und Kopplungsverluste vermieden.Due to the progressive miniaturization and cost-effective production electronic components, it is possible to use laser light sources in one size and size nevertheless manufacture with a radiation intensity that they according to the invention can ignite explosives without optical fibers or filter and amplifier optics. The Laser light source is a laser diode that is only for single use is determined. The explosive to be ignited can be directly on the for the Laser light permeable part of the housing of the laser diode, the exit surface of the Laser lights, lie on. The manufacture of ignition elements is simplified and cheaper itself, as there is no coupling of the laser light through optics or a light guide is required. In addition, transmission and coupling losses are avoided.

In vorteilhafter Ausgestaltung der Erfindung kann der dem zu zündenden Explosivstoff zugewandte, für das Laserlicht durchlässige Teil des Gehäuses der Laserdiode mit einem Stoff belegt sein, der die Absorption des Laserlichts, insbesondere des Infrarotanteils, verbessert. Dadurch wird die Wirkung des Laserlichts verstärkt. Kohlenstoff oder schwarze Metalloxide, wie beispielsweise Kupfer-, Eisen- und Manganoxide, absorbieren das Infrarotlicht besonders gut.In an advantageous embodiment of the invention, the explosive to be ignited facing part of the housing of the laser diode which is permeable to the laser light be occupied by a substance that the absorption of laser light, especially the Infrared portion, improved. This increases the effect of the laser light. Carbon or black metal oxides, such as copper, iron and Manganese oxides absorb infrared light particularly well.

In einer anderen Ausgestaltung der Erfindung können die die Absorption des Laserlichts verbessernden Stoffe dem zu zündenden Explosivstoff selbst beigemischt sein. Voraussetzung ist, daß durch die Beimischung die zweckbestimmte Wirkung des Explosivstoffs nicht beeinträchtigt wird. Durch die Beimischung erübrigt sich ein gesonderter Arbeitsgang, um die Laserdiode mit dem Absorptionsstoff zu belegen.In another embodiment of the invention, the absorption of the Materials that improve laser light are added to the explosive to be ignited his. The prerequisite is that the intended effect of the Explosive is not affected. The admixture makes it unnecessary separate operation to cover the laser diode with the absorbent.

Weiterhin kann die Laserdiode in dem zu zündenden Explosivstoff eingebettet sein, wobei es zweckmäßig ist, wenn ihre elektrischen Anschlüsse freiliegen. Bei einer eingebetteten Laserdiode steht zur Einleitung der zur Zündung erforderlichen Energie eine größere Oberfläche zur Verfügung.Furthermore, the laser diode can be embedded in the explosive to be ignited, it is expedient if their electrical connections are exposed. At a embedded laser diode is used to initiate the energy required for ignition a larger surface area is available.

In weiterer Ausgestaltung der Erfindung können der zu zündende Explosivstoff und die Laserdiode von einem gemeinsamen Gehäuse umgeben sein. Dadurch können, insbesondere bei Initialzündern, der Explosivstoff und die Laserdiode als Zündvorrichtung in einem einstückigen Bauteil kleiner Abmessung zusammengefaßt werden.In a further embodiment of the invention, the explosive and the laser diode be surrounded by a common housing. This allows especially with initial fuses, the explosive and the laser diode as Ignition device summarized in a one-piece component of small dimensions become.

Ausführungen, bei der der Explosivstoff und die Laserdiode in einem gemeinsamen Gehäuse zusammengefaßt sind, eignen sich insbesondere für Gasgeneratoren, wie sie beispielsweise in Airbags oder in Gurtstraffern eingesetzt werden.Versions in which the explosive and the laser diode in one Housings are summarized, are particularly suitable for gas generators, such as they are used, for example, in airbags or belt tensioners.

Anhand von Ausführungsbeispielen wird die Erfindung näher erläutert.The invention is explained in more detail using exemplary embodiments.

Es zeigen:

Figur 1
einen Schnitt durch einen Detonationskörper, bei dem die Laserdiode und der Explosivstoff von einem gemeinsamen Gehäuse umgeben sind und ein zur Initialzündung vorgesehenes Zündelement bilden, und
Figur 2
einen Schnitt durch einen Detonationskörper, bei dem die Laserdiode in den zu zündenden Explosivstoff direkt eingebettet ist.
Show it:
Figure 1
a section through a detonation body, in which the laser diode and the explosive are surrounded by a common housing and form an ignition element provided for initial ignition, and
Figure 2
a section through a detonation body, in which the laser diode is embedded directly in the explosive to be ignited.

Figur 1 zeigt ein Zündelement 1 in einem Detonationskörper 2 als Schnittbild. Das Zündelement 1 besteht im vorliegenden Ausführungsbeispiel aus einer Laserdiode 3, die zusammen mit dem die Initialzündung auslösenden Explosivstoff 4 in einem gemeinsamen Gehäuse 5 untergebracht ist. Dieses Zündelement 1 ist in das Gehäuse 6 des Detonationskörpers 2 eingesetzt und reicht in dessen Spreng- oder Pulverladung 7. Aus dem Gehäuse 8 der Laserdiode 3 ragen die Anschlüsse 9 zur Stromversorgung des Steuerchips 10 der Laserdiode 3. Im Bereich des Lasers 11 ist das Gehäuse 12 der Laserdiode 3 für das Laserlicht 13 durchlässig. Der dem Explosivstoff 4 für die Initialzündung zugewandte Teil des für das Laserlicht 13 durchlässige Gehäuseteil 12 bildet ein Fenster 14 in dem gemeinsamen Gehäuse 5 von Laserdiode 3 und Explosivstoff 4.FIG. 1 shows an ignition element 1 in a detonation body 2 as a sectional view. The Ignition element 1 in the present exemplary embodiment consists of a laser diode 3, which together with the explosive 4 triggering the initial ignition in one common housing 5 is housed. This ignition element 1 is in the Housing 6 of the detonation body 2 is used and extends into its explosive or Powder charge 7. The connections 9 protrude from the housing 8 of the laser diode 3 Power supply to the control chip 10 of the laser diode 3. In the area of the laser 11 the housing 12 of the laser diode 3 is transparent to the laser light 13. The one Explosive 4 for the initial ignition part of the laser light 13 permeable housing part 12 forms a window 14 in the common housing 5 of laser diode 3 and explosive 4.

Es wird ein auf die Zündung des Explosivstoffs 4 zur Initialzündung abgestimmtes Laserlicht 13 erzeugt. Das Laserlicht 13 tritt unter einem bestimmten Winkel, in der Regel zwischen 20° und 30°, aus dem Laser 11 aus, trifft auf den Explosivstoff 4 und zündet ihn. Die Energiedichte des Laserlichts 13 ist abhängig von der Bauart der Laserdiode 3 und damit ihrer Ausgangsleistung, vom Austrittswinkel des Laserlichts 13 und dem Abstand zwischen dem Laser 11 und dem Explosivstoff 4.There is a matched to the ignition of the explosive 4 for initial ignition Laser light 13 generated. The laser light 13 occurs at a certain angle in the Rule between 20 ° and 30 ° from which the laser 11 strikes the explosive 4 and ignite him. The energy density of the laser light 13 is dependent on the type of Laser diode 3 and thus its output power, from the exit angle of the laser light 13 and the distance between the laser 11 and the explosive 4.

Das Zündverhalten der Ladung kann wesentlich verbessert werden, wenn das Fenster 14 der Laserdiode 3 mit einem Stoff 15 belegt ist, der die Absorption des Laserlichts 13, insbesondere des Infrarotanteils, verbessert.The ignition behavior of the cargo can be significantly improved if the window 14 of the laser diode 3 is coated with a substance 15, which absorbs the laser light 13, especially the infrared portion, improved.

Figur 2 zeigt ein weiteres Ausführungsbeispiel der Erfindung. Im vorliegenden Ausführungsbeispiel unterscheidet sich die Laserdiode in ihrem Aufbau nicht von der Laserdiode im Ausführungsbeispiel nach Figur 1. Aus diesem Grund sind übereinstimmende Bauteile mit denselben Bezugsziffem bezeichnet.Figure 2 shows another embodiment of the invention. In the present The embodiment of the laser diode does not differ in its construction from that Laser diode in the embodiment of Figure 1. For this reason matching components designated with the same reference numerals.

Das Zündelement 101 besteht im vorliegenden Ausführungsbeispiel aus der Laserdiode 3, die direkt in den Explosivstoff der Ladung 107 des Detonationskörpers 102 eingesetzt ist und von ihm, bis auf die elektrischen Anschlüsse 9, vollständig umgeben ist. Die Ladung 107 benötigt im vorliegenden Ausführungsbeispiel keine Initialzündung. Die Energie, die durch das Laserlicht 13 von der Laserdiode 3 in die Ladung 107 eingebracht wird, reicht zu deren Zündung aus. Das Gehäuse 106 des Detonationskörpers 102 umschließt sowohl die Ladung 107 als auch das Zündelement 101. Dem Explosivstoff der Ladung 107 ist ein Stoff 115 direkt zugemischt, der die Absorption des Laserlichts 13, insbesondere seines Infrarotanteils, verbessert.The ignition element 101 in the present exemplary embodiment consists of the Laser diode 3 directly in the explosive charge 107 of the detonation body 102 is inserted and by him, except for the electrical connections 9, completely is surrounded. The charge 107 does not require any in the present exemplary embodiment Initial spark. The energy by the laser light 13 from the laser diode 3 in the Charge 107 is introduced is sufficient to ignite it. The housing 106 of the Detonation body 102 encloses both charge 107 and that Ignition element 101. A substance 115 is direct to the explosive of charge 107 admixed, the absorption of the laser light 13, in particular his Infrared portion, improved.

Aufgrund ihres einfachen Aufbaus und der geringen Größe eigenen sich die erfindungsgemäßen Zündelemente insbesondere zum Einbau in Gasgeneratoren, die in Airbags und Gurtstraffern Verwendung finden.Because of their simple structure and small size, they are suitable Ignition elements according to the invention in particular for installation in gas generators used in airbags and belt tensioners.

Claims (6)

  1. Ignition element (1) having a laser light source (3) for igniting the explosive (4, 107) in a detonation body (2), the laser light source being a laser diode (3), characterised in that the explosive (4, 107) to be ignited is arranged directly on the portion (12) of the housing (8) of the laser diode (3) that is permeable to the laser light (13).
  2. Ignition element according to claim 1, characterised in that the portion (12) of the housing (8) of the laser diode (3) that is permeable to the laser light (13) is coated with a substance (15) which improves the absorption of the laser light (13), in particular the infrared portion.
  3. Ignition element according to claim 1, characterised in that a substance (115) which improves the absorption of the laser light (13), in particular the infrared portion, is added to the explosive (107) to be ignited by means of the laser light (13).
  4. Ignition element according to one of claims 1 to 3, characterised in that the explosive (4, 107) and the laser diode (3) are surrounded by a common housing (5, 106).
  5. Ignition element according to one of claims 1 to 4, characterised in that the laser diode (3) is embedded in the explosive (107).
  6. Ignition element according to one of claims 1 to 5, characterised in that it is used in gas generators which are used, in particular, in air-bags and belt tighteners.
EP99944343A 1998-08-20 1999-08-07 Ignition element with a laser light source Expired - Lifetime EP1104540B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19837839A DE19837839A1 (en) 1998-08-20 1998-08-20 Detonator for explosive material for vehicle airbag or seatbelt tensioner, has laser diode with transparent housing in direct contact with explosive material
DE19837839 1998-08-20
PCT/EP1999/005719 WO2000011428A1 (en) 1998-08-20 1999-08-07 Ignition element with a laser light source

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EP1104540A1 EP1104540A1 (en) 2001-06-06
EP1104540B1 true EP1104540B1 (en) 2003-04-09

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US (1) US6499404B1 (en)
EP (1) EP1104540B1 (en)
JP (1) JP2002537534A (en)
AT (1) ATE237119T1 (en)
DE (2) DE19837839A1 (en)
ES (1) ES2196850T3 (en)
WO (1) WO2000011428A1 (en)

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Also Published As

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ES2196850T3 (en) 2003-12-16
DE59904975D1 (en) 2003-05-15
EP1104540A1 (en) 2001-06-06
WO2000011428A1 (en) 2000-03-02
DE19837839A1 (en) 2000-02-24
JP2002537534A (en) 2002-11-05
US6499404B1 (en) 2002-12-31
ATE237119T1 (en) 2003-04-15

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