EP1067356B1 - Optical igniter using a graded index glass rod lens - Google Patents
Optical igniter using a graded index glass rod lens Download PDFInfo
- Publication number
- EP1067356B1 EP1067356B1 EP00401935A EP00401935A EP1067356B1 EP 1067356 B1 EP1067356 B1 EP 1067356B1 EP 00401935 A EP00401935 A EP 00401935A EP 00401935 A EP00401935 A EP 00401935A EP 1067356 B1 EP1067356 B1 EP 1067356B1
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- European Patent Office
- Prior art keywords
- optical
- pyrotechnic composition
- engaged
- contact
- rod
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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.)
- Expired - Lifetime
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Classifications
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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 present invention relates to an igniter optical system comprising a pyrotechnic composition ignition is achieved by means of laser radiation who is brought to this pyrotechnic composition by an optical fiber.
- one of the ends of the optical fiber is connected to a source of laser radiation and the other end of this fiber is engaged in a connector.
- This type of optical igniter also includes means for ensuring a removable mechanical connection between the optical fiber connector and the pyrotechnic composition.
- the object of the present invention is to overcome the difficulties above, by creating an optical igniter at the same time simple to realize and to mount, inexpensive, that saves energy and whose operation is perfectly reliable.
- the invention thus aims at an optical igniter comprising a pyrotechnic composition and a fiber one end of which is connected to a source of laser radiation, the other end adjacent to the pyrotechnic composition being engaged in a connector, means ensuring a mechanical connection between the fiber optic connector and the pyrotechnic composition.
- this optical igniter provides that between the connector and the pyrotechnic composition is inserted a glass bar whose axis is aligned along the axis of the optical fiber and that of the pyrotechnic composition, this bar in glass being index gradient and consisting of one or two coaxial parts in contact with the composition pyrotechnic and with the end of the optical fiber, so that the laser radiation from said end of the optical fiber crosses the bar in glass and focuses on the face of the glass bar in contact with the pyrotechnic composition.
- the invention further comprises the peculiar configurations of the index gradient glass bar both recited in the following independent claim 1.
- the insertion of the aforementioned glass bar between the optical fiber and the pyrotechnic composition ensures perfect transmission of laser energy to this pyrotechnic composition, which guarantees a perfectly reliable operation of the igniter.
- the gradient glass bar of index is engaged in a bore made in a element made of thermally insensitive material.
- This material may be of metal with low thermal conductivity, which excludes copper and aluminum.
- the above item can also be ceramic.
- the element thermally insensitive material is of a form cylindrical or frustoconical.
- the optical igniter comprises a composition pyrotechnic 1 and an optical fiber 2 of which one end is connected to a radiation source laser such as a laser diode.
- the other end of the optical fiber 2 adjacent to the pyrotechnic composition 1 is engaged in a connector 3 carried by a connection ring 3a.
- Means which will be detailed later provide a removable mechanical connection between the connector 3 of the optical fiber 2 and the composition pyrotechnic 1.
- This bore 5 encloses a glass bar 6 to index gradient of which one face is in contact with the pyrotechnic composition 1.
- the opposite side of the bar 6 is intended, after assembly to come in contact with the end 2a of the optical fiber 2.
- the laser radiation 7 (see figure 2) from the end 2a of the optical fiber 2 cross the glass bar 6 and focuses on the face 6d of the glass bar 6 in contact with the composition pyrotechnic 1.
- Element 4 in poorly conductive matter thermally can be of low conductive metal thermally, such as stainless steel. Metals such that copper and aluminum can not be suitable.
- Element 4 in poorly conductive matter thermally can also be ceramic.
- the element 4 in thermally insensitive material is of a form cylindrical.
- the cylinder 4 is housed in a cylindrical cavity 8 formed in the metal envelope 9 that surrounds the composition pyrotechnic 1.
- a tip 11 is screwed into a bore threaded 9a of the envelope 9, so that the end supports hermetically cylinder 4 against the composition pyrotechnic 1.
- the diameter of the glass rod 6 gradient of index can vary between 1 and 2 mm approximately.
- the length of the gradient glass bar of index is of the order of 5 mm.
- This length is such that the radiation laser 7 from the optical fiber 2 can focus on its end.
- the ratio of the length of the glass bar 6 on its diameter corresponds to the characteristic half-step gradient gradient glass optics.
- the cylinder 4 which door bar 6 is housed in a cylindrical cavity 8a formed in the metal tip 11a which surrounds the connector 3 of the optical fiber (2) after screwing in the metal shell 9 which surrounds the composition pyrotechnic 1.
- the bar 6 gradient gradient glass is housed in a bore 5a practiced in the metal tip 11b which after assembly surrounds the connector 3 of the optical fiber 2 and which is screwed into the metal shell 9 surrounding the pyrotechnic composition 1.
- the bar in gradient gradient glass is in two parts.
- a first part 6a of the gradient glass bar of index is housed in a bore 5b made in a metal tip 11c which after mounting surrounds the connector 3 of the optical fiber 2 and which is screwed into the metal envelope 9 that surrounds the composition pyrotechnic 1.
- a second part 6b of the bar in glass is housed in a bore made in an element 12 attached to the end of connector 3 of the fiber optical 2.
- Figure 6 shows the layout of both parts of the bar 6a, 6b, after screwing on the ring 3a on the tip 11c.
- the ratio of the length to the diameter of each portion 6a, 6b of the glass bar corresponds to the characteristic quarter-foot of the gradient gradient glass.
- Figure 6 also illustrates the path of the laser radiation in both parts 6a, 6b of gradient bar.
- the laser radiation focuses on the end of the pyrotechnic composition 1.
- Figure 6 shows that a space d exists between the two bar portions 6a, 6b. This distance d can vary from one igniter to another, thus making it possible to compensate for manufacturing tolerances and to save manufacturing and assembly costs.
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Couplings Of Light Guides (AREA)
Description
La présente invention concerne un allumeur optique comprenant une composition pyrotechnique dont l'allumage est réalisé au moyen d'un rayonnement laser qui est amené vers cette composition pyrotechnique par une fibre optique.The present invention relates to an igniter optical system comprising a pyrotechnic composition ignition is achieved by means of laser radiation who is brought to this pyrotechnic composition by an optical fiber.
Dans ce type d'allumeur optique l'une des extrémités de la fibre optique est raccordée à une source de rayonnement laser et l'autre extrémité de cette fibre est engagée dans un connecteur.In this type of optical igniter one of the ends of the optical fiber is connected to a source of laser radiation and the other end of this fiber is engaged in a connector.
Ce type d'allumeur optique comporte également des moyens pour assurer une liaison mécanique amovible entre le connecteur de la fibre optique et la composition pyrotechnique.This type of optical igniter also includes means for ensuring a removable mechanical connection between the optical fiber connector and the pyrotechnic composition.
Un tel allumeur optique a été décrit dans un article publié en 1997 dans la revue « EG & G Optoelectronics » et intitulé « Commercialization of a laser ignited actuator ».Such an optical igniter has been described in a article published in 1997 in the journal EG & G Optoelectronics And entitled "Commercialization of a laser ignited actuator ".
Un autre example d'allumeur optique à barreau en verre est divulgué dans le document US-A-5 914 458.Another example of an optical lighter with a glass bar is disclosed in US-A-5,914,458.
Dans la pratique, la réalisation d'un tel allumeur optique présente de nombreuses difficultés pour obtenir une parfaite transmission du rayonnement laser, sans perte d'énergie, entre la fibre optique et la composition pyrotechnique.In practice, the realization of such optical igniter presents many difficulties for obtain a perfect transmission of the laser radiation, without loss of energy, between the optical fiber and the pyrotechnic composition.
Le but de la présente invention est de surmonter les difficultés ci-dessus, en créant un allumeur optique à la fois simple à réaliser et à monter, peu coûteux, qui économise l'énergie et dont le fonctionnement est parfaitement fiable.The object of the present invention is to overcome the difficulties above, by creating an optical igniter at the same time simple to realize and to mount, inexpensive, that saves energy and whose operation is perfectly reliable.
L'invention vise ainsi un allumeur optique comprenant une composition pyrotechnique et une fibre optique dont une extrémité est raccordée à une source de rayonnement laser, l'autre extrémité adjacente à la composition pyrotechnique étant engagée dans un connecteur, des moyens assurant une liaison mécanique amovible entre le connecteur de la fibre optique et la composition pyrotechnique.The invention thus aims at an optical igniter comprising a pyrotechnic composition and a fiber one end of which is connected to a source of laser radiation, the other end adjacent to the pyrotechnic composition being engaged in a connector, means ensuring a mechanical connection between the fiber optic connector and the pyrotechnic composition.
Suivant l'invention, cet allumeur optique prévoit qu'entre le connecteur et la composition pyrotechnique est inséré un barreau en verre dont l'axe est aligné suivant l'axe de la fibre optique et celui de la composition pyrotechnique, ce barreau en verre étant à gradient d'indice et constitué d'une ou deux parties coaxiales en contact avec la composition pyrotechnique et avec l'extrémité de la fibre optique, de telle sorte que le rayonnement laser issu de ladite extrémité de la fibre optique traverse le barreau en verre et se focalise sur la face du barreau en verre en contact avec la composition pyrotechnique.According to the invention, this optical igniter provides that between the connector and the pyrotechnic composition is inserted a glass bar whose axis is aligned along the axis of the optical fiber and that of the pyrotechnic composition, this bar in glass being index gradient and consisting of one or two coaxial parts in contact with the composition pyrotechnic and with the end of the optical fiber, so that the laser radiation from said end of the optical fiber crosses the bar in glass and focuses on the face of the glass bar in contact with the pyrotechnic composition.
L'invention comprend en outre les configurations péculiares du barreau en verre à gradient d'indice à la fois récitées dans la suite de la revendication indépendante 1.The invention further comprises the peculiar configurations of the index gradient glass bar both recited in the following independent claim 1.
Etant donné que la réalisation d'un tel allumeur ne pose pas de problème d'alignement très précis entre la fibre optique et le barreau en verre à gradient d'indice, sa fabrication peut être effectuée à faible coût avec les moyens techniques usuels.Since the realization of such an igniter does not pose a problem of very precise alignment between optical fiber and gradient glass bar of index, its manufacture can be carried out at low cost with the usual technical means.
De plus, l'insertion du barreau en verre précité entre la fibre optique et la composition pyrotechnique, assure une transmission parfaite de l'énergie laser vers cette composition pyrotechnique, ce qui garantit une parfaitement fiabilité du fonctionnement de l'allumeur.In addition, the insertion of the aforementioned glass bar between the optical fiber and the pyrotechnic composition, ensures perfect transmission of laser energy to this pyrotechnic composition, which guarantees a perfectly reliable operation of the igniter.
De préférence, le barreau en verre à gradient d'indice est engagé dans un alésage pratiqué dans un élément en matière peu conductrice thermiquement. Cette matière peut être en métal peu conducteur thermiquement, ce qui exclut le cuivre et l'aluminium. L'élément ci-dessus peut également être en céramique.Preferably, the gradient glass bar of index is engaged in a bore made in a element made of thermally insensitive material. This material may be of metal with low thermal conductivity, which excludes copper and aluminum. The above item can also be ceramic.
Selon une version de l'invention l'élément en matière peu conductrice thermiquement est de forme cylindrique ou tronconique.According to one version of the invention the element thermally insensitive material is of a form cylindrical or frustoconical.
D'autres particularités et avantages de l'invention apparaítront encore dans la description ci-après. Other peculiarities and advantages of the invention will become apparent in the description below.
Aux dessins annexés, donnés à titre d'exemples non limitatifs :
- la figure 1 est une vue en coupe longitudinale de l'allumeur optique selon l'invention ;
- la figure 2 est une vue à échelle agrandie du barreau en verre à gradient d'indice ;
- la figure 3 est une vue analogue à la figure 1, montrant une deuxième version de l'allumeur selon l'invention ;
- la figure 4 est une vue analogue à la figure 1, montrant une troisième version de l'allumeur selon l'invention ;
- la figure 5 est une vue analogue à la figure 1, montrant une quatrième version de l'allumeur selon l'invention ;
- la figure 6 est une vue à échelle agrandie du barreau en verre en deux parties de l'allumeur représenté sur la figure 5.
- Figure 1 is a longitudinal sectional view of the optical igniter according to the invention;
- Figure 2 is an enlarged view of the index gradient glass bar;
- Figure 3 is a view similar to Figure 1, showing a second version of the igniter according to the invention;
- Figure 4 is a view similar to Figure 1, showing a third version of the igniter according to the invention;
- Figure 5 is a view similar to Figure 1, showing a fourth version of the igniter according to the invention;
- FIG. 6 is an enlarged view of the two part glass bar of the igniter shown in FIG.
Dans la réalisation représentée sur la figure 1,
l'allumeur optique comprend une composition
pyrotechnique 1 et une fibre optique 2 dont une
extrémité est raccordée à une source de rayonnement
laser telle qu'une diode laser.In the embodiment shown in FIG.
the optical igniter comprises a composition
pyrotechnic 1 and an
L'autre extrémité de la fibre optique 2
adjacente à la composition pyrotechnique 1 est engagée
dans un connecteur 3 porté par une bague de connexion
3a.The other end of the
Des moyens qui seront détaillés plus loin
assurent une liaison mécanique amovible entre le
connecteur 3 de la fibre optique 2 et la composition
pyrotechnique 1.Means which will be detailed later
provide a removable mechanical connection between the
Dans l'exemple de la figure 1, entre le
connecteur 3 et la composition pyrotechnique 1 est
inséré un élément 4 en une matière peu conductrice
thermiquement comportant un alésage 5 dont l'axe est
aligné suivant l'axe de la fibre optique 2. In the example of Figure 1, between
Cet alésage 5 renferme un barreau en verre 6 à
gradient d'indice dont une face est en contact avec la
composition pyrotechnique 1. La face opposée du barreau
en verre 6 est destinée, après montage à venir en
contact avec l'extrémité 2a de la fibre optique 2.This bore 5 encloses a
Du fait que le barreau 6 soit en verre à
gradient d'indice, le rayonnement laser 7 (voir figure
2) issu de l'extrémité 2a de la fibre optique 2 traverse
le barreau en verre 6 et se focalise sur la face 6d du
barreau en verre 6 en contact avec la composition
pyrotechnique 1.Since the
L'élément 4 en matière peu conductrice
thermiquement peut être en métal peu conducteur
thermiquement, tel que de l'acier inox. Les métaux tels
que le cuivre et l'aluminium ne peuvent convenir.
L'élément 4 en matière peu conductrice
thermiquement peut également être en céramique.
Dans l'exemple représenté, l'élément 4 en
matière peu conductrice thermiquement est de forme
cylindrique.In the example shown, the
Comme montré par la figure 1, le cylindre 4 est
logé dans une cavité cylindrique 8 formée dans
l'enveloppe métallique 9 qui entoure la composition
pyrotechnique 1. Un embout 11 est vissé dans un alésage
fileté 9a de l'enveloppe 9, de façon que l'embout appuie
hermétiquement le cylindre 4 contre la composition
pyrotechnique 1.As shown in FIG. 1, the
Le diamètre du barreau en verre 6 à gradient
d'indice peut varier entre 1 et 2 mm environ.The diameter of the
La longueur du barreau en verre à gradient d'indice est de l'ordre de 5 mm.The length of the gradient glass bar of index is of the order of 5 mm.
Cette longueur est telle que le rayonnement
laser 7 issu de la fibre optique 2 puisse se focaliser à
son extrémité. This length is such that the
Le rapport de la longueur du barreau en verre 6
sur son diamètre correspond au demi-pas caractéristique
optique du verre à gradient d'indice.The ratio of the length of the
Dans l'exemple de la figure 3, le cylindre 4 qui
porte le barreau 6 est logé dans une cavité cylindrique
8a formée dans l'embout métallique 11a qui entoure le
connecteur 3 de la fibre optique (2) après son vissage
dans l'enveloppe métallique 9 qui entoure la composition
pyrotechnique 1.In the example of Figure 3, the
Dans la version selon la figure 4, le barreau 6
en verre à gradient d'indice est logé dans un alésage 5a
pratiqué dans l'embout métallique 11b qui après montage
entoure le connecteur 3 de la fibre optique 2 et qui est
vissé dans l'enveloppe métallique 9 qui entoure la
composition pyrotechnique 1.In the version according to Figure 4, the
Dans l'exemple de la figure 5, le barreau en
verre à gradient d'indice est en deux parties. Une
première partie 6a du barreau en verre à gradient
d'indice est logée dans un alésage 5b pratiqué dans un
embout métallique 11c qui après montage entoure le
connecteur 3 de la fibre optique 2 et qui est vissé dans
l'enveloppe métallique 9 qui entoure la composition
pyrotechnique 1. Une seconde partie 6b du barreau en
verre est logée dans un alésage pratiqué dans un élément
12 fixé à l'extrémité du connecteur 3 de la fibre
optique 2.In the example of Figure 5, the bar in
gradient gradient glass is in two parts. A
La figure 6 montre la disposition des deux
parties de barreau 6a, 6b, après vissage de la bague 3a
sur l'embout 11c.Figure 6 shows the layout of both
parts of the
Dans ce cas, le rapport de la longueur sur le
diamètre de chaque partie 6a, 6b du barreau en verre
correspond au quart de pas caractéristique optique du
verre à gradient d'indice.In this case, the ratio of the length to the
diameter of each
La figure 6 illustre également le trajet du
rayonnement laser dans les deux parties 6a, 6b de
barreau à gradient d'indice. Figure 6 also illustrates the path of the
laser radiation in both
Comme dans le cas d'un barreau d'une seule pièce, le rayonnement laser focalise sur l'extrémité de la composition pyrotechnique 1.As in the case of a bar of one piece, the laser radiation focuses on the end of the pyrotechnic composition 1.
La figure 6 montre qu'un espace d existe entre
les deux parties de barreau 6a, 6b. Cette distance d
peut varier d'un allumeur à l'autre, ce qui permet ainsi
de compenser les tolérances de fabrication et
d'économiser les coûts de fabrication et de montage.Figure 6 shows that a space d exists between the two
L'allumeur optique que l'on vient de décrire présente les principaux avantages suivants :
- le barreau en
verre 6 à gradient d'indice permet une transmission durayonnement laser 7 pratiquement sans perte d'énergie (inférieure à 5%) ce qui permet l'utilisation d'une source laser de faible puissance, de l'ordre de 1W, telle qu'une diode laser ; - le fait que le barreau en
verre 6 soit porté par un élément facilement usinable, facilite le montage du barreau en verre dans l'allumeur et son alignement par rapport à la fibre optique et résout également le problème de l'étanchéité de l'intérieur de l'allumeur par rapport au milieu extérieur.
- the
glass rod 6 index gradient allows a transmission oflaser radiation 7 substantially without energy loss (less than 5%) which allows the use of a low power laser source, of the order of 1W , such as a laser diode; - the fact that the
glass rod 6 is carried by an easily machinable element, facilitates the mounting of the glass bar in the igniter and its alignment with respect to the optical fiber and also solves the problem of the tightness of the inside of the the igniter relative to the external environment.
Claims (9)
- Optical igniter comprising a pyrotechnic composition (1), an optical fibre (2), a first end of which is connected to a laser radiation source and the second end (2a) of which is engaged in a connector (3), means (3a, 9, 11, 11a, 11b, 11c) providing a removable mechanical link between the connector (3) and the pyrotechnic composition (1), and a rod (6) of graded-index glass, the axis of which is aligned along the axis of the optical fibre (2), which is inserted between the connector (3) and the pyrotechnic composition (1) and is in contact, on one side, with the pyrotechnic composition (1) and, on the other side, with the second end (2a) of the optical fibre (2) in such a way that the laser radiation (7) emanating from the second end (2a) of the optical fibre (2) passes through the glass rod (6, 6a, 6b) and is focussed on the face in contact with the pyrotechnic composition (1), the said rod (6) being formed:either from a single part (6), the ratio of the length to the diameter of which corresponds to one half of the optical characteristic pitch of the glass;or from two coaxial parts (6a, 6b) each having a ratio of their length to their diameter corresponding to one quarter of the optical characteristic pitch of the glass, the part (6b) in contact with the optical fibre (2) being housed in a bore made in an element (12) fastened to the end of the connector (3).
- Optical igniter according to Claim 1, characterized in that the rod (6, 6a, 6b) is engaged in a bore (5, 5a) made in an element (4, 11b, 11c) made of a material of low thermal conductivity.
- Optical igniter according to Claim 2, characterized in that the material of low thermal conductivity is a metal.
- Optical igniter according to Claim 2, characterized in that the material of low thermal conductivity is a ceramic.
- Optical igniter according to one of Claims 2 to 4, characterized in that the element (4, 11b, 11c) into which the rod (6, 6a, 6b) is engaged is of cylindrical shape.
- Optical igniter according to one of Claims 1 to 5, characterized in that the rod part (6, 6a) in contact with the pyrotechnic composition (1) is engaged in a bore (5, 5a) made in an element (4, 11b, 11c) which is housed in a metal casing (9) that surrounds the pyrotechnic composition (1) and which is pressed hermetically against the pyrotechnic composition (1) by a ferrule (11, 11a, 11b, 11c) that surrounds the connector (3) and is screwed into a threaded bore (9a) produced in the casing (9).
- Optical igniter according to Claim 6, characterized in that the element (4) into which the rod part (6, 6a) in contact with the pyrotechnic composition (1) is engaged is housed in a cavity (8) formed in the metal casing (9), the ferrule (11) bearing on that face of the element (4) on the opposite side to the pyrotechnic composition (11).
- Optical igniter according to Claim 6, characterized in that the element (4) in which the rod part (6, 6a) in contact with the pyrotechnic composition (1) is engaged is housed in a cavity (8a) formed in the ferrule (11a).
- Optical igniter according to Claim 6, characterized in that the element (11b, 11c) in which the rod part (6, 6a) in contact with the pyrotechnic composition (1) is engaged consists of the ferrule (11b, 11c).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9908717 | 1999-07-06 | ||
| FR9908717A FR2796166B1 (en) | 1999-07-06 | 1999-07-06 | GLASS BAR INDEX WITH GRADIENT INDEX |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1067356A1 EP1067356A1 (en) | 2001-01-10 |
| EP1067356B1 true EP1067356B1 (en) | 2004-06-09 |
Family
ID=9547766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00401935A Expired - Lifetime EP1067356B1 (en) | 1999-07-06 | 2000-07-05 | Optical igniter using a graded index glass rod lens |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6539868B1 (en) |
| EP (1) | EP1067356B1 (en) |
| DE (1) | DE60011347T2 (en) |
| FR (1) | FR2796166B1 (en) |
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| FR2831659B1 (en) * | 2001-10-26 | 2004-04-09 | Saint Louis Inst | LOW ENERGY OPTICAL DETONATOR |
| FR2846408B1 (en) | 2002-10-23 | 2005-06-03 | Dassault Aviat | DEVICE FOR INITIATING A PYROTECHNIC CHARGE |
| US7478594B1 (en) * | 2006-10-23 | 2009-01-20 | The United States Of America As Represented By The Secretary Of The Army | Laser primer |
| FR2914056B1 (en) | 2007-03-21 | 2010-03-12 | Nexter Munitions | OPTO PYROTECHNIC INITIATOR |
| FR2959809B1 (en) | 2010-05-10 | 2013-07-05 | Saint Louis Inst | FIRING DEVICE FOR AN INITIATOR |
| FR2978762B1 (en) * | 2011-08-01 | 2013-08-02 | Nexter Munitions | SECURITY DETONATOR |
| CN104166187B (en) * | 2013-05-17 | 2016-05-18 | 中航光电科技股份有限公司 | The explosion-proof type laser ignition joints of optical fibre |
| CN104166186B (en) * | 2013-05-17 | 2016-08-31 | 中航光电科技股份有限公司 | The laser ignition joints of optical fibre |
| CN104570231A (en) * | 2014-12-11 | 2015-04-29 | 中航光电科技股份有限公司 | Optical fiber connector socket resisting to explosive shock |
| RU2592014C2 (en) * | 2014-12-12 | 2016-07-20 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Laser initiation means |
| RU2601845C2 (en) * | 2015-04-08 | 2016-11-10 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Device for initiation of explosive charges |
| CN111121545A (en) * | 2019-12-10 | 2020-05-08 | 南京理工大学 | Optical fiber type laser igniter and ignition system |
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| US4934804A (en) * | 1989-01-13 | 1990-06-19 | Whittaker Ordnance, Inc. | Focusing optical explosive initiator and initiator window |
| US4917014A (en) * | 1989-04-24 | 1990-04-17 | Kms Fusion, Inc. | Laser ignition of explosives |
| FR2646901B1 (en) * | 1989-05-12 | 1994-04-29 | Aerospatiale | PHOTOPYROTECHNICAL PRIMING DEVICE COMPRISING A MICROLENTIL CRIMPED BY A MEMORY MATERIAL AND PYROTECHNIC CHAIN USING THE SAME |
| US4930418A (en) * | 1989-06-23 | 1990-06-05 | Whittaker Ordnance, Inc. | Method for sealing optical windows in explosive initiators |
| US5206455A (en) * | 1991-03-28 | 1993-04-27 | Quantic Industries, Inc. | Laser initiated ordnance systems |
| US5179247A (en) * | 1991-07-15 | 1993-01-12 | Ensign-Bickford Aerospace Corporation | Optically initiated detonator |
| JP3801230B2 (en) * | 1995-05-10 | 2006-07-26 | 三菱重工業株式会社 | Laser ignition type pyrotechnics ignition part |
| US5914458A (en) * | 1997-03-14 | 1999-06-22 | Quantic Industries, Inc. | Dual fiber laser initiator and optical telescope |
| US6047643A (en) * | 1997-12-12 | 2000-04-11 | Eg&G Star City, Inc. | Hermetically sealed laser actuator/detonator and method of manufacturing the same |
-
1999
- 1999-07-06 FR FR9908717A patent/FR2796166B1/en not_active Expired - Fee Related
-
2000
- 2000-07-05 EP EP00401935A patent/EP1067356B1/en not_active Expired - Lifetime
- 2000-07-05 DE DE60011347T patent/DE60011347T2/en not_active Expired - Lifetime
- 2000-07-06 US US09/611,015 patent/US6539868B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US6539868B1 (en) | 2003-04-01 |
| DE60011347D1 (en) | 2004-07-15 |
| EP1067356A1 (en) | 2001-01-10 |
| FR2796166B1 (en) | 2003-05-30 |
| FR2796166A1 (en) | 2001-01-12 |
| DE60011347T2 (en) | 2004-10-07 |
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