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WO2001078267A1 - Device for remote stimulation of an optoelectronic detector - Google Patents

Device for remote stimulation of an optoelectronic detector Download PDF

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Publication number
WO2001078267A1
WO2001078267A1 PCT/FR2001/001053 FR0101053W WO0178267A1 WO 2001078267 A1 WO2001078267 A1 WO 2001078267A1 FR 0101053 W FR0101053 W FR 0101053W WO 0178267 A1 WO0178267 A1 WO 0178267A1
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WO
WIPO (PCT)
Prior art keywords
source
intensities
output beam
ratio
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/FR2001/001053
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French (fr)
Inventor
Jean-Luc Assouly
Christophe Cazali
Gaël PANIGEON
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.)
MATRA BAE DYNAMICS FRANCE
Original Assignee
MATRA BAE DYNAMICS FRANCE
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 MATRA BAE DYNAMICS FRANCE filed Critical MATRA BAE DYNAMICS FRANCE
Priority to AU48490/01A priority Critical patent/AU4849001A/en
Publication of WO2001078267A1 publication Critical patent/WO2001078267A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/112—Line-of-sight transmission over an extended range
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/26—Teaching or practice apparatus for gun-aiming or gun-laying
    • F41G3/2616—Teaching or practice apparatus for gun-aiming or gun-laying using a light emitting device
    • F41G3/2622—Teaching or practice apparatus for gun-aiming or gun-laying using a light emitting device for simulating the firing of a gun or the trajectory of a projectile
    • F41G3/2655—Teaching or practice apparatus for gun-aiming or gun-laying using a light emitting device for simulating the firing of a gun or the trajectory of a projectile in which the light beam is sent from the weapon to the target
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G7/00—Direction control systems for self-propelled missiles
    • F41G7/006—Guided missiles training or simulation devices

Definitions

  • the subject of the present invention is a stimulation device making it possible to emit a free light beam for stimulating an optoelectronic detector over a long distance by simulating a source that the detector is intended to identify. It finds an important, although not exclusive, application in the stimulation of missile departure detectors on board aircraft for weapons system tests or the training of crews.
  • the invention aims in particular to provide such a device making it possible to adapt the spectral composition of the light emitted to the characteristics of the detector to be stimulated and to give the light emitted a modulation practically eliminating the risk of confusion between the emission of the device and that natural sources encountered in the environment. It also aims to provide a device which can be compact, light, mobile, quick and simple to use, making it possible to emit a powerful collimated light beam to stimulate an optronic detector at long distance.
  • the invention proposes in particular a stimulation device comprising a source of radiation, an optical collimator system for placing the radiation coming from the source in the form of an exit beam with small aperture, means interposed on the path of the radiation. in the optical system to adjust the ratio between the intensities of the output beam in at least two fractions of the emission band of the source and means for temporal modulation of the power of the output radiation according to a determined temporal sequence, driven by electronics, carried by an orientation mechanism and having its own generator.
  • the latter proposes a stimulation device comprising a source of radiation, a collimator which concentrates the beams in one direction, optomechanical systems which adapt the radiation to the application both in terms of level, in spectral composition, and which ensure the modulation of the optical signal, as well as an orientable mechanical system and an optical aiming system which make it possible to keep a moving target in a cone of light from the beam.
  • the terms "light” and “radiation” should be interpreted in a broad sense and as designating both an emission in the infrared or I 'ultraviolet as in the visible.
  • an infrared source will generally be used.
  • the light source must have an emission spectrum in the sensitivity range of the detector to be stimulated sufficiently wide to allow the ratio between the intensities in two very distinct fractions to be adjusted over a wide range.
  • the means for modulating the power of the emitted radiation can be constituted by a knife or diaphragm shutter placed near a pupil of the system, which modifies the aperture, therefore the level emitted, without modifying the dimension of the illuminated field.
  • This shutter makes it possible to reach several distinct levels between 0 and a radiation limited by the opening of the optical system. It will generally suffice from four levels such as full opening, reduction to 2/3, reduction to 1/3 and closing.
  • the means for adjusting the radiation levels in each band independently may be filters or attenuators.
  • the optical system can be purely dioptric, purely catoptric or a combination of the two to collimate the source.
  • the collimation optical system can be constituted by a telescope with a mirror. Rather than placing the source directly at the focus of this telescope, it is imaged on a deflection mirror located, him, at the focus of the telescope. This flat mirror makes it possible to reduce the central shutter and better ventilate the source.
  • the means for adjusting the ratio between the intensities in the two detection bands can be densities which act only in particular spectral bands, thus attenuating one band and not the other. To multiply the number of different ratios, these densities can be mounted on a rotating disc
  • Figure 1 is a simplified sectional view of a device
  • Figure 2 shows a possible mounting mode on a gun position mount.
  • the device shown by way of example in FIG. 1 can be used to stimulate an optronic detector carried by an aircraft and capable of identifying a determined event, such as a departure of a particular missile, by comparison between the emissions in two different fractions of the infrared spectrum.
  • a determined event such as a departure of a particular missile
  • the stimulator includes a source of infrared radiation 8 which will be temperature stabilized in order to have a stable radiation spectrum over time. It also has a collimation system that concentrates energy along the optical axis, with only a few degrees of divergence.
  • the system shown in FIG. 1 is constituted by a telescope having a parabolic mirror 10 and an objective formed by a condenser 12 and a relay lens 14.
  • the mirror is placed at the bottom of a tubular housing 16 closed by a porthole 17 made of transparent material in the infrared.
  • a cover, not shown, can be provided to protect the window against external aggressions outside periods of use.
  • a deflection plane mirror 18 placed in the axis of the housing bends the light output path such that the source and the objective can be placed in a transverse housing 20.
  • a spectral attenuator 22 is interposed on the path of the beam at the outlet of the condenser 12.
  • This attenuator is for example constituted by a disc rotating around an axis parallel to the optical axis of the system and carrying several screens. The rotation of the disc by a motor 24 makes it possible to place one or the other of the screens on the path of the beam.
  • the screen will be transparent in one of the two spectral bands and will attenuate the radiation in the other spectral band. It is then possible to independently vary the radiation in one band relative to the other.
  • a shutter 26 is placed on the light beam downstream of the spectral attenuator 24.
  • This shutter 26 makes it possible to vary the total intensity of the beam, in the same way in the two bands. It can in particular be constituted by a knife shutter making it possible to diaphragm the beam in a variable manner via a control member 28. For certain applications, this shutter will only have a few states, for example the fully open state in which it is represented on Figure 1, a completely closed state and some intermediate states, two for example.
  • a control module 30 is associated with the opto-electronic part. It includes a memory 32 in which one can store a code constituted by a beam intensity modulation law. The module can be placed in a generator box which also contains a storage battery 34 providing the various power supplies required. The module 30 sends to the motor 28 the commands necessary to repeatedly cause the opening and closing sequence chosen for the shutter 26.
  • a device intended to stimulate missile departure detectors mounted on aircraft has the following characteristics.
  • the telescope comprises a parabolic mirror 10, having a focal distance of 566 mm, open to F / 2 and a deflection mirror 18 of substantially square shape, 30 mm on one side.
  • the housing 20 contains the source, the condenser 12 of 50 mm focal length and the relay lens 14 of 100 mm focal length the shutter and the attenuator.
  • the assembly of the two boxes thus has a length of less than 600 mm, with a lateral projection of 240 mm for the box 20.
  • the expected illuminations in the band 1 to 3 km away with poor atmospheric transmission for each of the 4 levels are of 6600, 4400, 2200 and 0 pW / c 2 '
  • the bispectral ratio IR2 / IR1 without spectral density on the optical path, is 0.69.
  • the opto-electronic part of the device can be placed on a missile launching stand 36 to replace the launch tube.
  • the shooter directs the telescope as he would orient the shooting tube, using handles 38, by aiming with the aid of the telescope 40.
  • a trigger makes it possible to trigger the coded stimulation sequence.
  • the stimulator can be associated with means which simulate the departure of the missile for the pilot of the aircraft. A sound reproduction is useless given the usual distance between the stimulator and the aircraft.
  • the starting flame can be simulated by the association of a flash and a smoke generator which must be sufficiently far from the exit beam not to attenuate it.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

The invention concerns a stimulation device comprising a light source (8), a collimating optical system concentrating the light source energy in the form of a low-divergence beam, means interposed on the optical path to adjust the relationship between the intensity levels of the output beam in at least two bands of transmission from the source, and means for temporal modulation of the power of the output beam in accordance with a specific time sequence. The means are controlled by an electronics. The device is borne by mechanical orientation and powered by its own generator.

Description

DISPOSITIF DE STIMULATION A DISTANCE D' UN DETECTEUR OPTRONIQUE REMOTE STIMULATION DEVICE OF AN OPTRONIC DETECTOR

La présente invention a pour objet un dispositif de stimulation permettant d'émettre un faisceau lumineux libre pour stimuler à longue distance une détecteur optoélectronique en simulant une source que le détecteur est destiné à identifier. Elle trouve une application importante, bien que non exclusive, dans la stimulation de détecteurs de départ de missile embarqués sur avion pour des essais de système d'armes ou l'entraînement au tir des équipages.The subject of the present invention is a stimulation device making it possible to emit a free light beam for stimulating an optoelectronic detector over a long distance by simulating a source that the detector is intended to identify. It finds an important, although not exclusive, application in the stimulation of missile departure detectors on board aircraft for weapons system tests or the training of crews.

L'invention vise notamment à fournir un tel dispositif permettant d'adapter la composition spectrale de la lumière émise aux caractéristiques du détecteur à stimuler et à donner à la lumière émise une modulation éliminant pratiquement le risque de confusion entre l'émission du dispositif et celle des sources naturelles rencontrées dans l'environnement. Elle vise également à fournir un dispositif pouvant être compact, léger, mobile, de mise en œuvre rapide et simple, permettant d'émettre un puissant faisceau lumineux collimaté pour stimuler à longue distance un détecteur optronique.The invention aims in particular to provide such a device making it possible to adapt the spectral composition of the light emitted to the characteristics of the detector to be stimulated and to give the light emitted a modulation practically eliminating the risk of confusion between the emission of the device and that natural sources encountered in the environment. It also aims to provide a device which can be compact, light, mobile, quick and simple to use, making it possible to emit a powerful collimated light beam to stimulate an optronic detector at long distance.

Dans ce but l'invention propose notamment un dispositif de stimulation comprenant une source de rayonnement, un système optique collimateur de mise du rayonnement provenant de la source sous forme d'un faisceau de sortie à faible ouverture, des moyens interposés sur le trajet du rayonnement dans le système optique pour ajuster le rapport entre les intensités du faisceau de sortie dans deux fractions au moins de la bande d'émission de la source et des moyens de modulation temporelle de la puissance du rayonnement de sortie suivant une séquence temporelle déterminée, piiotée par une électronique, portés par une mécanique d'orientation et ayant un générateur propre.To this end, the invention proposes in particular a stimulation device comprising a source of radiation, an optical collimator system for placing the radiation coming from the source in the form of an exit beam with small aperture, means interposed on the path of the radiation. in the optical system to adjust the ratio between the intensities of the output beam in at least two fractions of the emission band of the source and means for temporal modulation of the power of the output radiation according to a determined temporal sequence, driven by electronics, carried by an orientation mechanism and having its own generator.

Suivant un autre aspect de l'invention, celle-ci propose un dispositif de stimulation comprenant une source de rayonnement, un collimateur qui concentre les faisceaux dans une direction, des systèmes optomécaniques qui adaptent le rayonnement à l'application à la fois en niveau, en composition spectrale, et qui assurent la modulation du signal optique, ainsi qu'un système mécanique orientable et un système optique de visée qui permettent de garder une cible en mouvement dans un cône de lumière du faisceau.According to another aspect of the invention, the latter proposes a stimulation device comprising a source of radiation, a collimator which concentrates the beams in one direction, optomechanical systems which adapt the radiation to the application both in terms of level, in spectral composition, and which ensure the modulation of the optical signal, as well as an orientable mechanical system and an optical aiming system which make it possible to keep a moving target in a cone of light from the beam.

Les termes "lumière" et "rayonnement" doivent être interprétés dans un sens large et comme désignant aussi bien une émission dans l'infra-rouge ou I' ultra-violet que dans le visible. Dans l'application de l'invention à la stimulation de détecteurs de départ de missiles, une source infra-rouge sera généralement utilisée. La source de lumière doit avoir un spectre d'émission dans le domaine de sensibilité du détecteur à stimuler suffisamment large pour permettre de régler sur une plage étendue le rapport entre les intensités dans deux fractions bien distinctes. On peut notamment utiliser à cet effet, comme source infra-rouge, une lampe à incandescence.The terms "light" and "radiation" should be interpreted in a broad sense and as designating both an emission in the infrared or I 'ultraviolet as in the visible. In the application of the invention to the stimulation of missile departure detectors, an infrared source will generally be used. The light source must have an emission spectrum in the sensitivity range of the detector to be stimulated sufficiently wide to allow the ratio between the intensities in two very distinct fractions to be adjusted over a wide range. One can especially use for this purpose, as an infrared source, an incandescent lamp.

Les moyens de modulation de la puissance du rayonnement émis peuvent être constitués par un obturateur à couteau ou à diaphragme placé à proximité d'une pupille du système, qui modifie l'ouverture, donc le niveau émis, saris modifier la dimension du champ éclairé. Cet obturateur permet d'atteindre plusieurs niveaux distincts entre 0 et un rayonnement limité par l'ouverture du système optique. Il suffira généralement de quatre niveaux tels que pleine ouverture, réduction à 2/3, réduction à 1/3 et fermeture.The means for modulating the power of the emitted radiation can be constituted by a knife or diaphragm shutter placed near a pupil of the system, which modifies the aperture, therefore the level emitted, without modifying the dimension of the illuminated field. This shutter makes it possible to reach several distinct levels between 0 and a radiation limited by the opening of the optical system. It will generally suffice from four levels such as full opening, reduction to 2/3, reduction to 1/3 and closing.

Les moyens pour ajuster les niveaux de rayonnement dans chaque bande de manière indépendante peuvent être des filtres ou des atténuateurs. Le système optique peut être purement dioptrique, purement catoptrique ou une combinaison des deux pour assurer la collimation de la source.The means for adjusting the radiation levels in each band independently may be filters or attenuators. The optical system can be purely dioptric, purely catoptric or a combination of the two to collimate the source.

Le système optique de collimation peut être constitué par un télescope à un miroir. Plutôt que de placer la source directement au foyer de ce télescope, elle est imagée sur un miroir de renvoi situé, lui, au foyer du télescope. Ce miroir plan permet de diminuer l'obturation centrale et de mieux ventiler la source.The collimation optical system can be constituted by a telescope with a mirror. Rather than placing the source directly at the focus of this telescope, it is imaged on a deflection mirror located, him, at the focus of the telescope. This flat mirror makes it possible to reduce the central shutter and better ventilate the source.

Les moyens pour ajuster le rapport entre les intensités dans les deux bandes de détection peuvent être des densités qui n'agissent que dans des bandes spectrales particulières, atténuant ainsi une bande et pas l'autre. Pour multiplier le nombre de rapports différents, ces densités peuvent être montées sur un disque tournantThe means for adjusting the ratio between the intensities in the two detection bands can be densities which act only in particular spectral bands, thus attenuating one band and not the other. To multiply the number of different ratios, these densities can be mounted on a rotating disc

Les caractéristiques ci-dessus ainsi que d'autres apparaîtront mieux à la lecture de la description qui suit d'un mode particulier de réalisation de l'invention, donné à titre d'exemple non limitatif. La description se réfère aux dessins qui l'accompagnent, dans lesquels :The above characteristics as well as others will appear better on reading the following description of a particular embodiment of the invention, given by way of nonlimiting example. The description refers to the accompanying drawings, in which:

La figure 1 est une vue en coupe simplifiée d'un dispositif; etFigure 1 is a simplified sectional view of a device; and

La figure 2 montre un mode de montage possible sur un affût de poste de tir.Figure 2 shows a possible mounting mode on a gun position mount.

Le dispositif montré à titre d'exemple sur la figure 1 est utilisable pour stimuler un détecteur optronique porté par un aéronef et apte à identifier un événement déterminé, tel qu'un départ de missile particulier, par comparaison entre les émissions dans deux fractions différentes du spectre infra-rouge. Il existe déjà de tels détecteurs. Le stimulateur comporte une source de rayonnement infra-rouge 8 qui sera stabilisée en température dans le but d'avoir un spectre de rayonnement stable dans le temps. Il comporte aussi un système de collimation qui concentre l'énergie le long de l'axe optique, avec seulement quelques degrés de divergence.The device shown by way of example in FIG. 1 can be used to stimulate an optronic detector carried by an aircraft and capable of identifying a determined event, such as a departure of a particular missile, by comparison between the emissions in two different fractions of the infrared spectrum. Such detectors already exist. The stimulator includes a source of infrared radiation 8 which will be temperature stabilized in order to have a stable radiation spectrum over time. It also has a collimation system that concentrates energy along the optical axis, with only a few degrees of divergence.

Le système montré en figure 1 est constitué par un télescope ayant un miroir parabolique 10 et un objectif formé par un condenseur 12 et une lentille relais 14. Le miroir est placé au fond d'un boîtier tubulaire 16 fermé par un hublot 17 en matériau transparent dans l'infra-rouge. Un capot non représenté peut être prévu pour protéger le hublot contre les agressions extérieures en dehors des périodes d'utilisation.The system shown in FIG. 1 is constituted by a telescope having a parabolic mirror 10 and an objective formed by a condenser 12 and a relay lens 14. The mirror is placed at the bottom of a tubular housing 16 closed by a porthole 17 made of transparent material in the infrared. A cover, not shown, can be provided to protect the window against external aggressions outside periods of use.

Un miroir plan de renvoi 18 placé dans l'axe du boîtier coude le trajet lumineux de sortie tel que la source et l'objectif peuvent être placés dans un boîtier transversal 20.A deflection plane mirror 18 placed in the axis of the housing bends the light output path such that the source and the objective can be placed in a transverse housing 20.

Cette disposition permet d'isoler la source et donc de mieux la ventiler et de rendre le système plus compact. De plus, l'occultation centrale du miroir parabolique 10 est dans ce cas plus réduite que si l'on plaçait la source et l'objectif dans le boîtier du miroir parabolique.This arrangement makes it possible to isolate the source and therefore to ventilate it better and to make the system more compact. In addition, the central occultation of the parabolic mirror 10 is in this case more reduced than if the source and the objective were placed in the housing of the parabolic mirror.

Un atténuateur spectral 22 est interposé sur le trajet du faisceau à la sortie du condenseur 12. Cet atténuateur est par exemple constitué par un disque tournant autour d'un axe parallèle à l'axe optique du système et portant plusieurs écrans. La rotation du disque par un moteur 24 permet de placer l'un ou l'autre des écrans sur le trajet du faisceau. L'écran sera transparent dans une des deux bandes spectrales et atténuera le rayonnement dans l'autre bande spectrale. Il est alors possible de faire varier indépendamment le rayonnement dans une bande par rapport à l'autre.A spectral attenuator 22 is interposed on the path of the beam at the outlet of the condenser 12. This attenuator is for example constituted by a disc rotating around an axis parallel to the optical axis of the system and carrying several screens. The rotation of the disc by a motor 24 makes it possible to place one or the other of the screens on the path of the beam. The screen will be transparent in one of the two spectral bands and will attenuate the radiation in the other spectral band. It is then possible to independently vary the radiation in one band relative to the other.

Un obturateur 26 est placé sur le faisceau lumineux en aval de l'atténuateur spectral 24. Cet obturateur 26 permet de faire varier l'intensité totale du faisceau, de la même façon dans les deux bandes. Il peut notamment être constitué par un obturateur à couteaux permettant de diaphragmer le faisceau de façon variable via un organe de commande 28. Pour certaines applications, cet obturateur ne comportera que quelques états, par exemple l'état complètement ouvert dans lequel il est représenté sur la figure 1 , un état complètement fermé et quelques états intermédiaires, deux par exemple. Un module de commande 30 est associé à la partie opto-électronique. Il comporte une mémoire 32 dans laquelle on peut stocker un code constitué par une loi de modulation d'intensité du faisceau. Le module peut être placé dans un boîtier générateur qui contient également une batterie d'accumulateurs 34 fournissant les diverses alimentations requises. Le module 30 envoie au moteur 28 les commandes nécessaires pour provoquer de façon répétitive la séquence d'ouverture et de fermeture choisie pour l'obturateur 26.A shutter 26 is placed on the light beam downstream of the spectral attenuator 24. This shutter 26 makes it possible to vary the total intensity of the beam, in the same way in the two bands. It can in particular be constituted by a knife shutter making it possible to diaphragm the beam in a variable manner via a control member 28. For certain applications, this shutter will only have a few states, for example the fully open state in which it is represented on Figure 1, a completely closed state and some intermediate states, two for example. A control module 30 is associated with the opto-electronic part. It includes a memory 32 in which one can store a code constituted by a beam intensity modulation law. The module can be placed in a generator box which also contains a storage battery 34 providing the various power supplies required. The module 30 sends to the motor 28 the commands necessary to repeatedly cause the opening and closing sequence chosen for the shutter 26.

Un dispositif destiné à stimuler des détecteurs de départ de missile montés sur aéronefs présente les caractéristiques suivantes. Le télescope comporte un miroir parabolique 10, ayant une distance focale de 566 mm, ouvert à F/2 et un miroir de renvoi 18 de forme sensiblement carrée, de 30 mm de côté. Le boîtier 20 contient la source, le condenseur 12 de 50 mm de focale et la lentille relais 14 de 100 mm de focale l'obturateur et l'atténuateur. L'ensemble des deux boîtiers présente ainsi une longueur inférieure à 600 mm, avec une saillie latérale de 240 mm pour le boîtier 20. Les éclairements attendus dans la bande 1 à 3 km de distance avec une transmission atmosphérique médiocre pour chacun des 4 niveaux sont de 6600, 4400, 2200 et 0 pW/c 2' Le rapport bispectral IR2/IR1 , sans densité spectrale sur le trajet optique, est de 0.69.A device intended to stimulate missile departure detectors mounted on aircraft has the following characteristics. The telescope comprises a parabolic mirror 10, having a focal distance of 566 mm, open to F / 2 and a deflection mirror 18 of substantially square shape, 30 mm on one side. The housing 20 contains the source, the condenser 12 of 50 mm focal length and the relay lens 14 of 100 mm focal length the shutter and the attenuator. The assembly of the two boxes thus has a length of less than 600 mm, with a lateral projection of 240 mm for the box 20. The expected illuminations in the band 1 to 3 km away with poor atmospheric transmission for each of the 4 levels are of 6600, 4400, 2200 and 0 pW / c 2 ' The bispectral ratio IR2 / IR1, without spectral density on the optical path, is 0.69.

La partie opto-électronique du dispositif peut être placée sur un affût 36 de tir de missile en remplacement du tube de lancement. Le tireur oriente le télescope comme il orienterait le tube de tir, à l'aide de poignées 38, en effectuant la visée à l'aide de la lunette 40. Une gâchette permet de déclencher la séquence de stimulation codée.The opto-electronic part of the device can be placed on a missile launching stand 36 to replace the launch tube. The shooter directs the telescope as he would orient the shooting tube, using handles 38, by aiming with the aid of the telescope 40. A trigger makes it possible to trigger the coded stimulation sequence.

Pour augmenter le réalisme, le stimulateur peut être associé à des moyens qui simulent le départ du missile pour le pilote de l'aéronef. Une restitution sonore est inutile étant donné la distance habituelle entre le stimulateur et l'aéronef. La flamme de départ peut être simulée par l'association d'un flash et d'un générateur de fumée qui doit être suffisamment écarté du faisceau de sortie pour ne pas l'atténuer. To increase the realism, the stimulator can be associated with means which simulate the departure of the missile for the pilot of the aircraft. A sound reproduction is useless given the usual distance between the stimulator and the aircraft. The starting flame can be simulated by the association of a flash and a smoke generator which must be sufficiently far from the exit beam not to attenuate it.

Claims

REVENDICATIONS 1. Dispositif de stimulation comprenant une source de lumière (8), un système optique de collimation concentrant l'énergie de la source sous forme d'un faisceau de faible divergence, des moyens interposés sur le trajet optique pour ajuster le rapport entre les intensités du faisceau de sortie dans au moins deux bandes spectrales d'émission de la source, et des moyens de modulation temporelle de la puissance du faisceau de sortie suivant une séquence temporelle déterminée pilotée par une électronique, le dispositif étant porté par une mécanique d'orientation et alimenté par un générateur propre.1. Stimulation device comprising a light source (8), an optical collimation system concentrating the energy of the source in the form of a beam of low divergence, means interposed on the optical path to adjust the ratio between the intensities of the output beam in at least two emission spectral bands of the source, and means of temporal modulation of the power of the output beam according to a determined time sequence controlled by electronics, the device being carried by an orientation mechanism and powered by a clean generator. 2. Dispositif suivant la revendication 1 , caractérisé en ce que la source de lumière a un spectre d'émission suffisamment large pour couvrir tout le domaine de sensibilité du détecteur à stimuler.2. Device according to claim 1, characterized in that the light source has a sufficiently broad emission spectrum to cover the entire range of sensitivity of the detector to be stimulated. 3. Dispositif suivant la revendication 2, caractérisé en ce que le spectre d'émission est prévu pour permettre de régler le rapport entre les intensités dans deux fractions distinctes du domaine de sensibilité.3. Device according to claim 2, characterized in that the emission spectrum is provided to allow the ratio between the intensities in two separate fractions of the sensitivity range to be adjusted. 4. Dispositif suivant la revendication 1 , caractérisé en ce que les moyens de modulation de la puissance du faisceau de sortie sont constitués par un obturateur à couteaux ou à diaphragme4. Device according to claim 1, characterized in that the means for modulating the power of the output beam consist of a knife or diaphragm shutter (26) permettant de modifier la section de passage du faisceau émis par la source.(26) used to modify the passage section of the beam emitted by the source. 5. Dispositif suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que le système optique est purement dioptrique, purement catoptrique ou une combinaison des deux.5. Device according to any one of claims 1 to 4, characterized in that the optical system is purely dioptric, purely catoptric or a combination of the two. 6. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que le système optique est un télescope présentant un miroir de coudage du faisceau (18) et la source est en dehors du boîtier portant le miroir.6. Device according to any one of the preceding claims, characterized in that the optical system is a telescope having a beam-bending mirror (18) and the source is outside the housing carrying the mirror. 7. Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce que les moyens pour ajuster les niveaux de rayonnement dans chaque bande de manière indépendante sont des filtres ou des atténuateurs.7. Device according to any one of the preceding claims, characterized in that the means for adjusting the radiation levels in each band independently are filters or attenuators. 8. Dispositif suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que les moyens (22) pour ajuster le rapport entre les intensités dans deux portions différentes de la bande d'émission comprennent un disque orientable portant des écrans atténuateurs de caractéristiques différentes qui sont amenés sur le trajet de la lumière, ou des disques en cascade. 8. Device according to any one of claims 1 to 6, characterized in that the means (22) for adjusting the ratio between the intensities in two different portions of the emission band comprise an orientable disc carrying screens attenuating characteristics different ones that are brought in the path of light, or cascading discs.
PCT/FR2001/001053 2000-04-07 2001-04-06 Device for remote stimulation of an optoelectronic detector Ceased WO2001078267A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48490/01A AU4849001A (en) 2000-04-07 2001-04-06 Device for remote stimulation of an optoelectronic detector

Applications Claiming Priority (2)

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FR00/04492 2000-04-07
FR0004492A FR2807557B1 (en) 2000-04-07 2000-04-07 DEVICE FOR REMOTELY STIMULATING AN OPTRONIC DETECTOR

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054290A (en) * 1976-06-18 1977-10-18 Walt Disney Productions Light gun having selectable modulated infrared output
EP0880242A2 (en) * 1997-05-20 1998-11-25 Canon Kabushiki Kaisha Bidirectional optical spatial transmission apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054290A (en) * 1976-06-18 1977-10-18 Walt Disney Productions Light gun having selectable modulated infrared output
EP0880242A2 (en) * 1997-05-20 1998-11-25 Canon Kabushiki Kaisha Bidirectional optical spatial transmission apparatus

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AU4849001A (en) 2001-10-23
FR2807557B1 (en) 2003-08-29
FR2807557A1 (en) 2001-10-12

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