EP0165170B1 - Ensemble de visée optique, de désignation et de poursuite d'objectif - Google Patents

Ensemble de visée optique, de désignation et de poursuite d'objectif Download PDF

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Publication number
EP0165170B1
EP0165170B1 EP85401099A EP85401099A EP0165170B1 EP 0165170 B1 EP0165170 B1 EP 0165170B1 EP 85401099 A EP85401099 A EP 85401099A EP 85401099 A EP85401099 A EP 85401099A EP 0165170 B1 EP0165170 B1 EP 0165170B1
Authority
EP
European Patent Office
Prior art keywords
target
aiming
harmonization
localization
radiation
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.)
Expired - Lifetime
Application number
EP85401099A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0165170A2 (fr
EP0165170A3 (en
Inventor
Philippe Patry
Jean-Claude Roy
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.)
Societe de Fabrication dInstruments de Mesure SFIM SA
Original Assignee
Societe de Fabrication dInstruments de Mesure SFIM SA
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 Societe de Fabrication dInstruments de Mesure SFIM SA filed Critical Societe de Fabrication dInstruments de Mesure SFIM SA
Publication of EP0165170A2 publication Critical patent/EP0165170A2/fr
Publication of EP0165170A3 publication Critical patent/EP0165170A3/fr
Application granted granted Critical
Publication of EP0165170B1 publication Critical patent/EP0165170B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/32—Devices for testing or checking
    • F41G3/326—Devices for testing or checking for checking the angle between the axis of the gun sighting device and an auxiliary measuring device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/06—Aiming or laying means with rangefinder
    • F41G3/065—Structural association of sighting-devices with laser telemeters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/14—Indirect aiming means
    • F41G3/145—Indirect aiming means using a target illuminator

Definitions

  • the present invention relates to an optical sighting, designation and objective tracking assembly.
  • the sets of this type allow the designation of a target by means of a laser transmitter (generally a rangefinder) whose radiation, generally infrared radiation, is directed by the operator towards the target which the latter observes and pursues thanks to optical sighting means.
  • a collimator is provided capable of forming a visible image of a reticle materializing the direction of sight, and superimposed on the image of the target, the reference direction (that is to say the pointing direction). of the laser rangefinder) must coincide with the direction of sight when the image of the target is placed in the center of the reticle.
  • a deviation measurement device also referred to below as "locating means”
  • locating means which also receives a signal representative of the direction of the target, thus defining for the latter a "location direction” which is that in which the locator "imagines” the target (except in the case of a laser emitter also forming an illuminator, the locator does not have 'no radiation returned by the target).
  • the spatial position of the two directional information is analyzed, and the locator derives therefrom a differenceometric signal representative of the angular difference between the location direction -which, ideally, coincides with the direction of the target as designated by the laser beam ( reference direction) - and the direction of the projectile. This information can then be used to remote control the projectile in order to bring its trajectory towards the target.
  • the laser transmitter generally cooperates with telemetric means, which also receive the radiation reflected by the target, so as to derive a telemetric signal of distance and, if necessary, of relative speed of the target, from time. propagation of the returned laser pulse.
  • the invention on the contrary, relates to the case of a purely optical aiming with reticle, that is to say where it is the operator himself who designates the target by centering his collimator, and who pursues it in his field of view.
  • the difficulty is increased by the fact that the rangefinder-devometer assembly - which is an electronic assembly - and the aiming assembly - which is a purely optical assembly - form two separate blocks. Harmonization is generally carried out by a very fine adjustment of the angular position of the beam emitted by the rangefinder relative to the aiming block which transmits it, which supposes precise means of adjustment and a very rigid mechanical structure to avoid any misalignment ulterior.
  • a first advantage arising from this arrangement lies in the decoupling which is thus carried out between the aiming block, which is an autonomous optical assembly, and the rangefinder-variometer-harmonizer assembly, essentially electronic, without modifying the harmonization of the assembly. Adaptation to any existing aiming block is thus facilitated, insofar as the harmonizing means are optically and mechanically external to it. In addition, the interchangeability of the aiming block is ensured without difficulty.
  • a second advantage lies in the dual function provided by the collimator: on the one hand, a classic reticle function allowing the operator to center his field of vision on the target, and, on the other hand, a reference source function to ensure immediate harmonization, integrated into the system. It is indeed the image of the reticle returned to the locator which defines the aforementioned "direction of location".
  • the harmonizing means comprise a diasporameter interposed on the optical path of the light rays at the output of the collimating means.
  • the part of the radiation emitted by the collimating means and returned to the locating means is preferably formed by the image of a pair of source points, of predetermined spacing, further allowing, during the calibration phase, an adjustment of the proportionality factor of the locating means.
  • the radiation of the illuminating means and that of the source points of the collimator are included in a spectral band not visible by the operator, the image of the reticle being on the other hand radiated in a visible spectral band.
  • the two aforementioned functions fulfilled by the collimator means are thus fulfilled in two different spectral bands: harmonization in the invisible infrared band, corresponding moreover to the emission band of the laser and to the best sensitivity of the locator means; and formation of a sighting reticle in visible light, thus not risking to interfere with the harmonization process.
  • a laser transmitter 100 for example a laser rangefinder delivering a telemetric signal ST, a locator assembly 200, capable of providing a deviation signal SE, a sighting block 300 which constitutes an optical invariant, a collimator 400 allowing the formation of the reticle and the source points, as well as means of harmonization 500.
  • a laser transmitter 100 for example a laser rangefinder delivering a telemetric signal ST, a locator assembly 200, capable of providing a deviation signal SE, a sighting block 300 which constitutes an optical invariant, a collimator 400 allowing the formation of the reticle and the source points, as well as means of harmonization 500.
  • the rangefinder 100 provided with its afocal optical group 110, comprises an output window 111 for the emission of the monochromatic beam, and a window input 112 for the analysis of this same beam after its reflection on the target.
  • the locator module 200 includes an input window 210, which allows two rays to illuminate a cathode ray tube image analyzer, or an equivalent device (for example a charge transfer device).
  • the computation circuit 220 of the deviation meter determines, from this information, the angular deviation of the directions of propagation of the two radiations striking the window 210.
  • the aiming block 300 is, in the example shown, a periscopic viewfinder comprising a frame 310 surmounted by a pivoting cover 320 supporting a gyrostabilized mirror 370.
  • the cover and the mirror are controlled so as to move together on command of the operator.
  • the aiming block includes an exit window 330 transmitting the visible image of the target to the operator, and located opposite another window 340 also transmitting to the operator, in superposition, the image of the reticle formed by the collimator 400.
  • a window 350 in the lower part, allows the transmission of the radiation (infrared) emitted by the range finder 100, as well as the radiation emitted by the tracer of the projectile towards the locator 200.
  • the aiming block accommodates a separating prism 360 allowing the distribution or the regrouping of the different radiations between the windows of the viewfinder.
  • the separator-deflector assembly formed by the semi-reflecting dichroic mirror 230 and the prism 240 is supported by a single body 250 which allows perfect alignment of its different optical elements, which are the optical elements associated with the rangefinder-locator assembly. , independently of the optics of the aiming block itself There is thus an interchangeable sub-assembly which behaves by optical invariant and therefore does not require rigorous positioning compared to electronic detectors (rangefinder and locator).
  • the collimator means 400 have, as indicated above, a double function of forming a firing reticle in visible light and of emitting at least one source point for harmonization, in infrared light. These two elements are materialized by construction on the same reticle glass 422, however they radiate in different spectral bands: the visible lighting is produced by a halogen lamp lighting 410, heat and spectral shape filter 411 and condenser 412. On the other hand, the illumination of the points of the reticle used for harmonization is carried out by a light-emitting diode 420 whose infrared light is brought to the corresponding zone of the reticle by a fiber optic network 421. Finally, a lens 430 is placed at the output of the collimator.
  • the harmonizing means 500 consist of a diasporameter, located at the outlet of the collimator, which makes it possible to slightly deflect the light rays coming from the latter to make them parallel to the axis of emission of the laser beam. It consists of two prisms 501, 502 with a very small apex angle, each driven by an electric motor 511, 512 under the control of a servo-control 550, and according to a harmonization signal (SH) delivered by the locator during a preliminary adjustment phase.
  • SH harmonization signal
  • This adjustment can be carried out automatically by a servo control 550 controlling the motors 511 and 512 of the diasporameter, so as to cancel the harmonization signal SH delivered by the locator.
  • optical paths identified with letters bearing the indices 3 and 6, which are those which allow harmonization, are entirely internal to the apparatus - they therefore do not require the illumination of a standard target for the surgery - and never pass through the optical unit 300 - it is therefore an optical invariant external to the system, which ensures perfect interchangeability.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Telescopes (AREA)
EP85401099A 1984-06-15 1985-06-04 Ensemble de visée optique, de désignation et de poursuite d'objectif Expired - Lifetime EP0165170B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8409391 1984-06-15
FR8409391A FR2566109B1 (fr) 1984-06-15 1984-06-15 Ensemble de visee optique, de designation et de poursuite d'objectif

Publications (3)

Publication Number Publication Date
EP0165170A2 EP0165170A2 (fr) 1985-12-18
EP0165170A3 EP0165170A3 (en) 1987-12-02
EP0165170B1 true EP0165170B1 (fr) 1991-07-24

Family

ID=9305061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401099A Expired - Lifetime EP0165170B1 (fr) 1984-06-15 1985-06-04 Ensemble de visée optique, de désignation et de poursuite d'objectif

Country Status (5)

Country Link
US (1) US4669809A (es)
EP (1) EP0165170B1 (es)
DE (1) DE3583543D1 (es)
ES (1) ES8700752A1 (es)
FR (1) FR2566109B1 (es)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514743C2 (de) * 1985-04-24 1987-02-19 Eltro GmbH, Gesellschaft für Strahlungstechnik, 6900 Heidelberg Verfahren und Schaltungsanordnung zum Harmonisieren opto-elektronischer Achsen eines Wärmebildgerätes
FR2661518B1 (fr) * 1985-12-13 1992-08-07 Thomson Trt Defense Procede d'harmonisation entre l'axe d'une lunette de visee et celui d'une camera thermique.
FR2602347B1 (fr) * 1986-07-31 1989-12-22 Applic Gles Electricite Me Dispositif d'alignement pour appareil de visee a plusieurs voies
EP0262606A3 (de) * 1986-09-26 1989-03-22 Siemens Aktiengesellschaft Einrichtung zur Justierung und Kontrolle eines in ein Wärmebildgerät integrierten Laserentfernungsmesser-Senders
US5295073A (en) * 1989-03-24 1994-03-15 Celette S.A. Device for checking the position of various points of a vehicle
DE3930564A1 (de) * 1989-09-13 1991-03-21 Messerschmitt Boelkow Blohm Optronisches visier
FR2656079B1 (fr) * 1989-12-20 1994-05-06 Etat Francais Delegue Armement Lunette episcopique modulable et reconfigurable.
DE4003932A1 (de) * 1990-02-09 1991-08-14 Messerschmitt Boelkow Blohm Verfahren zur visier-justierung bei waffensystemen
US5035472A (en) * 1990-06-20 1991-07-30 The United States Of America As Represented By The Secretary Of The Army Integrated multispectral man portable weapon sight
EP0499678B1 (de) * 1991-02-22 1995-03-15 Honeywell Ag Testgerät für einen optischen I.R. Abtaster
IL107969A (en) * 1992-12-11 1997-04-15 Hughes Aircraft Co Common aperture multi- sensor boresight mechanism
FR2700620B1 (fr) * 1993-01-18 1995-04-07 Sfim Ind Dispositif pour diriger un faisceau laser dans une direction choisie.
GB9403206D0 (en) * 1994-02-19 1994-04-13 Renishaw Plc Laser interferometer
US5506675A (en) * 1994-03-11 1996-04-09 Northrop Grumman Corporation Laser target designator tester for measuring static and dynamic error
US5448936A (en) * 1994-08-23 1995-09-12 Hughes Aircraft Company Destruction of underwater objects
DE4438955C2 (de) * 1994-10-31 1996-09-26 Swarovski Optik Kg Zielfernrohr
GB9606091D0 (en) * 1996-03-22 1996-05-22 Barr & Stroud Ltd Optical system
DE69724603T2 (de) * 1996-05-03 2004-07-08 Galileo Avionica S.P.A., Campi Bisenzio Panoramisches periskop
US5943163A (en) * 1997-08-25 1999-08-24 Selectron Management Corporation Optical and infrared periscope
AT407202B (de) 1999-06-10 2001-01-25 Perger Andreas Dr Kombinierte fernrohr- und entfernungsmessvorrichtung
US7225548B2 (en) * 2004-05-17 2007-06-05 Sr2 Group, Llc System and method for aligning multiple sighting devices
US20070040062A1 (en) * 2005-05-25 2007-02-22 Lau Daniel L Projectile tracking system
FR2895090B1 (fr) * 2005-12-19 2009-06-12 Sagem Defense Securite Appareil de visee telemetrique laser
US20100034424A1 (en) * 2008-08-06 2010-02-11 Honeywell International Inc. Pointing system for laser designator
US9683813B2 (en) 2012-09-13 2017-06-20 Christopher V. Beckman Targeting adjustments to control the impact of breathing, tremor, heartbeat and other accuracy-reducing factors
FR3070497B1 (fr) 2017-08-24 2019-09-06 Safran Electronics & Defense Instrument d'imagerie pour controler une designation de cible
JP2021500676A (ja) 2017-10-26 2021-01-07 イエダ リサーチ アンド ディベロップメント カンパニー リミテッド 多層ビューイングシステムおよび方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353871A1 (fr) * 1976-06-04 1977-12-30 Eltro Gmbh Dispositif d'harmonisation automatique de multiples appareils
FR2368042A1 (fr) * 1976-10-18 1978-05-12 Sfim Procede et dispositif pour corriger le pointage d'un illuminateur optique sur une cible visee.
DE2751086A1 (de) * 1977-11-16 1979-05-17 Krauss Maffei Ag Pruefeinrichtung fuer einen laser- entfernungsmesser
FR2475208A1 (fr) * 1980-02-01 1981-08-07 Thomson Csf Systeme de designation d'objectif par laser
US4422758A (en) * 1981-07-24 1983-12-27 The United States Of America As Represented By The Secretary Of The Army Boresighting of airborne laser designation systems

Also Published As

Publication number Publication date
DE3583543D1 (de) 1991-08-29
FR2566109B1 (fr) 1991-08-30
ES544156A0 (es) 1986-11-16
EP0165170A2 (fr) 1985-12-18
FR2566109A1 (fr) 1985-12-20
US4669809A (en) 1987-06-02
ES8700752A1 (es) 1986-11-16
EP0165170A3 (en) 1987-12-02

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