EP0003085B1 - Dispositif de conduite de tir - Google Patents

Dispositif de conduite de tir Download PDF

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Publication number
EP0003085B1
EP0003085B1 EP78400217A EP78400217A EP0003085B1 EP 0003085 B1 EP0003085 B1 EP 0003085B1 EP 78400217 A EP78400217 A EP 78400217A EP 78400217 A EP78400217 A EP 78400217A EP 0003085 B1 EP0003085 B1 EP 0003085B1
Authority
EP
European Patent Office
Prior art keywords
crosswires
aiming
range
collimator
sighting
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
Application number
EP78400217A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0003085A1 (fr
Inventor
Michèle Leblanc
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.)
D'OPTIQUE PRECISION ELECTRONIQUE ET MECANIQUE - SOPELEM Ste
Original Assignee
D'OPTIQUE PRECISION ELECTRONIQUE ET MECANIQUE - SOPELEM Ste
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 D'OPTIQUE PRECISION ELECTRONIQUE ET MECANIQUE - SOPELEM Ste filed Critical D'OPTIQUE PRECISION ELECTRONIQUE ET MECANIQUE - SOPELEM Ste
Publication of EP0003085A1 publication Critical patent/EP0003085A1/fr
Application granted granted Critical
Publication of EP0003085B1 publication Critical patent/EP0003085B1/fr
Expired 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

Definitions

  • the present invention relates to a fire control device intended to obtain the aiming of a cannon by introducing, between the axis of this cannon and the direction of the target, an angular offset based on the trajectory of the munition.
  • the device according to the invention is used to equip an artillery vehicle.
  • An artillery vehicle cannon can pivot about two perpendicular axes relative to the vehicle.
  • the barrel is mounted on a turret so as to be able to pivot around a substantially vertical axis. Furthermore, the barrel generally pivots relative to the turret, about an axis substantially perpendicular to the axis of rotation of this turret.
  • the pointing direction of the gun relative to the direction of the target takes into account certain parameters which will be mentioned below. Because the cannon is far from the target to be hit and the ammunition describes a curve in space, it is necessary to give a so-called angle of increase between the direction of the cannon and the direction of the target. The relationship between the rise and the distance is not linear. When the vehicle carrying the barrel is tilted so that the barrel journal axis is not horizontal, account must be taken of the cant of this journal axis to correct the angle of increase accordingly. Other parameters are also important. A site correction must be made to take account of the angle of increase in particular, this correction depending on the distance. A bearing correction must also be made to take certain parameters into account, and this correction is very roughly proportional to the angle of increase.
  • a fire control device includes a firing scope.
  • This scope can be a periscopic scope or a shield scope.
  • a reticle appears in the telescope so as to define a line of collimation.
  • the collimation line is pointed at the target, the gun being parallel to this line.
  • An angular shift of the collimation line is carried out and this line is again pointed at the target.
  • the angular offset takes into account the different firing parameters.
  • the collimation line is offset by at least one optical element incorporated in the telescope and subjected to a motor mechanism.
  • the offset can be ensured either by displacement of the reticle as in American patent 2,887,774, or by operation of a diasporameter as in French patent 2,140,699, or by displacement of a mirror as in French patent 2,016,096 .
  • Determining the magnitude of the offset requires a rangefinder. This instrument measures the distance from the target and it then makes it possible to determine the appropriate values of the corrections to be made to control the motor or motors which operate the optical element or elements shifting the collimation line.
  • the measurement of the rangefinder is transformed into one or two signals suitable for the corrections to be made, these signals acting on the motors for operating the optical elements deflecting the collimation line.
  • This transformation is carried out either by an electronic computer receiving the signal from the rangefinder and possibly the signals from other sensors, or by a cam mechanism.
  • the rangefinders that we currently use are laser rangefinders.
  • the present invention relates to a firing control device such that the telemetry direction remains constantly parallel to the barrel while being located in the field of vision of the telescope.
  • the location of the telemetry line is carried out by the projection, in the riflescope, of a reticle independent of the movable reticle materializing the direction of sight.
  • the design of the device is simple and uses minimal optical elements.
  • the fire control device is intended to obtain the aiming of a cannon by introducing, between the axis of this cannon and the direction of the target, an angular offset based on the trajectory of the munition and it is composed on the one hand of a telescopic sight in which is visible the image of a shooting reticle defining a collimation line, on the other hand of the means of displacement of the shooting reticle which are subjected to the signal of a rangefinder, this rangefinder being of the laser type and provided with a set for transmitting a laser beam and a set for receiving this beam after diffusion, and it is characterized by the fact that it comprises a part a collimator integrated in the rangefinder and composed of a lens and a rangefinder pointing reticle whose image is seen in the telescope to be used to locate the direction of measurement of the distance, other share a collimator of offset of the line of collimation composed of a target and the reticle of shooting placed at the focus of this target and associated with
  • the shooting reticle is constituted by a plate provided with crossed and transparent lines standing out against an opaque background and with a reflecting face.
  • the optical reflection element comprises a semi-reflecting face positioned so that the shooting reticle on the one hand and the eyepiece of the scope on the other hand are located in the same side of said surface.
  • the rangefinder pointing collimator and the collimating line offset collimator are arranged on either side of the optical reflection element.
  • the single figure is a perspective representation, with sections, of a fire control device according to the invention.
  • the device which is the subject of the invention is placed in front of a telescopic sight which is constituted by a system of lenses comprising an objective 11 and an eyepiece 12. These lenses are aligned along the optical axis 13 which is parallel to the axis of the barrel, which is not shown.
  • the eyepiece 12 is associated with an eyepiece 14.
  • the image of a shooting reticle defining the collimation line is visible in the telescope.
  • This image comes from a collimator composed of a lens 21 and a reticle 23.
  • the reticle 23 is placed as usual at the focus of the lens 21 so as to give an image at infinity.
  • the reticle is illuminated by a light source 24 associated with an optic 25.
  • the collimator formed by the objective 21 and the reticle 23 is arranged, relative to the telescope, so that its optical axis 22 intersects the optical axis 13 of the glasses.
  • the two axes are preferably 90 ° from each other.
  • the image of the shooting reticle is returned to the scope of the telescope by a reflective optical element 3.
  • the collimation line passes through the image of the intersection of the lines of the shooting reticle 23.
  • the reflective optical element comprises a semi-reflecting plane face which can return the image of the reticle of shooting 23, while letting pass the image of the landscape.
  • the reflective optical element 3 is placed in front of the objective of the telescope so as to reflect the image to infinity of the shooting reticle.
  • the semi-reflecting face is positioned so that the shooting reticle on the one hand and the eyepiece of the telescope on the other hand are located on the same side of this face.
  • the reflective optical element provided with the semi-reflecting face is constituted either by a plane mirror or by a separating cube.
  • a control mechanism 4 exploits the signal provided by the laser rangefinder of the shooting line to move the shooting reticle 23 so as to introduce an offset in elevation of the collimation line which makes it possible to take account of certain parameters such as the rise.
  • the reticle control mechanism may include a computer established to calculate the correction to be made to the collimation line from sensor signals and the laser rangefinder.
  • the reticle is moved by a cam 41 whose profile is determined by the rise values of the shooting table.
  • the cam pivots around an axis 42 and it is driven by a motor 43.
  • the position of the cam is identified by an encoder 44.
  • the signal supplied by the laser rangefinder is transmitted to the servo which controls the motor.
  • the signal from the rangefinder is transmitted at 45 to an adder amplifier 46 which controls the motor and which receives the signal from the encoder.
  • the laser rangefinder comprises an emission assembly which comprises a laser 51 associated with an optic 52 whose optical axis is identified 53.
  • the emission assembly not being parallel to the telescope, the beam is reflected on the reflective optical element 3.
  • the range finder also comprises a reception assembly formed by a lens 54, a diaphragm 55 and a photoelectric cell 56.
  • the range finder usually comprises a counter which is not shown on the face. This counter produces a signal as a function of the time elapsing between the emission and the reception of the light beam.
  • the laser range finder includes a pointing collimator composed of the objective 54 used to focus the backscattered laser beam and of a reticle 61 for pointing and locating the telemetry.
  • This reticle is illuminated by a light source 63 associated with an optic 62.
  • an optical separating element 64 is used to separate the beam going from the reticle 61 towards the objective 54 and the laser beam focused by the objective 54.
  • This optical element 64 is constituted for example by a dichroic blade. In the embodiment which is represented in the figure, it is the beam coming from the reticle 61 which is reflected by the blade 64.
  • the aiming collimator of the rangefinder composed of the objective 54 and the reticle 61 and the aiming offset collimator composed of the objective 21 and the reticle 23 are arranged on either side of the semi-reflecting face of the plate 3.
  • the optical axis 57 of the objective 54 and the optical axis 22 of the objective 21 are aligned.
  • the semi-reflecting flat face of the blade 3 is positioned at the intersection of the optical axis 57 and the optical axis 13 of the telescope and along the bisector of the angle formed by these axes.
  • the axis 57 is perpendicular to the optical axis 13.
  • the line of sight offset collimator comprising the firing reticle 23 is mechanically secured to the laser rangefinder and in particular to the rangefinder pointing collimator.
  • the assembly is mounted in front of the bezel.
  • the light beam coming from the shooting reticle, after emerging from the objective 21, is reflected on the blade 3.
  • the image of the shooting reticle is thus projected into the scope of the telescope.
  • the plate 3 also serves to reflect the incident laser beam directed towards the target, and the backscattered laser beam coming from the target.
  • the light beam coming from the reticle 61 is reflected by the blade 64 and is then refracted to give an image at infinity.
  • the light beam passes through the reflective optical element 3 and it is focused by the objective 21 on the shooting reticle 23.
  • the light beam is reflected on the shooting reticle 23 and it is refracted again by the objective 21.
  • the beam emerges from this objective giving an infinite image of the telemetry pointing reticle.
  • the beam is reflected on the reflecting optical element 3 so that the reticle image 61 is seen in the telescope.
  • the shooting reticle 23 consists of a plate provided with crossed and transparent lines standing out against an opaque background.
  • a reflecting face is placed on this reticle, on the side of the objective 21, so as to produce a mirror.
  • the layer constituting the reflecting face can constitute the opaque background.
  • the telemetry pointing reticle 61 may be constituted by transparent lines on an opaque background or by dark lines on a light background.
  • the beam given by the reticle 61, in the path between the blade 3 and the lens 21, and the corresponding reflected beam, in the path between the lens 21 and said blade, are parallel. Furthermore, they are parallel to the optical axis 57.
  • This feature is due to the fact that the retro-reflecting system formed by the objective 21 and by the mirror of the reticle 23, placed at the focal point of the objective, constitutes an invariant optical system. .
  • the reflected beam arriving on the plate 3 has a constant position relative to the optical axis of the telescope and the image of the rangefinder reticle is therefore fixed in the field of the telescope.
  • the shooting reticle 23 can be moved by the associated mechanism 4.
  • the image of the shooting reticle is thus mobile in the scope of the telescope.
  • the movement of the shooting reticle does not affect the course of the rays coming from the telemetry reticle. Even if the reticle is not exactly perpendicular to the optical axis of the objective 21, the path of the rays is not modified.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Telescopes (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
EP78400217A 1978-01-06 1978-12-06 Dispositif de conduite de tir Expired EP0003085B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7800275A FR2414184A1 (fr) 1978-01-06 1978-01-06 Dispositif de conduite de tir
FR7800275 1978-01-06

Publications (2)

Publication Number Publication Date
EP0003085A1 EP0003085A1 (fr) 1979-07-25
EP0003085B1 true EP0003085B1 (fr) 1980-04-02

Family

ID=9203166

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78400217A Expired EP0003085B1 (fr) 1978-01-06 1978-12-06 Dispositif de conduite de tir

Country Status (8)

Country Link
US (1) US4213700A (xx)
EP (1) EP0003085B1 (xx)
AR (1) AR219571A1 (xx)
AT (1) AT363822B (xx)
BR (1) BR7808284A (xx)
ES (1) ES475998A1 (xx)
FR (1) FR2414184A1 (xx)
NO (1) NO143392C (xx)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410398A (en) * 1979-08-20 1995-04-25 Northrop Grumman Corporation Automatic boresight compensation device
DE3428990A1 (de) * 1984-08-07 1986-02-20 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Vorrichtung zur harmonisierung der optischen achsen eines visiers
US4993833A (en) * 1987-10-09 1991-02-19 Kontron Elektronik Gmbh Weapon aiming device
DE8808024U1 (xx) * 1988-06-22 1988-10-27 Krupp Atlas Elektronik Gmbh, 2800 Bremen, De
DE4003932A1 (de) * 1990-02-09 1991-08-14 Messerschmitt Boelkow Blohm Verfahren zur visier-justierung bei waffensystemen
DE4020150C2 (de) * 1990-06-25 2003-11-20 Leica Geosystems Ag Vorrichtung zur Darstellung einer Zielmarke
US5180881A (en) * 1991-06-12 1993-01-19 Electronics & Space Corp. Beam steered laser for fire control
US5434704A (en) * 1992-08-14 1995-07-18 Litton Systems, Inc. Night vision weapon sight
DE4305588C1 (de) * 1993-02-24 1994-06-30 Zeiss Carl Fa An eine Nachtsichteinrichtung adaptierbarer elektrooptischer Entfernungsmesser
DE4438955C2 (de) * 1994-10-31 1996-09-26 Swarovski Optik Kg Zielfernrohr
GB9920455D0 (en) 1999-08-31 1999-11-03 Fire Point Uk Limited Magnetic lightweight collimator
AT515276B1 (de) * 2014-01-13 2021-02-15 Swarovski Optik Kg Fernrohr mit Prismen-Umkehrsystem

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887774A (en) 1954-09-30 1959-05-26 Beaconing Optical And Prec Mat Apparatus for adjusting the reticule of a range-finding mechanism
DE1210360B (de) * 1964-11-07 1966-02-03 Leitz Ernst Gmbh Mit einem Laser-Entfernungsmesser gekoppelte Visiervorrichtung
US3575085A (en) 1968-08-21 1971-04-13 Hughes Aircraft Co Advanced fire control system
FR2140699A5 (xx) 1970-09-08 1973-01-19 France Etat
SE416583B (sv) * 1976-02-25 1981-01-19 Bofors Ab Siktsanordning vid direktskjutande vapen
FR2344807A1 (fr) * 1976-03-17 1977-10-14 Realisa Electroniques Et Dispositif de visee pour poste de tir de projectiles

Also Published As

Publication number Publication date
BR7808284A (pt) 1979-08-07
FR2414184A1 (fr) 1979-08-03
US4213700A (en) 1980-07-22
EP0003085A1 (fr) 1979-07-25
NO784147L (no) 1979-07-09
ES475998A1 (es) 1979-10-16
FR2414184B1 (xx) 1980-05-16
NO143392B (no) 1980-10-20
AR219571A1 (es) 1980-08-29
AT363822B (de) 1981-09-10
ATA10579A (de) 1981-01-15
NO143392C (no) 1981-01-28

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