WO1995000887A1 - Viseur directionnel pour instruments - Google Patents

Viseur directionnel pour instruments Download PDF

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Publication number
WO1995000887A1
WO1995000887A1 PCT/CA1994/000349 CA9400349W WO9500887A1 WO 1995000887 A1 WO1995000887 A1 WO 1995000887A1 CA 9400349 W CA9400349 W CA 9400349W WO 9500887 A1 WO9500887 A1 WO 9500887A1
Authority
WO
WIPO (PCT)
Prior art keywords
sighting
sighting mark
sight
mark
sight according
Prior art date
Application number
PCT/CA1994/000349
Other languages
English (en)
Inventor
Louis-Gilles Francoeur
Pierre Langlois
Original Assignee
Francoeur Louis Gilles
Pierre Langlois
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 Francoeur Louis Gilles, Pierre Langlois filed Critical Francoeur Louis Gilles
Priority to AU70664/94A priority Critical patent/AU7066494A/en
Publication of WO1995000887A1 publication Critical patent/WO1995000887A1/fr

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G1/00—Sighting devices
    • F41G1/46—Sighting devices for particular applications
    • F41G1/467—Sighting devices for particular applications for bows
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/02—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors
    • G02B23/10—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices involving prisms or mirrors reflecting into the field of view additional indications, e.g. from collimator
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2249—Holobject properties
    • G03H2001/2284—Superimposing the holobject with other visual information

Definitions

  • a sight comprising a substantially transparent plate having formed thereon a hologram recording a single line of light on an otherwise substantially blank surface, the recorded light line having one end proximate the hologram and the other end relatively distant from the hologram and terminating at a point within the field of view of most of the hologram.
  • the sight also comprises a coherent light source, and optical means for illuminating the hologram with the light source to reconstruct a virtual image of the light line so that an observer viewing a scene through the illuminated hologram may observe the superimposition of the line light with the scene.
  • mechanical sights that are as old as the weapons themselves. They consist basically of two mechanical sighting marks disposed along the length of the weapon. They usually consist of a V-shaped fixture near the user and a small post at the other end of the weapon. The sighting is performed by properly aligning these two sighting marks with the target.
  • the present invention provides a sighting system by which a user can aim an instrument at a target with great precision by aligning two sighting marks, at least one of which is an optically produced image provided at a finite distance, so that both sighting marks do not need to be physically accommodated by the system and instrument.
  • Fig. 1 is a perspective view of a first embodiment of the invention
  • Fig. 2 is a ray diagram illustrating the production of a luminous reticle at a finite distance in space with a concave mirror
  • Fig. 3 is a ray diagram illustrating the production of a luminous reticle at a finite distance in space with a convex mirror
  • Fig. 13 is a breakaway partial side view of the preferred embodiment
  • Figs. 17 and 18 show front and side cross- sectional views of an optical device providing an image along a positioning axis
  • Fig. 19 shows a top partly cross-sectional view of the device shown in Figs. 17 and 18 mounted to an instrument; and Fig. 20 is a schematic view of the sight according to an alternative embodiment of the invention in which the viewing eye is to be located at a predetermined position.
  • Means (26) provide a second sighting mark using physical crosswires (44) and (46), and means (26) are mounted to support (22) via bracket (42) (this sight is known from US 4,136,462) .
  • bracket (42) this sight is known from US 4,136,462 .
  • the sight (20) provides a distance between the first sighting mark (52) projected at a point not too far from the eye and before the second sighting mark (53) such that accurate aiming using sight (20) is provided.
  • the plates (28) are still substantially transparent such that the target and the second sighting mark are visible through plate (28).
  • the convex and concave mirrors are semi-reflective or reflect only a small portion of the visible spectrum corresponding to the spectral bandwidth of the light source such that the second sighting mark and the target are visible through plate (28).
  • Adjustment screw (62) shown in Figs. 8 and 9 moves unit (61) to adjust an angle of hologram plate (28) in order to raise or lower first sighting mark (52) for carrying out an altitude adjustment of the line of sight.
  • the second sight (53) is vertically adjustable as a whole by loosening and tightening set screws passing through a slot in bracket (42) as shown in Fig. 1.
  • both marks (52) and (53) are raised or lowered, the line of sight is vertically adjusted (in offset or in altitude) with respect to the line of fire.
  • Fig. 8 and 9 moves unit (61) to adjust an angle of hologram plate (28) in order to raise or lower first sighting mark (52) for carrying out an altitude adjustment of the line of sight.
  • the second sight (53) is vertically adjustable as a whole by loosening and tightening set screws passing through a slot in bracket (42) as shown in Fig. 1.
  • the line of sight may be adjusted with respect to the line of fire either by means (not shown) provided between the sight and its mounting bracket or by providing some angular adjustability to plate (28) in addition to the angular adjustability provided to plates (70).
  • screws are provided for adjustably connecting frame (26) to bracket (42) such that the horizontal distance between frame (26) and bracket (42) is adjustable.
  • frame (60) is adjustably mounted to bracket (40) in the horizontal direction, and by mutual adjustment of frames (26) and (60), the line of sight may be turned in the azimuth direction, and the line of sight may also be horizontally displaced with respect to the line of fire.
  • azimuth correction of the line of sight is carried out by the adjustable mounting (35) for the light source which causes the holographic images (52) and (53) to shift in opposite directions laterally. It would also be possible to provide a pivotal amount about a vertical axis to plate (28) along with an adjustment screw in order to carry out an azimuth correction to the line of sight. Azimuth offset between sight (20) and the weapon can be carried out by the means mounting sight t20) to mounting plate (22), if required. In the first embodiment shown in Fig. 1, use of the adjustment (35) will of course only adjust the sideways position of first sighting mark (52). As best shown in Figs.
  • the hologram plates (70) (70') (70") and (70'"') which each produce a horizontal bar member of crosshairs or reticle (53) are individually adjustable about a horizontal axis passing through pivot points (72) by rotating a threaded member (76) provided on a fixed threaded shaft (78). The threaded member (76) is turnable on the shaft and engages a flexible member (74) connected to an upper end of plate (70).
  • each of the four hologram plates provides one of the four horizontal crosshair bars (46) of second sighting mark (53) which are to be calibrated for a given range under predetermined condition of bow strength and arrow type.
  • the second sighting mark (53) is an image
  • the horizontal crosshairs (46) may be adjusted in height by loosening screws (48) and raising or lowering the height of one of the five illustrated horizontal crosshairs (46).
  • the horizontal crosshairs (46) represent different sighting marks for different distances.
  • the first sighting mark (52) is projected towards the viewpoint (50) before the second sighting mark (53) provided by the intersection of wires (46) with wires (44)
  • the upper wire (46) would be the second sighting mark for close range
  • the lowest wire (46) would be the second sighting mark for a maximum range. It is of course presumed that the position of wires (46) is adjusted according to the draw and strength of the bow.
  • lateral adjustment of the sighting mark point (52) is effected using lateral adjustment means (35) shown in Fig. 1, in which set screws fix light source (30) to member (34) while allowing a lateral shift adjustment when the set screws are loose.
  • a lateral adjustment of source (30) by means (35) could also comprise a worm gear adjustment system.
  • Fig. 10 illustrates a reticle image (53) according to the preferred embodiment.
  • means (26) providing the second sighting mark are replaced by image (53) created by optical means (24).
  • a first holographic transmission plate (28) provides the first sighting mark (52) which is a point, as well as the vertical bar of sight mark (53).
  • Each plate (70) is set to be accurate for a given distance of the target, and the archer, when aiming, will focus on the part of the reticle image (53) which is appropriate for the distance of the target aimed for.
  • the sight can be considered to be calibrated and no further adjustments need to be made until there is a change in a parameter of the bow such as arrow type or draw.
  • Figure 15a shows the invention as applied to a rifle sight in which sighting marks (52) and (53) are projected to appear in front of holographic plate (28) (see Fig. 7).
  • the holographic plate (28) can be made precalibrated for specific applications such as ammunition type, such applications can be easily changed without having to readjust the sight (10). By providing a relatively large distance between sighting marks (52) and (53), improved accuracy of aiming can be achieved.
  • a variant method of using the sight (20) according to the embodiments of either Figs. 1 or 11 is illustrated.
  • the bow string is drawn a fixed distance which is usually determined by the length of the arrow.
  • the arrow is usually held at the string end by two fingers outstretched from a flat palm whereby the hand or fingers are pressed at a fixed point near the chin or cheek such that the viewing eye (50) is at a relatively fixed position (80) with respect to the bow (21) and therefore the single sight (53).
  • the sight (53) is adjusted for accuracy when the line of aiming is the line defined by the viewing eye (50) at position (80) and the appropriate one of reticles (46). Keeping the viewing eye (50) at point (80) from one shot to the next, as the altitude of shots vary for different distances, is a difficult task which requires great concentration and skill.
  • reticle (46a) in a position such that the line passing through reticle (46a) and (52) is along a positioning axis (82) intersecting the predetermined position for the viewing eye, i.e. the position of viewing eye (50) when the drawstring is held comfortably in its customary position, the archer may align reticles (52) and (46a) to confirm that his eye is in the right position (80).
  • the positioning axis (82) may correspond with an aiming axis of bow (21) for a given range.
  • axes (84a) through (c) may be aiming axes for three different ranges of bow (21).
  • axis (82) be adjacent, that is either above, below, to the right or to the left of the instrument aiming axis (84).
  • a single vertically adjustable reticle can replace the plurality of vertically spaced reticles (46b) to (46d), as is known in the competition archery art.
  • the device (86) can be mounted to bow (21) by a suitable mounting (22) allowing angular adjustment to fix axis (82) to intersect the predetermined position (80) used by the archer.
  • the device (86) can be mounted just above or below a conventional sight (26) as illustrated in Fig. 1 or it can be mounted directly to the frame of sight (26).
  • the viewing eye (50) is placed along axis (82a) to meet position (80) by raising the viewing angle towards the image of device (86) to see the colour of object (88) along axis (82a) and to see object (88) at the center of the crosshairs (85).
  • alignment of the eye at position (80) through reticle (46b) provides alignment along aiming axis (84) .
  • the position of the viewing eye (50) is not restricted by the way in which the instrument is held, it becomes necessary to fix viewing eye (50) at position (80) using an additional device (86) whose image is visible along axis (82b) so that when the viewing eye (50) sees the alignment of the image of object (88) with crosshairs (85) from both devices (86) and (86'), it has been determined that the viewing eye (50) is at position (80) allowing then the instrument to be aimed by aligning a single reticle (46b) with the target along axis (84).

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Telescopes (AREA)

Abstract

Un viseur présente un support pouvant se monter sur un instrument devant être pointé vers une cible, un dispositif optique monté sur ce support pour créer une image qui comprend un premier repère de visée à une première distance finie par rapport au dispositif optique, et un dispositif monté sur ce support pour fournir un deuxième repère de visée à une distance finie par rapport au premier repère de visée. On pointe l'instrument vers la cible en alignant les repères de visée. Le premier repère de visée au moins étant une image, on peut choisir sa position pour améliorer la précision de visée par alignement des repères sans avoir à accommoder physiquement l'instrument sur ce premier repère.
PCT/CA1994/000349 1993-06-17 1994-06-17 Viseur directionnel pour instruments WO1995000887A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU70664/94A AU7066494A (en) 1993-06-17 1994-06-17 Directional sight for instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7762693A 1993-06-17 1993-06-17

Publications (1)

Publication Number Publication Date
WO1995000887A1 true WO1995000887A1 (fr) 1995-01-05

Family

ID=22139164

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1994/000349 WO1995000887A1 (fr) 1993-06-17 1994-06-17 Viseur directionnel pour instruments

Country Status (2)

Country Link
AU (1) AU7066494A (fr)
WO (1) WO1995000887A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997043672A1 (fr) * 1996-05-10 1997-11-20 John Scott Strachan Systeme d'encadrement holographique
WO2001075810A3 (fr) * 2000-03-31 2002-05-16 Iridian Technologies Inc Procede et appareil de positionnement de sujetsutilisant un element optique holographique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1190361B (de) * 1961-05-09 1965-04-01 Wilbur Stanley Hinman Jun An einer Feuerwaffe loesbare befestigte Zieleinrichtung
US4012150A (en) * 1975-08-18 1977-03-15 Environmental Research Institute Of Michigan Holographic light line sight
DE2919889B1 (de) * 1979-05-17 1980-10-23 Heidenhain Gmbh Dr Johannes Visiereinrichtung
EP0086764A1 (fr) * 1982-02-11 1983-08-24 Nils Inge Algot Rüder Appareil de visée pour une arme à feu portative

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1190361B (de) * 1961-05-09 1965-04-01 Wilbur Stanley Hinman Jun An einer Feuerwaffe loesbare befestigte Zieleinrichtung
US4012150A (en) * 1975-08-18 1977-03-15 Environmental Research Institute Of Michigan Holographic light line sight
DE2919889B1 (de) * 1979-05-17 1980-10-23 Heidenhain Gmbh Dr Johannes Visiereinrichtung
EP0086764A1 (fr) * 1982-02-11 1983-08-24 Nils Inge Algot Rüder Appareil de visée pour une arme à feu portative

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997043672A1 (fr) * 1996-05-10 1997-11-20 John Scott Strachan Systeme d'encadrement holographique
WO2001075810A3 (fr) * 2000-03-31 2002-05-16 Iridian Technologies Inc Procede et appareil de positionnement de sujetsutilisant un element optique holographique

Also Published As

Publication number Publication date
AU7066494A (en) 1995-01-17

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