EP2075524A2 - Reflex sight - Google Patents

Abstract

The sight (10) has a dust proof and water tight housing (20) fitted with a proximal aperture (21) and a distal aperture (22) along an optic axis, and mounted on a weapon. A projection unit (40) reproduces light generated by an electric light source (50) e.g. LED, as a target mark. A feed optics (60) feeds the target mark reproduced by the projection unit into a beam along the optic axis. A polarizing beam splitting layer e.g. macneille polarizer, and a band stop filter ensure that the mark reproduced by the projection unit is visible solely from the proximal aperture.

Description

The invention relates to a reflex sight with luminous point according to the preamble of claim 1.

Reflex sights, also called collimator sights, red dot sights, red dot or red dot sights, are optical sighting devices for firearms and smaller astronomical telescopes. Unlike riflescopes they have no magnification, i. the object viewed through the visor is displayed 1: 1.

Reflex sights usually also have no reticle with reticule, but usually only a red, yellow or green luminous target point, which is reflected on a semi-transparent mirror in the eye of the shooter. A lens optic (collimator) ensures that this reticle appears to the shooter at infinity. The shooter sees through the semi-transparent mirror through the target and at the same time - reflected on the mirror - the luminous point. Since the light beam of the reticle falls exactly in the direction of the sight line, the reticle always appears in the right place regardless of the relative position of the eye to the sighting device (see for example CH-PS 538 665 or DE 43 36 956 B4 ).

This design allows both short and (small) medium distance to be targeted precisely and very quickly, as the target can always be captured with both eyes. This preserves the spatial vision and the full field of view. In addition, the target point is imaged into the infinite by means of optics, which allows the eye to focus simultaneously on the target point and the target. Reflex sights are therefore particularly suitable for use in confined spaces and for use in the dark, as long as the target is still visible.

A fundamental problem of these known Reflexvisiere is that you can see the luminous point not only from the shooter, but usually also from the targeted target. This can - depending on the intended use of the weapon - have considerable disadvantages, especially if the shooter is characterized early recognizable and / or to locate.

The aim of the invention is to overcome these and other disadvantages of the prior art and to develop a reflex sight, which is constructed inexpensively by simple means and whose target can not be sighted by the targeted object or only on a very short distance. The aim is also that you can not see the target from the object also with a night-vision device to further increase the scope of the reflex sight. The visor should also have a low weight, easy to handle and be finished with little effort.

Main features of the invention are specified in the characterizing part of claim 1. Embodiments are the subject of claims 2 to 15.

In a reflex sight with a housing, which has an insight opening and a view opening along an optical axis, with a projection device which images the light generated by a light source as a target, and with a coupling optics, which the projected by the projection device target in the beam path along coupled to the optical axis, the invention provides that at least one means is provided by which the target imaged by the projection device is substantially visible only from the viewing opening ..

As a result, the target mark or the light source (light signature) imaged by the projection device is only visible to the shooter from the viewing opening and no longer, as before, from outside through the viewing opening. The luminous point and its reflections are no longer visible from the object or for the object, which extends the applications of the reflex sight, especially at dusk or at night. The safety of the shooter is significantly increased.

An important embodiment of the invention provides that one of the means is designed such that the target mark is coupled into the beam path along the optical axis only in one direction towards the viewing opening. The light generated by the light source thus does not reach the viewing opening. Rather, the light generated by the light source is coupled into the beam path of the reflex sight so that only the shooter in the center of the field of view sees through the viewing opening a virtual target mark (a reticle). In the opposite direction, the light can not leave the reflex sight, so that no light signature can be seen from the sighted object in the view opening, not even with a night vision device.

Suitably, the means in the region of the coupling optics is formed, for example as part of the coupling optics, whereby the number of components to be mounted is reduced. The coupling optics can also form a preassembled unit that can be quickly and conveniently installed in the housing. The assembly effort is thereby simplified and reduce the manufacturing costs, which is extremely low in terms of mass production.

The means is preferably a polarizing beam splitter layer, in particular a MacNeille polarizer. For example, such a layer may be designed to effectively separate s and p polarized light at a 45 ° angle of incidence for a narrow wavelength range (eg, about 50 nm). The light reflected from the interfaces of the correspondingly trained and aligned coupling optics is thereby reflected back into itself and run back to the light source. Because this effect depends strongly on the angle of incidence, the observation beam path is only slightly influenced along the optical axis, ie the view through the visor is hardly affected.

According to a first variant of the invention, the coupling optics is a semitransparent mirror, wherein the polarizing beam splitter layer is applied as a boundary layer on the mirror.

Another variant provides that the coupling optics is formed by a prism, wherein the polarizing beam splitter layer is applied as a boundary layer on the prism.

Yet another embodiment uses as coupling optics two abutting prisms, wherein the polarizing beam splitter layer is interposed between the interfaces of the two prisms.

The prisms can be made of materials with different refractive indices and have planes parallel to one another on their sides facing away from the boundary surfaces.

A further important embodiment of the invention additionally or alternatively provides that one of the means is designed in such a way that the light reflected by the coupling optics in the direction of the view opening can not leave the reflex sight. This also ensures that the reticle generated by the light source and the projection device on the coupling-in optics is not visible from outside through the viewing aperture. The shooter is therefore not recognizable by the lack of light. The means is expediently arranged between the coupling optics and the viewing opening.

The agent is a band stop filter. This is designed in such a way that the wavelength range emitted by the light source and reflected by the coupling optics is blocked in the direction of the viewing opening. The reticle is thus no longer visible from the object, because the light of the luminous target mark can not penetrate the band stop filter. The wavelength of the light source and the formation of the band-stop filter are matched to one another in such a way that the view through the visor is only slightly impaired, in particular resulting in an insignificant or hardly disturbing displacement of the color impression. However, it is important that the wavelengths of the light source are filtered out by the band stop filter, as a result of which the sight can not be detected by a sighted object or by a night vision device.

One embodiment provides that the band stop filter is applied to the coupling-in optical system. Constructively, it is also advantageous if the bandstop filter is part of the coupling optics. This also reduces the number of parts to be assembled, which has a favorable effect on the production costs, in particular when the coupling optics forms a preassembled structural unit.

So that both the target and the target for the shooter are always sharp to recognize, the projection device on a collimating optics, which focuses the reticle at infinity. The shooter sees through the viewing aperture, the coupling optics and the outlet through the target object and at the same time - coupled from the coupling optics - the luminous reticle as a small sharp point. The projection device preferably also forms a preassembled or prefabricated assembly which can be mounted quickly and precisely in the housing.

Compact dimensions can be achieved if the projection device has at least one fully reflecting mirror. As a result, the projection of the reticle can also take place laterally next to the optical axis and can then be correspondingly deflected via the mirror.

The invention further provides that the light source can be natural light, which is admitted, for example via a window in the projection device.

If the natural light conditions are not sufficient, one can additionally or, if a natural light source is not desired, alternatively use an electric light source as the light source, for example a laser or, in the present case, a light-emitting diode (LED). This is expedient already provided directly with a diaphragm, which also has a favorable effect on the number of components. The light source is preferably integrated in the assembly of the projection device, which further reduces the assembly effort.

Also important is the training, according to which the light source is dimmable and / or switchable. As a result, the brightness of the light source can be adapted to the ambient conditions and the shooter can not be dazzled by the luminous point or the reticle itself.

A further advantage is that the distance between the collimating optics and the light source is variable.

To adapt and change the Treffpunktlage the position of the target mark is designed to be adjustable relative to the optical axis, in particular horizontally and / or vertically.

A first variant provides that the coupling optics is designed to be pivotable relative to the housing, for example by means of or in a universal joint.

Additionally or alternatively, the projection device can be designed pivotable relative to the optical axis, also in a universal joint.

In order to ensure a simple and precise handling of the reflex sight, the position of the target mark is adjustable without tools, for example by means provided on the outside of the housing adjustment towers that can be operated quickly and easily by hand. A third adjustment tower can be provided for dimming or switching the light source, so that no tool is necessary for this purpose. The reflex sight is therefore always easy to handle.

It is also important that the target is parallax-free at a given distance. This can be achieved either by a suitable presetting of the optical components or by a possible adjustability of projection device, light source and / or coupling optics, so that the reticle is always optimally located in the image plane.

For the use of the reflex sight even in extreme environments, it is advantageous if the housing is dustproof and waterproof.

Manufacturing technology, it is advantageous if the housing is in one piece. This not only has a low weight, but also an extremely high stability, whereby the reflex sight is also suitable for rough use.

Handling is further simplified if the housing can be mounted on a weapon without tools.

Fig. 1

eine Schrägansicht eines erfindungsgemäßen Reflexvisiers,

Fig. 2

eine Explosionsdarstellung des Reflexvisiers von Fig. 1,

Fig. 3

eine Schnittansicht des Reflexvisiers von Fig. 1,

Fig. 4

eine Schnittansicht einer anderen Ausführungsform eines Reflexvisiers und

Fig. 5.

eine Schnittansicht einer weiteren Ausführungsform eines Reflexvisiers.

Further features, details and advantages of the invention will become apparent from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. Show it:

Fig. 1

an oblique view of a reflex sight according to the invention,

Fig. 2

an exploded view of the reflex sight of Fig. 1 .

Fig. 3

a sectional view of the reflex sight of Fig. 1 .

Fig. 4

a sectional view of another embodiment of a reflex sight and

Fig. 5.

a sectional view of another embodiment of a reflex sight.

This in Fig. 1 generally designated 10 reflex sight has in a housing 20, a projection device 40 which images the light generated by an electric light source 50 as a target Z on a coupling optics 60. The latter is seated centrally on an optical axis A between an inspection opening 21 and a viewing opening 22 of the housing 20 and couples the target mark Z imaged by the projection device 40 into the beam path along the optical axis A. The viewing opening 21, the viewing opening 22 and the coupling optics 60 form a non-magnifying optical system, which images the target object for the shooter 1: 1. As a result, the visor 10 is always suitable for the two-eyed target acquisition.

As Fig. 1 further shows, in the region of the inspection opening 21 on the housing 20 three Verstellürme 80, 90, 100 are arranged. In a first adjustment tower 80, a height adjustment for the target Z is formed, while the second Verstellturm 90 provides a lateral adjustment. This makes it possible to move the projected by the projection device 40 and coupled by the coupling optics 60 in the field of view of the shooter target Z vertically and horizontally to the optical axis A and adjust the Treffpunktlage the visor or change.

With the third tower 100, the brightness of the electric light source 50 is controlled. He has for this purpose (not shown) electronic controller 102 to control the light source 50, and a battery or a battery 103, which supplies the light source 50 with the necessary energy.

The viewing opening 21 and the viewing opening 22 are also located centrally on the optical axis A. They are each formed by a plane-parallel glass pane 12, which are secured by means of screw rings 13 and 14 in the housing 20. The rings 13, 14 are screwed into recesses 31, 32 in the housing 20. Inserted between the screw rings 13, 14 and the housing 20 O-rings 15 seal the housing 20 to the outside, so that neither dust nor moisture can penetrate into the visor 10.

A formed at the bottom of the housing 20 recess 23 with (unspecified) undercuts used to mount the sight 10 on a (not shown) weapon, e.g. a rifle or a pistol. The mounting can be done, for example, on a (also not shown) Picatinny rail, Weaver or 11 mm prism rails.

One recognizes in Fig. 2 in that the reflex sight 10 has a modular design in that the individual components, such as the projection device 40 and the light source 50, the coupling optics 60 and the adjustment towers 80, 90 and 100 are each designed as preassembled units. These can be prefabricated precisely and inexpensively and then mounted quickly and conveniently in preferably one-piece housing 20. The latter is for this purpose provided with corresponding recesses 24, 26, 28, 29, 30, 31, 32, 33, all of which are provided peripherally with (not designated) fine threads.

The projection device 40 is integrated together with the light source 50 in a common tube sleeve 43, which is provided at the end with a thread 44 and is screwed into the interior of the housing 20 (see Fig. 3 ). The latter is provided for this purpose with a cylindrical shoulder 34 which carries a corresponding internal thread and in the direction of recess 24 forms a step 35. The tube sleeve 43 is provided in front of its thread 44 with a flange-like collar 47, which comes to rest on the step 35 when screwing the sleeve 43. The latter thus forms, together with the collar 47, a stop for the tubular sleeve 43, which therefore can always be mounted precisely in the housing 20.

The projection device 40 has - like Fig. 2 further shows - for the generation of the target Z a collimation optics 41, which is formed by a cemented element 45 and a Einzellinse 46. All three lenses 45, 46 are firmly fixed in the sleeve 43.

The electric light source 50 is a light emitting diode (LED 51). It sits end and center in a cylindrical funnel 52, which is screwed with a fine pitch 53 in the tube sleeve 43. In this way, the distance (the focal length) between the lens arrangement 45, 46 of the collimation optics 41 and the light source 50 can be optimally adjusted. The overall rotationally symmetrical structure of collimating optics 41 and light source 50 within the tube sleeve 43 is formed according to drehinvariant. In front of the light emitting diode 51 sits a (not shown) aperture, which is used either as a thin disc in the funnel 52 or as a coating on the body of the light emitting diode 51 is applied. The (also not shown) electrical connections of the LED 51 are preferably connected via flat conductor 105 with the Verstellturm 100 and the integrated circuit 102 and the battery 103 there.

By means of the collimating optics 41 and the light-emitting diode 51, the projection device 40 generates a luminous aiming mark Z in the form of a small colored spot of light. So that this can always be perceived sharply in the reflex sight 10, the lens arrangement 45, 46 of the collimating optics 41 is designed such that the screen in front of the LED 51 is always projected to infinity. The diaphragm therefore lies in the focal plane of the lens arrangement 45, 46, which can be set precisely with the arrangement according to the invention.

For the insertion of the assembly 40, 50 provided in the housing 20 recess 24 in the housing 20 is sealed with a lid 55. Between cover 55 and housing 20 is a seal (not specified), e.g. an o-ring, provided.

In order to couple the target mark Z generated by the projection device 40 into the beam path along the optical axis A of the reflex sight 10, the coupling-in optics 60 is provided. This one will - like Fig. 3 closer - formed by two prisms 63, 64 which lie flat with their interfaces 65 on each other. The boundary surfaces are at an angle of 45 ° to the optical axis A, so that from the bottom of the boundary surfaces 45 incident light in the direction of the optical axis A is refracted or mirrored. At the same time, the object or object to be sighted can be observed unhindered along the optical axis A through the prisms 63, 64. The projection device 40 therefore lies centrically on the optical axis A between the viewing opening 21 and the viewing opening 22 of the housing 20.

The prisms 63, 64 may be made of the same materials or of materials with different refractive indices. The sides 66, 67 of the prisms 63, 64 facing away from the boundary surfaces 65 form plane-parallel surfaces onto which further optical components can be applied if required (see below).

Both prisms 63, 64 together form a beam splitter 68, which is integrated in a tube sleeve 69. The latter has a spherical outer contour 71 in the area of the beam splitter 68 and a conical shaft 72 in the direction of the viewing opening 21. The housing 20 of the reflex sight 10 is provided with a corresponding spherical shell 36 for receiving the spherical outer contour 71, so that the tubular sleeve 69 is inside of the housing 20 can be pivoted in all directions. The spherical shell 36 and the spherical outer contour 71 thus form a kind of universal joint.

The assembly of the coupling optics 60 as an assembly takes place through the recesses 26 and 32 in the housing 20, by the tubular sleeve 69 is inserted with the shaft 72 in the recess 26 until the spherical outer contour 71 rests in the one-sided open spherical shell 36. The conical shaft 72 ends shortly before the viewing opening 21, so that the internal structures and other installations in the housing 20 are not visible to the shooter. Subsequently, a bearing ring 73 is screwed into the recess 26, which are both provided with corresponding threads for this purpose. The bearing ring 73 completes the ball socket 36 in the housing 20 and secures the tubular sleeve 69 in the universal joint, so that a play-free mounting of the tubular sleeve 69 is ensured.

The essentially cubic or cuboid-shaped beam splitter 68 is inserted into the tubular sleeve 69 in such a way that the center of the beam splitter 68 and thus the center of the boundary surfaces 65 lie in the center of the sphere formed by the spherical outer contour 71. Turning the tube sleeve 69 in the ball cup 36, 73 by moving the free end of the shaft 72 upwards or laterally changes the angular position of the interfaces 65 relative to the optical axis A. The target Z projected onto the beam splitter 68 thereby becomes relative shifted to the optical axis, so that the point of impact of the visor can be changed.

In order to achieve a larger adjustment range for the target mark Z, one can alternatively arrange the center of the beam splitter 68 slightly off-center to the center of the ball formed by the spherical outer contour 71. It is also conceivable to provide the universal joint 71, 36, 73 in the region of the viewing opening 21 in that the spherical outer contour is formed at the free end of the shaft 72.

In order to limit the adjustability of the target Z on two spatial directions perpendicular to the optical axis A, a groove 75 is parallel to the optical axis A introduced into the spherical outer contour 71 of the tubular sleeve 69 (see Fig. 2 ). In this groove 75 engages a (not shown) pin, which is fixed either directly in the housing 20 or in a separate cover 76. The latter is inserted into the recess 33 in the housing 20 and screwed thereto. Here, too, a seal provides for a dust-tight and watertight closure of the housing 20.

The adjustment tower 80 is designed as a height adjustment device for the target Z. He has an adjusting cap 81 which is axially fixed and rotatably mounted on a ring saddle 82. Within the annular saddle 82 sits a threaded piece 83 which is rotatably connected to the adjusting cap 82 and has a threaded bore 84 centrally. In the threaded bore 84 sits a drive pin 85, the end carries a (unspecified) corresponding external thread and rotatably in a locking ring 86 slides. This is screwed with a (not designated) external thread in the ring saddle 82 and inwändig provided with (not shown) locking recesses. In this engage between the threaded portion 83 and the locking ring 86, spring-loaded (not shown) locking elements, e.g. Spheres, so that 81 excellent locking positions are achieved when turning the cap. The distances between the detent recesses and the threaded bore 84 are matched to one another such that the resolution of the detent 1 is MOA / click and the drive pin 85 is moved with each click by a defined amount in its longitudinal direction.

The assembly of the Verstellturms 80 as a prefabricated module takes place in the recess 28 in the top of the housing 20 by the ring saddle 82 is screwed with an external thread 87 in the housing 20. Not shown O-rings seal both the Verstellturm 80 and the housing 20 from dust and waterproof.

The drive pin 85 of the Verstellturms 80 abuts with its free end at the free end of the shaft 72 of the tube sleeve 69 of the coupling optics 60 and is rotatably guided in the locking ring 86. If the adjusting cap 81 is rotated, the threaded piece 83 rotates and the driving pin 85 inserted in the threaded bore 84 is pushed or pulled out of the threaded piece 83, depending on the direction of rotation. The cap 81 is designed so large that it can be easily operated by hand, even if the shooter should wear gloves. In order to further increase the precision of the height adjustment 80, the edge region of the shaft 72 is convex in cross section with a circumferential edge 78, so that the drive pin 85 abuts with its free end almost punctiformly on the shaft 72.

The drive pin 85 can either be pivotally connected to the shaft 72 or it is - as shown in the present embodiment - to the V-shaped cross-section of the shaft 72 at. The latter is loaded in this case by a (not shown) spring, so that the drive pin 85 moves the shaft 72 against the spring. As a result, a very precise and play-free storage is achieved.

The adjustment tower 90 for the lateral adjustment is constructed identically to the adjustment tower 80 for the height adjustment and used as a preassembled module in the recess 29 laterally in the housing. The drive pin (not shown) of the adjustment tower 90 engages perpendicularly to the drive pin 85 of the adjustment tower 80 on the side of the shaft 72.

The adjustment tower 100 for the regulation of the brightness of the electric light source 50 has a saddle 101, which is screwed with an external thread 106 into a recess in the housing 20. He carries axially fixed and rotatable a collar 107, via which the brightness of the light source 50 can be adjusted. The adjusting ring 107 is connected via a (not shown) mechanism with an actuator of the electronic control 102. In the Verstellturm 100 a lid 108 is inserted end, preferably screwed, which allows access to the battery 103 in order to replace these quickly and easily. The entire assembly is sealed against dust and moisture by means of sealing rings (not shown). An O-ring 109 seals the saddle 101 relative to the housing 20, so that it is also dustproof and waterproof at this point.

Stufe 1 bis 3:

sehr dunkel, zur Verwendung des Visiers 10 mit einer Nachtsichtbrille;

Stufe 4 bis 6:

relativ dunkel, zur Verwendung des Visiers 10 bei schlechten Lichtverhältnissen;

Stufe 7 bis 11:

hell, zur Verwendung des Visiers 10 in hellem Tageslicht oder vor hellen Hintergründen.

The adjustment of the brightness of the electric light source 50 can be made steplessly or in defined stages. In the latter case, the adjusting ring 107 is provided with a detent, so that each brightness level can be quickly detected and adjusted. The gradation of the brightness can look like this, for example:

Stage 1 to 3:

very dark, to use the visor 10 with night vision goggles;

Level 4 to 6:

relatively dark, for use of the visor 10 in low light conditions;

Stage 7 to 11:

bright, to use the visor 10 in bright daylight or against bright backgrounds.

In order to keep the dimensions of the housing 20 low, the projection device 40 and the coupling optics 60 in the in the Fig. 1 to 3 shown embodiment, wherein the coupling optics 60 is located on the optical axis A between the viewing aperture 21 and the viewing aperture 22, while the projection device 40 is arranged with the collimator optics 41 and the light-emitting diode 51 in parallel below.

In order to image the image of the target mark Z generated by the projection device 40 onto the coupling optics 60, a fully reflecting mirror 42 is provided in the front of the housing arranged. This is fixed by a cover 48 in the recess 30 in the housing 20. A sealing ring 49 seals the lid 48 to the outside. One recognizes in Fig. 3 in that the mirror 42 is arranged at an angle of 45 ° to the optical axis A. So that the light from the light-emitting diode 51 can hit the beam splitter 68 of the coupling optics 60 unhindered, a passage 57 is formed in the housing 20 in the region of the spherical shell 36. The tube sleeve 69 is correspondingly provided with an opening 58.

In order to prevent the target mark Z or other parts of the light generated by the light-emitting diode 51 generated by the projection device 40 and reflected by the coupling optical system 60 in the beam path along the optical axis A from being viewed within the coupling-in optical system 60 a means 61 is provided, through which the target Z is coupled into the beam path along the optical axis A only in the direction R towards the viewing opening 21. This means 61 is a polarizing beam splitter layer 61, which is arranged or formed between the boundary surfaces 65 of the prisms 63, 64.

The polarizing beam splitter layer 61 is, for example, a MacNeille polarizer, which is designed so that the light reflected by the mirror 42 and incident on the beam splitter layer 61 at 45 ° incidence angle for a narrow wavelength range of e.g. about 50 nm is separated into s- and p-polarized light. The light reflected from the interfaces 65 of the coupling optics 60 is thereby reflected back into itself and reflected back to the light source 51. It can therefore not leave the visor 10 in the direction of the viewing opening 22. The target Z is thus not visible from the outside through the view opening 22, not even with a night vision device. The observation beam path along the optical axis A is influenced only slightly, so that the view through the visor 10 is hardly affected. The shooter sees therefore as usual the object and the mirrored target Z.

The arrangement of the beam splitter layer 61 between the prisms 63, 64 no additional components are necessary. The means 61 is therefore part of the coupling optics 60 and thus a part of the assembly.

In a further embodiment, it is possible to provide a further polarization filter which filters out part of the polarized light even before it hits the beam splitter layer 61. Such an additional polarization filter is expediently located between the beam splitter 69 and the mirror 42.

An in Fig. 4 illustrated alternative embodiment provides that the means 62 is formed such that the light reflected by the coupling optics 60 in the direction of the viewing opening 22 light the reflex sight 10 can not leave. This means 62 is a band stop filter, which is arranged between the coupling optics 60 and the viewing opening 22. It is designed such that the wavelength range emitted by the light source 50 is masked out after reflection by the beam splitter 68 in the direction of the viewing opening 22. The reticle is thus no longer visible from the object, because the light of the luminous target mark can not penetrate the band stop filter. The wavelength of the light source and the formation of the band-stop filter are coordinated so that the view through the visor is only slightly affected, in particular, that results in an insignificant or hardly disturbing shift in the color impression. However, it is important that the wavelengths of the light source are filtered out by the band stop filter, as a result of which the sight can not be detected by a sighted object or by a night vision device.

As Fig. 4 shows the band stop filter 62 is applied to the front surface 66 of the beam splitter 68 of the coupling optics 60. It is therefore part of the coupling optics 60 and thus a part of this assembly.

As Fig. 4 Furthermore, the projection device 40 is arranged above the optical axis A and thus above the coupling optics 60. The optical axis A thus moves closer to the weapon, which may be advantageous for certain types of weapons or for certain tasks.

A further embodiment (not shown) provides that the polarizing beam splitter layer 61 and the band stop filter 62 are combined, for example by arranging both means 61, 62 on or in the beam splitter 68.

In the embodiment of Fig. 5 the coupling optics 60 is rigidly fixed in the housing 20, while the projection device 40 is designed to be pivotable relative to the optical axis A. For this purpose, the tube sleeve 43 is provided at the end with a spherical outer contour 71 which is mounted in a form-fitting manner in a corresponding spherical shell 36 in the housing 20. Outer contour 71 and spherical shell 36 form a universal joint, so that the projection device 40 is pivotally mounted in at least two spatial directions. The adjusting towers 80, 90 engage with their drive pins 85 at the end on the tube sleeve 43 and on the cylindrical funnel 52 of the light source 50.

The light of the light source 50 is collimated by the projection system 40 and its collimation optics 41 and projected via the mirror 42 onto the beam splitter 68 of the coupling optics 60. This reflects the light as a target Z in the direction of the eye of a sighting through the inspection opening 21 shooter. The target Z appears through the optics 21, 68, 22 as sharply defined red dot in the target plane. Between the boundary surfaces 65 of the two prisms 63, 64 of the beam splitter 68 in the coupling optics 60, the polarizing beam splitter layer 61 is introduced. This ensures that the target Z is only visible from the viewing opening 21.

The arrangement of the sighting device 10 of Fig. 5 may additionally or alternatively also be equipped with a band-stop filter 62.

About one in the Fig. 4 and 5 Adjustment tower 100, not shown, the brightness of the light emitting diode 51 can be adjusted to achieve a good contrast between field of view and reticle in unfavorable lighting conditions.

In addition, a spectral splitter layer can be incorporated into the projection device 40 and / or the coupling-in optical system 60, which results in a red-blue contrast for the eye.

• ■ Das Visier 10 kann bei sehr hellen Lichtverhältnissen verwendet werden, weil die Helligkeit der Lichtquelle 50 entsprechend eingestellt werden kann.
• ■ Das Visier 10 kann mit einer Nachtsichtausrüstung verwendet werden, weil die Helligkeit der Lichtquelle 50 entsprechend dunkel geregelt werden kann.
• ■ Das Visier 10 bietet für den Schützen eine außerordentlich hohe Sicherheit, weil von der Objektseite her keine Signatur der Lichtquelle erkennbar ist, nicht einmal mit einem Nachtsichtgerät.
• ■ das Visier 10 ist für eine Serienfertigung geeignet, weil sämtliche Komponenten als Baugruppen vorgefertigt werden und anschließend nur noch im Gehäuse 20 montiert werden müssen. Die einzelnen Baugruppen erfüllen höchste Anforderungen an Präzision und Robustheit, was sich insgesamt günstig auf die Handhabung und den Einsatz des Reflexvisiers 10 auswirkt.

Overall, the Reflexvisier invention 10 fulfilled the following important requirements:

• ■ The visor 10 can be used in very bright lighting conditions, because the brightness of the light source 50 can be adjusted accordingly.
• ■ The visor 10 can be used with night-vision equipment because the brightness of the light source 50 can be controlled to be correspondingly dark.
• ■ The visor 10 offers an extremely high level of security for the shooter because no signature of the light source can be seen from the object side, not even with a night vision device.
• ■ The visor 10 is suitable for mass production because all components are prefabricated as assemblies and then only need to be mounted in the housing 20. The individual assemblies meet the highest demands on precision and robustness, which has a favorable overall effect on the handling and use of the reflex sight 10.

The invention is not limited to one of the above-described embodiments, but can be modified in many ways. Thus, for example, the coupling optics 60 may comprise a semitransparent mirror which carries the polarizing beam splitter layer 61 as an interface. However, the beam splitter 68 of the coupling optics 60 can also be formed as a simple prism, wherein the polarizing beam splitter layer 61 is also applied here as a boundary layer on the prism. Additionally or alternatively, a band stop filter can also be used here.

In yet another embodiment, the projection device 40 and the coupling optics 60 may form a common optic, for example in the form of a double or multiple lens arrangement with a partially reflecting intermediate layer.

In addition to the electric light source 50, natural light can be introduced into the housing and fed to the projection device 40. As a result, energy can be saved, for example, with sufficient daylight, so that the battery 103 has to be changed less frequently.

The mounting recess 23 on the housing 20 may also be formed in a quick-release connection 17, which is screwed by means of screws 18 on the housing 20. Again, the housing 20 can be mounted quickly and conveniently without tools on a weapon.

Yet another embodiment (not shown) provides that the projection device 40 and the coupling optics 50 are arranged horizontally in a plane next to each other. As a result, the optical axis A is relatively close to the weapon and the housing 20 is flat overall.

Furthermore, it is possible to apply an additional reticle on the beamsplitter block 68, e.g. in the form of an unlit reticule to further increase the variability of the reflex sight 10. Or it is reflected an additional reticle in the field of view.

Any provided protective caps, protective cover, elevation caps or the lid for the battery compartment are captive, ie they remain after removal connected to the housing 20. You can not get lost.
It can be seen that a reflex sight 10 has a housing 20 which has an insight opening 21 and an observation opening 22 along an optical axis A. It also has a Projection device 40, which images the light generated by a light source 50 as a target Z, and a coupling optics 60, which couples the imaged by the projection device 40 target Z in the beam path along the optical axis A. In order to prevent the target mark Z being visible from the targeted object, the invention provides that at least one means 61, 62 is provided, by means of which the target mark Z imaged by the projection device 40 is substantially visible only from the viewing aperture 21 , The means 61, 62 may be a polarizing beam splitter layer 61, which is formed as a boundary layer 65 between two prisms 63, 64. Or one uses a band stop filter 62, which is arranged between the coupling optics 60 and the viewing opening 22 and prevents that light reflected by the coupling optics 60 in the direction of the viewing opening 22 blocks or filters out. In order to achieve a cost effective and easy to manufacture structure of the sight 10, the components 40, 50, 60, 70, 80, 90, 100 of the visor 10 are formed as prefabricated assemblies that can be mounted quickly and accurately in the housing 20.

All of the claims, the description and the drawings resulting features and advantages, including design details, spatial arrangements and method steps may be essential to the invention both in itself and in various combinations.

LIST OF REFERENCE NUMBERS

A

optical axis

R

direction

Z

target

10

reflex sight

12

pane

13

screw ring

14

screw ring

17

Quick-release connection

18

screw

20

casing

21

viewing opening

22

Outlook opening

23

recess

24

recess

26

recess

28

recess

29

recess

30

recess

31

recess

32

recess

33

recess

34

paragraph

35

step

36

spherical shell

40

projection device

41

collimating optics

42

mirror

43

tubular sleeve

44

thread

45

cemented component

46

single lens

47

collar

48

cover

49

seal

50

light source

51

led

52

cylindrical funnel

53

thread

55

cover

60

coupling optics

61

polarizer

62

Band stop filter

63, 64

prism

65

interface

66, 67

plane-parallel surface

68

beamsplitter

69

tubular sleeve

70

universal joint

71

spherical outer contour

72

conical shaft

73

bearing ring

75

groove

78

edge

80

Verstellturm

81

adjusting cap

82

ring saddle

83

threaded piece

84

threaded hole

85

pressure pin

86

locking ring

87

external thread

90

Verstellturm

100

Verstellturm

101

saddle

102

electronic control

103

Battery / Battery

105

flat Head

106

external thread

107

collar

108

cover

Claims (15)

A reflex sight (10) comprising a housing (20) having along an optical axis (A) an inspection opening (21) and a viewing opening (22), with projection means (40) for detecting the light generated by a light source (50) A target (Z) maps, and with a coupling optics (60) which couples the projection (40) imaged target mark (Z) in the beam path along the optical axis (A), characterized in that at least one means (61, 62 ) is provided, through which the target mark (Z) imaged by the projection device (40) is substantially visible only from the viewing opening (21). Reflex sight according to claim 1, characterized in that one of the means (61) is formed such that the target mark (Z) is coupled into the beam path along the optical axis (A) only in one direction (R) towards the viewing opening (21) , Reflex sight according to claim 1 or 2, characterized in that the means (61) in the region of the coupling optics (60) is formed. Reflex sight according to one of claims 1 to 3, characterized in that the means (61) is a part of the coupling optics (60). Reflex sight according to one of claims 1 to 4, characterized in that the means is a polarizing beam splitter layer (61). A reflex sight according to claim 5, characterized in that the polarizing beam splitter layer (61) is a MacNeille polarizer. Reflex sight according to one of Claims 1 to 6, characterized in that one of the means (62) is designed in such a way that the light reflected by the coupling optics (60) in the direction of the viewing opening (22) can not leave the reflex sight (10). Reflex sight according to claim 7, characterized in that the means (62) between the coupling optics (60) and the viewing opening (22) is arranged. Reflex sight according to one of Claims 7 to 8, characterized in that one of the means (62) is a band stop filter (62) which blocks out the wavelength range emitted by the light source (50). Reflex sight according to one of claims 1 to 9, characterized in that the position of the target mark (Z) relative to the optical axis (A) is adjustable. Reflex sight according to one of claims 1 to 10, characterized in that the position of the target mark (Z) is horizontally and / or vertically adjustable. Reflex sight according to one of claims 1 to 11, characterized in that the coupling optics (60) relative to the housing (20) is designed to be pivotable. Reflex sight according to claim 12, characterized in that the coupling optics (60) is mounted in a universal joint (70). Reflex sight according to one of claims 1 to 13, characterized in that the projection device (40) relative to the optical axis (A) is designed to be pivotable. Reflex sight according to claim 14, characterized in that the projection device (40) is mounted in a universal joint (70).

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