DE102012009990B4 - Binocular far-optical device - Google Patents

Abstract

Binocular long-range optical device (1) with - two tubes (3, 5) each - having an eyepiece (7, 8) and - an objective (9, 10), and - three spaced apart one behind the other along the tubes (3, 5) Bridges (11, 12, 13), of which at least the second and third bridges (12, 13) counted in the direction from the eyepiece (7, 8) to the objective (9, 10) are designed as kink bridges and which the two tubes (3 , 5) at a distance from one another, the buckling bridges having aligned buckling axes (124, 134) running in the same direction, the space between the second and third bridges forming a passage around a tube (3, 5) at the passage to be able to grip with the hand.

Description

The invention relates generally to binocular long-range optical devices, in particular binocular binoculars. In particular, the invention relates to binocular binoculars with bending axis and focusing device. More particularly, the invention relates to such binocular far-optical devices in which two optical channels are captured in optical tubes, which are connected via bridges, so that forms a common bending axis, and the eye distance of the observer can be adjusted by changing the bending angle of the buckling bridge. The remote optical device according to the invention is equipped with a focusing knob, which is attached to one of the bridges so that it is easily accessible with both hands.

In conventional binoculars, the eyepieces are held in their own tubes, which are moved along the binoculars. There is a thread between the eyepiece and the binocular tube, so that the eyepiece is displaced along the optical axis when the eyepiece tube is rotated.

An outer toothing is connected to the centrally arranged focus knob, so that upon rotation of the focus knob, the eyepiece tubes are rotated.

In this configuration, rotation of the bridges about the kink axis results in rotational movement of one of the two eyepiece tubes, thereby shifting the relative position of the eyepieces relative to one another. An application of such a pair of binoculars is therefore difficult.

In another embodiment, an elongate hollow bridge is used between both optical tubes. In this hollow bridge, the movement of the focus knob is transferred to a linear movement of focusing within the optical tubes via a mechanical coupling. Such an arrangement is from the DE 39 29 825 C1 known.

The elongated shape of the optical tubes can not be completely covered by hand, so that a secure grip of the device is deteriorated.

The binocular of the DE 23 16 955 B2 has a one or two-hinged connecting bridge between the two tubes. Integrated into the connecting bridge is an operating element of a focusing device, which acts in the same way on the optical parts of both tubes serving for focusing.

The binocular binoculars of JP 2009175498 A has two spaced bridges. The focusing device is integrated into the bridge closer to the two eyepieces.

The DE 20 2012 100 835 U1 shows a pair of binoculars with a bridge, in the middle of which is the control element of the focusing device.

In the binoculars of US 5,074,652 A the operating element of the focusing device is arranged between two bridges.

In the US 6,266,185 B1 A binocular binoculars is proposed in which both optical tubes are connected by two short bridges which are placed along the tubes at a certain distance. This results in a penetration between the bridges, in the area of which the tubes can be covered with several fingers.

The focus knob is attached to the outer side of one of the two bridges. The movement of the focus knob is transmitted through this bridge, which is hollow, via a mechanical coupling to the focusing focusers in focus. For this purpose, it is necessary to use a very compact and thus complex transmission mechanism with the aim of keeping the size of the bridge used as small as possible. Nevertheless, in practice, a width of 15 mm is not exceeded.

This has two disadvantages. With a limited length of the far-optical device, the width of the bridge also limits the size of the penetration. One puts for ones like in US 6,266,185 B1 described binoculars have a length of about 160 mm and mechanically meaningful positions of the bridges and a bridge width of more than 15 mm on the basis, there is a penetration of only about 60 mm. But a hand can be wider, so that only with a maximum of three fingers through the penetration can actually be used. Thus, the benefits of such penetration can be limited.

Even more serious is the fact that the bridge through which the mechanical coupling between focus knob and focussing member passes separates the area of penetration from the focus knob so that they are more than 15 mm apart. If a user now grips the binoculars during the observation, he is forced to hold the binoculars with the middle, ring finger and little finger in the area of the penetration. In order to use the index finger with the index finger he has to spread it at least 15 mm (the width of the bridge that separates the focus knob from his other fingers) to reach the focus knob. However, such a splayed posture is unpleasant.

The object is therefore to provide a binocular long-range optical device that is ergonomic and easy to use. It should be achieved that during observation and transport in an intuitive way the tubes can be covered with the whole hand and at the same time a Fokussierknopf can be used to adjust the distance to the object via an easily accessible place.

The invention can be applied to all types of binoculars, both with rooftop and Porro or lens reversing system and with inside and outside focusing.

According to one aspect of the invention, a binocular long-range optical device with two tubes is provided, each having an eyepiece and a lens, and three spaced behind the tubes along the tubes bridges, of which at least the second and the third bridge counted in the direction of the eyepiece to the lens as buckling bridges are formed and which hold the two tubes at a distance to each other, wherein the buckling bridges have aligned, extending in the same direction buckling axes. The space between the second and the third bridge in this case forms a penetration in order to be able to embrace a tube on the passage by hand.

If, unlike fixed-focus binoculars, a transmission mechanism is provided, then again a focus knob is arranged between the first, closest to the eyepiece and the second bridge and via a transmission mechanism with at least a first focusing element in a tube and at least a second focusing element connected in the other tube, that by a rotating operation of the focus knob, the focal length of the tubes is adjustable, wherein the transmission mechanism has two transmission arms on or in the first bridge, which are each coupled to one of the focusing and movable by rotation of the focus knob to the Adjust focusing elements.

The focus knob is accordingly on the axis formed by the two buckling elements on the side of the second bridge, which is outside the penetration, so on the eyepiece side of the eyepiece-side bridge. In order to reduce both bridges in their extent along the tubes, so the width of the bridges to a minimum, none of these bridges a mechanical drive from the focus knob to focuser out.

The closer to the lens arranged second bridge has a smaller width than the nearer to the eyepiece arranged first bridge.

For the first bridge, a width of at most 15 millimeters is preferred. For the second bridge, a width of at most 6 millimeters is preferred.

Through the third bridge, a mechanical coupling is performed, which transmits a movement on the focus knob on the focusing so that a change in the bending angle on the axis formed does not change the position of the focusing. By this arrangement, the expansion of the opening along the tubes is maximized, so that a penetration of over 60 mm, preferably 70 mm can be generated. This is sufficient to cover a tube with all four fingers.

At the same time in the invention, the distance between the opening and the focus knob is reduced to less than 5 mm, so that the focus knob can be operated without a spreading of the index finger with this.

However, the narrow bridge prevents involuntary movement of the focus knob during transport or observation, since only by a deliberate movement of the finger of the button can be moved.

The button is mechanically protected between the bridges used, so that the far-optical device is characterized by a high degree of robustness.

The knob in this configuration can easily be mounted on an axis on both bridges that enclose it. Such attachment is robust and simple, and thus cost-effective.

Ideally, the lens-side edge of the second bridge is close to the center of gravity of the far-optical device. This position allows the user to place his thumb under the far-optical device in the center of gravity. At the same time then lies the index finger comfortably on the focus button. As a result, an optimally quiet position of the far-optical device is reached in the hand. In particular, it is favorable if the center of gravity of the device is removed from the objective-side edge of the second bridge by at most one fifth, preferably at most one sixth of the length measured from the eyepiece-side to the objective-side end of the device.

It offers itself in a further development of the invention optionally to install an additional button, which causes a relative movement of the focusing in both tubes. This one will
for adjusting the difference of the ametropia of the user, in particular for Diopter compensation used. The knob engages in the mechanical coupling between focus knob and focusing element so that a relative movement between the two focusing elements arises. Accordingly, according to this embodiment of the invention, a Dioptrienausgleichsknopf is provided in addition to the focus knob, wherein the Dioptrienausgleichsknopf with the transmission mechanism is coupled so that a relative movement of the first and second focusing element in the longitudinal direction of the tubes is effected during a rotating operation of the Dioptrienausgleichsknopfs.

This diopter compensation button is preferably mounted on the eyepiece side of the eyepiece-side bridge, so that this action can be generated directly.

At this point, the button is protected against misuse while wearing and watching and can still be adjusted directly with a finger during observation. For this purpose, although the finger must now be spread apart; However, this is less problematic because only once the compensation of defective vision must be made.

An advantage of this configuration is that the diopter compensation can be performed at any time during the observation, without having to change a combination button between focusing and diopter compensation, which otherwise complicates the use of a binocular.

Also, a position of the diopter button on the lens-side side of the middle bridge in the case of the first embodiment, or on the lens-side bridge in the second embodiment of the invention is possible.

In accordance with the abovementioned variants of the position of the diopter compensation button, this is therefore arranged on the eyepiece side on the first bridge or on the object side on the second articulated bridge.

Furthermore, it is favorable if the rotation of the focus knob is decoupled from a rotation of the bending axis. For this purpose, the invention provides that at least one of the transmission arms has a decoupling device, which is fixed in the direction perpendicular to the threaded axis of the threaded element, but fixed in the direction along the threaded axis, so that a displacement along the threaded axis of the threaded element transmitted through the decoupling element becomes.

The invention will be explained in more detail by means of embodiments and with reference to the accompanying drawings. The same reference numbers refer to the same or corresponding elements.

Show it:

1 a schematic structure of a binocular far-optical device with three bridges,

2 a variant of in 1 shown embodiment with two bridges,

three a further education in 1 or 2 shown embodiments with diopter compensation,

4 a variant of in three illustrated embodiment, in which different translations are made possible during the rotation of the Dioptrienausgleichsknopfs and the focus knob,

5 a variant of in 1 illustrated embodiment, in which the focus knob is equipped with an internal thread for displacement of the transfer arms,

6 as the most preferred embodiment, a development of the embodiment according to 5 with diopter compensation, and

7 Details of in 6 shown embodiment.

1 shows a first basic form of a binocular far-optical device according to the invention 1 , The binocular far-optical device 1 has two tubes three . 5 on, in which the optical elements are housed.

The optical elements each comprise an eyepiece 7 . 8th , as well as a lens 9 . 10 , There may be other optical components, such as an in 1 only shown schematically and known in the art reversing system 50 . 51 to be available. Such a reversal system may include a roof prism or a Porro prism. Further constructions of reversing systems are known to the person skilled in the art and can be incorporated in a binocular far-optical device according to the invention 1 be implemented. Another optical element is still a focusing element 15 , especially 17 in the form of a lens assembly or cemented member in each of the tubes three . 5 arranged, with which the focal length of the respective lens by longitudinal displacement of the focusing element 15 . 17 is customizable. A focusing element does not necessarily designate a focusing optical element. Rather, this term refers to the fact that by changing this element the Focusing the entire optical system of a tube is changed.

By moving the focusing lens, which may be formed as a lens assembly, preferably also as a cemented element, in particular more generally of the respective focusing element 15 . 17 along the optical axis so the object distance is set.

So are also in the in 1 shown example, the focusing elements 15 . 17 formed as diverging lenses or diverging lens assemblies, in particular defocusing lenses with negative focal length.

Overall, the in 1 embodiment of the invention shown three bridges, a first bridge 11 , a second bridge 12 and a third bridge 13 between the tubes three . 5 on. At the in 1 shown embodiment are on each tube three . 5 while at least two arms attached to each other by joints 123 . 133 are connected and the second bridge 12 and the third bridge 13 form. These bridges connect the two tubes three . 5 and keep them at a distance from each other. The first bridge has a width of 15 to 30 mm in the axial direction of the tubes, and preferably a width of approximately 22 mm. The second bridge has in the axial direction of the tubes a width of 6 to 10 mm and preferably a width of about 8 mm, whereas the third bridge in the axial direction of the tubes has a width of 8 to 12 mm and preferably a width of about 10 mm has. The joints 123 . 133 are shaped so that a common imaginary bend axis forms around the two tubes three . 5 can be turned. This rotation changes the distance of the eyepieces 7 . 8th so that the eye relief of the user can be adjusted.

The area between the second and third bridge 12 . 13 makes a penetration 30 , At this penetration 30 the user can choose between the tubes three . 5 pass through and so one of the tubes three . 5 to embrace the hand position. Accordingly, the in 1 embodiment shown, regardless of the training or the presence of an adjustment three in a row along the tubes three . 5 spaced bridges 11 . 12 . 13 on, at least the second and the third bridge 12 . 13 counted in the direction of the eyepiece 7 . 8th to the lens 9 . 10 are designed as buckling bridges and which the two tubes three . 5 keep at a distance to each other, wherein the buckling bridges are aligned, extending in the same direction buckling axes 124 . 134 and wherein the gap between the second and the third bridge 12 . 13 forms a penetration to a tube three . 5 to be able to reach around the penetration with the hand. In other words, in addition to the first and second bridge 11 . 12 a third, designed as a bridge bridge 13 provided, which along the Tubuslängsrichtung opposite the second, also designed as a buckling bridge 12 to the lens 9 . 10 arranged offset, and wherein between the second and the third bridge 12 . 13 a penetration 30 is formed.

Based on 1 It is also apparent that the closer to the lens 9 . 10 arranged as a buckling bridge formed second bridge 12 a smaller width than the closer to the eyepiece arranged first bridge 11 having. This is particularly due to the inventive arrangement of the transmission mechanism in the first bridge 11 allows. Because none of the penetration 30 limiting bridges 12 . 13 Components of the transfer mechanism may have both bridges 12 . 13 kept very narrow and thus the length of the penetration 30 be maximized.

The second bridge 12 can in particular be designed so that there is a width 31 the bridge 12 of less than 10 mm. This allows the width of the bridges 2 and three formed penetration 30 be extended to over 60 mm. In particular, the designed as a buckling bridge second bridge 12 even only one width 31 of not more than 6 millimeters.

The next to the second bridge 12 in the direction of the lens subsequent penetration 30 along which the tubes three . 5 connectionless run next to each other, so that a tube three . 5 can be encompassed by hand, may preferably even have a length of at least 60 millimeters measured along the Tubuslängsrichtung.

The position of the bridge 2 is advantageously chosen so that it is close to the location of the center of gravity 35 along the bending axis of the binocular binoculars. The user now holds the binocular far-optical device 1 intuitive with the thumb below the center of gravity 35 if he has the focus button 20 wants to serve. This ensures a very quiet and stable posture of the binoculars.

The focus 35 does not necessarily have to, as in 1 shown exactly in the area of the second bridge 12 lie. Also a slight deviation of the position of the center of gravity 35 along the longitudinal direction of the far-optical device 1 , in particular along the longitudinal direction of the tubes three . 5 still provides a good operability with the above advantages. It is generally preferred that the focus 35 1 means at most one fifth of the length measured from the eyepiece end to the objective end the device 1 from the lens-side edge 125 the second bridge 12 is removed.

Between both tubes three . 5 extends next to the bridges 12 and 13 also another, here as the first bridge 11 designated bridge, which is designed in the illustrated embodiment as a hollow body.

Through the hollow body, a first threaded element extends 26 in the form of a rotatable threaded rod, which passes through the focus knob 20 between the first bridge 11 and second bridge 12 is turned. The rotation of the first threaded element 26 causes a movement of the transmission mechanism along the threaded rod. The transmission mechanism comprises two transmission arms 22 . 24 in or at the first bridge 11 , which at one end in the tubes three . 5 each with a focusing element 15 . 17 are connected, as well as at least one with the first threaded member 26 cooperating and with the transmission arms 22 . 24 connected or arranged on this second threaded element 28 , At one through the focus knob 20 mediated rotation of the first threaded element 26 this rotation becomes a translation of the second threaded element 28 translated.

The transmission mechanism is fixed to the focus bars, in particular the transmission arms 22 . 24 connected, so that this movement in the form of a translation in a movement of the transfer arms 22 . 24 and thus also the focusing elements 15 . 17 along the optical axis transmits. This simple construction also allows a small width of the first bridge 11 , In particular, the width of the first bridge 11 be reduced in this way to 18 millimeters or less.

To easily rotate the binocular halves, in particular the tubes three . 5 In order to enable the buckling bridge, in the invention, the transmission mechanism in one of the two tubes three . 5 decoupled with respect to this rotation.

This is accomplished by, for example, the side of the transfer arm facing the tube 24 that actually from the threaded element to the tube 5 leads, in the direction of the other tube three is extended. This extension receives a groove, which has a circular arc whose center with the bending axis 124 matches.

The actual transfer mechanism to the tube three is formed at this point as a spring, so that they can attack at any angle about the bending axis of the groove described above.

Of course, other types of decoupling are conceivable; in particular a reversal of the tongue and groove system; Engaging in guide grooves; Joints etc.

Typically, such decoupling devices apply 23 on at least one of the transmission arms 22 . 24 in that they are in the direction perpendicular to the thread axis of the first or second threaded element 26 . 28 movable, in the direction along the thread axis but is fixed, allowing a displacement along the threaded axis of the threaded element 26 is transmitted through the decoupling element on the transfer arm. On the other hand, there is a movement of the tubes three . 5 about the bending axis by the mobility of the decoupling device 23 not perpendicular to the thread axis on the transfer arm 22 taught.

2 shows a variant of in 1 illustrated embodiment, in which the arms 111 . 112 the first bridge 11 with a joint 113 are connected. The bending axes 114 . 124 of the joints 113 . 123 the two bridges 11 and 12 form a common bending axis, in particular aligned with each other. Also in this embodiment of the invention is a focus knob 20 rotatable between the two bridges 11 . 12 held, with the transfer mechanism through the closer to the eyepieces 7 . 8th located first bridge 11 guided or arranged at this.

Unlike the in 1 However, here shown variant is not a third bridge 13 intended. Likewise, however, closes again to the second bridge in the direction of the eyepieces 7 . 8th to the lenses 9 . 10 seen an engagement reef 30 on, with the difference that this one is not through a third bridge 13 is limited.

three shows a training in the 1 or 2 shown embodiments. This development is generally based on having a diopter compensation button 40 in addition to the focus knob 20 is provided, wherein the Dioptrienausgleichsknopf 40 with the transmission mechanism 21 coupled so that upon a rotary operation of the diopter compensation button 40 a relative movement of the first to the second focusing element 15 . 17 in the longitudinal direction of the tubes three . 5 , in particular along the optical axes of the tubes three . 5 is effected. The special technical implementation according to three but is only an example. As further shown in the illustrated embodiment, the focus knob is 20 and the diopter compensation button 40 not mounted on the same side of a bridge. Rather, a bridge between the two adjusting elements is arranged. This is convenient for usability, to avoid inadvertently when operating instead of the focus knob 20 the diopter compensation button 40 or vice versa.

At the in three In this case, an embodiment which is preferred in terms of operability is shown, in which the diopter compensation button 40 eyepiece on the first bridge 11 is arranged.

This placement of the diopter compensation button 40 is ergonomically very cheap. He can be operated with the index finger of both hands. The operation can be done easily during observation. At the same time is the button 40 secured against accidental rotation, as it is located at some distance from the normal hand position. An objective-side arrangement on the second bridge 12 but is also possible.

In particular, it is also convenient for simplifying the transmission mechanism, the diopter compensation button 40 coaxial with the focus knob 20 to install.

To a relative movement of the two focusing elements 15 . 17 along the optical axes by rotation of the diopter compensation button 40 to enable in this embodiment, two with the first threaded member 26 cooperating and with the transmission arms 22 . 24 connected or arranged on this second threaded elements 28 . 29 intended. In each case one of the threaded elements 28 . 29 on one of the transmission arms 22 . 24 arranged. By turning the focus knob 20 Both are threaded elements 28 and 29 and thus also the transmission arms 22 . 24 and the focusing elements attached thereto 15 . 17 axially along the threaded axis of the first threaded member 26 emotional. The second threaded elements 28 . 29 and the first threaded element 26 are, as the basis of the three seen coaxially arranged. In other words, their threaded axes are coaxial.

One of the threaded elements 28 . 29 is by an eccentric driver 41 with the diopter compensation button 40 connected and secured against rotation, so that it turns when turning the first threaded element 26 moved along the thread axis. At the in three shown embodiment, this is the transfer arm 22 , on which also the decoupling device 23 is available.

On the other hand, the Dioptrienausgleichsknopf 40 rotated, so the eccentric driver rotates 41 the second threaded element 28 around the thread axis of the first threaded element 26 so that the second threaded element 28 and thus also the transfer arm 22 along the thread axis of the first threaded element 26 is moved. Because the other second threaded element 29 not by the eccentric driver 41 is moved, the transfer arm changes 24 with the second threaded element 29 its position when turning the diopter compensation button 41 Not. Consequently, the two transmission arms 22 . 24 and the associated focusing elements 15 . 17 moved relative to each other along the thread axis. This arrangement is particularly simple and space-saving, since here the decoupling device 23 performs a dual function. In addition to the decoupling of the transfer arm from a kinking movement, this allows the rotation of the second threaded element even when an operation of the Dioptrienausgleichsknopfs 28 around the thread axis of the first threaded element 26 ,

In this way, so by rotation of the diopter compensation button 40 a relative movement between the second threaded elements 28 . 29 and thus between the transmission arms 22 . 24 be generated. This results in a relative displacement of the focusing element 15 in the tube three relative to the focusing element 17 in the tube 5 , As a result, a difference in the ametropia of both eyes of the user to each other can be compensated. By turning the focus knob 20 continue to be both focusing elements 15 . 17 shot at the same time.

• – Es ist zumindest eine Brücke 11, 12 vorgesehen, welche zwei Arme 111, 112, 121, 122 aufweist, welche von einer der Tuben 3, 5 ausgehen und als Knickbrücke ausgebildet ist, deren vom Tubus 3, 5 entfernte Enden um eine Achse drehbar miteinander verbunden sind.
• – Ein Fokusknopf 20 ist drehbar an dieser Brücke oder einer weiteren Brücke 11, 12 zwischen den beiden Tuben 3, 5 gehaltert.
• – Ein erstes Gewindeelement 26 ist mit dem Fokusknopf 25 verbunden.
• – Es ist eine Übertragungsmechanik mit zwei Übertragungsarmen 22, 24 in oder an der einer Brücke 11, 12 vorgesehen, welche an einem Ende in den Tuben 3, 5 jeweils mit einem Fokussierelement 15, 17 verbunden sind.
• – Zwei zweite koaxial zum ersten Gewindeelement angeordnete Gewindeelemente 28, 29, jeweils eines an einem Übertragungsarm 22, 24 sind durch Drehen des Fokusknopfs 20 axial in Richtung entlang des ersten Gewindeelements 26 verschiebbar.
• – Zumindest einer der Übertragungsarme 22, 24 weist eine Entkopplungseinrichtung auf, welche in Richtung senkrecht zur Gewindeachse des ersten Gewindeelements 26 beweglich ist, in der Richtung entlang der Gewindeachse aber eine Verschiebung des zweiten Gewindeelements 28 entlang der Gewindeachse des Gewindeelements auf den Übertragungsarm vermittelt.
• – Eines der zweiten Gewindeelemente 28, 29 ist durch einen zusätzlich zum Fokusknopf 20 vorhandenen Dioptrienausgleichsknopf 40 um ein Gewinde drehbar, so dass dieses zweite Gewindeelement 28, 29 durch Drehung des Dioptrienausgleichsknopfs 40 unabhängig vom anderen zweiten Gewindeelement axial entlang des ersten Gewindeelements 26 bewegbar ist.

Without limitation to the arrangement of the focus knob or the transmission mechanism, the invention therefore also provides a binocular remote optical device 1 with two tubes three . 5 in front, each one eyepiece 7 . 8th and a lens 9 . 10 wherein the binocular far-optical device 1 having the following features:

• - It is at least a bridge 11 . 12 provided which two arms 111 . 112 . 121 . 122 which is from one of the tubes three . 5 go out and designed as a buckling bridge, whose from the tube three . 5 remote ends are rotatably connected to each other about an axis.
• - A focus button 20 is rotatable on this bridge or another bridge 11 . 12 between the two tubes three . 5 supported.
• - A first threaded element 26 is with the focus button 25 connected.
• - It is a transmission mechanism with two transmission arms 22 . 24 in or at the bridge 11 . 12 provided, which at one end in the tubes three . 5 each with a focusing element 15 . 17 are connected.
• - Two second coaxial with the first threaded element arranged threaded elements 28 . 29 , one each on a transfer arm 22 . 24 are by turning the focus knob 20 axially in the direction along the first threaded element 26 displaceable.
• - At least one of the transmission arms 22 . 24 has a decoupling device, which in the direction perpendicular to the threaded axis of the first threaded element 26 is movable, in the direction along the threaded axis but a displacement of the second threaded member 28 along the threaded axis of the threaded member on the transfer arm mediated.
• - One of the second threaded elements 28 . 29 is by one in addition to the focus knob 20 existing diopter compensation button 40 rotatable about a thread, leaving this second threaded element 28 . 29 by turning the diopter compensation button 40 independently of the other second threaded member axially along the first threaded member 26 is movable.

These features also apply to the further exemplary embodiments explained below 4 and 6 to.

4 shows a variant of in three illustrated embodiment. In this variant, the second threaded element 28 not directly on the first threaded element 26 but on a sleeve as a second threaded element 29 screwed, in turn, firmly with the transfer arm 24 to the tube 5 connected is.

Again, a rotation of the second threaded element leads 28 by means of the diopter adjustment button to a relative movement between the transmission arms 22 . 24 along the thread axis of the first threaded element 26 , By selecting the thread pitch can here the translation for a relative movement of the transmission arms upon rotation of the Dioptrienausgleichknopfs and the common displacement of both transmission arms 22 . 24 be selected differently for focusing.

In the embodiments explained so far, the first threaded element 26 as a threaded rod, in particular more generally formed as a threaded element with an external thread. 5 now shows a variant in which the first threaded element 26 an internal thread and a second threaded element 28 to which the transmission arms 22 . 24 are fixed, having a cooperating external thread. Now the focus button 20 rotated, the second, connected to the transmission arms threaded element in the form of a drive rod along the hollow axis of the first threaded element is translated and thus the focusing 15 . 17 postponed.

Strongly schematized and simplified in 5 also a ray path 60 shown, which shows how the rays emitted by an object through the lens 10 then the first focusing element 15 happen and through the reversal system 51 in an intermediate image plane 55 be imaged. From the intermediate image plane 55 allows the eyepiece 7 the contemplation of the by the inversion system 51 upright imaged intermediate image, which by means of the eyepiece 7 is to be considered enlarged.

Based on 6 and 7 will be a variant of in 4 illustrated embodiment, the corresponding to 5 a screw drive with a first threaded element 26 in the form of an internal thread on the focus knob 20 having.

6 shows the most preferred embodiment.

In the hollow axis in the focus knob 20 runs a sleeve, which is a second threaded element 28 forms and which is equipped with an external and internal thread.

By choosing the thread pitches of external and internal threads, the translation for the movement through the focus knob 20 and the relative movement through the diopter compensation button 40 be chosen independently.

The sleeve is fixed to the transfer arm 24 to the focusing element 17 connected and thus secured against rotation. Will the focus knob 20 rotated, therefore, moves the sleeve-shaped second threaded member 28 in the hollow axis along the thread axis. This movement is on the transfer arm and thus on the focusing element 17 transfer.

In the internal thread of this sleeve in turn is a second threaded element 29 screwed in the form of a rider.

A rotation of the threaded element 29 this moves along the sleeve-shaped second threaded element 28 , allowing a relative movement between the two second threaded elements 28 . 29 and thus between the two transmission arms 22 . 24 he follows.

This tab is part of a tongue and groove arrangement as a decoupling device 23 , This form of decoupler is again exemplary only.

As in the previous examples, the rider, in particular the second threaded element, can also be used here 29 exemplified by an eccentric driver to the Dioptrienausgleichsknopf 40 be coupled.

Shown in the picture is a coupling by means of a rod 43 having a non-cylindrical shape, e.g. B. has a rectangular, triangular shape or the shape of a semicircle, etc. This rod 43 dives into a matching hole in the second threaded element 29 one, leaving the second threaded element 29 can still be moved along the axis, but is rotationally secured by the non-cylindrical shape. The pole 43 turn is fixed to the diopter compensation button 40 coupled so that rotation of the diopter compensation button 40 a rotation of the rod 43 causes. This rotation is transmitted directly to the tab, which then along the axis in the sleeve-shaped second threaded element 28 is moved.

This embodiment of the transmission mechanism is advantageous, inter alia, because parts of the transmission mechanism are in the hollow axis of the focus knob 20 are shifted in, which allows a particularly compact design. In general, without limitation to the specific embodiment, as they are 6 shows, this development can with a sleeve-shaped second threaded member and an internal thread on the focus knob 20 be characterized by the following features:
The first threaded element 26 has an internal thread, which with an external thread of one of the second threaded elements 28 . 29 cooperates, this second threaded element 28 . 29 sleeve-shaped and in turn has an internal thread, which with an external thread of the other second threaded member 28 . 29 cooperates.

With reference to the embodiment described above, the following general developments of the invention result:
The first threaded element 26 is designed as an internal thread, with a second threaded element 28 having a cooperating with the internal thread external thread.

7 shows in addition details of a concrete execution, which on the in 6 is based schematically illustrated embodiment. From the binocular far-optical device 1 is only one area with the two bridges 11 and 12 shown. As based on the 7 can be seen, are in further development of the invention and without limitation to the specific embodiment, the threads of both second threaded elements 28 . 29 concentric within the hollow axis of the focus knob 20 arranged. More generally, the threads may be at least partially within the hollow axis of the focus knob 20 run.

It will be apparent to those skilled in the art that the invention is not limited to the exemplary embodiments shown in the figures, but may be varied within the scope of the following claims. In particular, the individual features of the claims, as well as the individual features of the illustrated embodiments can also be combined. So are the embodiments of the 4 . 5 and 6 shown with three bridges. These can, however, as well as the embodiments of the 2 and three be executed with only two bridges. Also, for example, instead of the axis 43 similar in the three and 4 shown, an eccentric driver 41 used to guide the respective threaded element through the diopter compensation button 40 to turn.

LIST OF REFERENCE NUMBERS

1

binocular far-optical device

3, 5

tube

7, 8

eyepiece

9, 10

lens

11

first bridge

12

second bridge

13

third bridge

15

first focusing element, lens assembly, in particular cemented element

17

second focusing element, lens assembly, in particular cemented element

20

focus knob

21

transmission mechanism

23

decoupling device

22, 24

transmission arm

26

first threaded element

28, 29

second threaded element

30

intervention grip

31

Width of the bridge 12

35

main emphasis

40

Diopter compensation button

41

Eccentric follower

43

pole

50

reversing system

51

reversing system

55

Intermediate image plane

60

beam path

111, 112

Arms of 11

113

Joint of 11

114

Kink axis of 11

121, 122

Arms of 12

131, 132

Arms of 13

123

Joint of 12

125

Objective edge of the second bridge 12

133

Joint of 13

124

Kink axis of 12

134

Kink axis of 13

Claims (13)

Binocular far-optical device ( 1 ) with - two tubes ( three . 5 ), each - an eyepiece ( 7 . 8th ) and - a lens ( 9 . 10 ), and three consecutively along the tubes ( three . 5 ) spaced bridges ( 11 . 12 . 13 ), of which at least the second and third bridges ( 12 . 13 ) counted in the direction of the eyepiece ( 7 . 8th ) to the lens ( 9 . 10 ) when Buckling bridges are formed and which the two tubes ( three . 5 ) keep at a distance to each other, wherein the buckling bridges are aligned, extending in the same direction buckling axes ( 124 . 134 ), wherein the gap between the second and the third bridge forms a passage to a tube ( three . 5 ) at the penetration by hand to be able to. Binocular far-optical device ( 1 ) according to the preceding claim, - wherein the space between the second ( 12 ) and the third bridge ( 13 ) a penetration ( 30 ) forms a tube ( three . 5 ) at the penetration ( 30 ) by hand, and with a focus knob ( 20 ) between the first ( 11 ), closest to the eyepiece ( 7 . 8th ) and the second bridge ( 12 ) and - via a transmission mechanism ( 21 ) with at least one first focusing element ( 15 ) in a tube ( three . 5 ) and at least one second focusing element ( 17 ) in the other tube ( three . 5 ) is connected by a rotating operation of the focus knob ( 20 ) the focal length of the tubes ( three . 5 ) is adjustable, whereby - the transmission mechanism ( 21 ) two transfer arms ( 22 . 24 ) at or in the first bridge ( 11 ), which in each case with one of the focusing elements ( 15 . 17 ) and by turning the focus knob ( 20 ) are movable to the focusing elements ( 15 . 17 ) to adjust. Binocular far-optical device ( 1 ) according to one of the preceding claims, wherein the closer to the objective second bridge ( 12 ) is designed as a buckling bridge and a smaller width than the closer to the eyepiece ( 7 . 8th ) arranged first bridge ( 11 ) having. Binocular far-optical device ( 1 ) according to one of the preceding claims, wherein the first bridge ( 11 ) has a width of at most 15 millimeters. Binocular far-optical device ( 1 ) according to one of the preceding claims, wherein the second bridge ( 12 ) is designed as a buckling bridge and has a width of at most 6 millimeters. Binocular far-optical device ( 1 ) according to one of the preceding claims, wherein the penetration ( 30 ) has a length of at least 60 millimeters measured along the Tubuslängsrichtung. Binocular far-optical device ( 1 ) Characterized according to one of the preceding claims, that the center of gravity ( 35 ) of the institution ( 1 ) by not more than one fifth of the length measured from the ocular to the objective end of the device ( 1 ) from the lens-side edge of the second bridge ( 12 ) is removed. Binocular far-optical device ( 1 ) according to one of the preceding claims, characterized by a diopter compensation button ( 40 ) in addition to the focus knob ( 20 ), with the diopter compensation button ( 40 ) with the transmission mechanism ( 21 ) is coupled in such a way that, when the diopter compensation button (11) is actuated in rotation, 40 ) a relative movement of the first to the second focusing element ( 15 . 17 ) in the longitudinal direction of the tubes ( three . 5 ) is effected. Binocular far-optical device ( 1 ) according to any one of the preceding claims, characterized in that the diopter compensation button on the eyepiece side at the first bridge ( 11 ) or on the lens side at the second bridge ( 12 ) is arranged. Binocular far-optical device ( 1 ) according to one of the preceding claims, characterized in that the transmission mechanism ( 21 ) two second coaxial with the first threaded element arranged threaded elements ( 28 . 29 ), one each on a transfer arm ( 22 . 24 ), which by turning the focus knob ( 20 ) axially in the direction along the first threaded element ( 26 ) are displaceable, wherein one of the second threaded elements ( 28 . 29 ) by the additional focus button ( 20 ) existing diopter compensation button ( 40 ) is rotatable about a thread, so that this second threaded element ( 28 . 29 ) by rotation of the Dioptrienausgleichsknopfs ( 40 ) independently of the other second threaded element ( 28 . 29 ) axially along the first threaded member ( 26 ) is movable. Binocular far-optical device ( 1 ) according to one of the preceding claims, characterized in that the first threaded element ( 26 ) has an internal thread, which with an external thread of one of the second threaded elements ( 28 . 29 ) cooperates, this second threaded element ( 28 . 29 ) is sleeve-shaped and in turn has an internal thread, which with an external thread of the other second threaded element ( 28 . 29 ) cooperates. Binocular far-optical device ( 1 ) according to one of the preceding claims, characterized in that the threads of both second threaded elements ( 28 . 29 ) concentric at least partially within the hollow axis of the focus knob ( 20 ) are arranged. Binocular far-optical device ( 1 ) according to one of the preceding claims, characterized in that at least one of the transmission arms ( 22 . 24 ) a decoupling device ( 23 ), which in the direction perpendicular to Thread axis of the threaded member is movable, in the direction along the threaded axis but fixed, so that a displacement along the threaded axis of the threaded member is transmitted through the decoupling element.

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