DE102014206209A1 - camera crane - Google Patents

Abstract

The invention relates to a camera crane with a base for fixing the camera crane and a camera support for receiving a camera. A crane arm connecting the base and the camera carrier is pivotable relative to the base about a first vertical axis. Relative to the crane arm, the camera carrier is pivotable about a second vertical axis. At least one first guide bar connecting the base to the camera carrier is spaced from the crane arm in a direction transverse to its longitudinal axis and the vertical axes. The first guide bar is pivoted to the base by means of a first vertical pivot axis extending parallel to the first vertical axis and to the camera carrier by means of a second vertical pivot axis extending parallel to the second vertical axis, the distance between the first vertical pivot axis and the first vertical axis and / or the distance between the second vertical pivot axis and the second vertical axis is variable.

Description

The invention relates to a camera crane with a base for fixing the camera crane, a camera support for receiving a camera and a crane arm connecting the base to the camera support.

To guide a camera, i. a film camera, a camera crane is often placed on a tripod, wherein at a remote from the tripod end of the camera crane, the camera is arranged in the direction of the scene to be recorded. When the camera crane is tiltable with respect to the tripod and the camera is firmly attached to the opposite end of the camera crane, the camera performs a pivotal movement when pivoting the camera crane about the tripod, in which the viewing direction of the camera performs a pivotal movement and thus a panoramic pan.

For improved alignment of the camera during horizontal or vertical pivoting of the camera, one or more guide rods may be arranged on the camera crane in addition to a crane arm supporting the camera, extending parallel to the longitudinal extent of the crane arm and horizontally and / or vertically spaced therefrom are. In this case, these guide rods are connected to the end of the camera crane carrying the camera in such a way that the recording direction of the camera is displaced in parallel during pivoting.

Thus, with the known camera cranes, it is only possible to perform a parallel shift of the field of view in the case of vertical swivel or a panorama swivel in the case of horizontal swiveling or a combination of these two swivels.

In view of this prior art, it is an object of the invention to provide a camera crane, which allows extended possibilities of image guidance.

This object is achieved according to the invention by a camera crane with the features specified in claim 1. Advantageous embodiments of the invention are specified in the respective subclaims, the following description and the drawings.

The camera crane according to the invention has a base for attachment of the camera crane, by means of which the camera crane can be attached to a tripod, for example. Furthermore, the camera crane has a camera carrier for receiving a camera, in particular a film camera. This is preferably releasably attached to the camera support. The base and the camera carrier are connected by a crane arm of desired length, wherein the crane arm is pivotable relative to the base about a first vertical axis. Thus, by pivoting the crane arm about the first vertical axis, the camera carrier can be rotated at a distance from the base to perform a pivoting of the camera. Furthermore, the camera carrier is pivotable relative to the camera arm about a second vertical axis. This makes it possible during the pivoting of the crane arm, the camera with the camera support to pivot about the second vertical axis so as to change the orientation of the camera, that is, the viewing direction of the camera relative to the crane arm during panning. According to the invention, a guide rod is additionally provided for this purpose, which connects the base to the camera carrier in addition to the crane arm and ensures that the camera carrier is pivoted about the second vertical axis relative to the crane arm during pivoting of the crane arm about the base in a defined manner, so that the Viewing the camera is guided in a desired defined manner during the pan. The guide bar is spaced from the crane arm in a direction transverse to its longitudinal axis or longitudinal extent and to said vertical axes. Furthermore, the guide rod is pivotably articulated to the base by means of a first vertical pivot axis extending parallel to the first vertical axis. In addition, the guide rod, preferably with the opposite axial end on the camera support by means of a second parallel to the second vertical axis extending vertical pivot axis pivotally articulated.

Due to the spacing of the crane arm and the guide rod, the base and the camera carrier together with the guide rod and the crane arm span in a plan view a quadrilateral, in particular a parallelogram, at whose corner points the two vertical axes and the two vertical pivot axes are located. The guide bar causes the camera carrier to be rotated relative to the crane arm as the crane arm pivots relative to the base. In order to allow adjustability of this pivoting movement, it is inventively provided that the distance between the first vertical pivot axis and the first vertical axis, that is, at the base, is variable. Alternatively or additionally, the distance between the second vertical pivot axis and the second vertical axis, that is to be changed on the camera support. By varying these distances, the dependence of the pivoting movement of the camera carrier relative to the crane arm is changed by the pivoting movement of the crane arm relative to the base, so that different automatic camera guides, which vary depending on the pivoting movement of the crane arm relative to the base, are selectable or adjustable.

Preferably, the crane arm and the guide rod lie in one plane, that is, the point of articulation of the guide rod on the base lies with the articulation point of the crane arm on the base substantially on a normal to the first pivot axis, that is preferably horizontally extending line, during the articulation point the guide rod on the camera carrier with the point of articulation of the crane arm on the camera carrier are substantially on a second line parallel to this line. Alternatively, however, the guide rod and the crane arm can also be arranged offset in the vertical direction, that is, the guide rod and the crane arm are then not only offset in a direction transverse to the vertical axes but also in the direction of the vertical axes to each other, the guide rod then in the direction the vertical axes is preferably offset parallel to the crane arm.

As described, the first guide rod serves to align the camera carrier and the camera arranged on the camera carrier during a pivotal movement of the crane arm about the first vertical axis. If the distance between the first vertical pivot axis and the first vertical axis and / or the distance between the second vertical pivot axis and the second vertical axis is changed, then the position or orientation of the first guide rod to the camera support, the base and the crane arm changes.

For example, if the distance between the first vertical pivot axis and the first vertical axis, hereinafter referred to as the first horizontal distance, equal to the distance between the second vertical pivot axis and the second vertical axis, hereinafter referred to as the second horizontal distance, the first guide rod and the Crane arm parallel to each other. During pivoting of the crane arm about the first vertical axis, the first horizontal distance and the second horizontal distance remain fixed. If now the crane arm is pivoted about the first vertical axis, the first guide rod is also pivoted about the first vertical pivot axis. During this pivoting about the vertical axes, the camera carrier is also pivoted via the guide rod. He thus changes its orientation relative to the crane arm. Since the first horizontal distance is equal to the second horizontal distance, the camera support pivots about the second vertical axis by the same angle that the crane arm pivots about the first vertical axis, i.e., the same distance. it does not change the angular position of the camera support with respect to the base during the pan. The field of view of the camera mounted on the camera carrier or the recording direction of the camera thus shifts in parallel while panning.

If, for example, the first horizontal distance is reduced compared to the second horizontal distance, that is to say the distance between the first vertical axis and the first vertical pivot axis at the base is reduced or the distance between the second vertical axis and the second vertical pivot axis at the camera carrier is increased, Thus, due to the connection of the base to the camera carrier via the crane arm and the first guide rod during a pivoting of the crane arm relative to the base, the angular position of the camera carrier relative to the base is changed. The field of view of the camera is thus not moved in parallel, but moves outward along an arc, i. the camera performs a panorama pan over a scene in front of it.

On the other hand, if the first horizontal distance is greater than the second horizontal distance, the resulting movement of the camera carrier is different from the two previously described arrangements due to the angled position between the first guide rod and the crane arm during a pivotal movement of the crane arm about the first vertical axis. In this arrangement, during pivoting of the crane arm, the camera carrier pivots about the first vertical axis along an arc with the field of view directed radially inward. Thus, a pan around a scene or an object can be guided around arcuate.

It is to be understood that the above-described vertical axes and vertical pivot axes do not necessarily have to extend in the vertical direction depending on the arrangement or use of the camera crane. In preferred use of the camera crane, said axes extend in the vertical direction. Therefore, the foregoing and following description refers to this preferred orientation. As horizontally described directions or horizontal orientations in the sense of the invention mean alignments normal to the vertical axes. If the vertical axes are deviating from the vertical direction, the described horizontal extension or orientation is also angled relative to the actual horizontal plane. The reference to the vertical axes, however, remains the same.

Preferably, furthermore, the crane arm is pivotable relative to the base about a first horizontal axis and the camera carrier is pivotable relative to the crane arm about a second horizontal axis, wherein the first guide rod or a second guide rod, connecting the base to the camera support, spaced from the crane arm in a direction transverse to its longitudinal axis and transverse to the horizontal axis, and at the base by means of a first horizontal pivot axis extending parallel to the first horizontal axis and parallel to the camera support by means of a second is pivoted to the horizontal axis extending to the second horizontal axis. The crane arm is thus not only horizontally pivotable relative to the base about the vertical axes, but it can also be pivoted vertically about said horizontal axes. The horizontal axes, that is, the first and second horizontal axes, and the first and second horizontal pivot axes are arranged perpendicular to the vertical axes, ie, the vertical axes and vertical pivot axes, and transverse to the longitudinal extent of the crane arm. The first and the second horizontal axis extend transversely to the longitudinal extent of the crane arm and the first and the second horizontal pivot axis extending transversely to the longitudinal extent of the first guide rod and the second guide rod.

The first guide rod may be arranged with respect to the crane arm so that it causes a guide or a coupled pivoting of the camera support relative to the crane arm in a horizontal pivoting movement even with a vertical pivoting movement of the crane arm. That is, the guide rod causes, as described above by means of a Hoizontalschwenk around the first vertical axis even with a vertical pivot about the first horizontal axis that the camera support is moved in response to this pivot to either hold the camera support in a defined parallel position to the base or but to allow a coupled pivoting. Thus, a parallel movement of the field of view or a concave or convex directed arcuate guidance of the field of view can be achieved even with a vertical pivot.

In addition, a second guide rod is advantageously arranged at a distance from the crane arm, so that the movement of the camera carrier is guided via the first guide rod in a horizontal pivoting movement, while in a vertical pivoting movement of the camera crane, the second guide rod causes the guide of the camera support in the vertical direction. In particular, the second guide rod causes a parallel movement of the field of view of a camera attached to the camera camera in the vertical direction, that is, by the second guide rod of the camera support is guided during pivoting of the crane arm about the horizontal axis preferably in the vertical direction such that the angular position with respect to the base does not change in the vertical direction, preferably the second vertical axis on the camera carrier always remains parallel to the first vertical axis at the base. The arrangement of the second guide rod in addition to the first guide rod, the function of the camera crane is improved, since thus the first guide rod does not have to be designed for simultaneous guidance of the camera crane in horizontal and vertical pivoting movement. In the following, for the sake of simplicity, only the embodiment with the second guide rod will be described, without limiting the invention only to the embodiment with the second guide rod.

According to a particular embodiment of the invention, the distance between the first horizontal pivot axis and the first horizontal axis and / or the distance between the second horizontal pivot axis and the second horizontal axis may be variable. The second guide rod is thus relative to the crane arm in position variable, that is, it can be arranged parallel or angled to the crane arm. The orientation of the second guide rod relative to the crane arm depends on the ratio of the distance between the first horizontal pivot axis and the first horizontal axis, hereinafter called the first vertical distance, to the distance between the second horizontal pivot axis and the second horizontal axis, hereinafter referred to as second vertical Distance denotes, from. If the first vertical distance equals the second vertical distance, then the second guide rod extends parallel to the crane arm. In a vertical pivoting of the camera crane, that is, the crane arm is pivoted relative to the base about the first horizontal axis, the camera support relative to the base is not tilted, that is, the field of view of a camera would be moved in parallel.

If the first vertical distance and the second vertical distance are of different sizes, the orientation of the camera carrier relative to the base changes during a vertical pivoting movement of the camera crane in such a way that the camera carrier is coupled in a coupled manner with a camera attached thereto and thus not moved in parallel. Thus, as described above with reference to the horizontal pivot, the field of view of the camera can be pivoted along an arc directed radially inward or radially outward, to either pivot about an object or to perform a vertical panorama pan.

Preferably, the crane arm at a first longitudinal end with a first, parallel to the vertical axes extending support member is rotatably connected to the first horizontal axis and at a remote from the first longitudinal end, The second longitudinal end with a second, parallel to the vertical axes extending support member rotatably connected to the second horizontal axis Due to the vertical longitudinal extent of the two support elements, for example, the second guide rod can be arranged both on the first and second support member vertically spaced from the crane arm. Advantageously, the carrier elements extend along the vertical axes.

In a preferred embodiment, the first carrier element is rotatably connected to the base about the first vertical axis and the camera carrier is rotatably connected to the second carrier element about the second vertical axis. The crane arm is preferably spaced in the direction of the first vertical axis of the base and in the direction of the second vertical axis of the camera support and connected via the first and the second support member to the base and the camera support. In this case, the camera support is preferably above and the base preferably below the crane arm. The crane arm is preferably pivotable together with the first carrier element about the first vertical axis relative to the base. The camera carrier is preferably rotatable about the second vertical axis relative to the second carrier element arranged on the second longitudinal end of the crane arm. The two support elements themselves are preferably connected to the crane arm with respect to the first and second vertical axis rotationally fixed.

The second guide bar is preferably spaced from the crane arm in the direction of the vertical axes and rotatably connected to the base member disposed on the first support member about the first horizontal pivot axis and rotatably connected to the second support member about the second horizontal pivot axis. The support elements thus serve to articulate the second guide rod on the base and the camera support so that the guide rod is spaced parallel, preferably arranged below the crane arm. The crane arm, the second guide rod and the two support elements clamp in side view preferably a quadrangle, in particular a parallelogram, at the corner points of the two horizontal axes and the two horizontal pivot axes are located. The second guide rod leads with a vertical pivot the camera carrier on the two support elements. If the crane arm is pivoted about the first vertical axis, the carrier element arranged on the base and the second guide rod connected thereto are also pivoted horizontally.

Advantageously, the first and / or the second carrier element could be designed such that the horizontal pivot axis is displaceable on the carrier element along its vertical extent. Thus, the orientation of the second guide rod relative to the longitudinal extent of the crane arm could be changeable. In particular, these could be aligned not only parallel but also to each other angled, that is, the plane parallel to the horizontal axes, in which the longitudinal extension of the second guide rod is located, and the plane parallel to the horizontal axis, in which the longitudinal extension of the crane arm is located , could be cut or parallel. Thus, according to the previous description, the first and second vertical distances could each be variable.

The base and the camera carrier are preferably connected to the first guide rod via connecting elements extending parallel to the vertical axes. The connecting elements can serve to compensate for the length of the support elements for the articulation of the first guide rod. Thus, the connecting elements are preferably designed so long that the first guide rod lies in a plane with the crane arm, in which plane preferably lie the horizontal axes about which the crane arm is pivotable relative to the base and the camera support. The connecting elements are accordingly preferably of such length that in the vertical direction the distance of the crane arm from the base corresponds to the distance of the guide rod from the base and at the opposite end the distance of the camera carrier from the crane arm corresponds to the distance of the camera carrier from the guide rod.

In a further preferred embodiment, the connecting elements are connected to the first guide rod in each case via a joint, wherein the joint axes of these joints lie in a plane with the first and the second horizontal axis. The first guide rod extends in the same plane in which extends the crane arm. The hinge axes may be parallel to the first and the second horizontal axis. But they can also extend within the plane angled to the first and second horizontal axis, when the first horizontal distance is greater or less than the second horizontal distance and the first guide rod in said plane is not parallel to the crane arm, but has a certain angular position.

In a preferred embodiment, the base and the camera carrier each have a guide section extending transversely to the longitudinal axis of the crane arm, wherein the first guide rod has a first rod end which is displaceable along the guide portion of the base and / or one facing away from the first rod end , Second rod end, which along the guide portion of the Camera support is displaceable. The guide portions on the base and the camera support provide for the above-described distance of the first guide rod to the crane arm in a direction transverse to the vertical axes, that is, parallel to the horizontal axes. In this case, the horizontal distance at the base and / or the horizontal distance on the camera carrier in the manner described above can be changed by the displaceable articulation of the rod ends. If the first rod end is displaceable along the guide section of the base, the first vertical pivot axis is also displaced by the displacement of the first rod end. That is, by shifting the first rod end, the first horizontal distance between the first vertical axis and the first vertical pivot axis is changed. As an alternative or in addition, the second rod end is displaceable along the guide portion of the camera carrier, the second vertical pivot axis is also displaced when the second rod end is moved, that is, the second horizontal distance is correspondingly reduced or enlarged.

Particularly preferably, the guide portion of the base and the guide portion of the camera support each have a transverse to the longitudinal axis of the crane arm recess along which the adjacent rod end of the first guide rod is displaceable. In accordance with the positioning of the respective rod end on the recess, the first or the second horizontal distance is thus defined, the difference of which determines the horizontal pivoting movement of the camera carrier during a horizontal pivoting of the camera crane. It is to be understood that the rod end need not engage directly in the recess, but rather in the recess, a receptacle or a coupling element for the rod member can be slidably mounted.

In each case, a vertically extending connecting element according to the preceding embodiment is advantageously arranged on the first and / or the second rod end, in which case the connecting elements are preferably respectively arranged on the recess and are displaceable along the extent thereof. Advantageously, the connecting elements pass through the recess. The connecting elements are formed particularly advantageous for releasable fixing to the recess. The fixation can be done for example via a Klemmoder screw fastening to the recess. Thus, after adjustment during pivoting of the camera crane, the first and second horizontal distances are fixed.

In a preferred embodiment, an extension arm extending in the direction of the longitudinal axis of the crane arm and preferably movable in the direction of the longitudinal axis is arranged on the crane arm, which has a receptacle for weights at an end facing away from the camera carrier, preferably at least one weight or weight element is part of the camera crane The extension arm is attached to the crane arm and is thus rotatable together with the crane arm about the first horizontal axis and the first vertical axis. The extension arm causes with respect to the first horizontal axis, a torque which counteracts the torque caused by the crane arm. Particularly advantageously, the torque of the extension arm is equal to this torque of the crane arm.

By the extension arm and the weights attached to it a balancing of the camera crane is possible, so that the crane arm can remain in a desired vertical position and does not need to be held. The balancing is done by changing the weights or by changing the lever, e.g. by axial adjustment of the extension arm. For example, cameras of different weights can be attached to the camera carrier and this weight change can be balanced by adjusting the weights.

Alternatively, the extension arm may be formed integrally with the crane arm. The balancing can be done by changing the weights or by moving the weights along the extension arm.

Particularly advantageously, the crane arm and the first guide rod and / or a second guide rod between the base and the camera support are the same length. If the crane arm is of equal length to the first guide bar and the first horizontal distance is equal to the second horizontal distance, the first guide bar extends parallel to the crane arm and the camera carrier has an extension transverse to the longitudinal extent of the crane arm which is parallel to the extension the base is. In the direction of the vertical axes, the first guide rod, the crane arm, the base and the camera carrier thus form a parallelogram. If the camera crane is pivoted horizontally, that is to say the crane arm is pivoted about the first vertical axis, then the viewing direction of a camera arranged on the camera carrier is moved in parallel.

Preferably, a tripod receptacle is arranged on the base and / or the camera carrier has a camera mount. The tripod mount is designed to attach the camera crane to a tripod. Advantageously, the tripod receptacle for a Tripod usual interface, which allows a detachable fixation of the camera crane on the tripod. The camera mount on the camera mount serves to attach a camera to the camera mount. It can have an interface customary for cameras or an interface customary for an adapter to be fixed to the camera, via which the camera can be detachably fixed to the camera carrier.

According to a further preferred embodiment, the camera holder is adjustably fixed to the camera carrier, that is in particular rotatable by an angle. Thus, the camera relative to the camera support in their orientation can be changed and fixed in the desired orientation, whereby the field of view of the camera can be targeted.

The invention is explained in more detail with reference to an embodiment shown in the drawings. It shows

1 a perspective view of a camera crane according to the invention and

2a -C top views on the camera crane according to 1 in three different positions of the first guide rod, each with three positions of a horizontal pivoting movement.

The in 1 shown camera crane 2 has a base 4 and a camera carrier 6 on which a crane arm 8th connected to each other. Both the base 4 as well as the camera carrier 6 extend transversely to the longitudinal extent of the camera crane 2 and each have adjacent to one end in a cantilevered guide portion an elongated recess 10 . 12 on which passes through the guide portion vertically. The camera carrier points to one of the recess 12 opposite end a camera shot 11 on, which has a common interface for mounting a camera.

At one of the recess 10 opposite end of the base 4 is normal to the length of the base 4 as shown here, preferably U-shaped, vertically extending first support member 14 arranged, which is relative to the base 4 about a first vertical axis X _{1 is} rotatable. Between the two legs of the support element 14 is the crane arm 8th at the base 4 opposite end of the first support element 14 articulated about a first horizontal axis Y ₁ rotatably. A second carrier element 16 is at one of the base 4 opposite end of the crane arm 8th rotatably disposed about a second horizontal axis Y ₂ . The second carrier element 16 is elongate and, as shown here, preferably in the shape of a frame and extends along a second vertical axis X ₂ parallel to the first vertical axis X ₁ . That on the second support element 16 arranged end of the crane arm 8th is approximately centrally between two side legs of the second support element 16 about the second horizontal axis Y ₂ rotatably articulated. At the vertically upper end side of the second carrier element 16 is the camera carrier 6 with one of the recess 12 turned away end about the second vertical axis X ₂ rotatably arranged.

The crane arm 8th is about the first vertical axis X ₁ relative to the base 4 rotatable. When pivoting the crane arm 8th around the first vertical axis X ₁ are also the first and second support elements 14 . 16 and the camera carrier 6 with the first vertical axis X ₁ horizontally, ie pivoted along a horizontal path. In addition, the camera carrier 6 opposite the crane arm 8th and the second support member 16 be rotated about the second vertical axis X ₂ . In addition to the horizontal pivot about the first vertical axis X ₁ , the crane arm 8th also about the first horizontal axis Y ₁ relative to the first carrier element 14 in the vertical direction, that are pivoted along a vertical path. Furthermore, the camera carrier 6 and the second support member 16 about the second vertical axis X ₂ relative to the crane arm 8th to be turned around.

To guide the camera carrier 6 opposite the base 4 in a horizontal pivoting about the first vertical axis X ₁ , the camera crane 2 a first guide bar 18 on whose the base 4 facing first rod end 19 about a joint 20 with a rod-shaped connecting element 22 pivoted about a horizontal pivot axis, wherein the first connecting element 22 extends vertically and one from the first rod end 19 the first guide rod 18 opposite end of the connecting element along the recess 10 the base 4 slidably and rotatably fixable by means of a clamping screw. The joint 20 is about a vertical pivot axis X ₃ relative to the connecting element and thus to the base 4 rotatable. One from the first rod end 19 remote second rod end 23 the first guide rod 18 is about a joint 24 on a rod-shaped second connecting element 26 hinged, wherein the second connecting element 26 extends vertically along a second vertical pivot axis X ₄ . One from the second rod end 23 the first guide rod 18 opposite end of the second connecting element 26 is with the camera carrier 6 connected. The second connecting element engages 26 into the recess 12 at the guide portion of the camera carrier 6 such that it is in the recess 12 is displaceable. In this case, a fixation can be made at a desired position via a clamping screw. Further is the joint 24 relative to the connecting element 26 rotatable about the second vertical pivot axis X ₄ . The guide rod 18 and the crane arm 8th point between the base 4 and the camera carrier 6 with respect to their horizontal axes Y ₁ , Y ₂ and Y ₅ , Y ₆ an equal length.

The vertical distance between the base 4 and the horizontal hinge axis Y _{5 of} the joint 20 In this example, it is preferably equal to the vertical distance of the base 4 to the first horizontal axis Y ₁ at which the crane arm 8th on the first carrier element 14 is articulated. Equally equal in this example is also preferably the vertical distance between the camera carrier 6 and the horizontal hinge axis Y6 of the joint 24 and the vertical distance between the camera carrier 6 and the second horizontal axis Y ₂ at which the second support member 16 with the crane arm 8th is rotatably connected. Preferably, the sum of the distance between the base 4 and the first horizontal axis Y ₁ plus the distance from the second horizontal axis Y ₂ to the camera carrier 6 equal to the sum of the distance between the base 4 and the horizontal axis Y ₅ plus the distance between the camera carrier 6 and the horizontal axis Y ₆ . If the sum of the distances is not equal, then the camera carrier can 6 an unintended rotation during a pure vertical panning arise. The longitudinal axis of the crane arm 8th as well as the longitudinal axis of the guide rod 18 extend substantially in a plane in which the joint axes Y ₅ and Y ₆ and the horizontal axes Y ₁ and Y _{2 are} located. When pivoting the crane arm 8th so the guide rod pivots about the horizontal axis Y ₁ 18 essentially parallel to the crane arm 8th about the hinge axis Y ₅ . When swiveling the camera carrier 6 relative to the crane arm 8th The camera carrier is pivoted about the second horizontal axis Y ₂ 6 simultaneously relative to the first guide bar 18 around the hinge axis Y ₆ .

The guide rod 18 is in the horizontal direction of the crane arm 8th spaced so that they are laterally of the crane arm 8th located at a distance from this.

The first connection element 22 and connected to the first vertical pivot axis X ₃ are along the recess 10 of the guide section of the base 4 displaceable, that is, a horizontal distance h ₁ between the first vertical axis X ₁ and the first vertical pivot axis X ₃ is variable. Furthermore, a second horizontal distance h ₂ between the second vertical axis X ₂ and the second vertical pivot axis X ₄ due to the displaceability of the second connecting element 22 along the recess 12 in the camera carrier 6 also changeable.

The joints 20 and 24 are journals mounted with bushes. They preferably have only as much game as it is necessary for a permanent ease.

If the first horizontal distance h _{1 is} equal to the second horizontal distance h ₂ , then the first connecting element is 22 equidistant from the first vertical axis X ₁ as the second connecting element 26 to the second vertical axis X ₂ . The first guide bar 18 then extends parallel to the crane arm 8th , In the plan view of the camera crane 2 along the vertical axes form the base 4 , the camera carrier 6 , the crane arm 8th and the first guide bar 18 thus a parallelogram ( 2a ). Now the crane arm 8th pivoted about the first vertical axis X ₁ , the first guide rod 18 pivoted about the first vertical pivot axis X ₃ at the same angle. Due to the same size of the first horizontal distance h ₁ and the second horizontal distance h ₂ , the camera carrier extends 6 during the horizontal pivoting of the camera crane 2 guided by the first guide rod 18 always parallel to the extension of the base 4 that is the basis 4 and the camera carrier 6 stay aligned parallel to each other. The field of view B one on the camera carrier 6 attached camera 27 which is in 2 is represented by its central axis B is thus displaced in parallel during horizontal pivoting, while the crane arm 8th arcuately pivoted about the first vertical axis X ₁ .

If the first horizontal distance h _{1 is} greater than the second horizontal distance h ₂ , that is, the first vertical pivot axis X ₃ is farther away from the first vertical axis X ₁ than the second vertical pivot axis X ₄ extends from the second vertical axis X ₂ the first guide rod 18 and the crane arm 8th no longer parallel to each other. Rather, as in the plan view of 2 B you can see the crane arm 8th and the first guide bar 18 aligned with each other at an acute angle. When pivoting the crane arm 8th around the first vertical axis X ₁ becomes due to the connection of the first guide rod 18 with the base 4 and the camera carrier 6 this is rotated about the second vertical axis X ₂ such that the camera carrier 6 to the base 4 while the pivot is aligned at different angles. The field of view B of the camera 27 is therefore no longer performed in parallel in the horizontal pivoting. Rather, in this arrangement, the first guide rod 18 the camera 27 is moved along an arc, wherein the viewing direction or the field of view B are directed radially inwardly of the arc. This is the camera 27 with the field of view B around an object to be filmed arcuately guided around.

If the first horizontal distance h _{1 is} smaller than the second horizontal distance h ₂ , then according to FIG 2c the first guide rod 18 to the crane arm 8th inversely angled than in 2 B aligned. During horizontal pivoting of the crane arm 8th around the first vertical axis X ₁ is the camera carrier 6 in an outer angular position opposite to in 2a shown outer angular position turned outwards so that the field of view B of the camera 27 opposite to the 2a shown camera 27 further outwards. Now the camera 27 with the camera crane 2 pivoted, the field of view B moves outward along an arc and there is a panorama pan of the camera 27 over a wide area of the scene in front of her.

Between the first support element 14 and the second support member 16 is still connecting a second guide rod 28 arranged, which are parallel to the crane arm 8th extends and is vertically spaced therefrom downward ( 1 ). The second guide rod 28 is doing with a first end on a swivel joint 30 about a first horizontal pivot axis Y ₃ rotatable with the base 4 facing the end of the first support element 14 connected. At one of the first support member 14 remote end of the second guide rod 28 is a joint 32 arranged over which the second guide rod 28 about a second horizontal pivot axis Y ₄ rotatable with one of the camera carrier 6 opposite end of the second support member 16 connected is. The first horizontal pivot axis Y ₃ and the second horizontal pivot axis Y ₄ are parallel to the first horizontal axis Y ₁ and the second horizontal axis Y. ₂

Here are the camera carrier 6 as well as the joint 32 on opposite sides of the crane arm 8th arranged. While the camera carrier 6 above the crane arm 8th is arranged, is the joint 32 arranged below the crane arm. The carrier elements 14 and 16 essentially ensure that the second guide rod 28 vertically spaced from the crane arm 8th is arranged below this. The camera carrier 6 is a certain amount above the crane arm 8th , where is the vertical distance of the camera carrier 6 required by the second horizontal axis Y ₂ to a sufficient mobility of the camera support 6 to ensure this horizontal axis Y ₂ . The connecting elements 22 and 26 make with regard to the vertical extent of the support elements 14 and 16 sure that the first guide rod 18 side of the crane arm 8th can lie in one plane with this.

In the in 1 shown position of the first guide rod extends while the first guide rod 18 side of the crane arm 8th parallel.

A first vertical distance v ₁ between the first horizontal axis Y ₁ and the first horizontal pivot axis Y ₃ is equal to a second vertical distance v ₂ between the second horizontal axis Y ₂ and the second horizontal pivot axis Y ₄ . In a side view across the length of the camera crane 2 , ie in the direction of the horizontal axes Y ₁ and Y ₂ , form the crane arm 8th , the second guide rod 28 , the first carrier element 14 and the second support member 16 a parallelogram. Both the first vertical distance v ₁ and the second vertical distance v ₂ are fixed, that is, the second guide rod 28 is opposite the crane arm 8th not changeable to arrange. Now the crane arm 8th pivoted about the first horizontal axis Y ₁ , so the second guide rod 28 pivoted about the horizontal pivot axis Y ₃ by the same angle. Due to the fixed distance of the second guide rod 28 to the crane arm 8th During this vertical pivot around the first horizontal axis Y _1, the second carrier element 16 rotated about the second horizontal axis Y ₂ in such a way that it is parallel to the first carrier element 14 remains aligned. Thus, the at the second support element 16 arranged camera carrier 6 during the vertical swing of the camera crane 2 not towards the base 4 but remains in parallel alignment therewith, ie, a horizontal orientation. This is connected to one in the camera recording 11 arranged camera during the vertical pivot in the vertical direction performed in parallel, that is, the recording direction or the field of view B of the camera during vertical pivoting always parallel to the orientation, as it existed at the beginning of the vertical pivot.

At the base 4 is from the crane arm 8th turned away, ie at the bottom, a tripod receptacle 34 arranged. The tripod holder 34 is designed to be arranged on a conventional tripod head of a tripod by means of a corresponding quick change receiver. The arrangement of the camera crane 2 on a tripod allows for a stable elevated arrangement of the camera crane 2 and on the other hand an increased by the length of the tripod assembly.

Along the length of the crane arm 8th is an extension arm 36 arranged, which along the extension of the crane arm 8th is arranged movable or displaceable.

At one the camera carrier 6 facing the end of the extension arm 36 a thumbscrew 38 on which the extension arm 36 in a certain position via a sliding block in the grooved crane arm 8th can be clamped at any point. The crane arm has a groove for receiving a sliding block on a side surface facing the extension arm.

The extension arm 36 extends over that at the base 4 located end of the crane arm 8th out. At his from the camera carrier 6 turned away, over the base 4 and in particular the first horizontal axis Y ₁ extending end has the extension arms 36 a recording 40 for weights 42 on. The extension arm 36 forms with the crane arm 8th a two-armed lever which is pivotable about the first horizontal axis Y ₁ . The weights 42 on a camera carrier 6 opposite end of the extension arm 36 cause a torque about the first horizontal axis Y ₁ , which the torque, which by the weight of the other side of the base 4 is generated counteracts components. This can prevent the camera crane from being blocked 2 moved by itself from a certain vertical position due to its own weight or that the camera crane must be manually held in this vertical position. To different heavy cameras 13 at the camera recording 11 To be able to arrange according to the weight change of the camera, the weights 42 be changed and / or the extension arm 36 can along the crane arm 8th be moved to the length of the lever to which the weights 42 attack, change.

In an alternative embodiment not shown, the first horizontal pivot axis Y ₃ and the second horizontal pivot axis Y ₄ along the vertical extent of the first support member could also 14 and the second support member 15 be displaceable. That is, the second guide rod could be arranged changed relative to the crane arm. Analogous to the in 2 shown different horizontal pivot of the crane arm 8th could in such an embodiment according to a changed arrangement of the second guide rod 28 opposite the crane arm 8th (the first vertical distance v ₁ could be smaller or larger than the second vertical distance v ₂ ) different vertical pans can be realized.

In the example shown here is the crane arm 2 aligned so that the vertical axes X ₁ and X ₂ actually extend in the vertical direction. All axes and directions described as horizontal extend normal to these vertical axes X ₁ and X ₂ and the vertical axes parallel thereto. However, it should be understood that the in 1 shown arrangement could also be placed or used in another angular position in which the vertical axes Y ₁ and Y ₂ and parallel axes would not extend in the actual vertical direction but inclined thereto, possibly even real horizontally. The axes or directions previously described as horizontally would then be correspondingly changed in their angular position, so that they continue to extend perpendicular or normal to the vertical axes. It is to be understood that such an arrangement of the camera crane according to the invention 2 is encompassed by the invention.

LIST OF REFERENCE NUMBERS

2

camera arm

4

Base

6

camera support

8th

kranarm

10

recess

11

camerarecording

12

recess

14

first carrier element

16

second carrier element

18

first guide rod

19

 first rod end

20

joint

22

first connecting element

23

 second rod end

24

joint

26

second connecting element

27

camera

28

second guide rod

30

joint

32

joint

34

stand adapter

36

extension

38

thumbscrew

40

admission

42

weights

X ₁

 first vertical axis

X ₂

 second vertical axis

X ₃

 first vertical pivot axis

X ₄

 second vertical pivot axis

Y ₁

 first horizontal axis

Y ₂

 second horizontal axis

Y ₃

 first horizontal pivot axis

Y ₄

 second horizontal pivot axis

Y ₅

 horizontal axis

Y ₆

 horizontal axis

h ₁

 first horizontal distance

h ₂

 second horizontal distance

v ₁

 first vertical distance

v ₂

 second vertical distance

B

Field of vision or viewing direction

Claims (12)

Camera crane ( 2 ) with a base ( 4 ) for attaching the camera crane ( 2 ) and a camera carrier ( 6 ) for receiving a camera ( 27 ), one the basis ( 4 ) and the camera carrier ( 6 ) connecting crane arm ( 8th ), which is relative to the base ( 4 ) is pivotable about a first vertical axis (X ₁ ) and relative to which of the camera carriers ( 6 ) is pivotable about a second vertical axis (X ₂ ), and with at least one of the base ( 4 ) with the camera carrier ( 6 ), first guide rod ( 18 ), which by the crane arm ( 8th ) in a direction transverse to its longitudinal axis and the vertical axes (X ₁ , X ₂ ) is spaced and at the base ( 4 ) by means of a first vertical pivot axis (X ₃ ) extending parallel to the first vertical axis (X ₁ ) and on the camera carrier ( 6 ) is pivotably articulated by means of a second vertical pivot axis (X ₄ ) extending parallel to the second vertical axis (X ₂ ), wherein the distance (h ₁ ) between the first vertical pivot axis (X ₃ ) and the first vertical axis (X ₁ ) and / or the distance (h ₂ ) between the second vertical pivot axis (X ₄ ) and the second vertical axis (X ₂ ) is variable. Camera crane ( 2 ) according to claim 1, wherein the crane arm ( 8th ) relative to the base ( 4 ) about a first horizontal axis (Y ₁ ) and the camera carrier ( 6 ) relative to the crane arm ( 8th ) are pivotable about a second horizontal axis (Y ₂ ), wherein the first guide rod ( 18 ) or a second guide rod ( 28 ), which is the basis ( 4 ) with the camera carrier ( 6 ), from the crane arm ( 8th ) is spaced in a direction transverse to its longitudinal axis and transverse to the horizontal axes (Y ₁ , Y ₂ ) and at the base ( 4 ) (By means of a first to (parallel to the first horizontal axis Y ₁₎ extending horizontal pivot axis (Y ₃₎ and to the camera mount 6 ) Is pivoted by means of a second to (parallel to the second horizontal axis Y ₂₎ extending horizontal pivot axis (Y _4). Camera crane ( 2 ) according to claim 2, wherein the distance (v ₁ ) between the first horizontal pivot axis (Y ₃ ) and the first horizontal axis (Y ₁ ) and / or the distance (v ₂ ) between the second horizontal pivot axis (Y ₄ ) and the second horizontal axis (Y ₂ ) is variable. Camera crane ( 2 ) according to one of the preceding claims, in which the crane arm ( 8th ) at a first longitudinal end with a first, parallel to the vertical axes (X ₁ , X ₂ ) extending support element ( 14 ) is rotatably connected to the first horizontal axis (Y ₁ ) and at a second longitudinal end facing away from the first longitudinal end, with a second, parallel to the vertical axes extending support element ( 16 ) is rotatably connected to the second horizontal axis (Y ₂ ). Camera crane ( 2 ) according to claim 4, wherein the first carrier element ( 14 ) with the base ( 4 ) is rotatably connected to the first vertical axis (X ₁ ) and the camera carrier ( 6 ) with the second carrier element ( 16 ) is rotatably connected to the second vertical axis (X ₂ ). Camera crane ( 2 ) according to one of the preceding claims, in which the base ( 4 ) and the camera carrier ( 6 ) in each case over parallel to the vertical axes (X ₁ , X ₂ ) extending connecting elements ( 22 . 26 ) with the first guide rod ( 18 ) are connected. Camera crane ( 2 ) according to claim 6, wherein the connecting elements ( 22 . 26 ) with the first guide rod ( 18 ) each via a joint ( 20 . 24 ), the axes of articulation of these joints ( 20 . 24 ) lie in a plane with the first and the second horizontal axis (Y ₁ , Y ₂ ). Camera crane ( 2 ) according to one of the preceding claims, in which the base ( 4 ) and the camera carrier ( 6 ) each one transverse to the longitudinal axis of the crane arm ( 8th ) extending guide section ( 10 . 12 ), wherein the first guide rod ( 18 ) a first rod end ( 19 ), which along the guide portion ( 10 ) the base ( 4 ) is displaceable, and / or one of the first rod end ( 19 ) remote, second rod end ( 23 ), which along the guide portion ( 12 ) of the camera carrier ( 6 ) is displaceable. Camera crane ( 2 ) according to claim 8, in which the guide section ( 10 ) the base ( 4 ) and the guiding section ( 12 ) of the camera carrier ( 6 ) each one transverse to the longitudinal axis of the crane arm ( 8th ) extending recess ( 10 . 12 ) along which the adjacent rod end ( 19 . 23 ) of the first guide rod ( 18 ) is displaceable. Camera crane ( 2 ) according to one of the preceding claims, in which on the crane arm ( 8th ) in the direction of the longitudinal axis of the crane arm ( 8th ) over the base ( 4 ) extending, preferably in the direction of the longitudinal axis movable extension arm ( 36 ) arranged on one of the camera carrier ( 6 ) facing away from a receptacle ( 40 ) for weights ( 42 ) having. Camera crane ( 2 ) according to one of the preceding claims, in which the crane arm ( 8th ) and the first guide rod ( 18 ) and / or a second guide rod ( 28 ) between the base ( 4 ) and the camera carrier ( 6 ) are formed the same length. Camera crane ( 2 ) according to any one of the preceding claims, wherein at the base ( 4 ) a tripod holder ( 34 ) and / or the camera carrier ( 6 ) a camera mount ( 11 ) having.

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