Abstract: The present invention relates to a lens or objective for a camera, more particularly for a digital camera, comprising a housing, an actuating element arranged on the housing, and a lens element system that can be set into a plurality of settings, wherein the lens element system is embodied in such a way that in at least one setting an f-number is F?3. The lens element system is furthermore embodied in such a way that an actuation of the actuating element brings about a movement of two optical elements relative to one another, such that an intersection length difference of the lens element system can be set.

Abstract: Scanbody for detecting the position and orientation of a dental implant. A scanbody including a bottom section capable of being connected to an implant, and also a three-dimensional scannable region having an asymmetrical geometry permitting unequivocal detection of its surface from different scanning directions in relation to a longitudinal center axis of the scanbody. The scannable region is provided, on its peripheral cylindrical surface, with scannable sections that are radially offset outwardly and/or inwardly in relation to the peripheral cylindrical surface, each of which scannable sections is differently shaped from the other scannable sections.

Abstract: A method and a device for position-dependent compliance compensation in a machine tool is disclosed. The compliance of the machine tool is derived at a position of a tool of the machine tool from machine data stored in memory, a machining force acting on the tool during a machining process at this position is determined, and at least one machining parameter that has an influence on the machining process is derived at this position in dependence on the derived compliance and the machining force so as to counteract a displacement of the tool with respect to a desired position caused by the compliance of the machine tool and the machining force. This optimizes the machining time and/or contour fidelity when machining a workpiece with a machine tool.

Abstract: An abutment for an implant system including a root section that can be anchored in an implant and a head section for the accommodation of a prosthetic item, characterized in that a peripheral surface of the head section is rotationally symmetrical in relation to a longitudinal center axis (L) of said abutment and is tapered toward an end face of the head section which is remote from said root section.

Abstract: The invention relates to a method and a device for position-dependent compliance compensation in a machine tool. To permit the lowest possible machining time or greatest possible contour fidelity in the machining of a workpiece with a machine tool, the following method steps are proposed:—deriving the compliance (2) of the machine tool (1) at a position of a tool of the machine tool (1) from machine data (3) stored in a memory,—determining a machining force (4) acting on the tool during a machining process at said position,—modification of at least one machining parameter (5) that has an influence on the machining process for the said position in dependence on the derived compliance (2) and the machining force (4) in such a way that a displacement (6) of the tool with respect to a desired position that is caused by the compliance (2) of the machine tool (1); and the machining force (4) is counteracted.

Abstract: A method and a device for determining tracking configurations for augmented reality applications are provided. A determination is automatically carried out based on a list of modules provided in a real environment and known tracking data of individual modules of the list in terms of an online operation at an operator of a system.

Abstract: The invention is directed to an objective, particularly for telescope-type stereomicroscopes. The objective comprises two lens groups, a first lens group and a second lens group. The first lens group, which faces the object plane, has a positive refractive power and comprises a plurality of lenses of which at least two form a cemented component. The second lens group, which is on the image side, has a negative refractive power and comprises a collecting cemented component and a diverging lens. The objective is characterized in that the following conditions B1 and B2 are met: where DAP represents the diameter of the exit pupil of the objective and ?1 represents the maximum field angle.

Abstract: The invention relates to a system for determining the position of a user and/or a moving device by means of tracking methods, in particular for augmented reality applications, with an interface (9) to integrate at least one sensor type and/or data generator (1, 2, 3, 4) of a tracking method, a configuration unit (20) to describe communication between the tracking methods and/or tracking algorithms and at least one processing unit (5, 6, 7, 8, 10, 11, 12, 13, 16) to calculate the position of the user and/or the moving device based on the data supplied by the tracking methods and/or tracking algorithms.

Abstract: There is described a system and method for detecting a geometry of a workpiece for the purposes of processing the workpiece. In order to simplify optimization of a manufacturing strategy for processing a workpiece, the system has at least one camera for producing at least one image of the workpiece before a processing step, a memory area for desired geometry values the workpiece should have after the processing step, determination means for determining workpiece geometry values the workpiece has before the processing step on the basis of the at least one image, and calculating means for calculating differential geometry values describing a difference between the workpiece geometry values and the desired geometry values.

Abstract: The invention is directed to an objective, particularly for telescope-type stereomicroscopes. The objective comprises two lens groups, a first lens group and a second lens group. The first lens group, which faces the object plane, has a positive refractive power and comprises a plurality of lenses of which at least two form a cemented component. The second lens group, which is on the image side, has a negative refractive power and comprises a collecting cemented component and a diverging lens. The objective is characterized in that the following conditions B1 and B2 are met: 46.5<DAP?60 and??B1 0.16?tan ?1,??B2 where DAP represents the diameter of the exit pupil of the objective and ?1 represents the maximum field angle.

Abstract: Method and system for calibrating a camera (12) in the working chamber (10) of a production machine. A calibration object (24) inside the working chamber (10) of the machine is brought to different positions and its picture is taken by the camera (12). The position parameters of the calibration object (24) are assigned to the corresponding pictures taken by the camera (12). The parameters of the camera (12) can be determined on the basis of the thus determined data. According to the invention, the different positions of the calibration object (24) inside the working chamber (10) are determined using the measurement system of the machine in order to obtain particularly precise parameters of the camera (12), the parameters of the camera (12) being determined taking into account the data from the measurement system of the machine.

Abstract: The invention is directed is directed to a projection unit for a head-up display having an image generator, a mirror and a refractive lens which are arranged in a housing one behind the other in the light propagation direction. The beam path is directed to a windshield. Notably the mirror has a concave reflection surface, and the lens has a free-form surface at lease on one of the optically active surfaces (D-U and/or D-O).

Abstract: The invention relates to a device and a method for determination of location information of a workpiece. To enable rapid calibration of a relative position of the workpiece (1) in relation to a tool provided for processing said workpiece, it is proposed that the device features a camera for recording at least a partial area of the workpiece, first processing means for determination of geometrical parameters on the basis of the partial area recorded by the camera, a memory for a geometry model of the workpiece and second processing means for determining the location in-formation of the workpiece by reconciling the geometrical parameters with the geometry model, with the location information being provided for determining the position of the workpiece in relation to a tool pro-vided for processing it.

Abstract: The invention relates to a device and a method for determination of location information of a workpiece. To enable rapid calibration of a relative position of the workpiece (1) in relation to a tool provided for processing said workpiece, it is proposed that the device features a camera for recording at least a partial area of the workpiece, first processing means for determination of geometrical parameters on the basis of the partial area recorded by the camera, a memory for a geometry model of the workpiece and second processing means for determining the location in-formation of the workpiece by reconciling the geometrical parameters with the geometry model, with the location information being provided for determining the position of the workpiece in relation to a tool pro-vided for processing it.

Abstract: The invention is directed to a projection unit for a head-up display comprising an image generator and a first mirror and second mirror for optical imaging which are arranged in a housing one after the other in the light propagation direction in such a way that the beam path is folded twice. It is wherein one of the mirrors has a light-scattering surface shape, the other mirror h/as a light-collecting surface shape, and the two mirrors combined have a common focal point on the image generator.

Abstract: The invention is directed to a projection unit for a head-up display comprising an image generator, a mirror and a refractive lens which are arranged in a housing one behind the other in the light propagation direction. The beam path is directed to a windshield. The invention is characterized in that the mirror has a concave reflection surface, and the lens has a free-form surface at least on one of the optically active surfaces (D-U and/or D-O).

Abstract: The invention relates to a system for determining the position of a user and/or a moving device by means of tracking methods, in particular for augmented reality applications, with an interface (9) to integrate at least one sensor type and/or data generator (1, 2, 3, 4) of a tracking method, a configuration unit (20) to describe communication between the tracking methods and/or tracking algorithms and at least one processing unit (5, 6, 7, 8, 10, 11, 12, 13, 16) to calculate the position of the user and/or the moving device based on the data supplied by the tracking methods and/or tracking algorithms.

Abstract: A stationary data processing device communicates with a mobile data processing device, such as a client in the field of augmented-reality techniques in an automation system, or a production machine, or a machine tool or parts thereof. The stationary data processing device includes a server for communication with a browser on the mobile data processing device; an information broker for providing context-related information; legacy systems that contain and store information; and an information model that represents the information space and that allows navigation within the information and access to the information by the information broker independent of the legacy systems. The information broker utilizes the actual context, especially location, work situation, EA devices used and the information model.

Abstract: The invention relates to a system and a method for combined use of different types of display with system-controlled, context-dependent information display, having a mobile data processing apparatus and having a plurality of interaction devices which are operated in parallel by the mobile data processing apparatus for display and/or input, and having a higher-level system for monitoring the interaction devices such that at least one respectively suitable output display type is selected as a function of the input parameters.

Abstract: The present invention relates to a process for working up solutions of polymers in organic solvents contaminated by alkaline constituents, using homogeneously soluble acids, especially by the introduction of an acid gas, and subsequent washing, and to the polymers so obtainable, which are distinguished by the fact that, on treatment with moist heat (sterilisation), only few defects caused by decomposition are formed, to the use thereof in the production of extrudates and molded specimen, and to the extrudates and molded specimen produced from those polymers themselves.