Abstract: A method of enabling a control of an orientation of a tool, particularly a dental drill, in relation to a work part, particularly a jaw, is disclosed. The method includes mounting a work part inertial system unit stationary to the work part; mounting a tool inertial system unit stationary to the tool; obtaining a digital image of the work part; defining three reference spots on the digital image of the work part wherein the three reference spots are distant from each other and stationary in relation to the work part; defining a target orientation of the tool on the digital image of the work part wherein the target orientation is definite with respect to a reference plane comprising the three reference spots; and referencing the tool inertial system unit to the three reference spots of the work part.

Abstract: An endoscope having two entry lenses, which are arranged spaced from each other and the fields of view of which overlap, and having guiding devices. The entry lenses are spaced so far apart from each other that the outer edges thereof protrude beyond the cross-sectional area of the guiding devices, and a lens displacing the axis beam is inserted between one entry lens and the guiding devices. A method for the use of the endoscope.

Abstract: The invention relates to a method for ascertaining spatial coordinates in which at least two markers are put on a living being and at least two cameras in a stereo arrangement are used to ascertain the spatial coordinates of the markers, wherein the spatial coordinates of the markers are compared with a reference and the difference is calculated and output. The invention also relates to quantitative length and angle measurements using optical, stereometric measurement systems for medical applications.

Abstract: An endoscope having two entry lenses, which are arranged spaced from each other and the fields of view of which overlap, and having guiding devices. The entry lenses are spaced so far apart from each other that the outer edges thereof protrude beyond the cross-sectional area of the guiding devices, and a lens displacing the axis beam is inserted between one entry lens and the guiding devices. A method for the use of the endoscope.

Abstract: The method for reconstructing the three-dimensional shape of the surface (14) of at least a portion of an ear canal (18) and/or of a concha comprises—for each of a multitude of points (12) on said surface (14)—the step of using a chromatic coded distance measurement technique for determining a distance value (40) representative of a distance to said point (12); and further comprises the step of reconstructing said three-dimensional shape based on said multitude of distance values (40).

Abstract: In order to develop known tracking systems, in particular in the medical field, the invention proposes a device for the contactless determination and measurement of a spatial position and/or spatial orientation of bodies using a tracking system, by means of which the bodies are located and brought into relation with one another, the tracking system, or at least components or modules thereof, being mobile.

Abstract: Disclosed is a measuring instrument for determining geometric properties of a profiled element. Said measuring instrument comprises:—a device that generates at least one first light beam (7) and a second light beam (8), the direction of radiation of the first light beam being different from the direction of radiation of the second light beam;—a retro-reflecting surface (3) which is arranged in such a way relative to the light source that at least some of both light beams is incident on the retro-reflecting surface; and—a recording device (14) which can determine, across the transversal extension thereof, the light intensity distribution of at least some of the reflected light beam of the first light beam and at least some of the reflected light beam of the second light beam, the first light beam being reflected by the retro-reflecting surface and the second light beam being reflected by the/a retro-reflecting surface.

Abstract: The invention relates to a medical measuring system, surgical intervention methods, and the use of a medical measuring system. The measuring system comprises two two-dimensional imaging sensors, a light source that is rigidly connected to the camera system in order to project structured light onto objects, and a structure that has a two-dimensional pattern and is mounted on an object.

Abstract: Disclosed is a measuring instrument for determining geometric properties of a profiled element. Said measuring instrument comprises:—a device that generates at least one first light beam (7) and a second light beam (8), the direction of radiation of the first light beam being different from the direction of radiation of the second light beam;—a retro-reflecting surface (3) which is arranged in such a way relative to the light source that at least some of both light beams is incident on the retro-reflecting surface; and—a recording device (14) which can determine, across the transversal extension thereof, the light intensity distribution of at least some of the reflected light beam of the first light beam and at least some of the reflected light beam of the second light beam, the first light beam being reflected by the retro-reflecting surface and the second light beam being reflected by the/a retro-reflecting surface.

Abstract: An apparatus (1) for generating a rotating laser beam (5) which may used for various applications including welding, cutting, drilling or ablation of materials. More particularly, the apparatus is able to produce a fast rotating and accurate laser beam, because the main optical device (100) that is rotated consists of a reflecting surface (102) rotating about an axis (X1) that it intersects.

Abstract: In order to develop known tracking systems, in particular in the medical field, the invention proposes a device for the contactless determination and measurement of a spatial position and/or spatial orientation of bodies using a tracking system, by means of which the bodies are located and brought into relation with one another, the tracking system, or at least components or modules thereof, being mobile.

Abstract: The method for reconstructing the three-dimensional shape of the surface (14) of at least a portion of an ear canal (18) and/or of a concha comprises—for each of a multitude of points (12) on said surface (14)—the step of using a chromatic coded distance measurement technique for determining a distance value (40) representative of a distance to said point (12); and further comprises the step of reconstructing said three-dimensional shape based on said multitude of distance values (40).

Abstract: The invention relates to a method for measuring the deformation of a specimen without contact with the specimen. The surface of the measured specimen is partly illuminated by a laser light having uniform intensity. A speckle image is produced due to the local quality of the surface and is reproduced via an optical image sent onto a light-sensitive sensor. At least one reference speckle is selected by an evaluator unit from the totality of the speckles of the speckle image. The displacement of the reference speckle on the sensor is evaluated as the measure of the change that occurred in the specimen. In addition, the invention provides a device for performing this method.