Abstract: A device for detecting the three-dimensional geometry of objects (9), in particular teeth, includes a handpiece (1) which is provided with at least one position sensor (12) for detecting the change of the spatial position of the handpiece (1), and an optical device (2) having at least one camera (5, 6) for capturing images and at least one light source (3) for at least one projector (4). The position sensor (12) in the handpiece (1) initially determines the size of the change of the spatial position of the device. It is determined therefrom, how many pictures the camera (5, 6) can take in a defined time unit.

Abstract: A holding device with a base element for a handpiece of an intraoral scanner, which has a head area (3), has a receiving area (5) of the base element (1), in which the head area (3) can be snugly accommodated at least partially. The receiving area (5) has an interior (8) with at least two holding areas (10, 11), which are arranged essentially opposite to one another.

Abstract: In the case of a method for optical acquisition of the three-dimensional geometry of objects, in particular teeth (4), with a scanner (14), which has a scanning head (13), the three-dimensional geometry that is acquired in a virtual three-dimensional space (1) in the course of scanning is noted. In this case, in the course of scanning, positions of a defined scanner geometry (2) of the scanner (14), in particular of the scanning head (13), are noted relative to the object (4) that is acquired, and, moreover, an area (6) in which the defined scanner geometry (2) is or was located is determined. The determined area (6) is marked, for example as “empty,” in the virtual space (1).

Abstract: A device for the three-dimensional recording of objects (10), in particular teeth, includes a recording region (2), in which at least one mirror (26, 27, 28) is arranged in order to deflect a light or projection beam (23) and/or an image reflected by the object (10), and a gripping region (3). A camera (32) and/or a projector (14) is/are arranged in the recording region (2), and the recording region (2) is tilted against the projection direction at an angle (a) between 10° and 40° relative to the gripping region (3).

Abstract: A method for acquiring three-dimensional images of objects uses two cameras having acquisition areas that overlap each other. In the course of a calibration method, a group of epipolar lines associated with each other is determined for each of the cameras. A specified random image is projected onto the object to be imaged. For each pixel of the camera, a first environment is determined, an associated first epipolar line is determined, and for the first epipolar line an associated second epipolar line of the second camera is determined. For all pixels of the image of the second camera that are located on the second epipolar line, a second environment congruent to the first environment is determined. The intensity values of the first and the second environments are compared with each other and a measure of agreement is calculated. A spatial position is determined by use of the previously determined transformation.