Abstract: A three-component polyurethane composition consisting of a first, a second and a third component, the first component containing a polyol having an OH functionality in the range from 1.5 to 4 and an average molecular weight in the range from 250 to 15000 g/mol and a compound having at least one thiol group, the second component containing at least one metal catalyst for the reaction of hydroxyl groups and isocyanate groups, which can form thiol complexes and preferably has a drying agent, and the third component containing at least one polyisocyanate, the molar ratio of all thiol groups of the compound to all metal atoms of the metal catalyst being between 1:1 and 250:1.

Abstract: An interferometric system for measuring a measured object, having an arrangement for generating a measuring beam path, measuring beams being directed at the measured object, having an arrangement for generating a reference beam path, reference beams being directed to a reference element, having an adjusting arrangement for adjusting a path difference between the measuring beams and the reference beams, and a having a detector for recording images of the superposition of the reference beams and the measuring beams reflected by the measured object. According to the present system, a synchronization arrangement is used to control the adjusting arrangement so that the path difference between the measuring beams and the reference beams is adjusted in synchronization with the images recorded by the detector. The present system also relates to a method for adjusting a path difference.

Abstract: A device for optical characterization of a sample is provided, the sample being accommodated in a receptacle container transparent to light. The device includes a camera, using which the sample may be detected, and a first light source is situated in such a way that the sample is transilluminated opposite to the viewing direction of the camera, a second light source is situated on the same side as the camera, and a laser source is situated transversely to the viewing direction of the camera.

Abstract: An interferometric system for measuring a measured object, having an arrangement for generating a measuring beam path, measuring beams being directed at the measured object, having an arrangement for generating a reference beam path, reference beams being directed to a reference element, having an adjusting arrangement for adjusting a path difference between the measuring beams and the reference beams, and a having a detector for recording images of the superposition of the reference beams and the measuring beams reflected by the measured object. According to the present system, a synchronization arrangement is used to control the adjusting arrangement so that the path difference between the measuring beams and the reference beams is adjusted in synchronization with the images recorded by the detector. The present system also relates to a method for adjusting a path difference.

Abstract: In a device for obtaining a three-dimensional topography of a measured object, a center axis of an illumination system is situated at an angle with respect to a recording direction of a 2D camera, and the illumination system generates a focal plane on a predetermined area of the measured object, the predetermined area being smaller than a recording area of the 2D camera. The measured object is movable relative to the 2D camera and relative to the illumination system with the aid the movement device. The 2D camera records multiple images of the measured object from various positions which are occupied due to the movement of the movement device.

Abstract: A device for optical characterization of a sample is provided, the sample being accommodated in a receptacle container transparent to light. The device includes a camera, using which the sample may be detected, and a first light source is situated in such a way that the sample is transilluminated opposite to the viewing direction of the camera, a second light source is situated on the same side as the camera, and a laser source is situated transversely to the viewing direction of the camera.