Abstract: A calibration apparatus for a processing system with a plurality of optical tools is provided. The calibration apparatus includes a housing with a stop aperture, a sensor arrangement for capturing light that is incident through the stop aperture, and a light source arrangement for emitting light through the stop aperture.

Abstract: An OCT system includes an optical coherence tomograph for recording a height profile of a workpiece surface by optical scanning of the workpiece surface. The OCT system includes a camera for recording an image of the workpiece surface and a display for the joint, in particular superimposed, display of the recorded image and the recorded height profile of the workpiece surface. A method for displaying an optically scanned region of a workpiece surface is also provided.

Abstract: A method for identifying objects using an object identification system, wherein a respective pattern of an object to be identified is taught to the object processing system in the form of a pattern edge image formed from edge points, wherein at least one image which is recorded using an image recording unit and is to be examined is subsequently examined for the presence of an object that corresponds to a relevant pattern by comparing edge points in the recorded image with edge points in the pattern edge image, wherein an overall quality value is determined as a measure of correspondence between the object and the pattern, is distinguished by the fact that an association with lines in the pattern is then determined for the edge points of the pattern by finding edge points with essentially the same orientation.

Abstract: The condition of the roadway with respect to dryness, wetness, or icing is determined, contact-free by way of reflection measurements of light in the infrared range. The reflected light is measured selectively and simultaneously by a receiver in at least two wavelength regions with the wavelength ranges to be determined being in spectral dependence from the surface condition. Formation of a quotient of the detected signals makes possible an unequivocal statement regarding the respective condition of the roadway surface.

Abstract: A system for determining the average water film thickness on surfaces, and in particular roadways, with the reflection of microwaves on the surface of the film of water being measured. To be able to easily measure water film thicknesses of several millimeters without contact and with great accuracy, the system includes at least two partial systems which each comprise a signal source and a receiver. The individual partial systems operate at different frequencies which are selected such that the maximum accuracy measuring regions associated with the respective frequencies are contiguous and cover the predetermined water film thickness range to be determined. The partial systems are connected with a sampling and control device which activates at least that partial system which exhibits maximum measuring accuracy for the respective water film thickness being measured and utilizes only the output signal from the receiver of that partial system for the measurement.

Abstract: A gas laser which has transverse high frequency exitation and which is improved in efficiency and in power density by the use of a coupling structure which assures a roughly positional independent electrical field strength for each neutral particle density in the full discharge space and this is accomplished with capacitance electrodes (2) between which the discharge space of a laser are arranged in a cavity resonator and wherein the mutual spacings between the capacitive electrodes (2) are positionally dependent and are selected such that they assure that an electrical field strength proportional to the neutral particle density occurs.