Abstract: A method and a device for a spatially resolved examination and evaluation of the properties of surfaces, in particular such properties of surfaces which affect the optical impression which the surface makes. A defined radiation is directed at a first predetermined solid angle to an examined surface. Furthermore, at least a portion of the radiation affected by the examined surface in particular by diffusion and reflection, is detected at a second predefined solid angle. At least one measured variable is spatially resolved captured which characterizes at least one predetermined property of the radiation affected by the examined surface. At least over a portion of the spatially resolved measured values at least one statistical parameter for characterizing the surface is determined.

Abstract: A device for the quantified evaluation of surface characteristics including a first radiation structure which is arranged in a first predetermined angle with respect to a surface to be analyzed and which directs radiation onto the surface to be analyzed, wherein the radiation directed onto the surface has at least one component with wavelengths in the infrared area, a detection apparatus arranged in a second predetermined angle with respect to the surface to be analyzed detecting the radiation radiated onto the surface and being thrown back from it.

Abstract: A method for characterizing surfaces wherein a first and a second quantity characteristic of roughness of the surface are determined, a first derived quantity is determined by applying mathematical operations to at least said first characteristic quantity and a second derived quantity is determined by applying mathematical operations to at least said second characteristic quantity; wherein an interrelationship between the first and the second derived quantity will be formed which at least partially specifies at least the optical properties of the surface. Finally, the first and the second derived quantities are represented in a common reference frame.

Abstract: A method for determining the properties of surfaces wherein a first process step specified radiation emits from at least one radiation source to a measuring surface, in further process steps the radiation reflected and/or scattered off the measuring surface is detected by a plurality of image-capturing components, and a signal is generated which specifies at least one parameter of the radiation detected by the image-capturing components. In further process steps the first signals are grouped based on predetermined criteria to form group signals, and at least one group-specific evaluation figure is computed, and a dependent statistical parameter correlating with at least one measuring surface remission characteristic. Finally at least one statistical parameter is read out in dependence on the predetermined criterion for grouping said first signals. The properties of the surface are specified by a relation between at least two statistical parameters.

Abstract: A device for measuring the visual characteristics of surfaces comprises a light source the light of which is directed onto the measurement surface under a predetermined angle, and a measurement means which measures the light reflected from said measurement surface, said measurement means comprising at least three photo sensors which are arranged such that they measure the intensity of the reflected light in sections which correspond to a different reflection angle. The photo sensors form an integrated device, a common substrate being provided on which the light sensitive sources are arranged in essentially one plane and detect the amount of incident light essentially independently of each other, said light sensitive layers being designed such that they detect the amount of light reflected in a predetermined angle range each.

Abstract: In a method and a device for optically characterizing a goniochromatic surface, for example a metallic painting surface, only a fixed measuring angle setting is used according to the invention.

Abstract: The invention provides a device for measuring characteristic quantities of an at least partially transparent sample, comprising: an illumination component including a light source (1) which emits light in a predetermined wavelength range and which is arranged such within this illumination component that the light substantially propagates along a predetermined optical axis, a sample reception space provided between this illumination component and a measuring component and arranged such with respect to this optical axis that the light which emerges from the light source first passes a sample located within that sample reception space and then enters this measuring means, a measuring component including a substantially closed measuring space having an opening through which this optical axis extends and through which the light enters after having passed the sample, and which also includes a photodetector component (2) being sensitive at least within this predetermined wavelength range, including at least two dete

Abstract: A process and device for the quantifiable assessment of the physiological impression of reflective surfaces using a point source of light, whose light reflected by the measured surfaces is captured by a photodetector. A series of measured surface values are derived from these measured brightness values for a number of measuring points, which have an exactly defined separation, for which a number of preceding and following measured brightness values are each taken into consideration. The wavelength of the surface disturbances can thereby be determined and analyzed. At least one quality index is derived from the determined measured surface values for the evaluation of the respective surface. The device can be constructed as a hand-held device and moved manually over the surface being tested. For this purpose, the device has at least one measuring wheel, which is rotated by the contact with the surface and whose rotational movement is used to determine the individual measuring points.

Abstract: A honing or grinding tool and a measuring device used therewith is descri The honing tool includes a cutting element, a cutting element support and a layer disposed between and connecting the cutting element and the cutting element support. The layer includes a substance embedded therein which selectively absorbs and/or emits electromagnetic radiation at specific wavelengths, such that the substance is exposed when the cutting element is worn off and detected by the measuring device.