Device for a goniometric examination of optical properties of surfaces
AssigneeBYK Gardner GmbH
InventorsUwe Sperling, Peter Schwarz
Life of this patent
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Abstract
A device for examining the optical properties of surfaces includes at least one first radiation device emitting radiation to a surface to be examined at least at a first predetermined spatial angle, at least one first detector for capturing the radiation emitted to and reflected back from the surface, wherein the detector, allowing a local resolution of detected radiation, is positioned at least at a second predetermined spatial angle relative to the surface. At least one spatial angle at which the radiation device and/or the detector are positioned, is variable and the radiation device and the detector are positioned in a space at least part of which exhibits light-reflecting properties.
Claims39
A device for examining the optical properties of a surface to be examined made up of a plurality of individual pigments, the device comprising:
- at least one first radiation means emitting collimated radiation to the surface to be examined at least at a first predetermined spatial angle;
- at least one first detector means for capturing the radiation emitted to and reflected back from the surface wherein said detector means comprises an image-capturing component configured for allowing a local resolution of detected radiation and is positioned at least at a second predetermined spatial angle relative to said surface, said local resolution enabling examination of the individual points of said radiation detected by said detector means and thereby the examination of the individual pigments and the effects resulting therefrom;
- at least one further radiation means emitting non-collimated or diffused radiation simultaneously at a plurality of third spatial angles to the surface to be examined;
- wherein said first, second and third predetermined spatial angles are a tuple of a first spatial subangle and a second spatial subangle;
- wherein at least one spatial angle at which said radiation means and/or said detector means are positioned, is variable;
- and
- wherein the radiation means and the detector means are positioned in a substantially closed volume space which exhibits light-reflecting properties.
A device for examining the optical properties of a surface to be examined made up of a plurality of individual pigments, the device including:
- at least one first radiation means emitting radiation at least at a first predetermined spatial angle to the surface to be examined;
- at least one first detector means for capturing the radiation emitted to and reflected back from the surface wherein said first detector means, allowing a local resolution of detected radiation, is positioned at least at a second predetermined spatial angle relative to said surface, said local resolution enabling examination of the individual points of said radiation detected by said detector means and thereby the examination of the individual pigments and wherein said detector means is selected from a group including cameras and CCD chips;
- and
- at least one further detector means detects radiation emitted to and reflected back from the surface and which only permits an examination of the radiation intensity and the spectral characteristics without local resolution;
- wherein said first and second predetermined spatial angles are a tupel of a first spatial subangle and a second spatial subangle;
- wherein the radiation means and the detector means are positioned in a substantially closed volume space which exhibits light-reflecting properties.
Dependencies are inferred from the claim text.