Device and method for determining the properties of surfaces
AssigneeBYK Gardner GmbH
InventorPeter Schwarz
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Abstract
The present invention relates to a device and a method for determining the properties of surfaces having at least one first radiation means for collimated irradiation of a measurement surface to be examined and at least one second radiation means for non-collimated irradiation of said measurement surface wherein the space above said measurement surface has substantially radiation-absorbing properties. The device of the invention further comprises at least one radiation detector means which captures at least a portion of the radiation reflected and/or diffused off the surface to be examined and emits at least one measurement signal which is characteristic of the reflected and/or diffused radiation.
Claims31
A device for measuring the properties of high-gloss or metallic finishes in particular of vehicle bodies, having:
- at least one first radiation means having at least one first radiation source which directs substantially collimated radiation at a predetermined angle towards a measurement surface;
- a plurality of second radiation means each having at least one second radiation source, each of which projects non-collimated radiation onto the measurement surface, wherein said plurality of second radiation means are spatially distributed to achieve a uniformly non-collimated radiation onto said measurement surface;
- and
- at least one radiation detector means which captures at least a portion of the radiation reflected and/or diffused off the measurement surface and emits at least one measurement signal which is characteristic of the reflected and/or diffused radiation,
- wherein said radiation detector means comprises a device for detecting incident radiation dependent on a wavelength of said radiation.
A device for measuring the properties of high-gloss or metallic finishes in particular of vehicle bodies, having:
- a housing positioned above a measurement surface;
- at least one first radiation means positioned in said housing and having at least one first radiation source which directs substantially collimated radiation at a predetermined angle towards the measurement surface;
- a plurality of second radiation means positioned in said housing and having at least one second radiation source, each of which projects substantially non-collimated radiation onto the measurement surface, said plurality of second radiation means being equally distributed on a geometrical spherical surface or a geometrical surface of a rotational ellipsoid;
- and
- at least one radiation detector means which captures at least a portion of the radiation reflected and/or diffused off the measurement surface and emits at least one measurement signal which is characteristic of the reflected and/or diffused radiation,
- wherein said radiation detector means comprises a device for detecting incident radiation dependent on a wavelength of said radiation.
Dependencies are inferred from the claim text.