Patent ID: 7659994

Claim:
A device for determining the properties of surfaces comprising: at least one first radiation means having at least one radiation source which emits radiation; at least one first radiation detection means having a first radiation detector element which captures at least a portion of the radiation emitted from the at least one radiation means and subsequently diffused and/or reflected off a measuring surface and outputs at least one measuring signal which is characteristic of the reflected and/or diffused radiation; at least one second radiation detection means having a second radiation detector element which captures at least a portion of the radiation emitted from the at least one radiation means and subsequently diffused and/or reflected off the measuring surface and outputs at least one measuring signal which is characteristic of the reflected and/or diffused radiation; and at least one travelling filter means wherein the same traveling filter means is selectively positionable in an optical path between the measuring surface and the first radiation detector element as well as in an optical path between the measuring surface and the second radiation detector element, said respective optical paths being displaced from each other.