Patent ID: 8908184

Claim:
An absorption measurement system for measuring at least one property of a medium reflected in its absorption behavior, especially a property such as an absorption coefficient of the medium, comprising: a measuring chamber filled with the medium in measurement operation, in which radiatable beam paths, usable as measuring paths and of different lengths, extend completely through the medium; a transmitting unit, which transmits radiation along the measuring paths through said measuring chamber in measurement operation; a measuring and receiving unit, which receives radiation passing through said measuring chamber on the measuring paths and measures its radiation intensities dependent on the property of the medium and the lengths of the measuring paths; and measuring electronics, which determines the property based on the measured radiation intensities and the lengths of the measuring paths; wherein said measuring chamber has an entrance surface, through which radiation of said transmission system enters into said measuring chamber, and an exit surface, through which the radiation escapes from said measuring chamber; and said entrance surface and/or said exit surface is a curved area, especially a convex or concave area.