Patent ID: 7977638
Filing Date: 2011-07-12
Classification: G01N,Y10T

Abstract:
1. An optical sensor arrangement for detecting at least one analyte in a measured medium comprising: at least one radiation source for emitting radiation, at least one measuring transducer wherein optical characteristics and a physical characteristic of the measuring transducer are modified in response to the presence and/or concentration of the analyte in the measured medium and the measuring transducer is arranged so that the measuring transducer interacts with at least part of the emitted radiation, a first detector unit for capturing a change in radiant intensity as a result of the modified optical characteristics of the measuring transducer and for outputting a first measuring signal, at least a second detector unit set up in order to capture the change in the physical characteristic, a light conducting body which is transparent to the emitted radiation with the measuring transducer, which is sensitive to the analyte, being arranged on at least one surface of the light conducting body so that the emitted radiation impinges on a surface of the measuring transducer which faces away from the measured medium, wherein the measuring transducer is sloped relative to the direction of emitted radiation so that at maximum reflectivity, approximately all the radiation is reflected towards the first detector unit, and at least a second measuring transducer which comprises an absorption measuring path being integral with the light conducting body for detecting a polar gas, wherein the radiation source is positioned centrally with respect to the measuring transducer and the second measuring transducer.