Abstract: A sensor for monitoring a medium has an electromagnetic radiation source, mirrors, and a detector for electromagnetic radiation arranged inside a cup-shaped housing part. The cup-shaped part has flat, angularly arranged wall areas defining a cavity in which, outside of the housing, the medium is contained. The flat wall areas are transparent for electromagnetic radiation and arranged in the beam path from the electromagnetic radiation source to the detector so that the electromagnetic radiation passes through first wall, medium in the cavity, and second wall. The first and second wall areas and the medium form a refracting prism. A cover closes off the cup-shaped part so that electromagnetic radiation source, detector, and mirrors are enclosed in the housing. A data processing system is connected to electromagnetic radiation source and detector so that electromagnetic radiation of different wavelengths is refracted in the prism and the resulting spectra are detected and evaluated.

Abstract: A sensor for monitoring a medium has an electromagnetic radiation source, mirrors, and a detector for electromagnetic radiation arranged inside a cup-shaped housing part. The cup-shaped part has flat, angularly arranged wall areas defining a cavity in which, outside of the housing, the medium is contained. The flat wall areas are transparent for electromagnetic radiation and arranged in the beam path from the electromagnetic radiation source to the detector so that the electromagnetic radiation passes through first wall, medium in the cavity, and second wall. The first and second wall areas and the medium form a refracting prism. A cover closes off the cup-shaped part so that electromagnetic radiation source, detector, and mirrors are enclosed in the housing. A data processing system is connected to electromagnetic radiation source and detector so that electromagnetic radiation of different wavelengths is refracted in the prism and the resulting spectra are detected and evaluated.

Abstract: The invention relates to sensors for monitoring a medium, comprising an electromagnetic radiation source and a detector of electromagnetic radiation, the medium being located in the ray path between the electromagnetic radiation source and the detector and the refraction varying when the medium varies. The sensors are characterized by their ease of production. To that end, the electromagnetic radiation source and detector are disposed in at least one housing. Furthermore, either at least one region or at least one component of the housing consists of material which is transparent to electromagnetic radiation, the medium being located in the region or at the component of the housing. At least one wall of the region is so disposed or designed that the radiation for refraction impinges on or emerges from the surface at an angle which is different from 90°.

Abstract: The invention relates to sensors for monitoring a medium, comprising an electromagnetic radiation source and a detector of electromagnetic radiation, the medium being located in the ray path between the electromagnetic radiation source and the detector and the refraction varying when the medium varies. The sensors are characterized by their ease of production. To that end, the electromagnetic radiation source and detector are disposed in at least one housing. Furthermore, either at least one region or at least one component of the housing consists of material which is transparent to electromagnetic radiation, the medium being located in the region or at the component of the housing. At least one wall of the region is so disposed or designed that the radiation for refraction impinges on or emerges from the surface at an angle which is different from 90°.

Abstract: The invention relates to sensors for monitoring a medium comprising at least one electromagnetic radiation source and a detector of electromagnetic radiation, the medium being located in the ray path between the electromagnetic radiation source and the detector. The sensors are characterized by their ease of production. To that end, the electromagnetic radiation source and detector are disposed in at least one housing. Furthermore, the housing comprises two flat wall regions which are arranged at a mutual angle and are transparent to the electromagnetic radiation, such that these wall regions and the medium located thereat form a prism which refracts the electromagnetic radiation. In addition, the detector is at least a one-dimensional sensor comprising photo diodes for the refracted electromagnetic radiation, a spectrum which varies when the medium varies being detectable.