Contactless measuring device used for vehicles, especially rail vehicles, has elements having surfaces partially provided with a self-cleaning coating

摘要

Contactless measuring device has elements having surfaces which receive, emit, reflect or allow through light signals and/or electromagnetic radiation. The surface (86) is partially provided with a self-cleaning coating (92) having a hydrophobic micro-rough surface structure which allows liquids to bead (Lotus effect). Preferred Features: The coating contains a material based on ceramic and/or diamond, preferably a glass ceramic, especially a Li-Al silicate glass ceramic or an Mg-Al silicate glass ceramic. The ceramic component is SiO2 and Al2O3, and the glass component contains MgO, K2O, ZnO, Na2O, Fe2O3, Li2O, BaO, P2O5 and/or TiO2.