SCRATCH RESISTANT COATING STRUCTURE AND USE AS OPTICAL FILTER OR UV-BLOCKING FILTER

摘要

The disclosed invention consists of optical filter and/or UV-blocking filter coating structures with tuned light absorption edge, where beside the tunability of the absorption edge for different use a scratch resistant coating for use in different technical fields is achieved. Therefore the coating structure comprises a layer in the form of a ternary Al-A-N system, where A is at least one element of the group 14 of the periodic table, namely Si, Ge or Sn. In another embodiment a quarternary Al-A-O-N is used.