Metal-dielectric coatings are finding more and more new applications in coatings technologies. In comparison to all-dielectic coatings, the use of metal layer gives several benefits. For example, using such material combination it is possible to prepare optical coatings in less layers and with advanced properties. In our resent publications, it was demostrated several possibilitties of metal-dielectric coatigns designs and applications. The beam-splitting and sensor elements were investigated. Nevertheless, futher optimization of the preparation conditions and coating structure might be done. The particular PhD theses will be related to the optimization of the preparation process, optimization of the coatings structure and the final optical element analyzing.