Étude des surfaces optiques obtenues par polissage à mouvement vibratoire

Abstract

New techniques for the preparation of optical components are currently being used to achieve very high quality surfaces. The surfaces are treated by polishing, cleaning and then undergo a coating. This thesis deals with the development of a vibratory polishing process using a tool based on the magnetostrictive principle. Some notions of polishing are presented to explain the reason for the search for a new method. A finite element analysis verifies the behavior of the polished surface. Experiments are performed on different optical surfaces. Measurements of process vibrations and evaluation of their impact on the process results will improve the fundamental understanding of the material removal mechanisms and provide possibilities for process control and statistical process monitoring. Thin film deposition is required for the protection of the optical surfaces obtained in this study.