The Research Of Large Asphereic Optics Mirror For Alignment And Measurment

Large aspheric mirror is the most importent element of the large,highe quality optics system,the manufacture steps. Interferometric and design of mirror are related techniques. The former is a whole-field non-destructive technique to measure the optical surface, and it is widely used in the measuring of highe quality mirror , especially for diagnosis the error of the mirror; the latter finds its application in measuring the topography of a surface of the mirror, its changes over time, and changes of the characteristics of a surface. Both of them take interferogram as their main object of research, and both obtain the last physical values for measurement through interferomgram processing.This dissertation is based on a thorough exploration into interferograms processing techniques as a solution to the problem mentioned. Its originality is observed in the following 2 aspects: Method of MORE Interferograms. In order to overcome the major shortcoming of the existing fringe patterns generation methods .the second is the exploration of the design.