Quantitatively investigating error correction ability in frequency domain is important for computer controlled optical surfacing (CCOS) process to correct different spatial frequency errors. Based on the mathematical model coherence between filtering and material removal process of CCOS, a method is proposed to quantitatively evaluate the correction ability of CCOS process. A generalized model named normalized smoothing spectral function (SSF) will be established combine convolution model of CCOS and power spectral density (PSD) function. A set of polishing experiments are performed to calculate SSF curves and validate SSF model. By comparing the results of SSF curve with PSD curve and surface figure, it reveals that SSF curve can quantitatively indicate the correction ability of CCOS process for different spatial frequency errors. (C) 2014 The Japan Society of Applied Physics
1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China
Wang, Jia,Fan, Bin,Wan, Yongjian,et al. A Method to Evaluate Error Correction Ability of Computer Controlled Optical Surfacing Process[J]. OPTICAL REVIEW,2014,21(3):280-285.