Measuring path planning and surface fitting technology for non-axisymmetric aspheric lens

Jiang Guo; Yinbiao Guo; Jian Wang; Tianzheng Zhang

doi:10.1117/12.819554

31 December 2008 Measuring path planning and surface fitting technology for non-axisymmetric aspheric lens

Jiang Guo, Yinbiao Guo, Jian Wang, Tianzheng Zhang

Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 71300I (2008) https://doi.org/10.1117/12.819554
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China

Abstract

Path planning and surface fitting are the key technologies in the non-axisymmetric aspheric measuring. In accordance with the requirements of high-precision compensation machining for parallel grinding of non-axisymmetric aspheric lens, in this paper, measuring paths are planned based on the machining error. The measuring system is designed and carried out. The nonlinear least square fitting method is adopted in surface fitting for the non-axisymmetric aspheric lens and the surface quality of optical lens is effectively estimated by the fitting error. The experiment result indicates that the fitting residual error is in the 10^-3mm magnitude order, which can meet the request of compensation machining. By comparing with the theory equation, the original data for compensation machining can be obtained, and the accuracy of compensation machining is well controlled.

Citation Download Citation

Jiang Guo, Yinbiao Guo, Jian Wang, and Tianzheng Zhang "Measuring path planning and surface fitting technology for non-axisymmetric aspheric lens", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71300I (31 December 2008); https://doi.org/10.1117/12.819554

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