Acta Optica Sinica, Vol. 40, Issue 24, 2412002 (2020)
Evaluation of Optical Performance of Free-Form Surface Imaging System
Chen Yuqiang, Zhang Xiaodong, and Liu Xianlei*
- State Key Laboratory of Precision Measuring Technology & Instruments, Centre of Micro Nano Manufacturing Technology, Tianjin University, Tianjin 300072, China
The wavefront errors (WFE) of optical freeform surfaces are complex, diverse and asymmetric. When the peak valley values of WFE meet the requirements, the corresponding optical modulation transfer function may not meet the requirements. Therefore, it is necessary to obtain the main optical performance parameters for evaluation. However, there is no special software to realize the mutual conversion between optical performance parameters. Based on the theory of Fourier optics and phase retrieval, the basic index evaluation system of optical performance is established in this work. The multi parameter evaluation of optical performance is realized by measuring a single optical performance parameter. The measurement cost is reduced and the measurement efficiency is improved. The correctness of the system is verified by simulation and experiment. The research results can provide theoretical guidance for surface error compensation and optical quality controllable manufacturing of free-form imaging surface imaging optical system.
Please Enter Your Email: