Chinese Optics Letters, 2010, 8 (2): 159, Published Online: Mar. 5, 2010
Pupil design based on Fisher information optimization to extend field depth in practical optical system Download: 755次
波前编码 Fisher信息量 相位板 110.0110 Imaging systems 100.0100 Image processing 220.0220 Optical design and fabrication
Abstract
Wavefront coding (WFC) is used to extend the field depth of an incoherent optical system by employing a phase mask on the pupil. We uses a Fisher information (FI) metric based optimization method to design a phase mask by taking the modulation transfer function (MTF) of the practical optical system into consideration. This method can modulate the wavefront so that the point spread function and optical transfer function are insensitive to the object distance. The simulation results show that the optimized phase mask based on the proposed method can further improve the defocusing image quality while maintaining the focusing image quality.
Qinxiao Liu, Tingyu Zhao, Yanping Chen, Wenzi Zhang, Feihong Yu. Pupil design based on Fisher information optimization to extend field depth in practical optical system[J]. Chinese Optics Letters, 2010, 8(2): 159.