Pupil design based on Fisher information optimization to extend field depth in practical optical system
Chinese Optics Letters, Vol. 8, Issue 2, pp. 159-161 (2010)
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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.
© 2010 Chinese Optics Letters
OCIS Codes
(100.0100) Image processing : Image processing
(110.0110) Imaging systems : Imaging systems
(220.0220) Optical design and fabrication : Optical design and fabrication
Citation
Qinxiao Liu, Tingyu Zhao, Yanping Chen, Wenzi Zhang, and Feihong Yu, "Pupil design based on Fisher information optimization to extend field depth in practical optical system," Chin. Opt. Lett. 8, 159-161 (2010)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-8-2-159
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