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Pupil design based on Fisher information optimization to extend field depth in practical optical system |
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| Authors: | Qinxiao Liu Tingyu Zhao Yanping Chen Wenzi Zhang Feihong Yu State Key Laboratory of Modern Optical Instrumentation Optical Engineering |
| Institution: | Qinxiao Liu~1,Tingyu Zhao~1,Yanping Chen~2,Wenzi Zhang~1,, Feihong Yu 1 State Key Laboratory of Modern Optical Instrumentation,Optical Engineering Department,Zhejiang University,Hangzhou 310027,China 2 Physics Department,College of Science,Ningbo University of Technology,Ningbo 315211,China |
| 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 m... |
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