一种优化波前编码系统相位板参数的新方法

范志刚; 付强; 陈守谦; 吕天宇

一种优化波前编码系统相位板参数的新方法

哈尔滨工业大学空间光学工程研究中心,黑龙江哈尔滨150001

详细信息

通讯作者:
范志刚(1966-)，男，黑龙江嫩江人，教授，博士生导师，主要从事精密光电测试技术和光学遥感方面的教学和研究工作。

中图分类号: O435.2
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- 刊出日期: 2011-01-14

ANew method for pupil phase mask optimization in wavefront coding system

Harbin Institute of Technology,Research Center for Space Optical Engineering,Harbin 150001,China

摘要

摘要: 根据波前编码系统的设计理论，在兼顾图像恢复能力的基础上，提出利用不同离焦距离的点扩散函数与焦面处的点扩散函数之间的希尔伯特空间角作为成像特性一致性的评价函数，结合遗传算法，对扩大景深的波前编码成像系统的相位板参数进行优化。分别在空间域和频率域上分析应用波前编码技术前后光学系统的成像特性，并利用最小二乘数字滤波器对中间模糊图像进行复原。仿真实验结果表明：在三次相位板上应用此方法获得的最佳相位板参数使波前编码系统焦深扩展了10倍。
- 波前编码 /
- 相位板参数优化 /
- 希尔伯特空间角 /
- 点扩散函数
Abstract: According to the design theory of wavefront coding, taking the imaging restorability into consideration, we used the angle in Hilbert space between infocus PSF and several defocus PSFs as an evaluation for making the shape and intensity of point spread function (PSF) insensitive with defocus over a wide range of defocus parameter values. The angle in Hilbert space is capable of evaluating similarity of the PSFs of different defocus parameter values and was used to optimize the design of phase mask in real wavefront coding systems. A doublet-wavefront coding system was designed based on a finite focused doublet system. The simulation results show that the phase mask can extend the depth of focus by an order of magnitude more than that of Hopkins defocus criterion. Better and more stable imaging quality over a large depth of focus is acquired with the optimized pupil phase mask.
- wavefront coding /
- parameter optimization /
- phase mask /
- angle in Hilbert space

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参考文献(1)

［1］DOWSKI E R, CATHEY W T. Extending depth of field through wavefront coding［J］. Appl.Opt.,1995,34(10):1895-1866.［2］CATHEY W T, DOWSKI E R. New paradigm for imaging systems［J］. Appl.Opt.,2002,41(29):6086-6092.［3］NARAYANSWAMY R, SILVEIRA PAULO E X. Iris recognition at adistance with expanded imaging volume［J］. SPIE, 2006,6202:62020G-1-62020G-12.［4］SHERIF S S, DOWSKI E R, CATHEY W T. Lo-garithmic phases filter to extend the depth of focus of incoherent hybrid imaging systems［J］. SPIE, 2001,4471:272-279.［5］MEZOUARIS, HARVEY A R. Primary aberrations alleviated with phase pupil filters［J］. SPIE,2002,4768:21-31.［6］MEZOUARIS, MUYO G, HARVEY A R. Amp-litude and phase filters for mitigation of defocus and third-order aberrations［J］. SPIE,2004,5249:238-248.［7］CASTRO A, OJEDA-CASTANEDA J. Increased depth of field with phase only filters: ambiguity function［J］. SPIE,2005,5827:1-11.［8］PRASAD S, TORGERSEN T, PAUCA V P, et al. Engineering the pupil phase to improve image quality［J］. SPIE, 2003,5108:1-12.［9］张文字，陈燕萍，赵廷玉，等. 一种基于OTF稳定性的波前编码相位板优化方法［J］.光子学报，2007，36(11):2017-2020.ZHANG Wen-zi, CHEN Yan-ping, ZHAO Ting-yu, et al. Simple OTF stability based method for pupil phase mask’s optimization in wavefront coding system［J］. Acta Photonica Sinica, 2007,36(11):2017-2020.(in Chinese with an English abstract)［10］范志刚，肖昊苏，高豫强.气动热环境下高速飞行器光学头罩特性分析［J］.应用光学，2009，30(3):361-365.FAN Zhi-gang, XIAO Hao-su, GAO Yu-qiang, Characteristics analysis of highspeed aero craft optical dome in aerodynamic heting environment［J］. Journal of Applied Optics, 2009，30(3):361-365.(in Chinese with an English abstract)

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一种优化波前编码系统相位板参数的新方法

通讯作者:
范志刚(1966-)，男，黑龙江嫩江人，教授，博士生导师，主要从事精密光电测试技术和光学遥感方面的教学和研究工作。

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ANew method for pupil phase mask optimization in wavefront coding system

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一种优化波前编码系统相位板参数的新方法

通讯作者: 范志刚(1966-)，男，黑龙江嫩江人，教授，博士生导师，主要从事精密光电测试技术和光学遥感方面的教学和研究工作。

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出版历程

ANew method for pupil phase mask optimization in wavefront coding system

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出版历程

目录

相关数据库

广告合作

友情链接

帮助中心

通讯作者:
范志刚(1966-)，男，黑龙江嫩江人，教授，博士生导师，主要从事精密光电测试技术和光学遥感方面的教学和研究工作。