[1] DAUGMAN J G. How iris recognition works［J］. IEEE Transaction on Circuits and Systems for Video Technology, 2004, 14(1): 21-30.

[2] NARAYANSWAMY R, SILVERIRA P E X, SETTY H, et al. Extended depth-of-field iris recognition system for a workstation environment［C］. SPIE, 2005, 5779: 41-50.

[3] DAUGMAN J G. High confidence visual recognition of person by a test of statistical independence［J］. IEEE Transaction on PAMI, 1993, 15(1): 1148-1161.

[4] BARWICK D S. Increasing the information acquisition volume in iris recognition systems［J］. Applied Optics, 2008, 47(26): 4684-4691.

[5] WANG Xiang-jun, ZHANG Min, DENG Xiao-bei, et al. Design of a system for non-contact iris image capture［J］.Opto-Electronic Engineering, 2005, 32(6): 35-38.

[6] LIN Bin, WANG Lin-fen, CAO Xiang-qun. Study of iris image capturing system for iris recognition［J］. Laser&Infrared, 2002, 32(5): 347-349.

[7] WANG Lin-feng, LIN Bin. A portable personnel verification system based on iris recognition technology［J］. Journal of Opto Electronics·Laser, 2001, 12(10): 1076-1078.

[8] YUAN Wei-qi, JI Shuang. Design of iris image acquisition system［J］. Instrument Technique and Sensor, 2009, 25(10-2): 21-23.

[9] VAN DER GRACHT J, PAUCA V P, SETTY H, et al. Iris recognition with enhanced depth-of-field image acquisition［C］. SPIE5438, Visual Information Processing XIII, Orlando, FL, USA, 2004: 120-129.

[10] NARAYANSWAMY R, JOHNSONG E, SILVEIRA P E X, et al. Extending the imaging volume for biometric iris recognition［J］. Applied Optics, 2005, 44(5): 701-712.

[11] DOWSKI E R, CATHEY W T. Extended depth of field through wave-front coding［J］. Applied Optics, 1995, 34(10): 1859-1866.

[12] APOULIS A. Ambiguity function in Fourier optics［J］. Journal of The Optical Society of America, 1974, 64(6): 779-788.

[13] SHERIF S, CATHEY W T, DOWSKI E R.Phase plate to extend the depth of field of incoherent hybrid imaging systems［J］. Applied Optics, 2004, 43(13): 2709-2721.

[14] FAN Zhi-gang, CHEN Shou-qian,Chang Hong, et al. Non-axial characteristics of strehl ratio of cubic phase mask in wavefront coding system［J］. Acta Optica Sinica, 2011, 31(6): 1-9.

[15] 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 Photinica Sinica, 2007, 36(11): 2017-2021

[16] ZHAO T, YE Z, ZHANG W, et al. Field depth extension of 2D barcode scanner based on wavefront coding and Projection algorithm［C］. SPIE, 2007, 6837: 1-11.

[17] HSIEH S H, YANG H W , HUANG S H, et al. Biometric iris image acquisition system with wavefront coding technology［C］. SPIE, 2013, 8907: 890730.

[18] PRASAD S, TORGERSEN T C, PAUCA V P, et al. Engineering the pupil phase to improve image quality［C］. SPIE, 2003, 5108: 1-12.

[19] CASTRO A, OJEDA C J. Increased depth of field with phase-only filters: ambiguity function ［C］. SPIE, 2005, 582: 1-11.