[1] G. Saavedra, W. D. Furlan, J. A. Monsoriu. Fractal zone plates [J]. Opt. Lett., 2003, 28(12): 971～973

[2] W. D. Furlan, G. Saavedra, J. A. Monsoriu. White-light imaging with fractal zone plates [J]. Opt. Lett., 2007, 32(15): 2109～2111

[3] Jeffrey A. Davis, Laura Ramirez, María Luisa Calvo et al. Focusing properties of fractal zone plates: experimental implementation with a liquid-crystal display [J]. Opt. Lett., 2004, 29(12): 1321～1323

[4] J. A. Monsoriu, G. Saavedra, W. D. Furlan. Fractal zone plates with variable lacunarity [J]. Opt. Express, 2004, 12(18): 4227～4234

[5] O. M. Yero, M. F. Alonso, G. M. Vega et al.. Fractal generalized zone plates [J]. J. Opt. Soc. Am. A, 2009, 26(5): 1161～1166

[6] C. J. R. Sheppard, S. Ledesma, J. Campos et al.. Improved expressions for performance parameters for complex filters [J]. Opt. Lett., 2007, 32: 1713～1715

[7] Linbo Liu, Frédéric Diaz, Liang Wang et al.. Superresolution along extended depth of focus with binary-phase filters for the Gaussian beam [J]. J. Opt. Soc. Am. A, 2008, 25(8): 2095～2101

[8] Wang Haifeng, Gan Fuxi, Chen Zhongyu. A new superresolution element［J］. Acta Optica Sinica, 2001, 21(5): 593～596

[9] Ding Hongping, Li Qinghui, Zou Wenyi. Design of 3-zone amplitude-type superresolution pupil filters［J］. Acta Optica Sinica, 2004, 24(9): 1177～1180

[10] Yun Maojin, Wang Mei, Kong Weijin et al.. Axial focal shift and extended focal depth with tunable filter［J］. Acta Optica Sinica, 2011, 31(3): 0311003