Imaging characteristics of logarithmic axicon for application in compound eye system

Cheng Chun; Wang Keyi; Cao Zhaolou; Ma Mengchao

Logarithmic axicon (LA) was proposed to overcome the defocus in the spherical compound eye imaging utilizing its focal line. The depth of field of LA was designed to meet the requirements of all the channels of the compound eye. On-axis and off-axis characteristics of LA were studied based on numerical simulation. Mass production of LA was achieved by diamond cutting and molding technology. Experimental results show that the on-axis point spread function(PSF) keeps constant along the propagation, while the off-axis PSF is cross-shaped. The intersection of the cross can be extracted and used to determine the spot centroid in off-axis imaging. The proposed method is helpful to eliminate the intrinsic defocus effects of spherical lens and improve the positioning accuracy and imaging quality of the spherical compound eye system.

1. Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230027,China

Received Date: 2014-08-11

Rev Recd Date: 2014-09-20

Publish Date: 2015-04-25

Key words:

Abstract: Logarithmic axicon (LA) was proposed to overcome the defocus in the spherical compound eye imaging utilizing its focal line. The depth of field of LA was designed to meet the requirements of all the channels of the compound eye. On-axis and off-axis characteristics of LA were studied based on numerical simulation. Mass production of LA was achieved by diamond cutting and molding technology. Experimental results show that the on-axis point spread function(PSF) keeps constant along the propagation, while the off-axis PSF is cross-shaped. The intersection of the cross can be extracted and used to determine the spot centroid in off-axis imaging. The proposed method is helpful to eliminate the intrinsic defocus effects of spherical lens and improve the positioning accuracy and imaging quality of the spherical compound eye system.

HTML

Reference (25)

[1]
[2]	Jeong K, Kim J, Lee L. Biologically inspired artificial compound eyes[J]. Scinece, 2006, 312(28): 557-561.
[3]
[4]	Duparre J, Radtke D, Tunnermann A. Spherical artificial compound eye captures real images[C]//SPIE, 2007, 6466: 1-9.
[5]	Lu L M, Wang G F, Zhang K, et al. Research on multi-mode missile based on ommateum[J]. Infrared Technology, 2001, 23(5): 9-10. (in Chinese)
[6]
[7]
[8]	Zhang Hongxin, Lu Zhenwu, Wang Ruiting, et al. Study on curved compound eye imaging system[J]. Optics and Precision Engineering, 2006, 14(3): 346-350. (in Chinese)
[9]
[10]	Cao Zhaolou, Zhan Zhenxian, Wang Keyi. Structural design of spherical compound eye lens for moving object detection[J]. Infrared and Laser Engineering, 2011, 40(1): 70-73. (in Chinese)
[11]	Guo F, Wang K Y, Yan P Z, et al. Calibration of compound eye system for target positioning with large field of view[J]. Opt Precision Eng, 2012, 20(5): 913-920. (in Chinese)
[12]
[13]
[14]	Mcleod J H. The axicon: a new type of optical element[J]. Opt Soc Am, 1954(44): 592-597.
[15]	Arimoto R, Saloma C, Tanaka T, et al. Imaging properties of axicon in a scanning optical system[J]. Appl Opt, 1992, 31(31): 6653-6657.
[16]
[17]
[18]	Kim J A, Lee K I, Noh H R, et al. Atom trap in an axicon mirror[J]. Opt Lett, 1997, 22(2): 117-119.
[19]
[20]	Davidson N, Friesem A A, Hasman E. Holographic axilens: high resolution and long focal depth[J]. Opt Lett, 1991, 16(7): 523-525.
[21]	Sochacki J, Kolodziejcayk A, Jaroszewica Z, et al. Nonparaxial design of generalized axicons[J]. Appl Opt, 1992, 31(25): 5326-5330.
[22]
[23]
[24]	Sochacki J, Bara S, Jaroszewicz Z, et al. Phase retardation of the uniform-intensity axilens[J]. Opt Lett, 1992, 17(1): 7-9.
[25]	Golub I, Chebbi B, Shaw D, et al. Characterization of a refractive logarithmic axicon[J]. Opt Lett, 2010, 35(16): 2828-2830.

Imaging characteristics of logarithmic axicon for application in compound eye system

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views