Light field imaging based on electrically tunable nematic liquid crystal micro lens array

被引：0

作者：

Hui, Li ^{[1
,2
,4
]}

Jing, Peng ^{[1
,4
]}

Fan, Pan ^{[3
]}

Wu Yuntao ^{[1
,4
]}

Zhang Yanduo ^{[1
,4
]}

Xie Xiaolin ^{[2
]}

机构：

[1] Wuhan Inst Technol, Sch Comp Sci & Engn, 693 Xiongchu Ave, Wuhan 430073, Hubei, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China

[3] Wuhan Inst Technol, Coll Post & Telecommun, 693 Xiongchu Ave, Wuhan 430073, Hubei, Peoples R China

[4] Hubei Key Lab Intelligent Robot, 693 Xiongchu Ave, Wuhan 40073, Hubei, Peoples R China

来源：

FOURTH SEMINAR ON NOVEL OPTOELECTRONIC DETECTION TECHNOLOGY AND APPLICATION | 2018年 / 10697卷

基金：

中国国家自然科学基金;

关键词：

Light field imaging; liquid crystal; micro lens array;

D O I：

10.1117/12.2309934

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A light field imaging system based on electrically tunable nematic liquid crystal (LC)-micro lens array (MLA) is proposed. In this system, a LC-MLA is utilized to replace the conventional glass MLA. The LC-MLA has an advantage of electrically controlled without any mechanical movements. This feature could extend depth of field (DOF) of the LC-MLA. In the measurements, the relationship between the external applied voltage and the focal length of the LC-MLA is discussed. The point spread function (PSF) of the LC-MLA is given. An interesting experiment for measuring the direction of the incident light is presented. Those measurements show that the proposed LC-MLA has greatly potential in light field imaging system.

引用

页数：7

共 13 条

[1] Synthetic-aperture imaging laser radar: laboratory demonstration and signal processing [J].

Beck, SM ;

Buck, JR ;

Buell, WF ;

Dickinson, RP ;

Kozlowski, DA ;

Marechal, NJ ;

Wright, TJ .

APPLIED OPTICS, 2005, 44 (35) :7621-7629

[2] Dielectrically actuated liquid lens [J].

Cheng, Chih-Cheng ;

Yeh, J. Andrew .

OPTICS EXPRESS, 2007, 15 (12) :7140-7145

[3] LIQUID-CRYSTAL LENS REVIEW [J].

FOWLER, CW ;

PATERAS, ES .

OPHTHALMIC AND PHYSIOLOGICAL OPTICS, 1990, 10 (02) :186-194

[4] Synthetic Fourier transform light scattering [J].

Lee, KyeoReh ;

Kim, Hyeon-Don ;

Kim, Kyoohyun ;

Kim, Youngchan ;

Hillman, Timothy R. ;

Min, Bumki ;

Park, YongKeun .

OPTICS EXPRESS, 2013, 21 (19) :22453-22463

[5] A Review of Electrically Tunable Focusing Liquid Crystal Lenses [J].

Lin, Hung-Chun ;

Chen, Ming-Syuan ;

Lin, Yi-Hsin .

TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS, 2011, 12 (06) :234-240

[6] Liquid-crystal lens with a focal length that is variable in a wide range [J].

Mao, Y ;

Bin, W ;

Sato, S .

APPLIED OPTICS, 2004, 43 (35) :6407-6412

[7] 3D Vision-based Security Monitoring for Railroad Stations [J].

Park, Youngtae ;

Lee, Daeho .

JOURNAL OF THE OPTICAL SOCIETY OF KOREA, 2010, 14 (04) :451-457

[8] Adaptive dielectric liquid lens [J].

Ren, Hongwen ;

Xianyu, Haiqing ;

Xu, Su ;

Wu, Shin-Tson .

OPTICS EXPRESS, 2008, 16 (19) :14954-14960

[9] LIQUID-CRYSTAL LENS-CELLS WITH VARIABLE FOCAL LENGTH [J].

SATO, S .

JAPANESE JOURNAL OF APPLIED PHYSICS, 1979, 18 (09) :1679-1684

[10]

Wilburn B. S., 2001, Proceedings of the SPIE - The International Society for Optical Engineering, V4674, P29, DOI 10.1117/12.451074

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