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A novel structure model with different disc-ring radii of liquid crystal lens is proposed, in which liquid crystal director could be controlled by changing the electric field intensity dependence. Then the theory of liquid crystal and the geometric optics are analyzed. By using the finite element method, under the same constant voltage, we obtain the distributions of the electric field intensity at different positions of the liquid crystal layer. Then, the simulation results provide a theoretical guideline for the experimental fabrication. Due to the fact that the electric field intensity at the electrode edges is stronger than that at the circular hole, a shorter focal convergence could be realized by controlling the voltage between the upper and the lower substrates. In this paper, the influences of the electrode size and spacer thickness on the focal length of liquid crystal lens are also discussed experimentally and theoretically. Through optimizing various parameters, a prototype liquid crystal lens with a large zoom range and simple structure is obtained. Its focal length can be controlled to be 75-230 mm in a range of 25 VRMS-250 VRMS.
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Keywords:
- liquid crystal /
- variable focus /
- lens
[1] Ren H W, Fan Y H, Gauza S, Wu S T 2004 Appl. Phys. Lett. 84 4789
[2] Liu Y J, Sun W M, Liu X Q, Yao L S, Lu X H, Xuan L 2012 Acta Phys. Sin. 61 114211(in Chinese) [刘永军, 孙伟民, 刘晓颀, 姚丽双, 鲁兴海, 宣丽 2012 61 114211]
[3] Dai Q, Li Y, Wu R N, Geng Y, Quan W, Li Y Q, Peng Z H, Yao L S 2013 Acta Phys. Sin. 62 044219(in Chinese) [岱钦, 李勇, 乌日娜, 耿岳, 全薇, 李业秋, 彭增辉, 姚丽双 2013 62 044219]
[4] Beeckman J, Neyts K, Vanbrabant J M 2011 Opt. Eng. 50 081202
[5] Liu X, Zhang J, Wu L Y, Gan Y 2011 Chin. Phys. B 20 024211
[6] Sato S 1979 Appl. Phys. 18 167
[7] Ren H W, Wu S T 2006 Opt. Express. 14 11292
[8] Schulein R, Daneshpanah M, Javidi B 2009 Opt. Lett. 34 2012
[9] Shin D, Cho M, Javidi B 2010 Opt. Lett. 35 3646
[10] Mao Y, Wang B, Kawamura M, Sato S 2007 Appl. Phys. Lett. 46 6776
[11] Tang X Z, Zhong D Z, Jian Y X, Lu J G, Xie H P 2013 Acta Phys. Sin. 62 164212(in Chinese) [唐先柱, 钟德镇, 简廷宪, 陆建钢, 谢汉萍 2013 62 164212]
[12] Mao Y, Bin W, Masaru U, Satoshi Y, Shingo T, Maki Ya, Susumu S 2010 Jpn. J. Appl. Phys. 49 100204
[13] Li C H, Jiang H R 2012 Appl. Phys. Lett. 100 231105
[14] Chen M S, Chen P J, Chen M, Lin Y H 2014 Opt. Express 22 011427
[15] Hassanfiroozi A, Huang Y P, Javidi B, Shieh H P 2015 Opt. Express 23 000971
[16] Che J H, Shen C R 2012 Opt. Express 20 4738
[17] Wang Q, He S L 2001 Acta Phys. Sin. 50 926(in Chinese) [王谦, 何赛灵 2001 50 926]
[18] Guo Y K 2005 Optics (Beijing: Higher Education Press) p236 (in Chinese) [郭永康 2005 光学 (北京: 高等教育出版社) 第236页]
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[1] Ren H W, Fan Y H, Gauza S, Wu S T 2004 Appl. Phys. Lett. 84 4789
[2] Liu Y J, Sun W M, Liu X Q, Yao L S, Lu X H, Xuan L 2012 Acta Phys. Sin. 61 114211(in Chinese) [刘永军, 孙伟民, 刘晓颀, 姚丽双, 鲁兴海, 宣丽 2012 61 114211]
[3] Dai Q, Li Y, Wu R N, Geng Y, Quan W, Li Y Q, Peng Z H, Yao L S 2013 Acta Phys. Sin. 62 044219(in Chinese) [岱钦, 李勇, 乌日娜, 耿岳, 全薇, 李业秋, 彭增辉, 姚丽双 2013 62 044219]
[4] Beeckman J, Neyts K, Vanbrabant J M 2011 Opt. Eng. 50 081202
[5] Liu X, Zhang J, Wu L Y, Gan Y 2011 Chin. Phys. B 20 024211
[6] Sato S 1979 Appl. Phys. 18 167
[7] Ren H W, Wu S T 2006 Opt. Express. 14 11292
[8] Schulein R, Daneshpanah M, Javidi B 2009 Opt. Lett. 34 2012
[9] Shin D, Cho M, Javidi B 2010 Opt. Lett. 35 3646
[10] Mao Y, Wang B, Kawamura M, Sato S 2007 Appl. Phys. Lett. 46 6776
[11] Tang X Z, Zhong D Z, Jian Y X, Lu J G, Xie H P 2013 Acta Phys. Sin. 62 164212(in Chinese) [唐先柱, 钟德镇, 简廷宪, 陆建钢, 谢汉萍 2013 62 164212]
[12] Mao Y, Bin W, Masaru U, Satoshi Y, Shingo T, Maki Ya, Susumu S 2010 Jpn. J. Appl. Phys. 49 100204
[13] Li C H, Jiang H R 2012 Appl. Phys. Lett. 100 231105
[14] Chen M S, Chen P J, Chen M, Lin Y H 2014 Opt. Express 22 011427
[15] Hassanfiroozi A, Huang Y P, Javidi B, Shieh H P 2015 Opt. Express 23 000971
[16] Che J H, Shen C R 2012 Opt. Express 20 4738
[17] Wang Q, He S L 2001 Acta Phys. Sin. 50 926(in Chinese) [王谦, 何赛灵 2001 50 926]
[18] Guo Y K 2005 Optics (Beijing: Higher Education Press) p236 (in Chinese) [郭永康 2005 光学 (北京: 高等教育出版社) 第236页]
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