

浏览全部资源
扫码关注微信
电子科技大学 光电科学与工程学院, 四川 成都 611731
Received:10 May 2022,
Revised:27 May 2022,
Published:05 August 2022
移动端阅览
Xin-cheng ZHOU, Qi-pu TANG, Guang-yong LI, et al. Properties of four voltage driven liquid crystal variable diaphragm[J]. Chinese journal of liquid crystals and displays, 2022, 37(8): 1079-1085.
Xin-cheng ZHOU, Qi-pu TANG, Guang-yong LI, et al. Properties of four voltage driven liquid crystal variable diaphragm[J]. Chinese journal of liquid crystals and displays, 2022, 37(8): 1079-1085. DOI: 10.37188/CJLCD.2022-0162.
为了实现适用性更好的尺寸、椭圆率和中心可变的光阑,本文设计了一种基于四路电压驱动的液晶器件的可变光阑,通过数值计算和实验测试对液晶器件有效光阑区域的特性进行研究。通过数值计算仿真器件分布特性,得到器件不同工作状态的电压条件及光阑中心移动方法的仿真结果;通过光路搭建测试器件的光阑特性,达到了圆形光阑和椭圆光阑分布的效果;对比了移动电场后器件中心的变化与仿真结果。测试结果表明:通过改变电压的幅值和相位的方式可以控制液晶光阑的工作状态。在上下基板电极频率不同、初始相位差不同的条件下基本实现了不同椭圆率的光阑效果。在有效区域内,中心平移测量实际值与仿真结果的平均误差为3.33%。器件基本满足不同孔径通光和场景内移动光阑中心的需求。
A novel low-voltage driven liquid crystal diaphragm driven by four-channel voltage is designed and prepared to realize the elliptical ratio, scale and center variable diaphragm with better applicability. The characteristics of the circular effective diaphragm region of the liquid crystal device are tested by experiment and numerical simulation software. Firstly, through numerical calculation and simulation of the distribution characteristics of the device, the simulation results of the voltage conditions of the device in different working states and the method of moving the center of the diaphragm are obtained. Then, the diaphragm characteristics of the device are tested through the optical path to achieve the distribution effect of the circular diaphragm and the elliptical diaphragm. Finally, the change of the optical axis of the device after moving the electric field is compared with the simulation results. The test results show that the working state of the liquid crystal diaphragm can be controlled by changing the amplitude and phase of the voltage. Under the conditions of different frequency of upper and lower substrate electrodes and different initial phase difference, the elliptical aperture transmission function is basically realized. In the effective region, the average error between the actual value of center translation measurement and the simulation result is 3.33%. The device basically meets the requirements of different aperture pass and moving aperture center in the scene.
高爱梅 , 李星辰 , 王婷婷 . 光学系统设计中的光阑应用分析 [J]. 电子工业专用设备 , 2019 , 48 ( 2 ): 24 - 27 . doi: 10.3969/j.issn.1004-4507.2019.02.007 http://dx.doi.org/10.3969/j.issn.1004-4507.2019.02.007
GAO A M , LI X C , WANG T T . Analysis of diaphragm applied to optic system design [J]. Equipment for Electronic Products Manufacturing , 2019 , 48 ( 2 ): 24 - 27 . (in Chinese) . doi: 10.3969/j.issn.1004-4507.2019.02.007 http://dx.doi.org/10.3969/j.issn.1004-4507.2019.02.007
朱新新 , 王辉 , 杨庆涛 , 等 . 一种环形光阑 : 中国 , 206420589U [P]. 2017-08-18 .
ZHU X X , WANG H , YANG Q T , et al . Annular diaphragm : CN , 206420589U [P]. 2017-08-18 . (in Chinese)
韩天云 . 方形光阑( 01) :中国, 303672064S [P]. 2016-05-11 . doi: 10.12677/tcm.2016.51002 http://dx.doi.org/10.12677/tcm.2016.51002
HAN T Y . Square diaphragm (01) : CN, 303672064S [P]. 2016-05-11 . (in Chinese) . doi: 10.12677/tcm.2016.51002 http://dx.doi.org/10.12677/tcm.2016.51002
MCCANN T E , DEGROOT J S . Acceleration of solid macro-particles by laser produced ablation [J]. Bulletin of the American Physical Society , 1977 , 22 ( 9 ): 1205 - 1206 .
谢琼碧 . 一款新型可变光阑的设计 [J]. 机电技术 , 2015 ( 3 ): 17 - 18 . doi: 10.3969/j.issn.1672-4801.2015.03.006 http://dx.doi.org/10.3969/j.issn.1672-4801.2015.03.006
XIE Q B . A new type of variable aperture design [J]. Mechanical & Electrical Technology , 2015 ( 3 ): 17 - 18 . (in Chinese) . doi: 10.3969/j.issn.1672-4801.2015.03.006 http://dx.doi.org/10.3969/j.issn.1672-4801.2015.03.006
汪洋 , 陈安森 . 一种电控可变光阑杜瓦 : 中国 , 202886705U [P]. 2013-04-17 .
WANG Y , CHEN A S . Electrically-controlled variable diaphragm Dewar : CN , 202886705U [P]. 2013-04-17 . (in Chinese)
MURADE C U , OH J M , ENDE DVAN DEN , et al . Electrowetting driven optical switch and tunable aperture [J]. Optics Express , 2011 , 19 ( 16 ): 15525 - 15531 . doi: 10.1364/oe.19.015525 http://dx.doi.org/10.1364/oe.19.015525
赵怀学 , 赵建科 , 段亚轩 , 等 . 高精度电控光阑装置 : 中国 , 104749767B [P]. 2017-05-03 .
ZHAO H X , ZHAO J K , DUAN Y X , et al . High-precision type electric control diaphragm device : CN , 104749767B [P]. 2017-05-03 . (in Chinese)
HAAN K , CHUN K . Tunable aperture controlled by thermal expansion of copper beams [C]// 2017 IEEE AFRICON . Cape Town : IEEE , 2017 . doi: 10.1109/afrcon.2017.8095707 http://dx.doi.org/10.1109/afrcon.2017.8095707
SATO S . Liquid-crystal lens-cells with variable focal length [J]. Japanese Journal of Applied Physics , 1979 , 18 ( 9 ): 1679 - 1684 . doi: 10.1143/jjap.18.1679 http://dx.doi.org/10.1143/jjap.18.1679
KONFORTI N , MAROM E , WU S T . Phase-only modulation with twisted nematic liquid-crystal spatial light modulators [J]. Optics Letters , 1988 , 13 ( 3 ): 251 - 253 . doi: 10.1364/ol.13.000251 http://dx.doi.org/10.1364/ol.13.000251
王芬 , 谭炳辉 , 潘雪丰 , 等 . 一种基于聚合物分散液晶的荧光开关研究 [J]. 光电子·激光 , 2011 , 22 ( 4 ): 520 - 523 .
WANG F , TAN B H , PAN X F , et al . Study on a kind of fluorescent switch based on PDLC [J]. Journal of Optoelectronics·Laser , 2011 , 22 ( 4 ): 520 - 523 . (in Chinese)
NOSE T , SATO S . A liquid crystal microlens obtained with a non-uniform electric field [J]. Liquid Crystals , 1989 , 5 ( 5 ): 1425 - 1433 . doi: 10.1080/02678298908027780 http://dx.doi.org/10.1080/02678298908027780
巩伟兴 , 于涛 , 王伟郅 , 等 . 方块电阻阶梯分布的模式控制液晶透镜的仿真 [J]. 液晶与显示 , 2020 , 35 ( 9 ): 908 - 913 . doi: 10.37188/YJYXS20203509.0908 http://dx.doi.org/10.37188/YJYXS20203509.0908
GONG W X , YU T , WANG W Z , et al . Simulation of modal control liquid crystal lens with step sheet resistance distribution [J]. Chinese Journal of Liquid Crystals and Displays , 2020 , 35 ( 9 ): 908 - 913 . (in Chinese) . doi: 10.37188/YJYXS20203509.0908 http://dx.doi.org/10.37188/YJYXS20203509.0908
OOBA Y , SUGIHARA S , SHIWA S . Basic study of a bright area-modulative liquid crystal cell [C]// Proceedings of SPIE 0639 , Ⅱ . Orlando : SPIE , 1986 : 47 - 55 . doi: 10.1117/12.964323 http://dx.doi.org/10.1117/12.964323
0
Views
253
下载量
0
CSCD
Publicity Resources
Related Articles
Related Author
Related Institution
京公网安备11010802024621