物理学报Issue(18)：164-170,7.DOI:10.7498/aps.64.184212
大变焦范围电调谐液晶变焦透镜的研究
Liquid crystal lens with large-range electrically controllable variable focal length
摘要
Abstract
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.关键词
向列相液晶/可变焦距/透镜Key words
liquid crystal/variable focus/lens引用本文复制引用
尹向宝,刘永军,张伶莉,吕月兰,霍泊帆,孙伟民..大变焦范围电调谐液晶变焦透镜的研究[J].物理学报,2015,(18):164-170,7.基金项目
国家自然科学基金(批准号: 61107059, 61077047, 61308052, U1531102)、高等学校学科创新引智计划(批准号: B13015)、黑龙江省教育厅科学技术研究项目(批准号: 12511493)和黑龙江省自然科学基金(批准号: QC2015069)资助的课题. Project supported by the National Natural Science Foundation of China (Grant Nos. 61107059, 61077047, 61308052, U1531102), the Fundamental Research Funds for the Central Universities, China (Grant No. B13015) and the Science and Technology Research Project of Education Bureau of Heilongjiang Province, China (Grant No. 12511493), and the Natural Science Foundation of Heilongjiang Province, China (Grant No. QC2015069). （批准号: 61107059, 61077047, 61308052, U1531102）
