摘要
介绍了一种基于聚合物分散液晶材料的连续调焦电控透镜.在聚合物分散液晶盒的上表面电极上刻蚀圆孔,形成一个非对称电极,在液晶盒上下极板之间,诱发一个非均匀电场,从而引起聚合物分散液晶材料的折射率非均匀分布,形成电控变焦透镜.阐述了聚合物分散液晶可调焦透镜的基本原理,分析了透镜孔径对聚合物分散液晶透镜焦距的影响,在直径3mm和6mm的圆孔条件下,分别测量了透镜焦距随电压的变化关系.结果表明:电压从50V加到170V的过程中,透镜焦距逐渐减短,刻蚀3mm圆孔的聚合物分散液晶盒焦距从1.361 63m到0.429 21m,刻蚀6mm圆孔的聚合物分散液晶盒焦距从1.769 92m到0.548 43m.
An electrically controlled continuously focusing lens was introduced based on Polymer Dispersed Liquid Crystal（PDLC）.Etching a hole on the upper surface of the electrode attaching to the PDLC cell to form an asymmetric electrode,a non-uniform electric field was induced.Then the non-uniform distribution of the refractive index in the PDLC cell was generated and a controlled zoom lens was formed.The basic principle of the focusing lens was also introduced,the effects of the lens aperture on the focal length of the PDLC lens were analyzed,and the relation between the focal length and voltage was measured with the diameter of 3mm and 6mm respectively.The results show that,with voltage ranging from 50Vto 170V,the focal length of the PDLC lens was reduced from 1.361 63mto 0.429 21m in the diameter 3mm or from 1.769 92mto 0.548 43m in the diameter 6mm of the hole.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2014年第4期62-66,共5页
Acta Photonica Sinica
基金
上海市重点学科项目第三期项目(No.S30502)
上海市研究生创新基金项目(No.JWCXSL1202)
上海市人才发展基金(No.2012026)
上海市教委重点科研创新项目(No.14ZZ138)
大学生创新创业训练计划(No.XJ2013070)资助
关键词
光学材料
透镜
液晶聚合物
聚合物分散液晶
连续变焦
电控透镜非对称电极
Optical materials
Lenses
Liquid crystal polymers
Polymer Dispersed Liquid Crystal（PDLC）
Continuous zoom
Electrically controlled lens
Non-uniform electrode
