文献类型：期刊文献

英文题名：Liquid crystal Pancharatnam-Berry phase lens with spatially separated focuses

作者：Zhou, Yaqin[1];Yin, Yue[1];Yuan, Yide[1];Lin, Tiegang[1];Huang, Huihui[1];Yao, Lishuang[2];Wang, Xiaoqian[3];Tam, Alwin M. W.[4];Fan, Fan[1];Wen, Shuangchun[1]

机构：[1]Hunan Univ, Key Lab Micro Nanooptoelect Devices, Minist Educ, Sch Phys & Elect, Changsha, Hunan, Peoples R China;[2]Chinese Acad Sci, State Key Lab Appl Opt, Changchun Inst Opt Fine Mech & Phys, Changchun, Jilin, Peoples R China;[3]East China Univ Sci & Technol, Phys Dept, Shanghai, Peoples R China;[4]Hong Kong Univ Sci & Technol, Partner State Key Lab Adv Displays & Optoelect Te, Dept Elect & Comp Engn, Hong Kong, Peoples R China

年份：2019

卷号：46

期号：7

起止页码：995

外文期刊名：LIQUID CRYSTALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000474601300002)】；

语种：英文

外文关键词：Liquid crystal; Pancharatnam-Berry phase; lens

摘要：In this paper, we proposed and fabricated a liquid crystal (LC) lens with spatially separated focuses via liquid crystal photoalignment technology. The novel lens is an integration of the polarisation grating and conventional LC lens. The two focuses of that new lens, one of which is real while the other is virtual, can be spatially separated. When combined with normal convex lens and illuminated by a linearly polarised beam, the two emergent light beams become all convergent and the two focuses are separated in three-dimension space. Moreover, the focal lengths of the lens system can be artificially controlled by adjusting the distance between our new lens and the conventional lens. Our results achieve the potential of LC lens' application in imaging devices such as multifocal cameras, bifocal eyeglasses and so on.