title: Preventing occurrence of disclination lines in liquid crystal lenses with a large aperture by means of polymer stabilization.
abstract: Liquid crystal (LC) lenses with a circularly hole-patterned electrode possess excellent characteristics in optical performance, especially for the capability of tunable focal lengths. But, non-uniformly symmetrical electric fields in LC lenses usually induce disclination lines when operating. In general, the occurrence of disclination lines not only degrades their optical capability such as imaging performance, but also spends more time for tuning focal lengths. In this paper, we use a way of polymer stabilization to successfully prevent the disclination lines in LC lenses. Even arbitrarily adjusting the applied voltages in LC lenses, it seems no occurrence of disclination lines again. In addition, we compare the basic optical performance for LC lenses with or without polymer stabilization. From experimental results, it shows that they almost have the same optical performance.
authors.affiliation: Department of Photonics, National Cheng Kung University, No.1 University Road, Tainan 701, Taiwan.
authors.forename: Che Ju
authors.initials: CJ
authors.lastname: Hsu
authors.forename: Chia Rong
authors.initials: CR
authors.lastname: Sheu
mesh_terms: D004560:Electricity; D004566:Electrodes; D004867:Equipment Design; D007368:Interferometry / Q000379:methods; D007909:Lenses; D050866:Liquid Crystals; D055095:Optics and Photonics; D011108:Polymers / Q000737:chemistry*; D015203:Reproducibility of Results; D014466:Ultraviolet Rays
chemical_list: D011108:Polymers