Title: A liquid crystal and polymer composite film for liquid crystal lenses
Authors: Lin, Yi-Hsin
Chen, Hung-Shan
Wang, Yu-Jen
Chang, Chia-Ming
光電工程學系
Department of Photonics
Keywords: Liquid Crystal Lens;Ophthalmic;Polarizer-free;Polymeric film
Issue Date: 1-Jan-2015
Abstract: Liquid crystal (LC) lenses offer novel opportunities for applications of ophthalmic lenses, camera modules, pico projectors, endoscopes, and optical zoom systems owing to electrically tunable lens power. Nevertheless, the tunable lens power and the aperture size of LC lenses are limited by the optical phase resulting from limit birefringence of LC materials. Recently, we developed a liquid crystal and polymer composite film (LCPCF) as a separation layer and an alignment layer for a multi-layered structure of LC lenses in order to enlarge the polarization-independent optical phase modulation. However, the physical properties and mechanical properties of the LCPCF are not clearly investigated. In this paper, we show the mechanical and physical properties of the LCPCF. The anchoring energy of the LCPCF is comparable with the standard rubbing-induced alignment layer. The transmission efficiency is around 97% neglecting the Fresnel reflection. The surface roughness is under 2 nm by using AFM scanning. The bending strength test indicates that the LCPCF can hold the LC material with reasonable deformation. We believe this study provides a deeper insight to the LC lens structure embedded with LCPCF.
URI: http://dx.doi.org/10.1117/12.2081823
http://hdl.handle.net/11536/125089
ISBN: 978-1-62841-474-5
ISSN: 0277-786X
DOI: 10.1117/12.2081823
Journal: EMERGING LIQUID CRYSTAL TECHNOLOGIES X
Volume: 9384
Appears in Collections:Conferences Paper