Open AccessWide viewing angle polarization interference filter using double liquid crystal layers with opposite twisted direction
Author(s) -
Rui Niu,
Chi Zhang,
Xiaoshuai Li,
Hongmei Ma,
Yubao Sun
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.444591
Subject(s) - polarizer , optics , materials science , liquid crystal , viewing angle , polarizing filter , polarization (electrochemistry) , transmittance , liquid crystal display , optical filter , interference filter , liquid crystal on silicon , interference (communication) , color gel , filter (signal processing) , liquid crystal tunable filter , optoelectronics , birefringence , layer (electronics) , physics , wavelength , telecommunications , computer science , chemistry , channel (broadcasting) , composite material , computer vision , thin film transistor
We demonstrate a wide viewing angle polarization interference filter (PIF), which consists of two crossed polarizers and double liquid crystal layers with opposite twisted direction. The polarization interference effect of the PIF is achieved by the double liquid crystal layers, and an additional compensation layer between the double liquid crystal layers can further improve the optical performance of the PIF. By using the Jones matrix method, we derive the transmittance formula of the PIF with/without compensation layer, which can be used to design any required color filter by selecting the appropriate twist angle and thickness of the liquid crystal layer. We design blue, green and red PIFs and analyze their optical performance. The proposed PIF has a wider viewing angle (±30°), and the color saturation of the PIF is also considerably high.