Open AccessElimination of light leakage over the entire viewing cone in a homogeneously-aligned liquid crystal cell
Author(s) -
SeungWon Oh,
TaeHoon Yoon
Publication year - 2014
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.22.005808
Subject(s) - optics , azimuth , materials science , leakage (economics) , achromatic lens , polarization (electrochemistry) , viewing angle , polarizer , liquid crystal , ligand cone angle , liquid crystal display , polar , optical path , white light , physics , birefringence , chemistry , conical surface , astronomy , economics , composite material , macroeconomics
We propose an optical compensation scheme that uses uniaxial films for perfect elimination of light leakage over the entire viewing cone in a homogeneously-aligned liquid crystal cell. Uniaxial films with different dispersion characteristics are used so that they can compensate one another to achieve achromatic optical compensation. Owing to the rotational symmetry of the polarization change on the S(2)-S(3) plane of the Poincaré sphere, we can eliminate the light leakage at all azimuth angles. The contrast ratio of the proposed configuration for white light is higher than 3000:1 at a polar angle of ± 85°, irrespective of the azimuth angle.