Title :
Optical characteristics of twisted nematic liquid-crystal films
Author :
Gooch, C.H. ; Tarry, H.A.
Author_Institution :
Services Electronics Research Laboratory, Baldock, UK
Abstract :
A twisted nematic liquid crystal is shown by theory and experiment to rotate incident plane-polarised light by ¿/2 only at specified wavelengths. At other wavelengths, elliptically polarised light is produced. This action determines the contrast ratio of some twisted nematic devices.
Keywords :
light polarisation; liquid crystal devices; liquid crystals; optical rotation; light polarisation; liquid crystal devices; molecular orientation; optical characteristics;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19740002
