Coatings of cholesteric liquid crystals (CLCs) have properties of narrowband optical filters. It has been proposed and tested experimentally that superimposed coatings of left- and right-handed CLCs double the peak reflectance from 0.5 to 1.0. In an alternate method a halfwave plate inserted between two coatings of left-or right-handed CLCs accomplishes the same result. As the spectra of such superimposed coatings resemble those of optimum colors, the color gamut obtained with such liquid crystal coatings approaches that of optimum colors.
© 1980 Optical Society of America
Original Manuscript: October 17, 1979
Published: April 15, 1980
David M. Makow, "Peak reflectance and color gamut of superimposed left- and right-handed cholesteric liquid crystals," Appl. Opt. 19, 1274-1277 (1980)