TEMPERATURE INVARIANT DUAL FREQUENCY CHOLESTERIC LIQUID CRYSTAL COMPOSITION

The invention relates to a liquid crystal composition, comprising: a dual frequency cholesteric liquid crystal, DFCLC, mixture, and a first chiral dopant and a second chiral dopant, wherein the Bragg reflection wavelength of the composition is constant, within a tolerance range of 30 nm, within a temperature range comprised within 35 and 70°C. The invention also relates to an optical cell and an optical device comprising said liquid crystal composition.