Imaging and colour/polarisation selecting reflective optical element containing cholesteric liquid crystals, and manufacture and use of the same.

摘要

The invention relates to optical elements with imaging, colour- and polarisation-selective reflection, containing cholesteric liquid crystals, and to the manufacture and use of these elements. The optically imaging, wavelength- and polarisation-selective elements are characterised by the fact that at least one cholesteric liquid crystal is enclosed in the intermediate space of constant thickness between two light-transmitting substrates with curved surface such that the helical axis of the liquid crystal is aligned perpendicularly to the curved surface of the light-transmitting substrates. The elements are suitable for use as beam splitters or recombinators in projection displays.