Optical elements having image-forming, color- and...

Details Optical elements having image-forming, color- and... Optical elements having image-forming, color- and...

G - Physics

02

B

G02B 5/26 (2006.01) G02B 5/30 (2006.01) G02B 27/10 (2006.01) G02B 27/14 (2006.01) G02B 27/28 (2006.01) G02F 1/00 (2006.01) G02F 1/1335 (2006.01) G02F 1/1337 (2006.01) H04N 9/31 (2006.01)

Patent

CA 2130759

The invention relates to optical elements having image-forming, color- and polarization-selective reflection and containing cholesteric liquid crystals, and to the preparation and use of these elements. In the wavelength- and polarization-selective elements which form an optical image, at least one cholesteric liquid crystal is enclosed in the cavity of constant thickness between two light-transmitting substrates having curved surfaces in such a way that the helix axis of the liquid crystal is aligned perpendicular to the curved surface of the light-transmitting substrates. The elements are suitable for use as beam splitters or recombiners in projection displays.

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