The present invention provides a high brightness color selective light modulator (CSLM) formed by a polarization modulator positioned between two retarder stacks. The modulator changes the apparent orientation of one retarder stack relative to the other so that, in a first switching state of the modulator...http://www.google.ca/patents/US6417892?utm_source=gb-gplus-sharePatent US6417892 - Color filters, sequencers and displays using color selective light modulators
