Patent ID: 6995739

Claim:
A display means or arrangement including a first polarizing means, a second polarizing means, a display means, rotation means for causing relative rotation between said first and said second polarizing means, said second polarizing means being disposed intermediate of said first polarizing means and said display means, at least one of said polarizing means being a colour polarizer, said colour polarizer being characterised with a colour filtering orientation wherein light of a polarization orientation parallel to said colour filtering orientation will be substantially colour filtered when passing through said colour polarizer and light of a polarization orientation orthogonal to said colour filtering orientation will pass through said colour polarizer generally unaffected by the colour filtering characteristic of said colour polarizer along said colour filtering orientation, and said display means being generally reflective towards said first and second polarizing means, further including a transflective medium disposed between said colour polarizing means and said display means, said transflective medium being characterised with a reflective orientation and a transmissive orientation which are substantially orthogonal to each other, said transflective medium generally reflects light of one polarization orientation which is parallel to its characteristic reflective orientation, and transmits light of another polarization orientation which is parallel to said transmissive orientation.