Bulk complex polymer lens light diffuser

A back lighted imaging media comprising a light source and a diffusion film comprising a base bearing a plurality of contiguous layers having a pattern of convex or concave complex lenses on a surface thereof, at least two contiguous layers differing in index of refraction by at least 0.1.

A liquid crystal device comprising a light source and a diffusion film comprising a base bearing a plurality of contiguous layers having a pattern of convex or concave complex lenses on a surface thereof, at least two contiguous layers differing in index of refraction by at least 0.1.

A liquid crystal device component comprising a light source and a diffusion film comprising a base bearing a plurality of contiguous layers having a pattern of convex or concave complex lenses on a surface thereof, at least two contiguous layers differing in index of refraction by at least 0.1.

A method for forming a plurality of polymeric complex lenses in a desired pattern on a transparent support comprising the step of coating a melted layer of the polymeric material onto the base and cooling the material while subjecting the layer to a contact with a form having a pattern corresponding to the negative of the desired pattern, and then repeating the coating steps and forming steps over the previously formed lenses.

A method for forming a plurality of polymeric complex lenses in a desired pattern on a transparent support comprising continuous casting onto a chill roll of the polymeric material onto the support and cooling the material while subjecting the layer to a contact with a form having a pattern corresponding to the negative of the desired pattern, and then repeating the casting steps and forming steps over the previously formed lenses.