Surface formed complex multi-layered polymer lenses for light diffusion

A transparent film having a polymeric base, the film comprising a top and bottom surface, at least one of the surfaces comprising a plurality of convex or concave complex lenses.

A back lighted imaging media comprising a light source and a integral film comprising a base bearing a pattern of complex lenses on a surface thereof wherein the complex lenses comprise two or more distinct layers and having a diffuse light transmission of at least 65%.

A liquid crystal device comprising a light source and a integral film comprising a base bearing a pattern of complex lenses on a surface thereof wherein the complex lenses comprise two or more distinct layers, the film having a diffuse light transmission of at least 65%, wherein the polymeric layer is located between the light source and a polarizing film.

A liquid crystal device component comprising a light source and a integral film comprising a base bearing a pattern of complex lenses on a surface thereof wherein the complex lenses comprise two or more distinct layers and having a diffuse light transmission of at least 65%.

A method for forming a plurality of polymeric complex lenses in a desired pattern on a base 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 to form lenses and then coating and cooling a further polymeric layer on the formed lenses.

A method for forming a plurality of polymeric complex lenses in a desired pattern on a base comprising casting polymeric material onto the base in contact with a chill roll and cooling the polymeric material while subjecting the layer to a contact with a form having a pattern corresponding to the negative of the desired pattern to form lenses and then casting and cooling a further polymeric layer on the formed lenses.