Surface formed complex polymer lenses for visible light diffusion

A back lighted device comprising a light source and a transparent polymeric film comprising a plurality of complex lenses on a surface thereof and having a diffuse light transmission of at least 65%.

A liquid crystal device comprising alight source and a transparent polymeric film comprising a plurality of complex lenses on a surface thereof and having a diffuse light transmission of at least 65% wherein the transparent polymeric film is located between the light source and a polarizing film.

A component for a liquid crystal display device comprising a light source and a light diffuser comprising a transparent polymeric film containing a plurality of complex lenses on a surface thereof 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 transparent support comprising the step of coating a melted layer of a polymeric material onto the support and cooling the material while subjecting the layer to contact with a form having a pattern corresponding to the negative of the desired lens pattern.

A method for forming a plurality of polymeric complex lenses in a desired pattern on a transparent support comprising continuously casting the polymeric material onto the support on a chill roll 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.