Microreplicated film for autostereoscopic displays

摘要

An optical light redirecting film that can be made by microreplication, and that is suitable for use in an autostereoscopic backlight or display, includes opposed first and second structured surfaces. The first structured surface includes lenticular features and the second structured surface includes prismatic features. In some cases, at least a first prismatic feature has a first prism optical axis that is tilted relative to a thickness axis of the film perpendicular to the film plane. In some cases, at least a first lenticular feature has a first lenticular optical axis that is tilted relative to the thickness axis. In some cases, the film may have a central film caliper (thickness) at a central portion of the film and an edge film caliper at a first edge portion of the film, the central film caliper being greater than the edge film caliper.

主权项

1. A light redirecting film configured to be used in an autostereoscopic backlight, the film defining a plane and having opposed first and second structured surfaces along the plane, the first structured surface comprising lenticular features and the second structured surface comprising prismatic features, wherein each of the prismatic features has a prism optical axis, and wherein the prismatic features include a first plurality of prismatic features, where a first one of the prismatic features of the first plurality has a first prism optical axis that is tilted relative to a thickness axis of the film perpendicular to the plane and a second one of the prismatic features has a second prism optical axis that is substantially parallel to the thickness axis, and wherein the first plurality of prismatic features are arranged such that they have respective amounts of tilt that change across the film from larger values at the first prismatic feature of the first plurality to smaller values at the second prismatic feature.