Importance

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Abstract

A light collimating film has a sheeting having a first side and a second side, wherein the first side includes a series of linear optical elements having a primary axis running the length of the optical elements, and the second side includes a plurality of subwavelength optical microstructures being oriented at about 90 degrees relative to the primary axis of the linear optical elements. Another embodiment includes a back lighting display device having a lighting device, a display panel, and a sheeting having a first side and a second side, wherein the first side includes a series of linear prisms having peaks, and the second side includes a plurality of subwavelength optical microstructures being oriented at about 90 degrees relative to the peaks of the linear prisms. Yet another embodiment includes a light collimating structure having a first collimating film having a first surface with a plurality of subwavelength optical microstructures thereon and a second surface with first linear prisms having peaks, the subwavelength optical microstructures being oriented at about 90 degrees relative to the peaks of the first linear prisms, and a second collimating film having a first surface with a plurality of subwavelength optical microstructures thereon and a second surface with second linear prisms having peaks, the subwavelength optical microstructures being oriented at about 90 degrees relative to the peaks of the second linear prisms.

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First Claim