Patent ID: 7744263
Filing Date: 2010-06-29
Classification: G02B

Abstract:
1. A structured optical film having a structured surface extending longitudinally between a first end and a second end and laterally between a first side face and a second side face, the structured surface comprising a plurality of substantially parallel and elongate light-directing elements, each element having a respective peak and defining at a junction with an adjacent element a respective valley, each of the peaks and valleys defining substantially the same dihedral angle and extending substantially uninterrupted across the structured surface between the first and second ends, wherein a first sequence defined by successive lateral distances between adjacent peaks from the first side face to the second side face is a first non-periodic sequence and a second sequence defined by successive lateral distances between adjacent valleys from the first side face to the second side face is a second non-periodic sequence, the second sequence being configured based on the first sequence, such that the peaks are arranged in a substantially coplanar formation and the valleys are arranged in a substantially non-coplanar formation.