| 摘要 |
<p>Curved polarization filters and methods of manufacturing such filters are described in the present disclosure. An exemplary method includes laminating a planar polarization layer to a planar retarder layer at a predetermined orientation and bending the laminate to create a curved filter. The strain on the retarder layer results in stress- induced birefringence, and the predetermined orientation of the retarder substantially compensates for the stress-induced birefringence. In some embodiments, the predetermination is based on mathematical models. In some other embodiment, the predetermination is based on experimental data. Fig 1C WO 2009/049265 PCT/US2008/079655 101 108 128 120 (124 - 104 FIG. JC 106 c3.5 -+ u3.0 ±2.5 z2.0 LENS CURVATURE RADIUS (cm)</p> |
