| 摘要 |
The present invention provides polarizing devices and illumination devices that include the polarizing devices. The polarizing devices and illumination devices can be advantageously used in a wide variety of applications, such as in liquid crystal displays. Polarizing devices provided by the present invention include those having an isotropic waveguiding layer with a refractive index n<SUB>i </SUB>and an anisotropic separating layer having an anisotropic region with principal refractive indices n<SUB>x </SUB>and n<SUB>y</SUB>, wherein n<SUB>x</SUB>>n<SUB>y </SUB>and wherein n<SUB>i </SUB>is substantially smaller than n<SUB>x </SUB>and substantially larger than n<SUB>y</SUB>. An example of a further polarizing device provided by the present invention is one having a waveguiding layer and a separating layer, wherein the separating layer includes a form birefringent region.
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