Optical stack

Abstract

This invention provides an optical stack that integrates a planar lens and a polarizing element, suppressing the reduction in polarization of the polarizing element, thereby achieving excellent display characteristics when applied to a specific image display device. The optical stack of this invention includes a substrate, a polarizing element disposed on one side of the substrate, and a planar lens disposed on the other side of the substrate. The planar lens is a nanoimprinted material or a photoform, and the total thickness of the optical stack is 200 μm or less. In one embodiment, the planar lens is a Fresnel lens or a superlens. In another embodiment, the thickness of the planar lens is 20 μm or less.

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