Patent ID: 8692959
Filing Date: 2014-04-08
Classification: G02B,G02F,G06F

Abstract:
1. An optical layered body comprising: a polyester base, a primer layer formed on the polyester base, and a hard coat layer formed on the primer layer, wherein the polyester base has a retardation of not less than 8000 nm, and a difference (nx−ny) of 0.07 to 0.20 between a refractive index (nx) in a slow axis direction that is a high refractive index direction and a refractive index (ny) of a fast axis direction that is orthogonal to the slow axis direction, a refractive index (np) of the primer layer, the refractive index (nx) in the slow axis direction of the polyester base, and the refractive index (ny) in the fast axis direction of the polyester base satisfy ny<np<nx, and a refractive index (nh) of the hard coat layer, the refractive index (nx) in the slow axis direction of the polyester base, and the refractive index (ny) in the fast axis direction of the polyester base satisfy ny<nh<nx.