Patent ID: 8970949
Filing Date: 2015-03-03
Classification: G02B

Abstract:
1. An optical body comprising: a first optical layer having a concave-convex surface; a wavelength-selective reflecting layer formed on the concave-convex surface; and a second optical layer formed on the wavelength-selective reflecting layer to embed the concave-convex surface, the wavelength-selective reflecting layer having a multilayer structure formed by successively stacking a first high refractive index layer, a metal layer, and a second high refractive index layer, wherein, given that optical film thicknesses of the first high refractive index layer and the second high refractive index layer are x (nm) and y (nm), respectively, and a geometrical film thickness of the metal layer is z, x, y and z satisfy formula (1) when the refractive indices of the first high refractive index layer and of the second high refractive index layer are measured at a wavelength of 550 nm: where x and y are each 10 nm or more and 120 nm or less.