Patent ID: 7423809

Claim:
A reflective screen that displays an image by reflecting light from a light source, the reflective screen comprising: a reflective sheet; a light-scattering sheet; and an adhesive layer bonding the reflective sheet to the light-scattering sheet, wherein at least one of the adhesive layer or the light-scattering sheet contains a coloring material that absorbs light in a particular wavelength region from the light source, wherein the reflective sheet has high reflecting properties to light in particular wavelength regions and absorbing properties to light in a visible wavelength region outside the particular wavelength regions, wherein the reflective sheet comprises an optical laminate including a dielectric layer and a light-absorbing thin film having a transmitting property; and a reflecting layer for reflecting light transmitted through the optical laminate, and wherein the thickness of each of the layers of the optical laminate is configured with respect to a reflectance of 50% or more, is exhibited with respect to red, green, and blue wavelength regions, and an absorption of 80% or more, is exhibited with respect to light outside the red, green, and blue wavelength regions, wherein the thickness of each of the layers of the optical laminate is configured to satisfy the following condition: nd =γ(α±¼) wherein d is the thickness of each layer, n is a refractive index of each layer, γ is the wavelength of light incident on the optical laminate, nd is the optical thickness of each layer, and α is a natural number.