| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reflective screen where the allowable range of the variance of the layer thickness of an optical multilayer film is made wide. <P>SOLUTION: The reflective screen 10 reflecting light from a light source and displaying a picture is equipped with the optical multilayer film 12 constituted by alternately laminating a 1st optical film 12H having a high refractive index and a 2nd optical film 12L having a lower refractive index than the 1st one on a base plate 11, having high reflection characteristics that reflectance peaks are provided to light beams in a plurality of specific wavelength regions, respectively, and having high transmission characteristics to at least a light beam in a visible wavelength region other than the specific wavelength regions, and the target film thickness of each of the optical films is set so that the wavelength of any one peak out of the reflectance peaks may nearly conform with the wavelength of the strongest luminance peak of the light source. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
