| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical plate capable of improving the usage rate of light beam. <P>SOLUTION: In the optical plate formed by integrally molding a first transparent layer, a second transparent layer, and a scattering layer, the scattering layer includes a transparent resin arranged between the first transparent layer and the second transparent layer, and scattering particles distributed in the transparent resin; and a plurality of spherical recesses are formed on the outer surface of the first transparent layer, a plurality of truncated conical recesses are formed on the outer surface of the second transparent layer, and the thicknesses of the scattering layer, the first transparent layer and the second transparent layer are each 0.35 mm, or larger than 0.35 mm. <P>COPYRIGHT: (C)2008,JPO&INPIT |
