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; a plurality of spherical recesses are formed on the outer surfaces of the first transparent layer; and on the second transparent layer, at least three mutually adjacent outside faces are provided, and a plurality of microprojections are reduced gradually, as the horizontal width of each outside face is located farther from the scattering layer are formed. <P>COPYRIGHT: (C)2008,JPO&INPIT |