| 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 truncated conical recesses are formed on the surface of the first transparent layer, a plurality of microrecesses arranged into a matrix system are formed on the surface of the second transparent layer, and the microrecesses are formed of at least three mutually connected sides, and the horizontal width of each side is made gradually larger in the direction of separating far from the scattering layer. <P>COPYRIGHT: (C)2008,JPO&INPIT |
