| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a diffusion plate capable of emitting light brightly, uniformly and evenly over the whole surface independent of arrangement and shape of a light source, and capable of removing lamp irregularity. <P>SOLUTION: A plurality of prism lenses of the same shape are arranged side by side on one side surface, wherein the cross-section of each prism lens takes the form of a shape formed by connecting at least four oblique lines each of which is a straight line having an angle θ formed with the bottom side of 0° <θ<90° and an apex formed of a curve, symmetrically and combinatorially to the center line. <P>COPYRIGHT: (C)2009,JPO&INPIT |
