| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical sheet (display) capable of uniformizing light from a light source without increasing a portion of the light to be emitted wastefully, and capable of emitting the light while controlling a diffusion range. <P>SOLUTION: The optical sheet is constituted by integrating at least a light scattering layer (a), an adhesive layer or an adhesive layer (b), a light reflective layer (c) which has a surface of high light reflection facing the emission surface side of the light scattering layer (a) and reflects light scattered by the light scattering layer to the light scattering layer side, and a lens sheet (d) of which the back surface (flat surface) is fixed to the other surface of the light reflective layer (c) and the surface has a plurality of unit lenses arranged thereon, in the order from the incident side of illumination light. The optical sheet has an aperture part on the light reflective layer (c) so that a perpendicular drawn from the apex of a protrusion part of each unit lens to the flat surface of the rear surface of the lens sheet passes through the aperture part while being made to correspond to each of the unit lenses of the lens sheet (d) one to one. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
