| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical sheet including an optical function layer having a hardly-scratchable, high-restorability, fine-rugged structure. <P>SOLUTION: The optical sheet includes the optical function layer disposed on at least one side thereof, constituted by two-dimensionally arraying units having the fine-rugged structure so as to converge or direct the transmitted light incident from the surface side opposite to the surface side having the fine-rugged structure. The optical function layer is constituted of a cured substance of an active energy curable resin composition, and the dynamic viscoelasticity tanδof the optical function layer at 25°C is 0.4 to 0.8, and the dynamic friction coefficient of the layer is≤0.3, the fracture point elongation of the layer is 20% to 70%. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
