| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical sheet not only easy in handling and hardly causing the deterioration of optical characteristics when used with a reflection polarizer in combination. <P>SOLUTION: The optical sheet 17 is laminated and integrated at least on one surface of the reflection polarizer 16 and comprises a transparent resin sheet, wherein another surface opposite to the surface laminated on the reflection polarizer 16 has arithmetic average surface roughness Ra of ≤0.5 μm as 0.08 mm cut-off value measured on the basis of JIS B 0601:2001, average length RSm of roughness curve element of 10-200 μm and ten point average roughness Rz<SB>JIS</SB>of 1-20 μm. <P>COPYRIGHT: (C)2008,JPO&INPIT |
