| 摘要 |
<p>Provided is an optical film which has a relatively low haze value and is prevented from the occurrence of blocking satisfactorily. The optical film is characterized in that the center line average roughness (Ra) (mm) and the concave-convex average distance (Sm) (mm) of one surface of the optical film fulfill the following formula: Ra = 3.125×P×Sm3/(E×I) [wherein P represents a load (N) which is generated by a tensile force generated during the winding of the film, is applied to a space between adjacent convex parts present on the surface of the film, and is a value expressed by the formula: P = (F/x)×Sm; x represents the width (mm) of the film during the winding of the film; F represents a tensile force (N) of the film generated during the winding of the film; E represents the elastic modulus (MPa) of the film; I represents the second moment of area (mm4) of the film which is represented by formula (3) and is a value expressed by the formula: I = (Sm×t3)/12; and t represents the thickness (mm) of the film], and is also characterized in that the optical film contains a resin and additionally contains microparticles in an amount of 0.2 wt% or less relative to the amount of the resin component.</p> |
