| abstract |
[Task] An optical film having excellent visibility in a wide-angle direction is provided. [Solutions] An optical film comprising at least one resin selected from the group consisting of polyimide-based resins and polyamide-based resins, having a total light transmittance of 85% or more and a haze of 0.5% or less, When the direction parallel to the machine flow direction at the time of manufacture in the optical film plane is the MD direction, and the direction perpendicular to the machine flow direction is the TD direction, The first transmittance mapping value C 60 (MD) in a direction inclined 60 ° from the vertical direction to the MD direction with respect to the plane of the optical film obtained when the width of the optical comb is 0.125 mm according to JIS K-7374 , The second transmittability mapper value C 60 (TD) in the direction inclined 60 ° from the vertical direction to the TD direction, and the third transmittance mapper value C 0 in the vertical direction, Equation (1): 87% ≤C 60 (MD) ≤100% ... (1), Equation (2): 87% ≤C 60 (TD) ≤100% ... (2), and Equation (3): 0.8≤C 60 (MD) / C 0 ≤1.0 ... (3) To meet, optical film. |