A hardcoat layer is a cured layer comprising a curable resin-precursor, a thermoplastic resin, and a fine particle having an average primary particle size of 1 to 100 nm, and the hardcoat layer is formed on at least one side of a transparent film. The thermoplastic resin may be a thermoplastic resin (particularly, a cellulose derivative) nonreactive to the curable resin-precursor. The ratio of the metal oxide fine particle is about 0.5 to 4 parts by weight relative to 100 parts by weight of the curable resin-precursor. The metal oxide fine particle may comprise at least one fine particle selected from the group consisting of antimony tin oxide, tin oxide, and zinc oxide. The curable resin-precursor may comprise a tetra- or more-functional precursor. The optical film of the present invention has excellent anti-glareness or anti-Newton-ring property and also has excellent abrasion resistance and mechanical properties.