Hard coating layered optical film, polarizer comprising the same, and image display comprising the hard coating layered optical film and/or the polarizer comprising the same

A hard coating film comprising a polymethyl methacrylate (PMMA) base film and an antiglare hard coating layer formed thereon, wherein the antiglare hard coating layer is formed by coating a curable mixture including a (meth)acrylate composition, an initiator, silica nanoparticles, organic microparticles and a leveling agent on the PMMA base film and curing thereafter, and the (meth)acrylate composition comprises:

• a urethane (meth)acrylate oligomer with a functionality of 6 to 15 and a molecular weight ranging between 1,000 and 4,500;
• at least one (meth)acrylate monomer with a functionality of 3 to 6;
• and at least one (meth)acrylate monomer with functionality of less than 3;
• wherein the antiglare hard coating layer is a single layer;
• and
• wherein the antiglare hard coating layer has a mean spacing between peaks (Sm) of between 20 μm and 50 μm, an arithmetic mean deviation of surface (Ra) of between 0.03 μm to 0.09 μm, a largest peak to valley height (Ry) of between 0.25 μm and 0.60 μm, a ten-point mean roughness (Rz) of between 0.15 μm and 0.50 μm and a root mean square slope (PΔq) of between 0.50° and 1.60°.