Patent ID: 8557332

Claim:
A method for producing an optical film, comprising: simultaneously coating two separate coating solutions over a transparent support, wherein the two coating solutions are a lower layer coating solution to be coated on a transparent support side and an upper layer coating solution to be coated on an outermost surface side, and the two coating solutions each contains a solvent and a solute; and drying the solvent in each of the two coating solutions to provide two optical layers, wherein the main component of the solute in the lower layer coating solution is insoluble or sparingly soluble in the main component of the solvent in the upper layer coating solution, the main component of the solute in the upper layer coating solution is easily soluble in the main component of the solvent in the lower layer coating solution, the main component of the solute in the lower layer coating solution is at least one of a bifunctional or greater functional polymerizable monomer and oligomer, and a ratio of a wet coated amount of the upper layer coating solution to a wet coated amount of the lower layer coating solution is from 1/1 to 1/50.