Water dispersed adhesive composition for optical film, adhesive layer, adhesive optical film, and image display device

A water dispersed adhesive composition for an optical film which comprises emulsion particles having a core shell structure in which a (meth)acrylic copolymer (A) that includes a (meth)acrylic acid alkyl ester as a monomer unit is present as a core layer and a (meth)acrylic copolymer (B) that includes an aromatic ring-containing (meth)acrylic monomer and a (meth)acrylic acid alkyl ester as monomer units is present as a shell layer in the same emulsion particle, wherein the amount of the aromatic ring-containing (meth)acrylic monomer in the (meth)acrylic copolymer (B) is 1-28 weight% relative to the total monomer that constitutes the (meth)acrylic copolymer (A) and (meth)acrylic copolymer (B).