A low refractive index layer for anti-reflection film applications includes a fluorinated copolymer as the principal low refractive index material. The fluorinated copolymer is soluble in a non-halogenated organic solvent, enabling deposition of the low refractive index layer of uniform thickness onto conventional substrates via conventional wet coating processes, but without the need for or use of expensive and environmentally unfriendly halogenated solvents. Coating compositions for depositing such a low refractive index layer and methods of depositing them also are disclosed.
LOW-REFRACTIVE INDEX LAYER, AR COATINGS HAVING SUCH A LAYER AND METHODS FOR PRODUCING THEM