US 2002/0176169 A1 · Film for optical applications

Abstract

A film for optical applications comprising (A) a hard coat layer which comprises a resin cured by an ionizing radiation, (B) a high refractivity layer I which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.70 to 1.95, (C) a high refractivity layer II which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.60 to 1.70 and (D) a low refractivity layer which comprises a siloxane-based polymer and has a refractive index in a range of 1.37 to 1.47, layers (A) to (D) having specific thicknesses and being successively laminated at least on one face of a substrate film. The film exhibits an excellent property for preventing reflection of light and excellent scratch resistance and can be produced at a low cost.

Claims6

Dependent claims

A film for optical applications comprising (A) a hard coat layer which comprises a resin cured by an ionizing radiation and has a thickness in a range of 2 to 20 μm, (B) high refractivity layer I which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.70 to 1.95 and a thickness in a range of 30 to 120 nm, (C) high refractivity layer II which comprises a resin cured by an ionizing radiation and a metal oxide and has a refractive index in a range of 1.60 to 1.70 and a thickness in a range of 5 to 70 nm and (D) a low refractivity layer which comprises a siloxane-based polymer and has a refractive index in a range of 1.37 to 1.47 and a thickness in a range of 60 to 180 nm, layers (A) to (D) being successively laminated at least on one face of a substrate film.

Dependencies are inferred from the claim text.

Film for optical applications

Life of this patent

Film for optical applications

Life of this patent

Abstract

Claims6