Patent ID: 6838197

Claim:
An antireflection film comprising a substrate film and an antireflection multiple layer provided on the substrate film, wherein the antireflection multiple layer comprises an organic silicon layer (A) having a composition represented by SiOxCy:H (x=1.6 to 1.9 and y=0.2 to 1.0) and a refractive index of not less than 1.40 and not more than 1.46 (λ=550 nm) as an outer layer and at least one layer selected from a silicon oxycarbide layer (B) having a composition represented by SlOaCb (a=0.7 to 1.7 and b=0.2 to 1.4) and a refractive index of not less than 1.55 and less than 1.80 (λ=550 nm) and a silicon oxycarbide layer (C) having a composition represented by SiOdCe (d=0.5 to 0.9 and e=1.0 to 2.0) and a refractive index of not less than 1.80 and not more than 2.50 (λ=550 nm) provided between the substrate and the outer layer.