Patent ID: 8057907

Claim:
An optical film, which comprises: a support; and a layer containing an electrically-conductive particulate material, in which an interior of the electrically-conductive particulate material is porous or hollow, wherein the optical film comprises a fluorine-containing silane compound represented by formula [5], wherein the layer containing the electrically-conductive particulate material is a low refractive index layer, and comprises at least one cured material of a hydrolyzate of an organosilane and a condensate of the organosilane, wherein the volume fraction of the electrically-conductive particulate material is from not smaller than 30% to not greater than 80%, and wherein the layer containing the electrically-conductive particulate material comprises the fluorine-containing silane compound and is an outermost surface: Rf 5 [-(L 5 ) n -Xâ€”R 51 â€”Si(OR 52 ) 3 ] m Formula [5] wherein Rf 5 represents a perfluoropolyether group; R 51 represents an alkylene group; R 52 represents an alkyl group; L 5 represents â€”COâ€”; X represents a group selected from the group consisting of â€”Oâ€”, â€”NR 53 â€”, â€”Sâ€”, â€”SO 2 â€”, â€”SO 2 NR 53 â€” and â€”NR 53 COâ€”; R 53 represents a hydrogen atom or an alkyl group having 3 or less carbon atoms; n represents a natural number of 0 or 1; and m represents a natural number of 2 or less.