Patent ID: 7318959

Claim:
Optical member comprising a plastic substrate and a multilayered antireflection film formed by vapor deposition, wherein at least one layer in the antireflection film is a hybrid layer formed of the following materials as vapor deposition raw materials: (i) at least one inorganic substance selected from silicon dioxide, aluminum oxide, titanium oxide, zirconium oxide, tantalum oxide, yttrium oxide, and niobium oxide, and (ii) at least one organic compound not containing silicon which is a liquid at normal temperature and at atmospheric pressure, selected from any of the general formulae (e)-(g): wherein R 9 is a C 1-10 -hydrocarbon group or trimethylolpropane wherein the compound of general formula (f) is selected from the group consisting of neopentyl glycol diglycidyl ether, glycerol diglycidyl ether, propylene glycol diglycidyl ether, tripropylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether; and wherein the compound of general formula (g) is selected from the group consisting of vinylpyrrolidone, vinylcarbazole, methyl methacrylate, ethyl methacrylate, benzyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, dimethylaminoethyl methacrylate, methacrylic acid, glycidyl methacrylate, vinyl acetate, and styrene.