OPTICAL MEMBER MADE OF SYNTHETIC RESIN

摘要

PURPOSE:To increase the adhesive strength of an antireflection film to a synthetic resin substrate layer by interposing an org. hard film contg. inorg. fine- grained silica having silanol groups between the antireflection film and the substrate layer. CONSTITUTION:An org. hard film contg. inorg. fine-grained silica or a deriv. thereof having silanol groups and 20-500Angstrom average grain size such as inorg. fine-grained silica grafted on the bonding component of the hard film is interposed between an antireflection film and a synthetic resin substrate layer. The condensation product of polyol with alkyl-etherified methylolmelamine is used as the bonding component of the hard film. The preferred silica has about 3-8 silanol groups per 100Angstrom <2> on the average.