Optisches Element mit Antireflexfilm mit feinen Oberflächen-Unebenheiten, dessen Herstellungsverfahren

摘要

A transparent antireflection film includes fine irregularities (a) mainly composed of alumina, and a transparent thin film layer (b) supporting the fine irregularities, in which the transparent thin film layer contains at least one selected from the group consisting of zirconia, silica, titania, and zinc oxide. A production method for the aforementioned transparent antireflection film includes: forming a multicomponent film using an application liquid containing at least one compound selected from the group consisting of a zirconium compound, a silicon compound, a titanium compound, and a zinc compound, and at least an aluminum compound; and subjecting the multicomponent film to warm water treatment.