| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an anti-reflection coating having superior anti-reflection performance with respect to a glass substrate with a low to intermediate refractive index, and a superior burn preventing effect. <P>SOLUTION: The anti-reflection coating comprising first to seventh layers formed on a substrate in this order, the first layer being an alumina-based layer, the seventh layer being a porous, silica-based layer, and a refractive index of the substrate is 1.45-1.72 and each of the first to seventh layers having predetermined refractive index and optical thickness in a wavelength range of 400-700 nm. <P>COPYRIGHT: (C)2010,JPO&INPIT |
