| 摘要 |
An optical multilayer film comprising a hard coat layer and a low refractive index layer comprising aerogel, which layers are laminated, in this order, directly or with another intervening layer on one surface of a base film comprising a transparent resin, wherein the refractive index n<SUB>H </SUB>of the hard coat layer and the refractive index n<SUB>L </SUB>of the low refractive index layer satisfy the following three formulae [1], [2] and [3], <?in-line-formulae description="In-line Formulae" end="lead"?>1.25<=N<SUB>L</SUB><=1.37 Formula [1]<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>n<SUB>H</SUB>>=1.53 Formula [2]<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>(n<SUB>H</SUB>)<SUP>1/2</SUP>-0.2<n<SUB>L</SUB><(n<SUB>H</SUB>)<SUP>1/2</SUP>+0.2. Formula [3.]<?in-line-formulae description="In-line Formulae" end="tail"?>
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