摘要 |
An optical substrate includes a transparent substrate; an interference spot-preventing layer composed of at least one sublayer, the interference spot-preventing layer being coated on the transparent substrate; and a hard coat layer disposed on the interference spot-preventing layer. In the optical substrate, when the complex refractive index of the hard coat layer at light of 550 nm is represented as n<SUB>H</SUB>-ik, n<SUB>H </SUB>is 1.45 to 1.59 and k is substantially zero. When the optical admittance of the interface between the interference spot-preventing layer and the hard coat layer is represented as (x+iy), x and y satisfy the formula of (x-n<SUB>H</SUB>)<SUP>2</SUP>+y<SUP>2</SUP><=0.08.
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