| 摘要 |
An antireflection coating has at least a first layer constituted by a coating with refractivity of n1 and optical thickness of d1 which is provided on a substantially transparent substrate with refractivity of n0, and a second layer constituted by a SiO2 coating with optical thickness of d2 which is provided on the first layer, wherein the n0, n1, d1 and d2 satisfy the following conditions: 1.42<=n0<=1.53, 1.95<=n1<=2.35, 0.40lambd<=d1<=0.44lambd, and 0.40lambd<=d2<=0.44lambd, wherein the central wavelength of light to be prevented from being reflected is lambd.
|
