| 摘要 |
The present invention relates to a method for making an optical article with anti-reflection properties, comprising the steps of: a) forming on at least one main surface of a support, by applying a sol comprising at least one colloidal mineral oxide with a refractive index higher than or equal to 1.80 having an initial porosity; b) optionally, forming on the first lower layer by applying a sol comprising at least one colloidal mineral oxide with a refractive index lower than 1.65 a second lower layer having an initial porosity at least equal to the initial porosity of said first layer; c) applying onto the one or more lower layer(s) an upper layer composition of an optically transparent polymer material with a refractive index lower than or equal to 1.50; d) filling the porosity of the one or more lower layer(s) through penetration into the one or more lower layer(s) of at least part of the material of the upper layer composition formed in step (c) and forming a cured upper layer which thickness is determined so that the upper layer and the one or more lower layer(s), once the initial porosity thereof has been filled, form a bilayered anti-reflection coating, within the range of from 400 to 700 nm, preferably of from 450 to 650 nm.
|
