| 摘要 |
A glass substrate includes a first side and a second opposite side, and provided, on its second side, with an electrode which is formed by at least one electrically conductive film, the substrate having, over all of its second side, and through a thickness e extending toward the interior of the substrate in the direction of the first side, a refractive index variation, of the glass, obtained by an ion-exchange treatment, the refractive index at the surface being greater than that of the glass located beyond the thickness e. |
