| 摘要 |
<p>The strip (1) has a solid core (2) covered on portions of an anterior face (23) and a posterior face (24) by two sheathings formed by opaque pieces (3, 4), where the core is made of polycarbonate. The opaque pieces are made of opaque material, and the core is constituted of a transparent or translucent material. The two sheathings are placed on the posterior face and the anterior face of the core so that an incident light ray does not pass through the strip without being stopped by one of the two sheathings that are made of aluminum. The core includes photochromic pigments.</p> |
