| 摘要 |
PURPOSE:To improve adhesive strength and durability by providing a hard coat layer having scratching resistance on a transparent plastic base material and providing specific multi-layered antireflection films on the front layer thereof. CONSTITUTION:The hard coat layer 11 having the scratching resistance is provided on the transparent plastic base material 10. A layer 1 essentially consisting of zirconium oxide, a layer 2 essentially consisting of silicon oxide, a layer 3 essentially consisting of titanium oxide and a layer 4 essentially consisting of silicon dioxide are provided successively from the surface from the base material side on the front layer thereof; at the same time, the 1st layer and the 2nd layer are made of the equiv. films. The 1st layer and 2nd layer are formed as the layer having a middle refractive index as a while and the layer essentially consisting of the titanium oxide is then provided as the 3rd layer thereon. The layer essentially consisting of the silicon dioxide is provided as the 4th layer thereon. The film having the excellent antireflective function as a whole is attained coupled by the middle refractive index layer of the 1st and 2nd layer if a high refractive index layer is provided on the 3rd layer and a low refractive index is provided on the 4th layer. |
