| 摘要 |
PURPOSE:To provide an optical element having an excellent adhesion property between a substrate and a reflection preventive layer, and the reflection preventive layer having an excellent abrasion resistance moisture resistance, durability against cleaning by volatile solvent such as ether. CONSTITUTION:An optical element 1 of resin comprises a resin substrate (a), a foundation layer (b) formed thereon, and a reflection protective layer (h) further formed thereon. The foundation layer (b) is formed of a layer of at least one selected sort among a group of a Mn layer, a Ni layer, and a CoO layer. The reflection protective layer (h) is formed of an Al2O3 layer, a TiO2 layer, and a SiO2 layer. |
