| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-performance optical article which is not degraded in performance, such as antireflection property, weatherability, wear resistance and impact resistance, in spite of a change in various conditions, such as use purposes, use environment and kinds of base materials. SOLUTION: This optical article has the base material consisting of a synthetic resin, a hard coating layer consisting of an org. silicon compd. formed on the base material and many layers of antireflection films formed thereon. The first layer of these antireflection films comprises a layer consisting essentially of titanium oxide or zirconium oxide, the second layer comprises a layer consisting essentially of silicon oxide, the third layer comprises a layer consisting essentially of titanium oxide or zirconium oxide and the fourth layer comprises a layer consisting essentially of silicon oxide. |
