| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical element capable of obtaining the efficient and quick restoration or the like. <P>SOLUTION: In the case of restoring the optical element 10, the optical element 10 is immersed in hot water whose temperature is a melting point of a background layer 16 or over to melt the background layer 16. Thus, only a multilayer film 14 can simply be exfoliated from a substrate 12. The substrate 12 after the exfoliation processing is recycled via washing, and the upper face 12a is restored to a non-eroded state just after polishing by the exfoliation. The optical element 10 is restored to the original state by forming the background layer 16 and the multilayer film 14 onto the substrate 12 by the method. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
