| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical element having a laser damage suppression film resistant to high power blue laser and formed on a plastic substrate. <P>SOLUTION: The optical element has at least one layer made of low refractive index material 105 and a layer made of high refractive index material 107 formed alternately as a damage suppression film, on a substrate 101 made of a thermoplastic transparent resin cycloolefin polymer having oxidation preventive function, wherein at least the layers made of high refractive index material are formed on the condition that the plasma is generated. <P>COPYRIGHT: (C)2008,JPO&INPIT |
