| 摘要 |
A method for manufacturing a plastic optical component having an optical multilayer film. The optical multilayer film has a low refractive index layer and a high refractive index layer, and a layer containing titanate of a rare earth element is formed in a vacuum atmosphere at pressure more than 1x10<SUP>-4 </SUP>Pa and less than 1x10<SUP>-2 </SUP>Pa as the high refractive index layer of the optical multilayer film.
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