Optical component and method for manufacturing the same

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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 1 × 10-4 Pa and less than 1 × 10-2 Pa as the high refractive index layer of the optical multilayer film.