| 摘要 |
An optical component which includes: a plastic substrate; and an antireflection film disposed on the substrate, wherein the antireflection film is a multilayer film having alternately-laminated six or more layers including high refractive index layers and low refractive index layers; a first layer of the antireflection film deposited closest to the substrate is a high refractive index layer; » satisfies 480 nm‰¤»‰¤530 nm where » is the wavelength of light incident into the antireflection film; an optical thickness D 1 of the first layer satisfies 0.02»‰¤D1‰¤0.04»; an optical thickness Dm of a layer of the antireflection film that is located fifth from an outermost layer deposited furthest from the substrate satisfies 0.19»‰¤Dm‰¤0.75»; a total physical thickness dt of the entire antireflection film satisfies 350 nm‰¤dt‰¤480nm; and a total physical thickness da of the low refractive index layers satisfies 0.65 dt‰¤da‰¤0.80dt. |
