PLASTIC OPTICAL PRODUCT AND PLASTIC LENS FOR SPECTACLES

PROBLEM To provide a plastic optical product and a plastic lens for spectacles that have an optical multilayer film but are excellent in heat resistance. SOLUTION In a plastic optical product, an optical multilayer film 3 having seven layers is formed on a surface of a plastic substrate 1 directly or with an interlayer 2 interposed therebetween. In the layers of the optical multilayer film 3, a layer on the plastic substrate 1 side is a low refractive index layer, low refractive index layers and high refractive index layers are alternately disposed. At least the high refractive index layer at the center contains substoichiometric titanium oxide. In a plastic lens for spectacles belonging to such a plastic optical product, the plastic substrate 1 is a plastic lens substrate for spectacles, the interlayer 2 is a hard coat film, and the optical multilayer film 3 is an anti-reflective film.