Patent ID: 6657271
Filing Date: 2003-12-02
Classification: G02B

Abstract:
A transparent substrate with a multilayer antireflection film having electrical conductivity, the film including a transparent dielectric thin-film and a transparent conductive thin-film layered on the transparent substrate,wherein the transparent dielectric thin-film consists of a first thin-film layer having a lower refractive index than a refractive index of the transparent substrate and a second thin-film layer having a higher refractive index than the refractive index of the first thin-layer, and the transparent conductive thin-film consists of a third thin-film layer, the first, second, and third thin-film layers being formed on the transparent substrate in this order from the transparent substrate side so that the third thin-film layer is an outermost layer, and an optical thickness of the third thin-film layer is determined to provide a desired surface resistance value, and optical thickness of the second thin-film layer is determined so that the sum total of the optical thickness of the second thin-film layer and the optical thickness of the third thin-film layer is approximate &lgr;/2.