Patent ID: 8399100
Filing Date: 2013-03-19
Classification: C23C,F21S,F21V,G02B,H01L,H05B,Y10T

Abstract:
1. A reflection film formed on a substrate, said reflection film being formed of an Ag alloy film comprising Ag as a main component, Bi in an amount of 0.02 atomic percent or more, and one or more of V, Ge, and Zn in a total content of 0.08 atomic percent or more, and further satisfying the following expression (1): where [A] (atomic percent) denotes the content of one or more of the V, Ge, and Zn, and [Bi] (atomic percent) denotes the content of Bi and wherein the reflection film has a visible light reflectivity of 93% or more as measured with a light within a wavelength range of 380 to 780 nm from a D65 light source according to JIS R3106.