Reflector member

特許 係属中 PROBLEM TO BE SOLVED: To provide a visible-light reflector member or a reflective film having higher reflectance than a conventional silver thin-film reflecting plate particularly in the low wavelength side of visible light and having high durability. ; SOLUTION: The reflector member includes a silver thin film formed on a substrate and a silicon nitride protection film formed on the silver thin film. The silver thin film has the (111) orientation as the principal plane orientation.