| 摘要 |
PURPOSE:To maintain the relatively high reflectivity of a bronze-colored mirror and to color said mirror to the uniform bronze color at an adequate density by forming a thin reflective copper alloy film having a prescribed film thickness to one face of a transparent substrate and mounting means for electrical heating of said thin film thereto. CONSTITUTION:The thin reflective copper alloy film 13 essentially consisting of copper such as Cu-Ni alloy is formed to one face of the transparent substrate 12 consisting of glass, plastic, etc. and the film thickness thereof is specified to >=200Angstrom . A pair of electrodes 16 and lead wires 17 connected thereto are provided to both sides on the surface of the thin film 14 as the electrical heating means. The mirror surface 16 is heated to >=60 deg.C so that the fogging thereof is prevented. |
