| 摘要 |
PURPOSE:To provide a reflecting film which hardly requires precise controlling for use or production, and thereby, which can be used as a low-cost light transfer means with high efficiency, and to provide a light guide duct using this reflecting film. CONSTITUTION:This reflecting film 3 is produced by coating at least one surface of a resin film 3a as the base material with metal having high reflectance characteristics to form a reflecting film 3b. In this method, it is preferable to further coat the surface of the reflecting film 3b of the reflecting film 3 with a protective film having high transmittance characteristics to obtain an improved reflecting film. The light guide duct 1 is produced by lining the inner surface of a duct with the reflecting film having the structure above described. |
