Light-screening film paint for lamps, and light-screening film for lamps and producing method thereof

摘要

There is disclosed a light-screening film paint for lamps containing (1) at least one compound of either manganese oxide or an iron oxide compound doped with a metallic manganese and having the formula (FexMn1-x)2O3 where 0.95<x<0.70; and (2) powder glass containing at least one of silica, zinc oxide, boron oxide and aluminum oxide. A light-screening film is produced by applying the paint to the surface of a lamp, followed by the firing at a temperature of not higher than 1,200° C.