REFLECTOR TYPE INCANDESCENT LAMPS

摘要

In a reflector type incandescent lamp having a concave reflector and a front glass, an electroconductive coating of transparent metal oxides is applied on the inner surface of the front glass and the thickness of the coating is set to manifest a percentage of interception of infrared rays of 20 to 80 percent of that of glass for input powers of less than 0.55 W per cubic centimeter of the volume of the lamp.