ELECTRIC INCANDESCENT LAMP AND METHOD OF MANUFACTURE THEREFOR

摘要

LD-09813 ELECTRIC INCANDESCENT LAMP AND METHOD OF MANUFACTURE THEREFOR An electric incandescent lamp having an improved coiled refractory metal filament construction is disclosed which enables the lamp to provide a more precise light source. Various lamp and coiled filament configurations are disclosed to include employment of a reflective film for improved efficiency of lamp operation while a halogen substance can also be included in the inert gas filling for this purpose. A method to manufacture the disclosed lamp improvement is also provided.