Method for removing blackening at inner wall of bulb of halogen filament lamp by halogen cyclic process, involves activating halogen cyclic process outside hours of operation desired by user, by heating glow filament

摘要

The method involves activating the halogen cyclic process outside the hours of operation desired by a user, by heating a glow filament. The bulb is heated to 200 degrees Celsius. The halogen filament lamp is covered during the heating, so that a luminous flux of the glow filament is discontinued in sections. An independent claim is included for a halogen-vehicle-headlight lamp with a bulb inner wall.