Patent ID: 6328463
Filing Date: 2001-12-11
Classification: F21S,H01K

Abstract:
An automobile headlamp comprising a light source bulb and a reflector, wherein:said light source bulb has a low beam filament disposed on an optical axis of said reflector above and near a high beam filament;said reflector has a reflecting surface formed from a complex reflecting surface so that, when said low beam filament is turned on, a predetermined low beam light distribution pattern is formed by control of all-surface reflection light distribution of said reflecting surface and, when said high beam filament is turned on, a predetermined high beam light distribution pattern is formed by the control of all-surface reflection light distribution of the reflecting surface, while said reflecting surface has a portion for forming a maximum luminous intensity zone in said predetermined low beam light distribution pattern and high beam light distribution pattern;when said low beam filament is turned on, a part of light from said low beam filament illuminates a part of said high beam filament and is reflected on the surface thereof, so that the irradiated part of said high beam filament appears as a virtual image in said low beam light distribution pattern due to the maximum luminous intensity zone forming portion of said reflecting surface;said automobile headlamp characterized in that said low beam filament and said high beam filament have such a positional relationship as the virtual image of the irradiated part of said high beam filament does not make glaring light in said low beam light distribution pattern.