Patent ID: 6637914
Filing Date: 2003-10-28
Classification: B60Q,F21S

Abstract:
A vehicle headlamp configured to effect a low-beam irradiation in a light distribution pattern in which a horizontal cut-off line is disposed on the oncoming lane side in the front direction of a lighting device, said headlamp comprising:a light source bulb including a light source disposed coaxially with an optical axis extending substantially in the back/forth direction, and a shade member which covers said light source over a predetermined angular range; a reflector for reflecting the light from said light source to the front; a translucent cover provided in front of said reflector; and a bulb driving mechanism is provided, and when said headlamp tilts in the horizontal direction, said bulb driving mechanism rotates said light source bulb about said optical axis in an opposite direction to said tilting direction of said headlamp, wherein a horizontal cut-off line forming area for controlling a light distribution for forming said horizontal cut-off line is provided on said reflector or said translucent cover, at least a part of said horizontal cut-off line forming area is formed with a plurality of reflection elements or lens elements, and said reflection elements or said lens elements slant toward said optical axis by an angle of 3Â° to 10Â° from the upper end to the lower end with respect to the vertical direction.