Patent ID: 7165872

Claim:
A projector-type headlamp comprising: a light source that outputs light; a main reflection surface in a form of an ellipsoid of revolution, wherein the main reflection surface reflects a part of the light output by the light source, the main reflection surface having a first focal point and a second focal point; the light source arranged near the first focal point; a shading unit that is located near the second focal point, wherein the shading unit is movable between a first posture and a second posture, wherein a low-beam light distribution pattern is formed when the shading unit is in the first posture and a high-beam light distribution pattern with the remaining reflected light is formed when the shading unit is in the second posture; a projection lens that projects forward the low-beam light distribution pattern and the high-beam light distribution pattern; a sub-reflector that is arranged between the main reflector and the projection lens and has a sub-reflection surface in a form of a paraboloid of revolution with a point near the first focal point as a focal point, wherein the sub-reflector reflects a part of light, which does not enter into the main reflection surface and normally becomes useless, from the light source, and the sub-reflector is movable between a third posture and a fourth posture, wherein a diffused light distribution pattern is formed and superposed on the low-beam light distribution pattern projected forward from the projection lens when the sub-reflector is in the third posture and a condensed light distribution pattern is formed and superposed on the high-beam light distribution pattern projected forward from the projection lens when the sub-reflector is in the fourth posture; and a switching unit that performs switching of the shading unit between the first posture and the second posture and switching of the sub-reflector between the third posture and the fourth posture, wherein the shading unit and the sub-reflector are formed integrally, and the switching unit commonly and simultaneously performs switching of the shading unit and the sub-reflector.