Patent ID: 7736036

Claim:
A lamp unit of a vehicle headlamp comprising: a projector lens arranged on an optical axis extended in a front and rear direction of a vehicle; a light source arranged on a rear side of a rear side focal point of the projector lens; a reflector that reflects light from the light source in a front direction to be proximate to the optical axis; and a shade that shields a portion of light reflected from the reflector, wherein at least a portion of a surface of the projector lens is constituted as an up and down direction diverging portion including a plurality of lens elements extended substantially in a horizontal direction by a vertical sectional shape formed in a recessed and projected shape relative to a reference face of the surface, wherein an upper end edge of the shade is provided at a position of the rear side focal point of the projector lens, and the lamp unit forms a light distribution pattern having a cutoff line as an inverted projected image of the upper end edge of the shade, wherein the lens elements are structured to form a plurality of dim light portions on an upper vicinity of the cutoff line, wherein the dim light portions are reduced in luminescence relative to the rest of the light distribution pattern.