Patent ID: 8070337

Claim:
A vehicle lamp comprising: a light source unit including, a light source including at least one of a point light source and a line light source, a light guide plate transparent to visible light and including, a light emission surface, a first end face facing the light source, a second end face opposite to the first end face, a rear surface, and a prism array adjacent the rear surface, extending with a serrated cross section from the first end face of the light guide plate to the second end face, and extending in a direction parallel with the first end face and including a plurality of prism surfaces, with each of the prism surfaces obliquely formed such that when light enters the light guide plate from the first end face and impinges on the prism surfaces, the light is reflected into small angles of incidence to the light emission surface; and a projection lens configured to focus light emitted from the light source unit and to project the same forward in a direction of light illumination, the projection lens including a focus located substantially on the light emission surface, wherein the projection lens is configured as a cylindrical lens having a longitudinal axis extending in a lateral direction, and the projection lens further includes a pair of convex lenses and the cylindrical lens extends therebetween.