Patent ID: 7686489

Claim:
A vehicle lighting device, including a light source device, comprising: a light guide member made of a material that is transparent in a visible range, the light guide member having a front surface serving as a light emitting surface and a rear surface having a luminance control element configured to control a luminance distribution on the light emitting surface, the front surface and rear surface separated by at least one end surface; at least one of a point and a linear light source facing the at least one end surface of the light guide member, wherein the luminance control element is configured to control light reaching the control element from the at least one end surface of the light guide member and to configure the light into the luminance distribution of light on the light emitting surface, the luminance distribution configured to form a light distribution pattern to be projected; and a convex projection lens configured to project light emitted from the light source device along an optical axis of the lens and toward a front illumination direction, the lens having a focus on a side of the lens adjacent the light source device and located substantially at the light emitting surface of the light guide member of the light source device.