Patent ID: 7942548

Claim:
A light-source lamp that gathers light from a light source at a lens for emission, comprising: a plurality of light-emitting diodes that forms the light source; and a control unit that drives the light source by controlling the plurality of light-emitting diodes with pulse-width modulation control, wherein the light-source lamp includes a main light source, a sub-light source, and a light guiding unit, the sub-light source is disposed in tandem with and to rearward of the main light source in a direction of emitting light of the main light source, and the light guiding unit is for guiding light from the sub-light source toward front of the main light source, and the light guiding unit includes a first light guiding unit serving as an incident plane of the light from the sub-light source, and a second light guiding unit having an approximately annular structure surrounding an outer perimeter of the main light source for guiding light guided by the first light guiding unit toward the front of the main light source.