An automotive headlamp apparatus 10 includes a light source 14, in which a plurality of LED chips 12 are arranged at intervals from each other, and a projection lens 16 for projecting the light, emitted from the light source 14, toward a front area of a vehicle as a light source image. The semiconductor light-emitting elements may be located within than a focal point of the projection lens. The LED chip 12 is arranged such that the light emitting surface of the LED chip 12 faces the front area of the vehicle. The light emitting surface of the LED chip 12 may be of a rectangular shape and the LED chip 12 may be arranged such that a side of the light emitting surface is at a slant with respect to the vehicle width direction.