Abstract: The headlight has a one-piece reflector which includes an upper reflector portion with a light source for making a low beam, a lower reflector portion with another light source for making a fog light beam and a laterally positioned reflector portion for making a high beam. The lower reflector portion has a surface area which is comparatively small relative to the upper reflector portion. The light emitted from the other light source is reflected by the lower reflector portion in rays nearly parallel in a vertical longitudinal plane or inclined gently downward in the propagation direction. In the horizontal longitudinal plane light rays reflected from positions on the peak region of the lower reflector portion converge more as the distance of the position from the optic axis increases, light rays reflected from positions on the central region converge less as the distance of the position from the optic axis increases and light rays reflected from the edge region are nearly parallel.

Abstract: A headlamp for motor vehicles has a reflector, a gas discharge lamp, a front plate covering a light exit opening of the headlamp, and a filter arranged in a beam path of light beams reflected by the reflector and light beams transmitted directly to the front plate and at least partially absorbing light in a UV wavelength region.

Abstract: A headlamp for motor vehicles has a reflector having a light output opening, a gas discharge lamp arranged in the reflector, a screen covering the light output opening and means for shielding off interference radiation emitted by the gas discharge lamp and including a transparent interference-radiation-absorbing metallic coating.