Koninklijke Philips Corporation N.V.

Ingolf Sischka

Josef Andreas Schug

Helmut Tiesler-Wittig

The invention relates to a headlight for a motor vehicle, to a lamp for the headlight, and to a headlight unit. The lamp has two coils and is capable of fulfilling widely differing functions. Means for screening off the light emitted by the coils in certain angular regions are arranged such that the regions illuminated by the coils overlap only slightly, preferably not at all. At least two reflector regions of the lamp are each illuminated by an associated coil, and are shaped such that one headlight emits two headlight beams, both having a substantially horizontal bright/dark cutoff.

Multiple-filament motor vehicle headlight lamp

The invention relates to an incandescent lamp with at least one incandescent coil which can be used for generating a high beam in a motor vehicle headlight, which lamp is additionally capable of performing the function of a daytime running light. The use of a dimmed high beam as an energy-saving daytime running light (DRL) has the disadvantage of a light distribution belonging to the high beam which is unsuitable for the function of a daytime running light. Furthermore, the high beam, if it is to fulfill the requirements as regards the maximum luminous intensity of the daytime running light, would have to be so strongly dimmed that the halogen cycle in the bulb of the incandescent lamp can no longer be maintained. This will lead to blackening at the bulb inside and a shorter lamp life. To create an incandescent lamp which renders possible an improved realization of a daytime running light function in a motor vehicle headlight, an incandescent lamp is presented with at least a first incandescent coil for generating a high beam in a motor vehicle headlight and at least a second incandescent coil for generating a daytime running beam in a motor vehicle headlight.

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Plauen, Germany

Ingolf Sischka