Bi-Xenon Lamp

The light source consists of a discharge tube surrounded by a glass that filters out harmful UV radiation.

The discharge tube is filled with a blend of chemical compounds, including the inert gas Xenon.
An electric arch is created through an electrical discharge between two tungsten electrodes.
Because the lamp does not have a filament, it is less sensitive to bumps and vibrations.
Bulb designation: D2S (special for projector modules).
Power consumption: 35 W.

CAUTION:

The bulb contains mercury (less than 0.5 mg), thus classifying it as hazardous waste. Hazardous waste must be handled in accordance with national legislation. See also Volvo Car Corporation's "Waste Management Guidelines for Dealers."

Xenon vs. Halogen. Xenon:

higher color temperature, which produces a whiter light
better reflection of road signs and road markings
has lower power consumption (about 2/3).

Lighting Information

Daylight has a color temperature of about 5000 °K. The closer to natural light, the more restful the light is to the eyes. A standard H4 bulb has a color temperature of about 3200 °K. The Volvo gas discharge bulb has a color temperature of about 4200 °K.
With the Bi-Xenon system, high and low beam generates the same light color. The human eye thus has an easier time adjusting to switches between high and low beam.