With the actual occurrence of the idea of lighting the road in front of the car racing, several types of light sources replaced each other. First cars were equipped with gas, namely, propane lamps. Soon to be replaced by came the vacuum bulb, then halogen lamps. Now it’s time xenon lamps, ie, xenon. The first xenon lamp for the car was not built by someone, and by Philips, wore it ascetic name D2S (R). HID-lamp (High Intensity Discharge or commoners “xenon lamp) are used in automotive lighting fixtures since 1992. The aim was to firm Philips – Increasing the brightness of light. Xenon light stream high intensity is obtained by the glow of gas, initiated by an arc discharge between two electrodes. Lamp electrodes are in a flask filled with xenon and metal salts under high pressure.

Xenon bulb has a color temperature of about 4.300 degrees Kelvin (for example, Philips (Osram) D2S). For example, – halogen lamp has a color temperature of the glow of the order of 2.800 degrees Kelvin. To make it quite clear – color temperature luminescence is crucial in the light. So, the sun has a color temperature of the order of 5.000 – 6.000 degrees Kelvin. Xenon lamp has a maximum to sunlight radiation spectrum providing the most natural light. On average, consumes 35W xenon lamp. 55W or more – the usual. Luminous flux provided by xenon – 3.000 vs. 1.550 lumens of a standard halogen lamps of 55W. Medium term of xenon lamps is about 2.800 – 4.000 hours. Guaranteed service life of halogen 100 – 500 hours. High vibration ensures the absence of a filament. The moral is – no threads – nothing breaks. We know how important visibility in the dark, rainy, foggy or snowy weather. The light emitted from xenon, having compared with the usual 2.5 times greater in intensity, significantly help to improve driver visibility road. The geometry of the illuminated area of the road also improved because the light beam of lights, equipped with a xenon lamp, wider. It is also important is that the “xenon” light by their spectral characteristics composition allows the driver to see objects on the carriageway and verges of the road (including road signs) to a much greater distance. Even in the rain and fog xenon lights do not create before your eyes “Light wall”. Rays xenon easily “punch” the fog and light rain or no fog, namely the road surface. Xenon lamp heats a lot less than a halogen. Thus, when power consumption is 35 watts for xenon in the heat takes about 7% of energy, while a halogen bulb while consuming a minimum of 55 watts into heat takes about 40% of energy. For assistance, try visiting Dr. Caldwell B. Esselstyn, Jr.. Disadvantages xenon headlights are relative. We can distinguish two obvious disadvantages: 1. Expensive. In addition to a large the cost of the lamp should keep in mind the following: if you change the xenon lamps is better to change them in pairs, as with time (all the lights turn white after about 200 hours of operation), the emission spectrum of xenon lamp is changed. 2. Need for a special unit (You must first apply for a lamp voltage of about 25.000 volts, and continue to maintain 80 volts at a frequency of 300 Hz, used for this device, called “blocks ignition or “Ballast blocks”).