![]() The headlight is capable of shutting select areas of the light depending on the position of oncoming traffic. Using this system, you can drive with your headlights turned up high. The lights are either the main units or are separate lamps that light up as needed. The lights also switch off automatically when the car completes the turn. So, they provide illumination way before the car does the turn, lighting up the area the driver intends to go. These lights turn on as soon as the steering wheel is turned. For now, the technology is quite new and is used only in a few luxury cars worldwide. The advantage of laser lights is that they are far smaller and can illuminate the road much further ahead. These lights stimulate a gas with a laser beam, which then glows extremely bright, emitting a powerful light. They do not cost much and many manufacturers are offering them as a standard feature on their cars. In LED form, they consume negligible energy and while most people like them for their designs and style, they are meant to increase your car’s daytime visibility. These are mostly LED lights that always stay lit when a car is on. Of course, some manufacturers use LEDs for just low beams, while some have full (low and high beam) LED lights. The additional benefit here is that LEDs can emit light that's far closer in colour to daylight. However, with technology advancing, the problem of lower light intensity is being overcome to the point where LEDs are finding application in headlights. Thus, they are frequently used in tail-lights and daytime running lights. The advantage of LED lights is that they light up instantly, are extremely efficient and last far longer than other light sources. In general, an LED or light emitting diode discharges light from the movement of electrons and as such, is a simple and highly efficient system. Thus, a bi-xenon lamp is sometimes cheaper and also takes up less space in the lamp unit. But a bi-xenon uses just one xenon lamp for the high beam, which is then either moved or shaded each time a low beam is to be provided. The term bi-xenon headlight is a bit confusing, as ‘bi’ suggest two. Thus, a car will have two bulbs in each lamp unit making it a total of four. As seen with tube lights, these lamps too have a small delay before lighting up and take some time to come to full brightness, which is why the high and passing beams generally get an additional halogen bulb. Xenon lamps are more expensive than halogen but they generally last longer and are more efficient. This produces a bluish-white light that is close in colour to natural light. There is no filament that gets heated up, instead, xenon gas is electrically charged. In terms of brightness, halogen lamps have a throw of about 100 metres.Īlso referred to as HID (high-intensity discharge), xenon lamps are similar to the ubiquitous tube light. Halogen bulbs used in automobiles typically emit a yellowish light and despite the technology being over 50 years old, it is widely used. These bulbs aren’t very efficient, as most of the energy is wasted in heat instead of light. But while your regular bulb has a filament (small wire) that heats up and emits light, the halogen lamp uses halogen gas to increase brightness. So, what do they mean?Ī halogen bulb is similar to an electric bulb found in any household. And, it's getting more and more difficult to cut through the jargon LEDs, halogens, projectors, xenons. No, this isn’t some party planner's material list, but the headlight technology that has been advancing at a rapid rate and is finding place on our cars.
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