The history of automotive lighting
In 1879 Edison invented the carbon filament incandescent lamp. Around the 1890s, vinyl blocks were standard equipment for automobile headlights. In the 1850s, halogen lamps were invented and have become the most widely used and mainstream car headlights to date. In 1995, European regulations approved the use of xenon lamps, and xenon lamps were used in high-end models. Following xenon lamps, LED car lights bring a new luxurious appearance and lower energy consumption to cars.
1. Halogen lamp
Halogen headlights are currently widely used. There are two main factors: the advantage is that they have a long life, normally a halogen bulb has a life of approximately several thousand hours; the second advantage is that they have a relatively simple process and low production costs, thus Replacement costs are also relatively low.
Features: The light is warm yellow and the brightness is relatively low, which can only meet the basic use. Under normal circumstances, the irradiation distance of the low beam is about 30-40 meters, and the irradiation range is about 160°. However, in rainy or foggy days, the warm yellow Light penetration is good.
2. Hernia headlights
Xenon headlights not only have a cool white glow, but they're often accompanied by a distinctive blue hue. Because it contains a small amount of metallic xenon, it not only prevents the light from flickering, but also ensures that it provides enough light to achieve maximum brightness. At present, many mid-to-high-end models use xenon headlights, and their prices are relatively high.
Features: The brightness is very high, about several times that of halogen lamps. The efficiency of converting electricity into light energy is relatively high, which means it is bright and energy-saving. However, its structure is complex and the cost is high. It needs to be used with a lens, so it is suitable for high-end lamps. Used more often on car models.
3.LED
LED is a solid semiconductor component. When these semiconductor materials are energized, only a part of the electrical energy will flow through the semiconductor material, and the excess energy is released in the form of light, thereby directly converting electrical energy into light energy. LED has the advantages of strong reliability, long service life, and high lumens per watt. It has a solid and simple structure, is not easily affected by vibration, and can produce more light output with the same electric energy. In addition, it has a fast response speed and does not have the luminous delay of xenon lamps, so it can effectively Reduce the odds.
Features: energy saving, high brightness, fast lighting, stable performance. Now more and more cars are starting to use LED headlights, which is also the lighting trend in the future.
