Stanley believes that LED car headlights superior

An evaluation report Stanley electric company before the results show that the use of white light emitting diode (LED) in headlamps, color recognition than the use of halogen lamp at high. Used for road signs of red, green, yellow 3 colors, to evaluate color recognition. The luminescence spectrum of halogen lamp and white LED lamp is different. White LED lamp with red, bright color, clear distinction. The company developed the LED lamp, the amount of light reached 800~2500lm, brightness at 10 million ~2000 cd/m2. Halogen lamps were 1000~1500lm and 20 million cd/m2, the same brightness. According to the simulation results, show the Stanley Inc that another feature of LED is light irradiation region width. With a plurality of light sources, it is possible to irradiate in different directions. Halogen lamps and other old lights only one light source, it is difficult to expand the lighting area. Stanley Inc said that the use of white LED as there are several subject of automobile headlight. The biggest issue is the popularity of the cost of the problem, not only to have different parts of the old car product performance, but also lower than the price of old products. Efficiency is also a subject, for example, although the lens can be improved by improving the efficiency of optical components, but there are limits on the size of the shape, it is difficult to achieve this method. Compared with the HID xenon lamp, white LED is another subject of brightness is only about 1/5. However, for brightness, if taking into account the safety of the vehicle, the light is not a very important point is that the other run too dazzling, so the brightness is not much of a problem.