In spite of various problems, such like expensive costs, heat dissipation problems, technical difficulties, automotive manufacturers still strived to introduce LED car lighting applications. The main reason is this new lighting source can unprecedentedly make vehicle lighting design more flexible. It is even possible for consumers to customize their automotive style. In addition, the light efficiency of LED lights has already been able to match with HID lamps. Therefore, it is highly hopeful that LED can surpass other existing lighting technology and dominate car lighting market.
According to the product manager of Cadillac Escalade Platinum, the light distribution spectrum of LED is closed to natural light, making the reflecting efficiency from objects (such as road traffic instruction signage / line) be much higher than other lighting sources. Thus drivers can observe from a far distance and we take an early respond.
The temperature color of LED car lighting applications is around 5500K-6000K, whiter than other car lamps (HIP lamps that send out light blue rays have temperature colors around 4000K and halogen lamps send out yellow rays have temperature colors around 3000K). Therefore, in the optical design of HID lamps, scientists usually shifted the blue rays in the spectrum to the edge of emission spot, which places drivers rarely took notice of, in order to reduce the uncomfortable interference caused by colored rays.
But for oncoming drivers, still will be interfered by Blue-rays in the marginal area, causing dazzling and consequently increasing the risk of accidents. In the anti-glare aspect, high-power LED lamps (large LED lamps) have big advantages: not only provide sufficient comfort for the owner, but also keep nearby drivers from visual interference. Since Toyota Lexus applied different lighting sources on dipped headlights (LED lighting technology) and high beam lights (halogen lighting technology), owners of LS600h may interfered by color difference during the switching.
In a word, according to Mr. Asif Anwar from the marketing research and consulting department of Strategy Analytics: although LED car lighting applications are in the very early stage of development, the market has huge potentials. It is expected that, by 2012, the market of LED car lamps will reach up to 80 million dollars. LED will become the new darling of the automotive lighting industry due to its advancing in security, reliability, energy efficiency and ease of aesthetic design.