Modern Automotive Headlamps with Improved Light Sources

Abstract

Automotive headlamps have been evolved with their light sources. From Tungsten-Halogen (TH) bulbs to High Intensity Discharge (HID) bulbs, and then Light Emitting Diode (LED) is now rising. The first LED headlamp was put in the market in 2007 and the second generation was released in 2009 to enhance the energy saving feature of LEDs. But LED headlamps are facing tough competition with HID when they made the evolution for removing mercury and then started to reduce their system cost and power consumption. This is a full paper that the author presented at the LS-WLED 2010.