Laser Headlight, well what comes into your head when you first hear that your car is equipped with laser headlight? Oh! No your car wont fire high intensity light, and you heading slicing the slow going car into two, neither you’ll be burning all the trees and irritating drivers on your way. BMW has done pioneer work in light technology starting from Halogen, Xenon and LED. Headlamp has seen evolution just like any other component of the vehicles. Trying to find new breakthrough automakers are pouring best of engineering technology they have to develop better components than their competitors.
The laser headlight innovation was announced in 2011 at Frankfort auto expo. BMW unveiled the first ever production version of laser technology embedded headlight in new i8 plug-in hybrid car.
Let us first see how exactly this laser headlight works. BMW laser headlight works in trio blue-laser diodes situated rear of the headlight assembly into a set of mirrors. Those mirrors focus the laser energy into a lens filled with yellow phosphorus. The yellow phosphorus, when excited by the blue laser, emits an intense white light. That white light shines backward, onto a reflector.
A diode is an electric device that can be used to restrict the flow of electricity in a particular direction. Headlights in i8 are not 100% laser. Instead engineers have opted a hybrid technology, where LED and laser technology are used simultaneously. At low beams LED are used while on high beams laser will kick-start. LED consumes 40% of the less energy than traditional xenon and halogen, whereas Laser lights are 1,000 times more efficient than LED. Laser lights are most conventional lighting system ever invented, they are very lightweight and as small as spectacles. BMW has maintained that there’s no way of harming eyes by looking into one of its laser headlights. Because of the way the beam energy is directed, reflected, then ultimately displayed out of the headlight housing, you can’t even accidentally injure your eyes, according to BMW.
The glare-free Beam Assistant from BMW provides even more comfort and security, where a camera sensor is used to identify vehicles driving in front and on-coming traffic, the system divides the light cone so that other drivers will not be blinded, keeping the road surface illuminated. Watch video here