LIGHTING SYSTEM AND VEHICLE HEADLIGHT SYSTEM USING THE SAME

A vehicle headlight system using a lighting system can include a controller and a lighting unit, which can emit various color lights mixing a wavelength-converted light by a wavelength converting material using a part of a laser beam emitted from a laser light-emitting device as an exciting light with another part of the direct laser beam. The controller can examine a connecting state between the wavelength converting material and a mounting board mounting the wavelength converting material thereon, and also can control to turn off the laser light-emitting device of a laser light source when a threshold, which may be varied in accordance with the connecting state, is less than a value of an acceleration signal, which is caused by shocks. Thus, the presently invention can provide vehicle headlight systems including an eye-safe, which can turn off the laser light-emitting device by anticipating a degradation of the laser light source.