Secure adaptive lighting system

The system (SE) has an optical imaging system (17) receiving white light (B) re-emitted by a wavelength conversion device (15), and projecting the light in front of a vehicle to form a light beam. The wavelength conversion device is located in vicinity of a focal plan of the imaging system. A scanning system (14) and the imaging system are placed on a same reflective side of a mirror of the wavelength conversion device. A reflection unit (22) is arranged on an edge of a scanning surface (19), and reflects a light radiation (L) towards a detecting unit (24) for default scanning.