LIGHTING AND/OR SIGNALLING SYSTEM COMPRISING TELEMETRY MEANS

摘要

Lighting system comprising: a primary light source (101) producing a primary light beam (L1) in the direction of a conversion device (200) returning a secondary light radiation (B) to an optical imaging system (30) forming a projected light beam (FL), - a light sensor (501) generating a signal corresponding to the light received by this sensor, which light comprises a non-converted light part (L11) of the first primary light beam (L1) which is returned by the conversion device in the projected light beam (FL) and which is reflected by an obstacle (R) situated in the zone lit by said projected light beam (FL), - a control unit (400) comprising modulation means (421) generating a modulation signal for the primary light (L1), and demodulation means (411) for processing the signal formed by said sensor (501), and determining a distance between said obstacle and the lighting system.