Patent ID: 7350945
Filing Date: 2008-04-01
Classification: B60Q,G01S

Abstract:
1. A system for detecting driving conditions on a road, the system being mounted on a motor vehicle and comprising: (a) a headlight comprising: (b) at least one light sensor which receives at least a part of the infrared light beam emitted from the headlight and reflected back to the motor vehicle, the part of the infrared light beam reflected back to the motor vehicle and received by the light sensor having a second high frequency modulated signal; (c) an optical device which directs at least part of the infrared beam emitted from the headlight and reflected back to the to the motor vehicle towards the light sensor; and (d) a device which detects the second high frequency modulated signal of the part of the infrared light beam reflected back to the motor vehicle and received by the light sensor, and determines at least one driving condition based on a comparison of the second high frequency modulated signal of the part of the infrared light beam reflected back to the motor vehicle and received by the light sensor with the corresponding first high frequency modulated signal of the infrared light beam emitted from the headlight.