System and method of detecting driving conditions for a...

Details System and method of detecting driving conditions for a... System and method of detecting driving conditions for a...

2008-04-01

2008-04-01

Choi, Jacob Y. (Department: 2885)

Illumination

Supported by vehicle structure

Automobile

C362S231000, C362S543000, C362S544000, C362S259000

Reexamination Certificate

active

07350945

ABSTRACT:
A system for a motor vehicle for detecting driving conditions on a road, including a nebulosity, the range of visibility in the presence of a nebulosity or the distance between an obstacle in the road and the motor vehicle. The system includes a headlight which emits a visible light beam and an infrared light beam, at least one light sensor which receives at least a portion of the infrared beam reflected back to the vehicle, a optical device for directing at least a part of the reflected infrared beam to the light sensor and a device for detecting the modulated signal of the reflected infrared beam and determining at least one driving condition based on a comparison of the reflected infrared beam modulated signal and the corresponding emitted infrared beam modulated signal.

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